• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The printer records images in the form of dots on electrical discharge-sensitive paper. Three groups of five styli are mounted on a rotor. The paper is in strip form and is fed continuously through a curved guide in a direction perpendicular to the plane of rotation of the rotor, so that the paper is wrapped part-way around the rotor as it moves past. Characters are formed from a 5 dot by 7 dot matrix.
    公开号:SU1277911A3
    申请号:SU762395305
    申请日:1976-09-08
    公开日:1986-12-15
    发明作者:Б.Кинг Олин；Е.Филлипс Дроуин
    申请人:Эс Си Ай Системз,Инк (Фирма)；
    IPC主号:
    专利说明:

    to
    eleven
    The invention relates to the recording of images and printing, in particular to rotary printing and can be used in a rotary printing device of the type in which the image is formed using electrical discharges, passing in the corresponding places of the paper that is sensitive to the discharge.
    The aim of the invention is to increase the printing speed and simplify the design.
    FIG. 1 shows a printing device, front view, axonometric; in fig. 2 - the same, rear view, in FIG. 3 — a portion of the recording paper tape used in the printing apparatus with a printing sample; in fig. 4 - printer, side view, axonometric; in fig. 5 is a section A-A in FIG. FIG. 6B-B in FIG. five; in fig. 7 is a diagram of a sync disc in FIG. 8 shows waveform diagrams illustrating the operation of the synchronization disk and the associated electronic circuit; in fig. 9 and 10 are diagrams of an electrical control system of the printing apparatus; in fig. 11 and 12 are diagrams of separate parts of the printing device in two working positions, side view; in fig. 13 g is an exemplary embodiment of the proposed device, the glider view in FIG. 14 the same, side view; in fig. 15 — section BB in FIG. 14; in fig. 16 shows the rotor shown in FIG. 14 and 15, side view in FIG. 17 is one of the print heads shown in FIG. 14, 15 and 16, side view of FIG. 18 is a printhead shown in FIG. 17 side view; in fig. 19 is a cross-section of the FIG. 14.
    An electric discharge rotary printing device includes a rotor 1, a rotation mechanism, a plurality of fortified around the periphery of the rotor heads 2, 3, and 4 with needles, each of which is perpendicular to the axis of the rotor, the feed mechanism of the sensitive material of the ribbon material through the rotor in the direction parallel to the axis of the rotor, the electrical control means for. selective actuation of needle heads11. All the needles of each head are located along a line parallel to the axis of the rotor.
    791Г2
    The number of needles in the head is equal to the number of points in the longitudinal or transverse part of the letter.
    In addition, the rotary printing device contains an electrical control means for forming words along the tape material, a device for storing data in the form of a full page of text and a device for reading printed text, and also a means for selectively storing data.
    The rotor 1 is mounted on the base 5 on the shaft 6 and rotates in the sleeve 7. The rotation mechanism of the rotor includes an electric motor 8. The synchronizing disk 9 (FIG. 2) is also mounted on the shaft 6 for print synchronization.
    Paper 10 is placed in the dispenser 10, sensitive to electrical discharges. The paper travels from roll 11 upward along the straight guide 12 to curved guide plate 13, the latter being attached to the outer surface of body 14 on the hinges
    15 and can be easily lifted. Constipation
    16 holds the guide plate 13 in a lower position when the printing device is operating.
    The light roller 17 (Fig. 2) does not have paper from the roll 11, pulls it through the curved guide plate 13 so that it forms an arc and then feeds the paper through the sleeve 7. on its inner top surface. After the seal is formed on the inner surface of the paper, the latter comes out from the left end of the sleeve 7 (Fig. 1). At the left end of the sleeve 7 there is provided a ring 18 for tearing the paper, having a notched upper end 19, which makes it easy to tear off a piece of paper tape. I
    Lower surface (t. e.  the concave surface of the paper tape is first coated with a dark material and then with a light colored material such as aluminum or zinc oxide.  The material of this coating may be destroyed or evaporated by a spark of electrical discharge.  The rotor 1 has three heads 2, 3 and 4 with needles, each of which contains five parallel evenly spaced needles (FIG.  5 and 6).  The needles are selectively excited in order to form images on the lower surface of the paper by forming points in the form of five or seven-point matrices.  Each needle head has five wires that are sufficient to reproduce all the dots for the horizontal portions of the printed characters.  Thus, each paradise when one of the needle heads passes through the reproduction paper, it reproduces at least one printed character.  Words should be printed on the tape as shown in FIG.  3, t. e.  along the ribbon in the direction indicated by the arrow a.  In addition, if it is necessary to print several lines of text, the data is accumulated in the device memory and read in such a way that each head with needles prints a completely vertical column of characters — one character from each line.  For example, the first column of symbols A in FIG.  3 was printed in one stroke with one head with needles; column B - for one code by the second head, and column C - for one move by the third head with needles.  Since there are three needle heads, it means that the three columns of symbols were printed per revolution of the rotor.  Thus, the number of characters that will be printed at one turn by the device is three times the number of lines that should be printed.  It is also possible to form words in the vertical direction instead of the horizontal one shown in FIG.  3  The speed capabilities of the printing device when working on this method will be comparable to the speed of another method.  The motor 8 is mounted on the end of the board 20 on the housing 14 with screws 21 (FIG.  five).  A drive gear 23 is attached to the output shaft 22 of the engine 8, which drives the synchronized gear disk 24 (FIG.  2 and 4), which transmits motion to a large gear wheel 25 connected to the shaft 6.  