• 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:
    PURPOSE: An apparatus and a method for sensing a paper feeding error in an official instrument are provided to sense the paper feeding error generated by the operation badness of a pickup roller using only a paper sensor installed in a paper feeding cassette without additionally installing a separate paper sensor. CONSTITUTION: A sensing actuator(119) is installed in a frame to be displaced when papers are loaded on a paper feeding cassette(111). A paper sensor unit(125) outputs a paper loading signal and a paper unloading signal according to the displacement of the sensing actuator(119). Sensing actuator driving units(113,132) drive the sensing actuator(119) so that the paper sensor unit(125) outputs the paper unloading signal in the pickup operation of a pickup unit(130). A control unit judges whether the paper sensor unit(125) outputs the paper unloading signal in the pickup operation of the pickup unit(130), and stops an official instrument when the paper sensor unit(125) does not output the paper unloading signal.
    公开号:KR20040050719A
    申请号:KR1020020077849
    申请日:2002-12-09
    公开日:2004-06-17
    发明作者:유세현；이진수
    申请人:삼성전자주식회사；
    IPC主号:
    专利说明:

    Apparatus and method for sensing pickup error of office machine}
    [15] The present invention relates to an office equipment such as a printer, a facsimile machine, a multifunction printer, and more particularly, to determine a paper feeding error due to a malfunction of a pick-up roller using only one paper presence sensor mounted on a paper feed tray or a cassette during paper pickup. The present invention relates to a feeding error detecting apparatus and method of an office equipment.
    [16] In general, office equipment such as printers, facsimiles, multifunction devices, etc., is used to automatically feed documents or papers into the machine. It includes).
    [17] As shown in FIG. 1, the paper automatic feed apparatus 10 includes a paper feed cassette or tray 11 for loading paper having a knock-up plate 13 supported to be elastically lifted and lowered by an elastic spring (not shown). And a paper loading presence detecting unit 17 for detecting whether paper is loaded, and a pickup unit (not shown) for picking up paper and feeding the paper into the apparatus.
    [18] The document loading presence detection unit 17 is installed on a fixing bracket 29 of a frame (not shown) and includes an optical sensor 25 having a light emitting unit and a light receiving unit, and a paper P having a knock-up plate as shown in FIG. 2. Sensing actuator 19 disposed to protrude downward through the paper sensing groove 15 of the knock-up plate 13 so as to be lifted upward by the paper P to operate the light sensor 25 when loaded on the paper 13. It is composed of
    [19] The sensing actuator 19 is an operation part 20 and an optical sensor 25 protruding downward through the paper sensing groove 15 of the knock-up plate 13 by its own weight so that the sensing actuator 19 can be lifted upward by the paper P. Sensing trigger 21 arranged to move between the light emitting part and the light receiving part of the optical sensor 25, and a frame (not shown) so as to be rotatable and to operate the operation part 20 and the sensing trigger 21 It is made of a support rod 22 formed integrally with.
    [20] The pickup section includes a cylindrical pickup roller having a shaft connected to a gear train (not shown) that transmits a driving force of a drive motor (not shown).
    [21] Referring to the operation of the conventional paper automatic transfer device 10 configured as described above, first, when the document or paper (P) is loaded on the knock-up plate 13, and then the paper cassette 11 is mounted on the office equipment, Fig. 2 As shown in the figure, the paper P lifts up the operation part 20 of the sensing actuator 19. At this time, the sensing trigger 21 is integrally connected with the operation unit 20 through the support rod 22 is spaced apart from the optical sensor 25 to rise upward.
    [22] As a result, the light receiving portion of the photosensor 25 receives the light emitted from the light emitting portion and generates a high signal to the control unit (not shown), whereby the control unit mounts the paper P on the paper feed cassette 11. Will be detected.
    [23] In this state, when a command for printing or scanning the paper P is input to the office equipment, the control unit applies power to the drive motor for driving the pickup roller to rotate the pickup roller.
    [24] Therefore, the pickup roller separates the sheet of paper P into sheets by a frictional force with a paper separating apparatus such as a friction pad (not shown) and feeds the sheet into the office equipment.
