Developer concentration measuring device of the image developing apparatus

专利摘要:
The present invention relates to a developer concentration measuring apparatus of an image developing apparatus, comprising: a developer concentration measuring apparatus of an image developing apparatus for measuring a concentration of a developer supplied from a mixed container to a developer, the light being disposed between the mixed container and the developer; The variable body portion for adjusting the thickness of the developer to pass through the light, and the light emitting portion is provided on one side of the variable body portion for generating light, the light emitting portion is installed on the other side of the variable body portion to receive the light generated from the light emitting portion ( And a driving unit provided at one end of the light receiving unit for measuring the concentration of the developer according to light intensity, and for providing power for adjusting the thickness of the developer passing through the variable body unit. Therefore, the developer concentration measuring apparatus of the image developing apparatus according to the present invention can measure the concentrations of yellow, cyan and magenta developer in use in the image developing apparatus, and in particular, the thickness of the developer. Since the concentration is measured by controlling the concentration of the black developer, which absorbs light and makes it difficult to pass, it has an excellent effect.
公开号:KR19990074122A
申请号:KR1019980007514
申请日:1998-03-06
公开日:1999-10-05
发明作者:유용백
申请人:윤종용；삼성전자 주식회사；
IPC主号:

专利说明:

Developer concentration measuring device of the image developing apparatus
The present invention relates to a developer density measuring apparatus of an image developing apparatus, and more particularly, to a developer density measuring apparatus of an image developing apparatus capable of measuring a density by adjusting a thickness of a developer supplied to a developer of an image developing apparatus.
In general, a photosensitive medium such as a photosensitive belt or a photosensitive drum is used in the image developing apparatus. As is known, the surface of the photosensitive medium can not only be charged but also the electrostatic latent image can be formed by selectively changing the potential level by scanning of the beam. The image imaging apparatus is classified into dry and wet depending on the state of the toner attached to the electrostatic latent image. In the wet method, a developer mixed with a liquid toner and a carrier is used for printing.
1 is a schematic configuration diagram of a general image forming apparatus.
Referring to the drawings, the image forming apparatus includes a photosensitive belt 14 rotating at an endless track while being supported by a driving roller 11, a steering roller 12, a counter roller 13, and the like, and at least one developing device 17a. , 17b, 17c, and 17d and the transfer roller 25 are included. The surface of the photosensitive belt 14 can be maintained in a charged state by the corona device 16, and the charged state of the surface of the photosensitive belt 14 is installed in the vicinity of each of the developing devices 17a, 17b, 17c, and 17d. The potential can be changed by scanning a laser beam from the scanning devices 18a, 18b, 18c, 18d. The beam scanning by the laser scanning devices 18a, 18b, 18c, and 18d forms an electrostatic latent image on the surface of the photosensitive belt.
The developing units 17a, 17b, 17c, and 17d can develop colors of black, yellow, cyan and magenta according to the color of the pigment, and also the laser scanning devices 18a, 18b, 18c, and 18d also form an electrostatic latent image for the color. Developers 17a, 17b, 17c, and 17d are filled with a developer, and electrostatic latent images formed on the surface of the photosensitive belt 14 through the developer rollers 20a, 20b, 20c, and 20d respectively provided in the developer. Can be attached to The backup rollers 19a, 19b, 19c, and 19d are provided corresponding to the developing rollers 20a, 20b, 20c, and 20d, respectively. The cleaning roller 23 has a function of completely removing the carrier from the toner image formed on the photosensitive belt 14, and the heating roller 24 assists the function of the cleaning roller 23 by evaporating the carrier. The toner image attached to the photosensitive belt 14 is transferred to the transfer roller 25 and can be transferred from the transfer roller 25 to the paper 27 by the surface energy difference. The printing paper 27 passes between the transfer roller 25 and the fixing roller 26. The eraser 15 performs a function of completely removing the charged state remaining on the photosensitive belt 14 so that a new electrostatic latent image can be formed.
The developer filled in each of the developing devices 17a, 17b, 17c, and 17d is a mixture of toner and carrier. Toner is stored in the toner containers 19a, 19b, 19c, and 19d and supplied to the mixed containers 21a, 21b, 21c, and 21d through the pumps 20a, 20b, 20c, and 20d, and the carrier is the carrier container 28. And are supplied to the mixed containers 21a, 21b, 21c, and 21d, respectively. In the mixed containers 21a, 21b, 21c, and 21d, the toner and the carrier are mixed at appropriate concentrations, and supplied to the respective developing units 17a, 17b, 17c, and 17d through the pumps 22a, 22b, 22c, and 22d. The carrier container 28 also stores the carrier recovered from the cleaning apparatus including the cleaning roller 23 and the heating roller 24.
In the image forming apparatus as described above, the concentration of the developer supplied to each of the developing devices 17a, 17b, 17c, and 17d must be kept constant. That is, the mixing ratio of the toner and the carrier should be maintained at an appropriate level, which is from the respective toner containers 19a, 19b, 19c, 19d and the carrier container 28 to the respective mixing containers 21a, 21b, 21c, 21d. By adjusting the flow rate supplied. In addition, in order to adjust the mixing ratio of the toner and the carrier, a device capable of detecting the concentration of the developer must be provided. However, conventionally, there is no suitable device capable of detecting the concentration of the developer in the image developing apparatus.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a developer concentration measuring apparatus of an image developing apparatus capable of detecting the concentration of the developer.
1 is a schematic configuration diagram of a general image forming apparatus.
2 is a schematic configuration diagram of an image forming apparatus equipped with a developer concentration measuring apparatus according to the present invention;
3 is a configuration diagram of a developer concentration measuring apparatus of the image developing apparatus according to the first embodiment of the present invention.
4 is a configuration diagram of a developer concentration measuring apparatus of the image developing apparatus according to the second embodiment of the present invention.
<Brief Description of Major Codes in Drawings>
17a, 17b, 17c, 17d ... developing laser 18a, 18b, 18c, 18d ...
30 ... variable body part 30a, 30b, 30c, 30d ... developer concentration measuring device
31a, 31b ... Board 32 ... Brace