The dimensions of wheels 23 and 25 are chosen to provide a reduction in speed in the ratio of 4: 1.  The synchronizing disk 9 attached to the wheel 25 is attached to the shaft 6.  11 The shaft 6 is mounted on a ball bearing 26 of the support 27 in the end plate 20, on the right end of the shaft is fixed the stopper 28.  The end plate 29 is installed on the opposite end of the housing 14.  The shaft rotates in a ball bearing 30 on the end plate 29 and is locked by means of a stopper 31 fixed to the shaft.  The rotor 1 is mounted on the gasket 32 (FIG.  4 and 5) with screws 33.  The gasket is in the same way attached on the other side to a disk with sliding ring contacts 34, which abuts against the stopper 31.  The gasket, the disk and the rotor 1 are held by the stopper 31 by means of a 35 sec coupling which is screwed into the thread 36 (Fig.  4) on the left side of the shaft 6.  Thus, the rotor 1, the gasket 32, the disk with the sliding ring contacts 34, the gear wheel 25 and the synchronizing disk 9 rotate together with the same speed.  The rubber paper feed roller 17 is driven by a gear from the shaft 6.  The roller rotates on the shaft 38, which is mounted on the upper protrusion 39 (Fig. 4) on the end plate 29.  The upper portion 40 of the surface of the roller 17 passes through the groove 41.  The lower protrusion 42 of the end plate 29 forms a support stand 43 for the shaft, on which a worm gear 44 is fixed, hooking with a screw 45 on the shaft 6.  This combination drives the bevel gear 46, coupled with another bevel gear 47 on the shaft 38, which drives the roller 17, feeding the paper 37 at a speed significantly lower than that of the rotor 1.  The feed roller 17 is pressed against the free roller 48, which is mounted on the shaft 49 on a curved guide plate 13, and the housing 50 is mounted on the shaft 49 to protect it.  As can be seen from FIG.  5, reproducing paper is tightly sandwiched between two rubber rollers 17 and 48 and, therefore, rotation of roller 17 causes paper to pass through the printing device without significant slippage.  FIG.  10 is a circuit diagram of an electrical circuit formed when a spark arises between needle 51 and bu-.  magician 52.  The conductive underlying surface 53 of the reproducing paper must be connected to the reverse pole of the voltage source 54, which is connected to the needles 51, which is necessary for the formation of electrical discharges.  Since this is the reverse ground pole, the underlying surface of the paper must also be grounded, which is done with the help of a grounding device.  Grounding device (FIG.  2, 4, and 5) consists of a spiral conductive 55, which is wound on a curved metal rod 56 attached to an end plate 20 (FIG.  4) and which is connected to earth.  The ends of the spring 55 are held. on the spot with the help of h; clamp rings 57.  The rod 56 (FIG.  5) is curved in an arc in such a way that it goes down and fits under the right end of the plate 13.  The upper part of the spring coils resiliently presses the lower side of the paper 52 and presses it up against the guide plate 13.  The large number of coils of the spring ensures the presence of numerous closely spaced contacts, which leads to a good grounding contact of the bottom surface of the paper.  A roll 11 of paper (figs, 1, 2, 4, 5) is mounted on an axis 58, the ends of which enter holes 59 in the two end plates 60 and 61 of the distributor 10. Boards 60 and 61 are fixed on the plate. The base 5 of the printing device, Friction, which takes place in different parts of the distributor, prevents paper from running from the roll when the paper feed is stopped.  Clip 62 (FIG.  5) slzgzhit yes.  the paper gate coming from the roll 11 is at a considerable angle before entering the printing device and provides the paper feed to the printing device at approximately the same height, which would not have been the case if the paper were fed directly from the roll 11.  Contact points (FIG.  6) needles 51 with a circle 63 representing the inner surface of the roller — bushings 7, are indicated by the numerals 64, 65 and 66.  The needles 51 are mounted on a solid base of epoxy resin, which is fixed on the bracket 67 mounted on the rotor 1.  The bracket 67 has a curved groove 68 with a screw 69, which allows the head with eyes to be moved outwards or inwards to increase or decrease the pressure of the needles on the roller or on the paper on the roller.  the goal between the needles and the radial lines r w passing through points 64, 65 and 66, composition. pet approximately 70.  The angle between the needles 51 and the tangent line 70 at point 64 is therefore equal to 20 °.  Thus, the needles move along the head and the paper at an angle significantly smaller than the straight line, which ensures a smoother operation of the mechanism and a decrease in the likelihood of paper breaking through when the needles pass from the platen to the edge of the paper.  Roller - sleeve 7 (FIG.  5) has a diameter substantially larger than that of the body 14. , so that the paper enters the inner surface of the roller sleeve.  The lower 2/3 of the rear end of the sleeve 7 has a smaller diameter, so it fits to the flange 71 of the end plate 29, on which it is fastened with screws (not shown).  The paper tear-off ring is fixed in slot 72 on the inner surface at the front end of the sleeve 7.  Each of heads 2, 3 and 4 with needles (FIG.  5) connected to the terminals on the reverse side of the board with sliding rings 73 using wires 74 (FIG.  9).  The clamps are connected through a ring 73 with sliding rings on the other side of the ring 73.  Heads with needles 2 and 3 are shown in FIG. 5, in a rotated position from their operating positions.  WITH. The synchronization of forg-points with needles is important for accurate printing of characters and other images.  The timing function (FIG.  2, 4, 5, and 7) is provided with a transparent disc 9 on which a series of thin dark lines 75 are applied (Fig.  7) and one is wide black line 76.  In the ideal case, the three sensing elements — sensors A, B, and C — should be spaced relative to each other at an angle of 120 °, as are three heads 2, 3, and 4 with needles.  However, the design of the housing 14 and the guide plate 13 does not allow this, therefore, sensors A and C are separated by an angle of 180, and sensors A and B by an angle of 60.  