    [25] However, since the conventional paper automatic feeder 10 detects only whether the optical sensor 25 of the paper stacking detection unit 17 is loaded in the paper feed cassette 11 of the paper P, In order to detect a feeding error that may cause contamination inside the machine because printing is performed while paper is not fed due to a malfunction, a separate paper detection sensor must be installed in the paper transport path inside the machine. There was this.
    [26] In this case, when the additional paper sensor is additionally installed, the configuration of the office equipment becomes complicated, and the manufacturing cost increases.
    [27] The present invention has been made to solve the above problems, the main object of the present invention is to provide a paper feed error due to a malfunction of the pickup roller only by the paper detection sensor installed in the paper feed cassette without additionally installing a separate paper sensor. The present invention provides a feeding error detecting apparatus and method for office equipment that can simplify the configuration and reduce the manufacturing cost.
    [1] 1 is a partial perspective view of a conventional paper automatic feeder.
    [2] Fig. 2 is a partial perspective view of the paper automatic feeder shown in Fig. 1 illustrating a state where paper is loaded.
    [3] Figure 3 is a partial perspective view of the paper automatic transfer device to which the paper feeding error detection device of the office equipment in accordance with the present invention.
    [4] 4A and 4B are partial perspective and side views of the paper automatic feeder shown in FIG. 3 illustrating a state where paper is loaded.
    [5] 5A and 5B are partial perspective and side views of the automatic sheet feeder shown in FIG. 3 illustrating an operation of picking up the sheet;
    [6] FIG. 6 is a flow chart illustrating the operation of the automatic sheet feeder shown in FIG. 3. FIG.
    [7] * Description of the symbols for the main parts of the drawings *
    [8] 10, 100: Automatic Document Feeder 11, 111: Paper Feed Cassette
    [9] 13, 113: Knock-up plate 15, 115: Paper detection groove
    [10] 17: paper loading detection unit 19, 119: sensing actuator
    [11] 20, 120: operating part 21, 121: sensing trigger
    [12] 22, 122: support rod 25, 125: light sensor
    [13] 117: misfeed detection device 130: pickup unit
    [14] 131: pickup roller
    [28] According to one embodiment of the present invention for achieving the above object, the present invention provides a paper feed tray or cassette mounted to the frame to load a frame, a document or a paper, and a pickup to pick up and transport the paper loaded in the paper cassette In an office equipment including a part, a sensing actuator mounted to rotate in a frame with respect to the paper cassette so as to be displaced when paper is loaded in the paper cassette, and a paper loading signal and a paper unloading signal according to the displacement of the sensing actuator. Determining whether the paper sensing sensor unit, the sensing actuator operating unit for operating the sensing actuator to output the paper unloading signal during the pickup operation of the pickup unit, and whether the paper unloading signal output of the paper detection sensor unit during the pickup operation of the pickup unit If the paper unloading signal is not output, judge the paper feed error Provided is a paper feeding error detecting apparatus for an office equipment including a control unit underground.
    [29] In a preferred embodiment, the paper sensing sensor portion is composed of an optical sensor provided in the frame and having a light emitting portion and a light receiving portion, and the sensing actuator is operated with respect to the paper cassette so as to be lifted and lowered by the paper loaded in the paper cassette. Sensing is arranged to move between the light emitting part and the light receiving part of the optical sensor to operate between the first sensor and the second position for outputting the paper loading signal and the second position for outputting the paper loading signal in accordance with the operation of the member It consists of a trigger and a support rod pivotally supported on the frame and integrally formed with the operating member and the sensing trigger.
    [30] The sensing actuator operating portion is installed in the paper feed cassette so as to elastically support the paper for lifting up and down, and forms a paper sensing groove for accommodating the operation member so that the operating member is lifted upward by the paper when the paper is loaded into the paper feed cassette. The knock-up plate and the knock-up plate are separated from the knock-up plate and the paper so as to displace the sensing trigger to the second position by holding the knock-up plate in the ascending position before and after the pick-up operation of the pick-up unit while the paper is loaded. And a portion circumferential surface portion constituting a portion of the pickup portion formed in the pickup portion in a form of being brought into contact with the knock-up plate and the paper to move to the lowered position to displace the sensing trigger to the first position. At this time, the portion of the pickup portion is preferably a pickup roller or a shaft of the pickup roller.
