KR100547101B1 - Cleaning apparatus for liquid printer - Google Patents
Cleaning apparatus for liquid printer Download PDFInfo
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- KR100547101B1 KR100547101B1 KR1019980055752A KR19980055752A KR100547101B1 KR 100547101 B1 KR100547101 B1 KR 100547101B1 KR 1019980055752 A KR1019980055752 A KR 1019980055752A KR 19980055752 A KR19980055752 A KR 19980055752A KR 100547101 B1 KR100547101 B1 KR 100547101B1
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- South Korea
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- cleaning roller
- cleaning
- roller
- toner particles
- toner
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
- G03G15/161—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support with means for handling the intermediate support, e.g. heating, cleaning, coating with a transfer agent
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
- G03G15/168—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer with means for conditioning the transfer element, e.g. cleaning
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/16—Transferring device, details
- G03G2215/1647—Cleaning of transfer member
- G03G2215/1652—Cleaning of transfer member of transfer roll
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Cleaning In Electrography (AREA)
Abstract
습식 인쇄기의 감광매체로부터 토너화상을 전사받아 인쇄용지로 전사시키는 전사롤러에 접촉회전되면서, 그 전사롤러에 잔류하는 토너입자 등의 이물질을 크리닝하기 위한 크리닝롤러를 포함하는 습식 인쇄기용 크리닝장치에 있어서, 크리닝롤러에 접촉되어 회전가능하게 설치되며, 그 외주면으로부터 나사산형으로 돌출형성된 돌출부를 가지는 보조크리닝롤러를 포함하여, 돌출부에 의해 크리닝롤러에 고착된 토너입자를 긁어내어 제거할 수 있도록 된 것을 특징으로 하는 습식 인쇄기용 크리닝장치가 개시된다.A cleaning apparatus for a wet printing machine comprising a cleaning roller for cleaning a foreign substance such as toner particles remaining on the transfer roller while being rotated in contact with a transfer roller that receives a toner image from a photosensitive medium of a wet printing machine and transfers the same to a printing paper. And an auxiliary cleaning roller which is rotatably installed in contact with the cleaning roller and has a protrusion formed in a threaded shape from the outer circumferential surface thereof, so that the toner particles fixed to the cleaning roller by the protrusion can be scraped off and removed. A cleaning apparatus for a wet printer is disclosed.
Description
본 발명은 습식 인쇄기용 크리닝장치에 관한 것으로, 상세하게는 감광매체로부터 화상을 전사받는 전사롤러를 크리닝하기 위해 마련된 크리닝롤러를 크리닝하기 위한 습식 인쇄기용 크리닝장치에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for a wet printer, and more particularly, to a cleaning apparatus for a wet printer for cleaning a cleaning roller provided for cleaning a transfer roller which receives an image from a photosensitive medium.
일반적으로 레이저 프린터, 복사기와 같은 습식인쇄기는 고체상의 토너와 용매의 역할을 하는 액상의 캐리어가 혼합된 현상액을 감광벨트와 같은 감광매체에 형성된 정전잠상 영역에 부착하여 화상을 형성하고, 형성된 화상을 전사롤러를 통해 인쇄용지에 인쇄하는 프린팅기기로 그 일예가 도 1에 도시되어 있다.In general, wet printers such as laser printers and copiers form images by attaching a developer mixed with a solid toner and a liquid carrier serving as a solvent to an electrostatic latent image region formed on a photosensitive medium such as a photosensitive belt. An example of the printing apparatus for printing on printing paper through a transfer roller is shown in FIG.
도 1을 참조하면, 습식인쇄기는 복수의 가이드롤러(11,12,13)에 지지되어 무한궤도상을 주행하는 감광벨트(10)와, 적어도 하나이상의 현상기(14)와, 전사롤러(15)를 포함한다. Referring to FIG. 1, a wet printing machine is supported by a plurality of guide rollers 11, 12, and 13, and includes a photosensitive belt 10 for traveling on an orbit, at least one developing device 14, and a transfer roller 15. It includes.