Sensor B is fixed in one position, sensors A and C can move around the circumference relative to disk 9, thereby ensuring the timing adjustment of the beginning and end of the operation of the heads with needles relative to each other. This makes it relatively easy to make initial adjustment of the heads, and also makes it possible to easily adjust when uneven wear of the needles or misaligned B printing for other reasons without moving the heads with the needles, which prevents unbalance of the rotor and simplifies the setup process.  The fixed sensor B (FIG.  4, 11, 12 and 7) contains a device for detecting lines - detector 77, mounted on a circuit board 78. Detector 77 contains a U-shaped case on one arm of which a small LED 79 is mounted (LED, FIG.  11) the light of which is directed to the other arm, where a small photo transistor 80 is installed, which serves to exclude light.  The phototransistor is coated with a mask, which is a small piece of an opaque film in which a small thin slit is made.  which ensures that the light reaches the phototransistor only through this thin slit.  Sensor 77 detector 77 is inserted through hole 81 into housing 14 and fixed in place after disk 9 is installed in the housing.  The two arms of the detector 77 are located on different sides of the end of the disk.  Light from the LED passes through the disc in the part where dark lines 75 and 76 are worn, after which phototransistor is detected.  Each of sensors A and C also contains an identical detector 77 mounted on an L-shaped bracket 82, which is hinged by means of element 83 and connected to a mounting bracket 84.  The bracket 82 has a long shoulder with a longitudinal groove 85.  A rotary printing device is provided (FIG.  4, 11, and 12) two trimming eccentrics 86 and 87, each of which has a rod that is inserted into the hole at the end of the board 20 on the housing 14, and a slotted head, which allows it to be turned with a screwdriver.  The eccentrics 86 and 87 also contain eccentrically located pins 88 and 89, which are inserted into the groove 85.  When the eccentric head 86 or 87 is turned, the arm of the arm 82 is raised or lowered, turning around the point of the hinge element 83 in such a way that the place where the detector senses lines 75 and 76 is changed.  Each of the thin closely spaced lines 75 synchronizes the point (or one row to five points), and the wide pulse mark serves to determine the origin. The very precise setting of the imprint location can be done using eccentric devices 86 and 87 by slightly moving the position of each of the two sensors A and-C relative to the sensor B in order to change the relative time of starting and stopping the printing of the heads with needles.  FIG.  9 is a diagram of the electrical control of the printing apparatus.  The motor 8 is shown in the lower left corner of FIG.  9, and the needle on the top right corner.  A disk with sliding rings 73, brushes 90, making contact with sliding rings, and a drive 91, joints. These needle rings are also shown in the upper right corner.  From FIG.  9, it follows that each of the sliding rings and the brushes 90 make continuous contact with three needles, one of each of the three heads with needles.  The location of each such needle is the same in each head.  The brush most distant from the center is connected to the first needle in each head, the next brush to the second needle, and so on. d.  This means that the needles in all three heads (the groups indicated in FIG.  9 A, B and C) are energized simultaneously.  Therefore, the width of the paper tape should not exceed 1/3 of the circumference of the sleeve 7.  Otherwise, extraneous information will be printed on the tape.  In cases where it is necessary to use a tape of greater width, it is possible to excite needles selectively with the help of segmented sliding rings.  In the central top of FIG. 9, a memory device 92 is shown comprising six shift registers of 480 bits each.  A converter 93 is connected to the output of the device 92, which converts the identification signals of the characters from the device 92 of the memory into the corresponding point matrix signals appearing on the five output lines 94.  Dot matrix signals are capable of activating those of five needles that have contact with paper so that they can be energized and form one of the points of a specific character to be printed. The code converter 93 is addressed using three input wires 94, 95 and 96 so as to reproduce sequential information on output lines 94 to form seven consecutive rows of points for a given character, ensuring that the character is printed as a 5x7 dot matrix.  This procedure will be described in more detail below.  The memory device 92 has a capacity sufficient to accumulate characters of twelve lines of text, and the length of the lines is forty characters.  By adding more shift registers, you can increase the storage capacity of the storage device.  With a paper width of four inches (1 inch - 25.4 mm), characters about 3/16 inch in height and the minimum gap between lines on paper tape, up to 24 lines can be printed.  The lines may be approximately as long as required. Information on the six input lines 97 is fed to the device 92.  . A memory control circuit is provided for writing to and reading from the memory device 92.  A high-frequency time signal (e.g. 1 MHz) is applied to the input of gate 98 at input line 98.  Strobe pulses of a slightly lower frequency are fed to another input line 100 and are fed to one input of the gate circuit 101.  The tilting circuit 102 of type D in the information input chain (lower left corner in FIG.  9) is in the switching state, in which the signal appears at the output Q and does not appear at the output Q.  A low signal to Q switches the gating circuit 101, which leads to the supply of gating pulses through the other gating circuit 103, as well as the AND 104 circuit via the line 105 write - read to the device 11 11 memory 92 memory.  The strobe pulses provide information input through a common data input line 106 to the shift registers in the memory.  When switching over the tilting circuit 102, the Q signal from the tilting circuit 102 comes through line 107 to the gate circuit 108, which prevents data from being read through this gate circuit.  Similarly, information is read into the memory device.  The output signal of the gate circuit 104 is provided via lines 109 to the input of the time of another shift register 110.  