    [31] Optionally, when the paper feed cassette is configured with a fixed frame without a knock-up plate which is lifted by an elastic spring, the sensing actuator operating portion may be configured to move the sensing actuator before and after the pick-up operation of the pickup portion with the paper loaded. And an actuating lever provided in the pickup section with respect to the sensing actuator to displace the sensing actuator to the first position outputting the paper unloading signal during the pick-up operation. Can be.
    [32] The controller may further include an external notification unit including one of a speaker that notifies the paper feed error to the outside, a display unit which displays the paper feed error as a text, and one of both the speaker and the display unit.
    [33] According to another embodiment of the present invention, the present invention is a step of determining whether to output the paper loading signal from the paper detection sensor unit which is operated by a sensing actuator installed on the paper tray or cassette, the pickup unit driving signal at the time of outputting the paper loading signal Determining whether or not the input of the pickup unit is driven, driving the pickup unit when the pickup unit driving signal is input, determining whether the paper unloading signal is output from the paper detection sensor unit when the pickup unit is driven, and when the paper unloading signal is not output. It provides a method of detecting a paper feeding error of the office equipment comprising the step of determining the error and stop the device.
    [34] In the preferred embodiment, the step of determining whether the paper unloading signal is output consists of determining the output of the paper unloading signal from the input of the pickup drive signal until the predetermined time elapses.
    [35] The step of stopping the machine is to sound a paper feeding error externally through a speaker, to display the paper feeding error externally through a display, or to sound externally or textually through both a speaker and a display. It includes more.
    [36] Hereinafter, a paper feeding error detecting apparatus for an office device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
    [37] Referring to FIG. 3, there is illustrated a paper automatic transfer apparatus 100 to which a paper feed error detecting apparatus of the present invention is applied.
    [38] The automatic sheet feeder 100 is a paper feed tray or cassette 111 mounted on a frame (not shown) of the machine to load paper, and a pickup unit 130 for picking up and transporting paper loaded in the paper cassette 111. And a feeding error detecting device 117 for detecting a feeding error when the pick-up unit 130 malfunctions.
    [39] The paper feed cassette 111 is provided with a knock-up plate 113 supported by an elastic spring (not shown) to elastically support the paper to move up and down.
    [40] The pickup unit 130 includes a fan-shaped pick-up roller 131 having a shaft 133 connected to the drive motor through a gear train (not shown) to transmit a driving force of the drive motor (not shown). . The knock-up plate 113 and the pick-up roller 131 constitute sensing actuators 113 and 132 which will be described later.
    [41] The paper feeding error detecting device 117 is configured to be rotated in the frame with respect to the knock-up plate 113 so as to be displaced when paper is loaded in the paper feed cassette 111, according to the displacement of the sensing actuator 119 and the sensing actuator 119. The sensing sensor unit 119 operates the paper detecting sensor unit 125 for outputting the paper loading signal and the paper unloading signal, and the paper detecting sensor unit 125 outputs the paper unloading signal during the pickup operation of the pickup roller 131. Determining whether or not the paper unloading signal output from the sensor unit 125 during the pick-up operation of the sensing actuator operating unit 113, 132, and the pickup roller 131 as a paper feeding error when the paper unloading signal is not output A control unit (not shown) for stopping the office equipment is provided.
    [42] The paper sensor 125 is composed of a light sensor which is installed on the fixing bracket 129 of the frame and has a light emitting unit for transmitting light and a light receiving unit for receiving light emitted from the light emitting unit.
    [43] The optical sensor 125 outputs a high voltage, that is, a high signal in the 'on' state where the light emitted from the light emitter is received by the light receiver, but is low in the 'off' state where the light emitted from the light emitter is blocked. It is to output the (Low) signal.
    [44] The light emitting portion and the light receiving portion are preferably composed of a light emitting diode and a photo transistor, respectively.