상기 감광벨트(10)는 상기 가이드롤러(11,12,13)에 지지되어 주행되면서, 대전기(16)에 의해 그 표면이 소정 전위의 대전상태로 유지되며, 각 현상기(14)에 근접설치된 레이저 주사유니트(17)에서 주사된 빔(beam)에 의해 전위가 변화됨으로써, 정전잠상이 형성된다. 상기 각 현상기(14)는 감광벨트(10)의 정전잠상 영역에 토너와 액상의 캐리어가 혼합된 형상액을 부착한 후, 토너를 필름화하고 필름화된 토너이외의 대부분의 현상액은 감광벨트(10)로부터 제거한다. 그리고, 필름화된 토너화상은 표면에너지의 차이에 의해 전사롤러(15)로 전사되어 그 전사롤러(15)와 정착롤러(18) 사이로 통과되는 인쇄용지(P)로 인쇄된다.The photosensitive belt 10 is supported by the guide rollers 11, 12, and 13, and the surface of the photosensitive belt 10 is maintained at a predetermined potential by the charger 16, and is installed in close proximity to each of the developing devices 14. The electrostatic latent image is formed by changing the potential by the beam scanned by the laser scanning unit 17. Each of the developer 14 attaches a shape liquid containing a mixture of toner and a liquid carrier to the electrostatic latent image area of the photosensitive belt 10, and then forms the toner and most of the developer except for the filmed toner has a photosensitive belt ( 10) Remove from. Then, the filmed toner image is transferred to the transfer roller 15 due to the difference in surface energy, and is printed by printing paper P passing between the transfer roller 15 and the fixing roller 18.
한편, 상기의 구성에서 상기 전사롤러(15)는 장시간 인쇄동작을 실행하는 과정에서 먼지 또는 토너입자 등에 의해 오염이 발생하게 된다. 이러한 점을 감안하여, 크리닝롤러(19)를 전사롤러(15)에 접촉하여 구동하게 설치하여, 그 전사롤러(15)의 표면을 크리닝할 수 있도록 하였다. On the other hand, in the above configuration, the transfer roller 15 is contaminated by dust or toner particles during the printing operation for a long time. In view of this point, the cleaning roller 19 is provided in contact with the transfer roller 15 to be driven so that the surface of the transfer roller 15 can be cleaned.
그런데, 상기 구성에 있어서, 상기 크리닝롤러(15)도 인쇄회수가 증가하거나 시간이 경과함에 따라서, 그 표면에 토너입자 등이 축적되게 된다. 그리고, 축적된 토너입자는 매우단단하게 굳어져 고착됨으로써, 제거하기가 어렵게 된다. 따라서, 크리닝롤러(15)는 전사롤러(15)를 크리닝하는 본래의 기능을 정상적으로 수행하지 못한다는 문제점이 있다. In the above structure, however, the cleaning roller 15 also accumulates toner particles or the like on the surface thereof as the number of times of printing increases or as time passes. Then, the accumulated toner particles are hardened and fixed very hardly, making it difficult to remove them. Therefore, there is a problem that the cleaning roller 15 does not normally perform the original function of cleaning the transfer roller 15.
본 발명은 상기와 같은 문제점을 해결하기 위해 창안된 것으로, 전사롤러를 크리닝하는 크리닝롤러의 표면을 크리닝할 수 있도록 된 습식 인쇄기용 크리닝장치를 제공하는데 그 목적이 있다. The present invention has been made to solve the above problems, it is an object of the present invention to provide a cleaning device for a wet printing machine that can clean the surface of the cleaning roller for cleaning the transfer roller.
상기 목적을 달성하기 위한 본 발명에 따른 습식 인쇄기용 크리닝장치는 습식 인쇄기의 감광매체로부터 토너화상을 전사받아 인쇄용지로 전사시키는 전사롤러에 접촉회전되면서, 그 전사롤러에 잔류하는 토너입자 등의 이물질을 크리닝하기 위한 크리닝롤러를 포함하는 습식 인쇄기용 크리닝장치에 있어서, 상기 크리닝롤러에 접촉되어 회전가능하게 설치되며, 그 외주면으로부터 나사산형으로 돌출형성된 돌출부를 가지는 보조크리닝롤러를 포함하여, 상기 돌출부에 의해 상기 크리닝롤러에 고착된 토너입자를 긁어내어 제거할 수 있도록 된 것을 특징으로 한다. Cleaning apparatus for a wet printer according to the present invention for achieving the above object is a foreign matter such as toner particles remaining in the transfer roller while being rotated in contact with the transfer roller for transferring the toner image from the photosensitive medium of the wet printer to the transfer paper; A cleaning apparatus for a wet printing machine comprising a cleaning roller for cleaning the gas, comprising: an auxiliary cleaning roller which is rotatably installed in contact with the cleaning roller, the auxiliary cleaning roller having a protrusion formed in a threaded shape from an outer circumferential surface thereof. It characterized in that the toner particles adhered to the cleaning roller can be scraped off.