which also has a capacity of 480 bits and is identical to the shift register of memory device 92.  Shift register 110 is used as a detecting device to determine the filling of the memory device 92 and to signal the start of the printing process.  When shift register 110 is full,. It has been produced) an output signal which is transmitted via line 111 to the input of the time signal to the tilting circuit 102. This establishes a tilting circuit and leads to the appearance of a signal on the output Q line, which via line 112 goes to the motor starting circuit 113, which is a semiconductor relay closing the power supply circuit of the electric motor 8 and setting it in motion.   The transfer of the tilting circuit 102 to the installation state excites the gating circuit 108 and enables it to read data from the memory.  At the same time, the gating circuit of the output Q output stops, which prevents further recording of information; arriving via line 97 to the memory. The operation of the tilting circuit 102 also leads to a change in the state at its outputs Q, which triggers the field reference circuit.  Counter 114 counts two speaker sync signals, which correspond to two revolutions of the synchronization disk 9 (in FIG.  9 is not shown) before the printing device is allowed to begin printing, which is necessary to obtain certain clean fields between reproducing text and a line of paper on the end of a paper tape.  At the lower right end of FIG.  9, three sensors A, B, and C shown in FIG.  4 and 7, which serve to detect the narrow synchronizing lines 75 and the wide synchronizing line 76 on the rotating disk 9 Detectors A, B and C, indicated in FIG.  9 may contain Schmitt amplifiers and trigger circuits for amplifying and pulsing the detectors.  The count of the synchronization signals of the columns shown in the waveform diagram in FIG.  8, produced by a field counter.  These signals are generated as follows.  The speaker timing counter includes two tilting circuits 115 and 116 of type I - K. The tilting circuit 116 receives a signal from sensor C at its input time, and the tilting circuits 115 and 116 receive a signal from sensor B to | Its clean inputs.  The disk 9 is rotated counterclockwise (Fig.  7).  Sensors A, B and C excite signals when the transparent portions of the disk 9 are between the LED and the phototransistor, allowing the beam of light to reach the latter.  Therefore, when the transparent areas of the disk 9 are located opposite the sensor B, the clean input circuits of the tilting circuits 116 and 115 are lowered so that the speaker timing counter switches.  When the wide 76 line passes by sensor B (this line is 2.5 times wider than each of the 75 lines), a pure signal from the tilting circuits 115 and 116 is temporarily erased and prepares them for. counting the pulses coming from sensor C, which now senses lines 75.  Although it may appear that the thin lines 75 end at the moment when the wide line 76 begins to be detected by sensors B, this is not so, because the wide line 76 is referred to 64.1 from the front end of the chain by the line 75, while
    sor B is nominally separated from sensor A by only 60 °. Therefore, sensor C is at a distance of 220 ° clockwise from sensor B, and the end of thin lines 75 is 224.1 ° and several more lines 75 remain that must pass by sensor C. Therefore, the counter counts to two before it ends Parts of FIG. 9. The gate circuit AND 122 receives the exciting input signal at its bottom input and is excited by pulses from sensor A coming through line 123. In fact, pulses from sensor A are fed through the time input of the tilting circuit 120. Thus, the first pulse from pulses wide line 76 and the spinner is erased. This produces an output pulse on the Q of the overturning circuit 115. This and flys is the speaker timing signal shown in FIG. 8 and appearing on line 117 (FIG. 9). After a wide pulse passes by sensor B, before the narrow lines reach sensor B, the counter is in the erased state and the speaker synchronization signal is not generated. After thin lines 75 reach sensor B, and when both sensors B and C sense thin lines, the speaker clock counter switches and cannot therefore read up to two, and also cannot generate a speaker clock signal. As a result, the speaker sync signal is generated only once per turn of the disk 9 while the line 76 passes by sensor B. The column sync signals are fed through line 117 to the field counter 114, which counts two such signals. Counter 117 then sends the output signal through line 118 to initiate a printing operation. In accordance with the central lower part of FIG. 9, a signal from line 118 of field counter 114 is sent to a time input (clock input) of another tilting circuit 119, which changes state and generates a signal on its output line Q. This signal is fed through line 120 to a field counter to delay it, and on line 124 as a trigger signal to the tilting circuit 120, initiating the printing process. The tilting circuit 120 is a type D circuit that is controlled in time by signals sent to its time input 121 from an AND 122 gating circuit, which is shown in the right central
    The 13 1 thin lines 75 on the code disk in sensor A, together with the Start signal on line 124, cause a change in state in the tilting circuit 120. Subsequent time pulses from sensor A also determine the time for the further operation of the tilting circuit 120. This action of the tilting circuit 120 changes The state of the output line Q 125, as well as the output line Q 126. In the same way, a high signal on line 125 is fed to one input of another NAND 127 gating circuit, the second input of which is also high because it is connected to output of another op casts D type circuit 128, which is erased at this point ,,
    The output signal of the gate circuit 127 excites a 129 row counter, the function of which is to count the number of rows of points to be printed, as well as gaps in lines and between lines of characters, addressing information of the ROM type converter 93 to address lines 94, 95 and 96, as well as ensuring the transmission of its signals through the gating circuit AND 130 and amplifiers 131 to the brushes 90 and further to the needles 51. The gateting circuit AND 130 will not generate the required output signal if both of its inputs are not the same state.