33a, 33b, 43a, 43b ... Sealing member 35
50 ... light emitter 60 ... light emitter
70,80 ... Drive
The developer concentration measuring apparatus of the image developing apparatus according to the present invention for achieving the above object, in the developer concentration measuring apparatus of the image developing apparatus for measuring the concentration of the developer supplied from the mixed container to the developer, A variable body unit installed between the developing units to adjust the thickness of the developer so that light can pass therethrough, a light emitting unit installed at one side of the variable body unit to generate light, and a light emitting unit installed at the other side of the variable main unit, It includes a light receiving unit for receiving the light generated from the light and measuring the concentration of the developer in accordance with the amount of light received and a driving unit for providing power to adjust the thickness of the developer passing through the variable main body portion at one end.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 2 is a schematic configuration diagram of an image forming apparatus in which a developer concentration measuring apparatus is installed, and is arranged between a plurality of mixed containers 21a, 21b, 21c, and 21d and a developer 17a, 17b, 17c, and 17d. The developer concentration measuring apparatuses 30a, 30b, 30b, and 30d are respectively provided. The rest of the configuration is the same as that of the conventional image forming apparatus.
The operation of the image forming apparatus in which the developer concentration measuring apparatus according to the present invention having such a structure is installed is as follows.
As shown in FIG. 2, the developing solution 35 (see FIG. 3) flows from the plurality of mixed containers 21a, 21b, 21c, and 21d to the developing units 17a, 17b, 17c, and 17d. While the developer is flowing, the concentration of the developer is measured by the developer concentration measuring apparatuses 30a, 30b, 30b, and 30d as necessary.
3 is a configuration diagram of a developer concentration measuring apparatus of an image developing apparatus according to a first embodiment of the present invention, wherein the substrates 31a and 31b are formed on one inner side of a pair of substrates 31a and 31b formed of a light transmitting material. Brace portion 32 to widen the interval of) is provided. The developing solution 35 flows between the gaps of the substrates 31a and 31b. Sealing members 33a and 33b are provided at both ends of the substrates 31a and 31b to prevent the developer 35 flowing therebetween from flowing out. The light emitting unit 50 for emitting light is provided on one side of the substrate (31a, 31b), the light receiving unit 60 for receiving the light generated by the light emitting unit 50 and measure the amount. The other end of the substrate 31a is provided with a driving unit 70 moving left and right like a solenoid.
An operation of the developer concentration measuring apparatus of the image developing apparatus according to the first exemplary embodiment having the above structure will be described below with reference to FIG. 3.
During normal operation of the image imaging apparatus, the developer 35 of the mixed container 21a, 21b, 21c, 21d (see FIG. 2) passes through the developer concentration measuring apparatuses 30a, 30b, 30b, 30d, and the developer 17a, 17b. , 17c, 17d (see FIG. 2). At this time, the pair of substrates 31a and 31b remain parallel to each other, and the developer 35 freely flows therebetween.
On the other hand, when the concentration of the developing solution 35 is to be measured during the operation of the image imaging apparatus, first, the driving unit 70 advances one end of the substrate 31a in the direction of another substrate 31b, so that both substrates 31a are formed. One end of 31b is in contact with each other. Therefore, the developing solution becomes a triangular prism shape, the width of which is narrow in the downward direction is easy to transmit light, and the width of the developing solution is wide in the upper direction, making it difficult to transmit light. The sealing members 33a and 33b seal both ends of the substrates 31a and 31b to prevent the developer 35 filled in the substrates 31a and 31b from leaking out. At this time, the light emitting unit 50 projects the light in the direction of the developer 35, and the light transmitted through the developer 35 is detected by the light receiving unit 60 and the amount thereof is measured.
4 is a configuration diagram of a developer concentration measurement apparatus of an image developing apparatus according to a second exemplary embodiment of the present invention, in which developer inside of a pair of substrates 31a and 31b formed of a light-transmitting material flows out to the outside. Sealing members (43a, 43b) to prevent the installation is provided. A light emitting unit 50 for generating light is provided on one side of the substrates 31a and 31b, and a light receiving unit 60 for receiving the light generated by the light emitting unit 50 and measuring the amount thereof is provided on the other side. At one end of the sealing member 43a and 43b in the same direction, a driving unit 80 that moves left and right like a solenoid is provided.
An operation of the developer concentration measuring apparatus of the image developing apparatus according to the second embodiment of the present invention having such a structure will be described below with reference to FIG. 4.
During normal operation of the image imaging apparatus, the developer 35 of the mixed container 21a, 21b, 21c, 21d (see FIG. 2) passes through the developer concentration measuring apparatuses 30a, 30b, 30b, 30d, and the developer 17a, 17b. , 17c, 17d (see FIG. 2). At this time, the developer concentration measuring apparatuses 30a, 30b, 30b, and 30d are sufficiently spaced apart in parallel to the substrates 31a and 31b so that the developer proceeds normally at intervals sufficiently spaced in parallel.
On the other hand, when trying to measure the concentration of the developer (35, see Fig. 3) during the operation of the image imaging apparatus, first, if the driving unit 80 is moved evenly in one end of each of the sealing member (43a, 43b), The substrate 31a is moved horizontally in the direction of another substrate 31b so that the distance between the substrates 31a and 31b is close to each other. The sealing members 43a and 43b seal both ends of the substrates 31a and 31b to prevent the developer 35 filled in the substrates 31a and 31b from leaking out. In this case, the light is projected from the light emitting unit 50 in the direction of the developer 35, and the light transmitted through the developer 35 is detected by the light receiving unit 60 to measure the amount thereof.
As described above, the developer concentration measuring apparatus of the image developing apparatus according to the present invention can measure the concentration of yellow, cyan, and magenta developer in use in the image developing apparatus, In particular, since the concentration is measured by adjusting the thickness of the developer, it has an excellent effect in measuring the concentration of the black developer, which absorbs light and makes it difficult to pass.