    [45] The sensing actuator 119 operates as described later by self weight so that the paper P is lifted upward by the paper P when the paper P is loaded on the knock-up plate 113 as shown in FIGS. 4A and 4B. According to the operation of the operating member 120 and the operating member 120 installed to protrude downward through the paper sensing groove 115 of the knock-up plate 113 constituting the unit, the light sensor 125 is a low signal, that is, the paper unloading 3, 5a, and 5b to output a signal and a high signal, that is, a second position (Fig. 4a and 4b) to output a paper loading signal to be displaced to operate the optical sensor 125 A sensing trigger 121 disposed to move between the light emitting part and the light receiving part of the optical sensor 125, and a supporting rod 122 that is rotatably supported on the frame and integrally formed with the operating member 120 and the sensing trigger 121. )
    [46] The sensing actuator operating portions 113 and 132 have a paper sensing groove 115 which accommodates the operating member 120 so that the operating member 120 is lifted upward by the paper when the paper is loaded in the paper cassette 111. Partial circumferential surface portion 132 constituting the circumferential surface of the formed knock-up plate 113 and the fan-shaped pickup roller 131 so as to contact the knock-up plate 113 and the paper P during the pick-up operation of the pickup roller 131 It is composed of
    [47] In the present embodiment, the partial circumferential surface portion 132 is illustrated as constituting the circumferential surface of the pick-up roller 131 of the fan shape, but when the pickup roller is configured in a cylindrical shape, the knock-up during the pickup operation of the pickup roller separately from the pickup roller It may be composed of a lever or fan-shaped portion having a knock-up plate contact surface formed on the shaft 133 of the pickup roller to move up and down the plate 113, or a paper contact surface protruding upward from the circumferential surface of the pickup roller from the shaft 133. will be.
    [48] The partial circumferential surface portion 132 of the pick-up roller 131 holds the knock-up plate 113 in a raised position before and after the pick-up operation of the pick-up roller 131 in the state where the paper P is loaded. Pick-up operation while the sensing trigger 121 is spaced apart from the knock-up plate 113 and the paper P so as to displace the sensing trigger 121 to the second position (Figs. 4A and 4B) where the optical sensor 125 outputs the paper loading signal. When the knock-up plate 113 is moved to the lowered position, the sensing trigger 121 of the sensing actuator 119 is displaced to the first position (Figs. 5A and 5B) where the optical sensor 125 outputs the paper unloading signal. Rotated to contact the knock-up plate 113 and the paper P.
    [49] Optionally, when the paper feed cassette 111 does not have a knock-up plate 113 supported by an elastic spring as in the facsimile apparatus, but consists of a fixed frame or a plate (not shown), the sensing actuator operating portion may be a pickup roller ( In order to operate the sensing actuator 119 during the pickup operation of the 131, an operating lever formed on the pickup roller 131 or the shaft 133 so as to protrude toward the operating member 120 or the sensing trigger 121 of the sensing actuator 119. It may consist of (not shown).
    [50] In this case, like the partial circumferential surface portion 132 of the pickup roller 131, the actuating lever moves the sensing trigger 121 of the sensing actuator 119 before and after the pickup operation of the pickup roller 131 to the optical sensor 125. Is displaced to the second position outputting the paper loading signal, and during the pick-up operation, the sensing trigger 121 of the sensing actuator 119 is displaced to the first position at which the sensor 125 outputs the paper unloading signal.
    [51] The control unit may include a speaker (not shown) that notifies the feeding error to the outside of a sound, a liquid crystal display unit (not shown) that displays the paper feeding error externally, in order to notify the outside of the feeding error when determining the feeding error. The display device may further include an external notification unit (not shown) configured as one of all of the liquid crystal display units.
    [52] 3 to 6 will be described in detail with respect to the operation of the automatic sheet feeder 100 having a sheet feeding error detecting device 117 of the present invention configured as described above.