    One of the inputs of each gating circuit 130 is connected to the output of a positive .NAND 132 type gating circuit having three inputs. The output signal of the gate circuit 132 excites each gate circuit I 132 when the signal in each of the input lines of the inputs 133 and 1.34 is in the proper state. Signal in line. 133 is in good condition when the tilting circuit 120 is set to allow printing. The input line 134 is connected to the output terminal 135 of the propagation circuit 136 (in the lower right part of Fig. 9), which always receives pulses generated by the thin lines 75 in sensors A, B and C. Thus, the gate circuit 132 is re-energized by the clock pulses, generated by the thin lines 75, however, this only happens for a short duration of these pulses.
    11 14
    The clock pulses are also sent from line 135 to the counter 129 rows along line 137. The row counter counts the time pulses and, thus passing through their addressing order, counts the number of rows to be printed. Since there are seven vertical dots in each character, the row counter transmits seven pulses by successively changing the 13PUT combination in lines 94 95 and 96 to sequentially address the ROM code converter 93.
    On the eighth count, the line 138 of the row counter goes to the upper state. This gives an aapret to the gating circuit 132 and sends an enable signal on a clean line 139 to energize the tilting circuit 128. The latter does not actually change its state at this time, as it is a type D device that requires a time pulse at the time input to make a change. . The signal on line 138 is also fed to a row counter 140 to advance it by one unit.
    The output timeline 141 of the tilting circuit128 may in fact be connected to any of the lines 94 or 96 to select the spacing between the character strings. Line 94 is excited when the counter 129 counts to two, and line 96 is excited when the counter 129 counts to five.
    If the gap between the lines is chosen to be two, this is done by connecting line 141 to line 94, with the ninth counter counting 129 rows of line 94 becomes high and this leads to the installation of a tilting circuit 128. If the gap between the lines is equal to five , then so; the action takes place at the twelfth count instead of the nine.
    When the tilting circuit 128 is set, its Q output goes high and sends a signal that excites the disposable multivibrator 142 in the memory control circuit 143 shown in the upper part of FIG. 9. The one-time multivibrator generates a pulse, which is fed through the gating circuits 108, 103 and 104 to the read / write line 105 for reading from the memory device 103 the information about the 15 next symbol. Information about the first character has already appeared on the output lines of the memory device 103, since this was the first information stored in the memory. Installing the tilting circuit 128 puts the Q output of this circuit into a low state, which causes the rie to exit the gate of the gate circuit 12 to a high state and to switch all the outputs of the 129-row counter to zero. The resulting low signal in lines 138 and 139 switches overturning circuit 128 and re-translates gating circuit 132 into a state that permits printing of the next character. The 129 row counter begins again to count the clock pulses arriving along line 137, and the next character begins to be typed in the column. The next character is printed in the same way that the first character was printed, and the process continues until one character is printed in each of the twelve or twenty-four lines whose characters are to be printed. This completes the printing of one character column. The signal from the output line 138 from the counter-129 series of IDovs also goes to the 140 line counter, which counts the number of lines printed for each stroke of the print head.
    149
    150
    135 A B C O 1 O O O 1
    The data selection counter contains an I-K pair of tilting circuits 151 and 152. When the first pulse of the divider counter changes from 117-288 to the state of the tilting circuit 151, this causes the information on the output lines 135 and 148 to change in accordance with the specified table. When the next pulse arrives from the circuit 147, the state of the second overturning circuit 152 and information on it is changed148 Permitted actions B Typing column A C Typing column B
    - Speaker C printing The speaker sync signal is switched to state (1).
    The x 135 and 148 are changed again to 0 according to the table. Thus, first, signals A, then signals B, and then signals C are fed to the circuit for controlling printing.