이하 첨부된 도면을 참조하여, 본 발명의 바람직한 실시예에 따른 크리닝장치를 자세히 설명하기로 한다. Hereinafter, a cleaning apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 실시예에 따른 크리닝장치가 채용된 습식 인쇄기의 일부를 개략적으로 나타내 보인 구성도이다. 여기서, 도 1에 도시된 도면의 구성요소와 동일한 구성요소에 대해서는 동일한 참조부호를 부여하였다. 2 is a configuration diagram schematically showing a part of a wet printing machine employing a cleaning apparatus according to the present embodiment. Here, the same reference numerals are given to the same components as those in the drawings shown in FIG. 1.
도 2를 참조하면, 본 실시예에 따른 크리닝장치는 전사롤러(15)에 접촉회전되는 크리닝롤러(19)를 크리닝하기 위한 보조크리닝롤러(20)를 구비하는데 그 특징이 있다. Referring to FIG. 2, the cleaning apparatus according to the present exemplary embodiment includes an auxiliary cleaning roller 20 for cleaning the cleaning roller 19 which is rotated in contact with the transfer roller 15.
상기 보조크리닝롤러(20)는 상기 크리닝롤러(19)의 표면에 고착된 토너입자 등의 이물질을 긁어내어 크리닝하기 위한 것으로, 그 크리닝롤러(19)에 접촉회전되게 설치되어 있다. 이 보조크리닝롤러(20)는 도 3 및 도 4에 도시된 바와 같이, 그 외주로부터 돌출현성된 돌출부(20a)를 가진다. 상기 돌출부(20a)는 나사산형으로 보조크리닝롤러(20)의 외부에 연속적으로 현성되어 있다. 이러한 돌출부(20a)는 상기 크리닝롤러(19)의 표면에 고착된 토너입자 등을 긁어서 뜯어냄으로써, 효과적으로 제거하기 위해 마련된 것이다. 여기서, 상기 보조크리닝롤러(20)는 금속재질로 제작되며, 상기 돌출부(20a)는 상기 금속성 보조크리닝롤러(20)의 외주에 일체로 형성된다. The auxiliary cleaning roller 20 is for scraping and cleaning foreign substances such as toner particles adhered to the surface of the cleaning roller 19, and is installed in contact with the cleaning roller 19 in contact rotation. As shown in Figs. 3 and 4, this auxiliary cleaning roller 20 has a projection 20a protruding from its outer circumference. The protruding portion 20a is continuously present on the outside of the auxiliary cleaning roller 20 in the form of a thread. The protrusion 20a is provided to effectively remove the toner particles, etc., which are fixed to the surface of the cleaning roller 19 by scraping it off. Here, the auxiliary cleaning roller 20 is made of a metal material, the protrusion 20a is integrally formed on the outer circumference of the metallic auxiliary cleaning roller 20.
한편, 상기 보조크리닝롤러(20)의 내부에는 히트램프(22)가 더 설치되는 것이 바람직하다. 상기 히트램프(22)는 소정의 구동원(미도시)에 의해 구동되어 상기 보조크리닝롤러(20)를 가열함으로써, 보조크리닝롤러(20)의 가열된 열에 의해 크리닝롤러(19)에 고착된 토너입자를 용융시켜 제거하기 위해 마련된 것이다. 이러한 히트램프(22)는 상기 보조크리닝롤러(20)의 내부에 중공을 형성하여, 그 중공에 설치하게 된다. On the other hand, it is preferable that the heat lamp 22 is further installed inside the auxiliary cleaning roller 20. The heat lamp 22 is driven by a predetermined driving source (not shown) to heat the auxiliary cleaning roller 20, thereby toner particles fixed to the cleaning roller 19 by the heated heat of the auxiliary cleaning roller 20. It is prepared for melting by removing. The heat lamp 22 forms a hollow in the auxiliary cleaning roller 20 and is installed in the hollow.
또한, 본 실시예에 따른 크리닝장치는 크리닝롤러(19)에서 제거되어 하방으로 떨어지는 토너입자 등을 받아서 수용하기 위한 토너받이부재(24)를 더 구비하는 것이 좋다. 상기 토너받이부재(24)는 플레이트형의 구조로서, 상기 크리닝롤러(19)와 보조크리닝롤러(20)의 하방에 설치된다. In addition, the cleaning apparatus according to the present embodiment may further include a toner receiving member 24 for receiving and receiving toner particles and the like removed from the cleaning roller 19 and falling downward. The toner receiving member 24 has a plate-like structure and is installed below the cleaning roller 19 and the auxiliary cleaning roller 20.