    [53] First, when the office device is 'on' in the state that the paper (P) is not loaded, as shown in Figure 3, the operating member 120 of the sensing actuator 119 is a paper sensing groove ( 115) Therefore, the sensing trigger 121 connected to the operation member 120 is disposed between the light emitting part and the light receiving part of the light sensor 125 to block the light emitted from the light emitting part, so that the light sensor 125 is a low signal, that is, paper The unloading signal is output, and the controller recognizes that the paper is not loaded (S1, Fig. 6).
    [54] At this time, as shown in FIG. 3, the partial circumferential surface portion 132 of the pickup roller 131 is spaced apart without contacting the knockup plate 113, so that the knockup plate 113 is maintained at the raised position.
    [55] Thereafter, after the paper P is loaded on the knock-up plate 113, and the paper feed cassette 111 is mounted on the office equipment, as shown in Figs. 4A and 4B, the paper P is the sensing actuator 119. Figs. Lift the operating member 120 of the up). At this time, the sensing trigger 121 of the sensing actuator 119 connected to the operating member 120 is raised.
    [56] As a result, the light receiving unit of the light sensor 125 receives the light generated by the light emitting unit and generates a high signal, that is, a paper loading signal, to the controller (S2), whereby the controller P feeds the paper cassette 111. It is detected that it is mounted on the (S3).
    [57] In this state, when a pick-up command for printing or scanning the paper P is input from the external PC (S4), the control unit applies power to the drive motor to rotate the pickup roller 131 (S5).
    [58] Therefore, as shown in FIGS. 5A and 5B, the partial circumferential surface portion 132 of the pickup roller 131 is in contact with the paper P and simultaneously with the friction pad (not shown) while pressing the knockup plate 113 downward. The paper P is separated into sheets by the frictional force with the same paper separating apparatus and fed into the office equipment.
    [59] At this time, the operation member 120 of the sensing actuator 119 is lowered together with the paper P and the knock-up plate 113 by its own weight, and thus, the sensing trigger 121 of the sensing actuator 119 is Located between the light emitting unit and the light receiving unit of the optical sensor 125 to block the light emitted from the light emitting unit.
    [60] Accordingly, the optical sensor 125 outputs a low signal, that is, a paper unloading signal, and accordingly, the controller determines that the paper P is normally picked up, and proceeds to the above step S2.
    [61] However, in step S5, if the pickup roller 131 does not rotate due to its own failure, poor power transmission such as a gear train, etc., the optical sensor 125 continues to output only a high signal, that is, a paper loading signal and outputs a paper unloading signal. Do not print.
    [62] In this way, even if the predetermined time elapsed after the pick-up command is issued, if the paper unloading signal is not output from the optical sensor 125 (S6), the controller determines that the pick-up roller 131 is in an operation failure, and the office equipment At the same time, the sound is notified to the outside through the speaker, the liquid crystal display, or the like, and is displayed as text (S7).
    [63] As described above, the paper feed error detection device and method of the office equipment of the present invention is to provide a paper feed error due to a malfunction of the pick-up roller with only a paper detection sensor installed in the paper feed cassette without additionally installing a separate paper detection sensor. It can be seen that this provides a simpler configuration and a lower manufacturing cost.
    [64] In the above, certain preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and any person having ordinary skill in the art to which the present invention pertains without departing from the spirit and spirit of the present invention as claimed in the claims may have various modifications and Modifications may be made.
    权利要求:
    Claims (10)
    [1" claim-type="Currently amended] An office machine comprising a paper feed tray or cassette mounted to the frame for stacking a frame, a document or a paper, and a pick-up unit for picking up and transporting paper loaded in the paper cassette.
    A sensing actuator installed to rotate in the frame with respect to the paper feed cassette so as to be displaced when paper is loaded in the paper feed cassette;
    A paper sensor unit for outputting a paper loading signal and a paper unloading signal according to the displacement of the sensing actuator;
    A sensing actuator operating unit for operating the sensing actuator to output a paper unloading signal to the paper detecting sensor unit during a pickup operation of the pickup unit; And
    And a control unit which stops the office equipment by determining whether the paper unloading signal is output or not when the paper unloading signal is not output. Sensing device.
    [2" claim-type="Currently amended] 2. The paper feeding error detecting apparatus of claim 1, wherein the paper detecting sensor unit comprises an optical sensor installed in the frame and having a light emitting unit and a light receiving unit.