    As can be seen from FIG. 8, the generation of 5 speaker sync signals occurs at time Td, and the sensor sync signals begin thereafter at time T ,. Analyzing the waveform of sensor B in FIG. 8, 11 production tape may be used. Two different connections were made with a counter of 140 lines, one of which provides for counting up to twelve lines by the internal circuit, and the second one provides for counting up to twenty-four lines by the user’s choice. If twelve lines are required to be printed, then after the twelfth character is printed by a specific print head, the line counter 140 sprinkles the output signal on line 144 to the AND 145 gate circuit, which also receives the input signal from the tilting circuit 102 on line 146. tilting circuit 120. This leads to the prohibition in the printing device until the start of printing of the next vertical column of characters when the next print head is in the printing start position. The point synchronization circuit contains, in addition to the gating circuit 145 and a column synchronization counter, also a data selection counter and a counter 147 operating in frequency divider mode at 117. Circuit 145 connects various input signals to output lines 135 and 148 depending on the state of the input lines 149 and 150. The table explains the work of the breeder. to conclude that sensor B starts to generate synchronization pulses at the moment. Tj. From FIG. 9 that the sensor pulses of sensor B are fed along the output line 148 of the breeder to the count; divider by 117-288; Printing by the HEAD with needles A ends at time Tj (FIG. 8), when the line counter erases the enabling print tilting circuit 120 When the counter 147 counts 117 pulses (1/3 of 351 pulses generated by thin marks on the disk), the counter 147 provides an output signal that is fed to the input of the gate circuit 1515, the other input of which is connected to the Q line of the tilting circuit 153. Thus The gated circuitry AND 152 is excited and sends a signal on line 154 to erase the 144-line counter, disabling the gating circuit 145 and switching the printing permitting tilting circuit 120, which causes the next character column to start printing with the printhead B. This happens at time T, i.e. shortly after T. From the moment T to the moment 1, the head B with needles prints characters. At the time Tg, the row counter is again activated and the printing is stopped. Synchronization pulses from sensor C were fed to counter 147 starting from the moment 1. After the counter 147 counts 117 pulses from sensor C and the output signal is received, the third head with needles will get permission and start printing at time T, which continues until the row counter does not stop at time Tg. Thereafter, a column sync pulse is generated again at time T and the printing process is repeated again during the next revolution of the rotor 1. This is repeated until all the information from memory 92 is read and printed. I, While reading information from memory device 92, shift register 110 shifts as many times as each of the shift registers in the memory device. When register 110 is filled, a circuit (not shown) is triggered, which feeds a pulse along line 111 to switch overturning circuit 102 to its initial state, turns off the motor power circuit 113 and stops the motor. The same circuit also switches each of the shift registers and tilting circuits that have not yet been switched, thus preparing the circuit for a new printing. Repetition of the same print job to get a copy of the text can be done as follows. Before the memory is loaded, the Kstroi P input of the shift register 110 and the R inputs of the shift registers in the memory device 92 are connected to each other and are connected to a low signal source. The shift registers are of the type in which this causes the data to re-circulate and re-accumulate in the shift registers of memory device 92 instead of reading with erasure. The same applies to shift register 110. Thus, this mode of operation provides automatic, reprint text. The proposed device provides an automatic contrast control circuit 155 comprising a tachometer 156 on a disposable multivibrator, the output of which is fed to an integrating chain 157 and then amplified by a linear amplifier 158. The signal from the output of amplifiers 158 is fed to the inputs of amplifiers 131 to increase or decrease of the needles supplied to the needles in accordance with the rotor speed. The pulses fed through line 135 have a frequency that is directly proportional to the speed of the rotor, since these pulses are those which are sequentially generated by lines 75 in the sensors A, B and C. The pulses at the output of the tachometer 156 have a constant width. This is due to the fact that their width is determined only by the parameters of the multivibrator. However, since the time intervals between pulses vary in direct proportion to the rotor speed, the output voltage of the integrator -157 also varies in direct proportion to the rotor speed. This results in an increase or decrease in the output of the amplifier 158 and the amplifiers 131. The voltage applied to the needles is 50 V at a printing speed of 19,500 characters per second. With a speed of 3000 characters per second and the same number of lines and the same interval between lines, the voltage is 70 V. With the automatic contrast control scheme, the contrast and clarity of printed characters are kept approximately constant despite large changes in rotor speed. As an example, the demonstration yielded a satisfactory print quality even when the rotor was rotated by hand at very low speeds and at speeds of up to 3000 characters per second. The speed of 3000 characters per second is not considered the upper limit of the speed for this device, it changes with the number of lines with characters to be printed, etc. However, it is an advantage of the invention that a speed of up to 3000 characters per second has been achieved relatively cheaply. , simple and compact device. The proposed device can be used to print alphabetic and numeric characters, to obtain a hard copy from an oscilloscope tube or a television screen, and as a load on a calculator. An information page that appears at some point on the cathode ray tube can be reprinted quite easily. The printing device is so small (4 inches by 4 inches by 8 inches or less) that it can be built into a single display screen module with many cathode ray tubes. Advantageously, the proposed device can be used when operating in a mode where printing should be carried out in one line. The logic circuit of the calculating device can be used instead of some control circuits shown in fig. 9. It is also possible to put some of the control signals of the printing device into a special program of a general purpose computing device. In the proposed device, the process of electrical discharge, the three print heads on the rotor may be different. Use in each head instead of needles of the pushed-off cores is possible. With this