상기 구성을 가지는 본 실시예에 따른 습식 인쇄기용 크리닝장치의 크리닝동작을 살펴보면, 보조크리닝롤러(20)는 크리닝롤러(19) 회전방향의 역방향으로 접촉회전되면서, 그 크리닝롤러(19)의 외주를 크리닝하게 된다. 이 때, 상기 보조크리닝롤러(20)의 외주에는 나사선형의 돌출부(20a)가 구비되어 상기 크리닝롤러(19)의 외주에 고착된 토너입자를 효과적으로 긁어내어 제거하게 된다.Looking at the cleaning operation of the cleaning device for a wet printer according to the present embodiment having the above configuration, the auxiliary cleaning roller 20 is rotated in contact in the reverse direction of the cleaning roller 19 rotation direction, the outer circumference of the cleaning roller 19 It will be cleaned. At this time, the outer periphery of the auxiliary cleaning roller 20 is provided with a screw-shaped protrusion 20a to effectively scrape off and remove the toner particles fixed to the outer periphery of the cleaning roller 19.
또한, 상기 히트램프(22)는 소정의 구동원에 의해 구동되면서, 열을 발생시켜 보조크리닝롤러(20)를 가열시키게 된다. 이와같이 하면, 상기 보조크리닝롤러(20)가 고온으로 가열되고, 상기 돌출부(20a) 또한 고온의 상태가 된다. 이와 같이 고온으로 가열된 돌출부(20a)가 상기 크리닝롤러(19)에 접촉되면, 그 크리닝롤러(19)의 표면에 고착되어 있던 토너입자가 열에 의해 녹게 된다. 따라서, 크리닝롤러(19)의 외주에 고착되어 있던 토너입자들은 열에 의해 용융되면서 상기 톨출부(20a)에 의해 효과적으로 제거되어 하방으로 떨러지게 된다. 여기서, 크리닝롤러(19)에서 제거되어 하방으로 떨어지는 토너입자 등의 이물질은 상기 토너받이부재(24)로 떨어져 수용됨으로써, 감광벨트(10) 또는 기타 부품 등에 떨어져 오염시키는 것을 방지할 수 있다. In addition, the heat lamp 22 is driven by a predetermined driving source to generate heat to heat the auxiliary cleaning roller 20. In this way, the auxiliary cleaning roller 20 is heated to a high temperature, and the protrusion 20a is also in a high temperature state. When the protrusion 20a heated at such a high temperature contacts the cleaning roller 19, the toner particles fixed on the surface of the cleaning roller 19 are melted by heat. Therefore, the toner particles fixed to the outer circumference of the cleaning roller 19 are effectively removed by the toll-out portion 20a while being melted by heat, and are shaken downward. Here, foreign matters such as toner particles that are removed from the cleaning roller 19 and then fall downward are received by the toner receiving member 24 so as to prevent contamination by falling off the photosensitive belt 10 or other parts.
한편, 본 실시예에서는 상기 보조크리닝롤러(20)를 가열하기 위하 가열수단으로서, 보조크리닝롤러(20) 내부에 히트램프(22)를 설치한 것을 예로 들어 설명하였으나 이는 예시적인 것에 불과하며, 외부에서 상기 크리닝롤러(19)와 보조크리닝롤러(20)의 접촉부위를 직접 가열할 수 있도록 히트램프를 설치할 수 있는 것은 물론이다. Meanwhile, in the present embodiment, as a heating means for heating the auxiliary cleaning roller 20, the heat lamp 22 is installed inside the auxiliary cleaning roller 20, but it is described as an example. Of course, the heat lamp may be installed to directly heat the contact portion of the cleaning roller 19 and the auxiliary cleaning roller 20.
상술한 바와 같은 본 발명에 따른 습식 인쇄기용 크리닝장치에 따르면, 전사롤러를 크리닝롤러에 돌출부를 가지는 보조크리닝롤러를 접촉회전시킴으로써, 크리닝롤러에 고착된 토너입자를 돌출부에 의해 효과적으로 제거할 수 있다. According to the cleaning apparatus for a wet printer according to the present invention as described above, the toner particles fixed to the cleaning roller can be effectively removed by the protrusion by rotating the transfer roller in contact with the cleaning roller having the protrusion on the cleaning roller.