    [3" claim-type="Currently amended] The method of claim 2, wherein the sensing actuator,
    An operation member provided with respect to the paper feed cassette so as to be elevated by paper loaded in the paper feed cassette;
    According to the operation of the operating member, the light sensor is displaced between a first position for outputting a paper unloading signal and a second position for outputting a paper loading signal to operate the light sensor. A sensing trigger arranged to move between the sensing triggers; And
    And a support rod pivotally supported on the frame and integrally formed with the operation member and the sensing trigger.
    [4" claim-type="Currently amended] The method of claim 3, wherein the sensing actuator operating unit,
    A paper sensing groove provided in the paper feed cassette so as to elastically support the paper to be lifted, and accommodating the work member so that the work member is lifted upward by the paper when the paper is loaded in the paper feed cassette. One knockup plate; And
    Before and after the pick-up operation of the pick-up unit in the state that paper is loaded, the knock-up plate is spaced apart from the knock-up plate and the paper so as to displace the sensing trigger to the second position by holding the knock-up plate in a raised position. And a partial circumferential surface portion constituting a portion of the pick-up portion formed in the pick-up portion in such a manner as to move the knock-up plate to a lowered position to be in contact with the knock-up plate and a paper to displace the sensing trigger to the first position. Feeding error detection device of the office equipment, characterized in that.
    [5" claim-type="Currently amended] 5. The feeding error detecting apparatus of an office equipment according to claim 4, wherein said portion of said pickup portion is one of a pickup roller and a shaft of said pickup roller.
    [6" claim-type="Currently amended] The method of claim 1, wherein the sensing actuator operating unit is configured to displace the sensing actuator to a second position where the paper sensing sensor unit outputs a paper loading signal before and after the pickup operation of the pickup unit in the state that the paper is loaded. And an actuating lever provided in the pick-up unit with respect to the sensing actuator to displace the sensing actuator to a first position in which the paper sensing sensor unit outputs a paper unloading signal during a pickup operation. Error detection device.
    [7" claim-type="Currently amended] The apparatus of claim 1, wherein the controller further comprises an external notification unit including one of a speaker that notifies the paper feed error to the outside when the paper feed error is determined, a display unit which displays the paper feed error as a text on the outside, and both the speaker and the display unit. Feeding error detection device of the office equipment, characterized in that it comprises a.
    [8" claim-type="Currently amended] Determining whether a paper loading signal is output from a paper detection sensor unit which is operated by a sensing actuator provided with respect to a paper tray or a cassette;
    Determining whether the pickup unit driving signal is input when the paper loading signal is output;
    Driving the pickup unit when the pickup unit driving signal is input;
    Determining whether the paper unloading signal is output from the paper detection sensor unit when the pickup unit is driven; And
    Determining a paper feeding error when the paper unloading signal is not output, and stopping the machine.
    [9" claim-type="Currently amended] The method of claim 8, wherein the step of determining whether the paper unloading signal is output includes determining the output of the paper unloading signal from the input of the pickup unit driving signal until a predetermined time elapses. To detect feeding errors in office equipment.
    [10" claim-type="Currently amended] 9. The method of claim 8, wherein the step of stopping the device comprises notifying a paper feed error to the outside through a speaker, displaying the paper feed error to the outside through a display unit, and through both the speaker and the display unit. Paper feeding error detection method of the office equipment, characterized in that it further comprises one of the sound or display to the outside.
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    同族专利:
    公开号 | 公开日
    US7063315B2|2006-06-20|
    US20060208418A1|2006-09-21|
    KR100476977B1|2005-03-17|
    US20040195757A1|2004-10-07|
    US20060208415A1|2006-09-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-12-09|Application filed by 삼성전자주식회사
    2002-12-09|Priority to KR10-2002-0077849A
    2004-06-17|Publication of KR20040050719A
    2005-03-17|Application granted
    2005-03-17|Publication of KR100476977B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2002-0077849A|KR100476977B1|2002-12-09|2002-12-09|apparatus and method for sensing pickup error of office machine|
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