implementation, each of the 11 ejected rods is hit with an electromagnet on a dyeing tape to form a dotted matrix symbol on plain paper. Ink dot forming devices can likewise be used to print characters from dots on plain paper. The number of print heads on the rotor is exactly the same as the number of needles in each head can vary. However, the use of three print heads, each of which prints one column of characters in one stroke, is the preferred solution. FIG. 3 that there is a slight shift from left to right of the point of the beginning of the upper and lower rows. This is due to the fact that the rotor rotates and the reproducing paper continuously moves. This leads to a slight longitudinal shift of the last line relative to the beginning of the first line, which is irrelevant when typing data and does not require compensation. However, if this turns out to be important with frequent use of the printing device, the skew can be compensated in the manner of. as shown in FIG. 13. In the example of the printing device (Fig. 13), the paper feed direction is an angle of 0, equal to 2 ° 4 with respect to the longitudinal axis of the device, it is sufficient to compensate for the skew produced by the printing device. If the number of heads or / and the number of wires to the needles is changed, then the compensating angle must also be changed accordingly. In addition to the mechanical system for adjusting printing with three heads, in which adjustment is carried out with rotation of eccentrics 86 and 87, adjustment can be carried out with the help of electronic devices by adjusting the delay, which determines the start of printing of each head so that it is late or ahead of printing other heads by some amount. However, mechanical adjustment provides good accuracy at lower cost. The rotary printing apparatus shown in FIG. 14 is characterized by the design of the rotor on the left side of the ne 21 12 of the chat device and the device for grounding paper. In accordance with FIGS. 14 and 15, three heads with needle are mounted, along axial lines on the inner surface of the rotor. In accordance with FIG. 17 and 18, as well as FIG. 14 and 15, each head with needles 51 contains five closely spaced parallel needle wires that are welded to the holder 139. Electric energy is supplied to the needles by means of a printed circuit board 160, which is mounted on the holder 159. This assembly is fixed on the slide 161, having L- figuratively. The slide 161 slides in a groove in the mounting block 162. The trim screw 163 rests on the lower portion 164 of the slide 161 and can turn the body 162. Thus, the slide 161 moves the screw 163 and the position of the needles 51 on the body can be adjusted. Each of the three needle heads is mounted along the axial lines on the rotor 1 by means of a supporting structure (FIGS. 14 and 19) and a shoulder 165 fixed on the body 162, protruding in the direction perpendicular to the direction in which the needles 51 protrude. At the end of the arm 165, there is an expanding cavity 166, which is filled with lead or contains a heavy metal liner 167. The latter provides a relatively large mass, which is necessary for the needles to be moved apart by centrifugal force to contact reproduction paper. A spring 168 is attached to each arm 165, the other end of which is hooked onto a pin protruding parallel to the drive axis 6. A spring attachment point 168 to the arm 165 is located between the housing 162 and the end 166 of the arm 165. This design serves to automatically withdraw needles 51 from the production when the speed of rotation of the rotor 1 falls below a predetermined minimum value, for example, 500 rpm. The spring attachment rotates the printheads around their axes 169 clockwise, causing the needles to retract from the paper.
    When the rotor 1 begins to rotate, the centrifugal force acts on
    the end of the axis 173j having at the end of the thread, which enters the threaded hole 176.
     The adjustment of the head is accomplished by inserting a screwdriver into the slot on the head 172 of the adjusting screw and turning it. This leads to a change in the distance between the block 162 and the disc 1 heavy pad 167 at the ends of the shoulders 165, stretches the springs and turns the shoulders 165 counterclockwise. When the keel speed is reached, the needles 51 touch the surface of the reproducing paper. A restrictive structure is provided to prevent excessively high pressure of the needles 51 on the paper with an increase in the speed of rotation. This restrictive structure contains an eccentric 170 (Fig. 15) and a screw 171 ,. . The rear end of the housing 162 of each printhead is in contact with the eccentric. stopping the rotation of the print head counterclockwise due to the centrifugal force and stabilizes the position of the needles 51 in the desired location. This place can be changed by turning the screw 171. The length of the needles 51 in the radial direction can be adjusted by turning the screw 163, which leads to their greater extension in the radial direction outwards or to a decrease in their radial extent with a setting that compensates for their wear or displacement from reference position. The position of the needle heads can also be adjusted in the axial direction (in a direction parallel to the axis 6 of the actuator 6) using the device shown in detail in FIG. 19 and also in FIG. 14. Screw 172 is installed so that its head is on the outer surface of the rotor disk 1. The screw has a smooth axis 173, which falls into the sleeve 174 and slides inside it; this sleeve supports both the axis 173 and the inner surface of the block 162. The latter (FIG. 17) has a large hole 175, which includes the sleeve 174, as well as a small threaded hole 176 in the plate 177 (FIG. 18) attached to one side of the head with needles. From FIG. 19 that the screw is held by the spring washer 178, which enters the recess by 1, providing axial adjustment for each printhead and the confidence that each of the printed characters will have a proper clearance with respect to the characters printed by others. heads with needles. The rotor 1 is mounted on the shaft 6 using the device shown in FIG. 14, A sleeve 179 is provided. The rotor 1 is attached to this sleeve with four screws 180 (FIG. 16 On the other side of the sleeve 179, a disk with sliding rings 73 is attached which provides a connection to the electrical circuitry of the printing device. In addition, the shaft is fitted with a stopping member 31. Bushing 179 has a central neck, in which there are pins 181, to which springs 168 are attached, Bushing 179 has a neck in the back part, on which a compressive spring 182 is fitted (Fig. 14), pressing on the stopping member 31 and the sleeve 179, repulsing the rotor from the shaft 6 and thus helping to move it. The rotor 1 is fixed on the end of the shaft 6 by means of a locking mechanism (FIG. 16) containing a latch or plate 183 with two perpendicular end limbs 184, which can be pressed for In order to move