또한, 히트램프를 설치하여 보조크리닝롤러를 가열함으로써, 크리닝롤러의 표면에 고착된 토너입자를 열에 의해 녹여서 쉽게 제거할 수 있다는 장점이 있다.In addition, by installing a heat lamp to heat the auxiliary cleaning roller, there is an advantage that the toner particles fixed on the surface of the cleaning roller can be easily dissolved by heat.
따라서, 크리닝롤러의 표면이 오염되는 것을 억제하여, 그 크리닝롤러가 전사롤러를 정상적으로 크리닝함으로써, 인쇄되는 화상의 질이 저하되는 것을 방지할 수 있다. Therefore, the surface of the cleaning roller can be suppressed from being contaminated, and the cleaning roller can clean the transfer roller normally, thereby preventing the quality of the image to be printed from being lowered.
마지막으로, 토너받이부재를 크리닝롤러의 하방에 설치하여 크리닝롤러에서 뜯겨져 하방으로 떨어지는 토너입지를 받아냄으로써, 감광벨트 등이 오염되는 것을 방지할 수 있다. Finally, the toner receiving member is installed below the cleaning roller to receive the toner deposit which is torn from the cleaning roller and falls downward, thereby preventing the photosensitive belt from being contaminated.
도 1은 일반적인 습식 인쇄기를 나타내 보인 개략적인 구성도.1 is a schematic diagram showing a typical wet printing machine.
도 2는 본 발명의 실시예에 따른 크리닝장치가 채용된 습식 인쇄기의 일부를 나타내 보인 개략적인 구성도.Figure 2 is a schematic diagram showing a part of a wet printing machine employing a cleaning device according to an embodiment of the present invention.
도 3은 도 2에 도시된 보조크리닝롤러의 개략적인 평면도3 is a schematic plan view of the auxiliary cleaning roller shown in FIG.
도 4는 도 3의 Ⅳ-Ⅳ선을 따라 절개해 보인 개략적인 단면도.4 is a schematic cross-sectional view taken along line IV-IV of FIG. 3.
< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>
10..감광벨트 11,12.13..가이드롤러10..Photosensitive belt 11, 12.13..Guide roller
15..전사롤러 18..정착롤러15. Transfer Roller 18. Fixing Roller
19..크리닝롤러 20..보조크리닝롤러19..cleaning roller 20..auxiliary cleaning roller
20a..돌출부 22..히트램프20a.projection 22.heat lamp
24..토너받이부재24. Toner receiver member
Claims (3)
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KR1019980055752A KR100547101B1 (en) | 1998-12-17 | 1998-12-17 | Cleaning apparatus for liquid printer |
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KR1019980055752A KR100547101B1 (en) | 1998-12-17 | 1998-12-17 | Cleaning apparatus for liquid printer |
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KR100547101B1 true KR100547101B1 (en) | 2006-05-25 |
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Citations (6)
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JPS56122072A (en) * | 1980-02-29 | 1981-09-25 | Toshiba Corp | Cleaning device of electronic copier |
JPS61272771A (en) * | 1985-05-28 | 1986-12-03 | Fuji Photo Film Co Ltd | Wet type electrophotographic developing device |
JPH05232848A (en) * | 1992-02-19 | 1993-09-10 | Seiko Epson Corp | Electrostatic latent image carrier cleaning device |
JPH0736342A (en) * | 1993-07-22 | 1995-02-07 | Sharp Corp | Cleaning device |
JPH08137208A (en) * | 1994-11-11 | 1996-05-31 | Canon Inc | Cleaning device for electrifying roller in image forming device |
JPH10268729A (en) * | 1997-03-27 | 1998-10-09 | Ricoh Co Ltd | Cleaning device for image forming device |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS56122072A (en) * | 1980-02-29 | 1981-09-25 | Toshiba Corp | Cleaning device of electronic copier |
JPS61272771A (en) * | 1985-05-28 | 1986-12-03 | Fuji Photo Film Co Ltd | Wet type electrophotographic developing device |
JPH05232848A (en) * | 1992-02-19 | 1993-09-10 | Seiko Epson Corp | Electrostatic latent image carrier cleaning device |
JPH0736342A (en) * | 1993-07-22 | 1995-02-07 | Sharp Corp | Cleaning device |
JPH08137208A (en) * | 1994-11-11 | 1996-05-31 | Canon Inc | Cleaning device for electrifying roller in image forming device |
JPH10268729A (en) * | 1997-03-27 | 1998-10-09 | Ricoh Co Ltd | Cleaning device for image forming device |
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