权利要求:
Claims (6)
[1" claim-type="Currently amended] In the developer concentration measuring apparatus of the image developing apparatus for measuring the concentration of the developer 35 supplied from the mixed containers 21a, 21b, 21c, 21d to the developing devices 17a, 17b, 17c, 17d,
A variable body part installed between the mixing containers 21a, 21b, 21c, and 21d and the developing units 17a, 17b, 17c, and 17d to adjust the thickness of the developer to allow light to pass therethrough;
A light emitting unit 50 installed at one side of the variable body unit to generate light;
A light receiving unit 60 installed at the other side of the variable body unit to receive the light generated by the light emitting unit 50 and to measure the concentration of the developer according to the amount of light received; And
And a driving part installed at one end of the variable body part to provide power for adjusting the thickness of the developer passing through the variable body part.
[2" claim-type="Currently amended] The method of claim 1, wherein the variable body portion
A pair of substrates 31a and 31b in which the developer 35 flows and is formed of a light transmitting material therebetween;
A brace part 32 installed at the other inner ends of the substrates 31a and 31b to widen the gap between the light transmitting substrates 31a and 31b; And
And a sealing member (33a, 33b) provided at both ends of the substrate (31a, 31b) to block the outflow of the developer (35) contained therebetween.
[3" claim-type="Currently amended] 3. The developer concentration measuring apparatus of claim 2, wherein a driving unit (70) is installed below the substrate (31a) to push or pull the lower portion of the substrate (31a).
[4" claim-type="Currently amended] The method of claim 1, wherein the variable body portion
A pair of substrates 31a and 31b formed between the developer 35 and a light transmitting material therebetween; And
And a pair of sealing members 43a and 43b installed at both ends of the substrates 31a and 31b to block the outflow of the developer 35 flowing between the substrates 31a and 31b. Developer concentration measurement device.
[5" claim-type="Currently amended] 5. The driving unit 80 is installed at one end of the sealing member 43a and 43b in the same direction, respectively, to uniformly push or pull the sealing member 43a and 43b, thereby removing the substrates 31a and 31b. A developer concentration measuring device, characterized in that for adjusting the interval in parallel.
[6" claim-type="Currently amended] The developing solution concentration measuring device according to claim 2 or 4, wherein the sealing members (33a, 33b) are corrugated to be stretchable.

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同族专利:

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公开号 | 公开日

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KR100322554B1|2002-06-24|

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JPH11295994A|1999-10-29|

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1998-03-06|Application filed by 윤종용, 삼성전자 주식회사

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1998-03-06|Priority to KR1019980007514A

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1999-10-05|Publication of KR19990074122A

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2002-06-24|Application granted

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2002-06-24|Publication of KR100322554B1

优先权:

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申请号 | 申请日 | 专利标题

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KR1019980007514A|KR100322554B1|1998-03-06|1998-03-06|A liquid developer densitometer of liquid printer|