the plate 183, Ppastin 183 is attached to the outer surface of the rotor 1 by means of a pair of rivets 185, which pass through a pair of elongated grooves in the plate 183 and hold it. Curved washers (not shown) are laid between the heads of the rivets and the sliding plate to ensure constant friction between the plate and the rotor surface and thus keep the plate in the position in which it has been moved. Plate 183 has an expanding groove 186, the diameter of which is slightly larger than the diameter of the end of the shaft 6. The shaft 6 has a groove around the circumference (Fig. 14), which includes the ends of the plate 183 in the groove in order to clamp the end of the shaft 6. therefore, by simply moving the plate 183 downward (Fig. 16), it frees the end of the shaft, which allows the disc to be removed. Thereafter, the spring 182 pushes the rotor outward, which helps to remove it. When the rotor 1 is installed in place, the end of the shaft 6 passes through the opening 186 and the plate 183 moves upward to connect the plate with the end of the shaft and secure the rotor in place. The described rotor installation and needle adjustment have great advantages. When a rotor is required to be removed from the printing device or a new reproducing paper tape needs to be filled, the needles 51 will not interfere with this, for they retract and do not come into contact with the reproduction paper. The device comprises a structure for axial adjustment of the needles without a rotor with a printing device. This adjustment can be made by simply turning the screws 172, which are at the open left end of the printing device. A simple mechanical device for adjusting the effective length of the needles is also provided by simply turning the screws 162. This facilitates the initial alignment of the needles to obtain a print that is properly aligned and easy to read. Two of the three photocells and the associated electronic circuit used in the implementation shown in Figures 1-13 for circular adjustment and synchronization of the needles can be eliminated due to the mechanical adjustment using screws 163. It is possible to remove the rotor very easily achieved by the introduction of a simple sliding lock, shown in FIG. 16, The ease of removal is enhanced by the use of a spring 182. The needles can be moved to paper and away from paper by another device other than a centrifugal device. For example, needles can be pulled out with the help of solenoids excited with a belt lag after the needles start. These same solenoids may be used to remove needles from being in contact with the paper after the rotor starts to slow down, or after it stops. Solenoids can be manually operated if necessary. 25 1 In FIG. 14 also shows a paper grounding device. Instead of the device with the bent spring 55 described above, the wheel feeding the paper can be made of metal (for example steel) and grounded with a brush 187 that provides contact with the end of the axis 38 on which the wheel 37 is mounted. allows the use of a ball earthing contact for earthing reproduction paper, which eliminates wear and friction caused by the sliding contact and minimizes scratching of the paper. In addition, the manufacture of the wheel 37 from metal instead of rubber prevents deformation due to the pressure of this wheel 37 on the wheel 48 under the long-acting condition. Formula inventions
    权利要求:
    Claims (4)
    [1]
    1. An electric discharge rotary printing device including a rotor, a mechanism for its rotation, a plurality of heads mounted on a perimeter (3 rotor heads, each of which contains a needle, perpendicular to the rotor axis, an electrical discharge-sensitive feed mechanism, which contains
    There is a device for accumulating data in the form of a full page of text and a device for reading printed text.
    5, The apparatus according to claim 1, and 4, which is replicated in that it comprises means for selectively accumulating data of a pue.l material through a rotor in a direction parallel to the axis of the rotor, an electrical control means for selectively actuating the heads, characterized by In order to increase printing speed and simplify the design, each of the heads contains many additional needles perpendicular to the rotor axis, all the needles of each head being located along a line parallel to the rotor axis,
    [2]
    2. The device according to claim 1, characterized in that the number of needles in the head is equal to the number of points in the longitudinal or transverse part of the letter.
    [3]
    3. The device according to paragraphs. 1 and 2, in that it comprises an electrical control means for forming words along the tape material,
    [4]
    4.Device according to claim 1
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    同族专利:
    公开号 | 公开日
    BE846000A|1977-03-09|
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    ZA765318B|1978-06-28|
    ZA782604B|1978-07-26|
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    US2910339A|1957-06-19|1959-10-27|Pan American Petroleum Corp|Electrographic recording apparatus|
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    US3178718A|1961-06-23|1965-04-13|Burroughs Corp|Electrostatic recording|
    US3427633A|1964-05-04|1969-02-11|Motorola Inc|Page printing device with marking material bearing web between scanning styli and record medium|
    US3463906A|1965-04-06|1969-08-26|Hewlett Packard Co|Optical card reader|
    US3363261A|1965-07-30|1968-01-09|Motorola Inc|Printing device|
    US3500433A|1965-11-08|1970-03-10|Litton Systems Inc|Precision depth recorder|
    FR1540967A|1967-06-29|1968-10-04|Bull General Electric|Reader-selector device for optical reading of perforations and marks on recording media|
    US3760162A|1969-11-13|1973-09-18|Smiths Industries Ltd|Photoelectric readers|
    NL7201224A|1972-01-28|1973-07-31|
    BE795651A|1972-02-25|1973-06-18|Sepotec|MATRIX FOR OPTICAL READING OF ENCODED INFORMATION AND CARD READER EQUIPPED WITH SUCH A MATRIX|
    IT973289B|1972-03-30|1974-06-10|Bosch Gmbh Robert|PROCEDURE FOR RECORDING INFORMATION AND CIRCULAR DEVICE FOR THE EXECUTION OF THE PROCE DIMENTO|
    US3769628A|1972-04-03|1973-10-30|Varian Associates|Method and apparatus for electrostatically recording with a closed loop web drive|
    US3818444A|1972-06-29|1974-06-18|Pitney Bowes Inc|Optical bar code reading method and apparatus having an x scan pattern|
    US3870865A|1973-07-05|1975-03-11|Cummins Allison Corp|Method and apparatus for optical reading of recorded data|US4230938A|1978-02-21|1980-10-28|Centurion Data Corporation|Computer input/output device|
    US4441112A|1982-03-05|1984-04-03|Keller Michael I|Non-impact dot matrix printer|
    DE19918236C2|1999-04-22|2003-01-02|Heron Sondermaschinen Und Steu|Elastic deformable impeller for workpiece carriers or the like|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/611,785|US4100551A|1975-09-09|1975-09-09|Rotary electrical printer and method|
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