KR940003874Y1 - Developing apparatus of an electrophotographic process - Google Patents
Developing apparatus of an electrophotographic process Download PDFInfo
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- KR940003874Y1 KR940003874Y1 KR2019880016296U KR880016296U KR940003874Y1 KR 940003874 Y1 KR940003874 Y1 KR 940003874Y1 KR 2019880016296 U KR2019880016296 U KR 2019880016296U KR 880016296 U KR880016296 U KR 880016296U KR 940003874 Y1 KR940003874 Y1 KR 940003874Y1
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- roller
- toner
- photosensitive drum
- sleeve
- roller sleeve
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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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0808—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer supplying means, e.g. structure of developer supply roller
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
-
- 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
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
- G03G15/0241—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing charging powder particles into contact with the member to be charged, e.g. by means of a magnetic brush
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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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0812—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer regulating means, e.g. structure of doctor blade
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0035—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a brush; Details of cleaning brushes, e.g. fibre density
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안에 의한 전자사진 프로세스의 개략구성도.1 is a schematic configuration diagram of an electrophotographic process according to the present invention.
제2도는 본 고안에 따른 현상부의 부분확대 단면도.2 is a partially enlarged cross-sectional view of a developing part according to the present invention.
제3도는 본 고안의 클리이닝부를 나타낸 설명도.3 is an explanatory view showing a cleaning part of the present invention.
제4도는 종래 전자사진 프로세스의 개략도.4 is a schematic diagram of a conventional electrophotographic process.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1,41 : 감광드럼 3 : 호퍼1,41: photosensitive drum 3: hopper
5,42 : 도전성 롤러 슬리이브 44 : 클리이닝 블레이드5,42: conductive roller sleeve 44: cleaning blade
5a : 마그네트 7 : 비도전성 롤러5a: magnet 7: non-conductive roller
9 : 도전성 고무롤러9: conductive rubber roller
본 고안은 복사기, 레이저 프린터, LED프린터에 있어서, 특히 도전성 롤러 슬리이브를 브러쉬로 마찰대전시켜 자성토너가 감광드럼으로 이송되도록 한 현상부와, 전사후 잔류토너를 비접촉식으로 제거할 수 있는 클리이닝부를 개량한 전자사진 프로세스의 현상장치에 관한 것이다.In the present invention, a copying machine, a laser printer, and an LED printer, in particular, a conductive roller sleeve is friction-charged with a brush so that the magnetic toner is transferred to the photosensitive drum, and a cleaning that can remove the non-contact residual toner after transfer. The developing apparatus of the electrophotographic process which improved a part.
전자사진 프로세스를 응용한 1성분계(成分系)와 2성분계 현상제를 사용하는 종래의 현상장치에 있어서는, 제4도에서와 같이 마그네트 롤러 슬리이브(42)는 자성체로서 자성토너나 비자성 토너가 감광드럼(1)으로 이송될때 슬리이브(42)가 자성체이기 때문에 자성토너가 완전히 이송되지 않게 되며 슬리이브(42)에 바이어스(bias)전원을 공급하기 위하여 별도의 회로를 갖추어야 하는 부담이 있고, 특히 감광드럼(41)에 접촉하는 블레이드를 설치함으로 인해 고유저항 토너에 의해 블레이드에 부하가 발생하여 감광드럼의 사용수명이 짧아진다.In the conventional developing apparatus using a one-component and two-component developer in which an electrophotographic process is applied, as shown in FIG. 4, the magnetic roller sleeve 42 is a magnetic material. Since the sleeve 42 is a magnetic material when it is transferred to the photosensitive drum 1, the magnetic toner is not completely transferred, and there is a burden of having a separate circuit to supply a bias power to the sleeve 42. In particular, by installing the blade in contact with the photosensitive drum 41, the blade is generated by the high-resistance toner, and the service life of the photosensitive drum is shortened.
즉, 자성토너를 사용할 경우 H-커터(닥트 블레이드) (43)에 의한 슬리이브의 회전 구동부하가 발생하게 된다.That is, when the magnetic toner is used, the rotation drive load of the sleeve by the H-cutter (dact blade) 43 is generated.
그리고 클리이닝부는 폴리우레탄재질의 클리이닝 블레이드(44)나 나이론 브러쉬를 감광드럼(41)에 접촉시켜 전사후 남게되는 잔류토너를 제거하게 되므로 이때에도 감광드럼이 기계적 손상을 받게된다.In addition, the cleaning unit may contact the photosensitive drum 41 with the cleaning blade 44 or the nylon brush made of polyurethane to remove the residual toner remaining after the transfer, and thus the photosensitive drum may be subjected to mechanical damage.
본 고안의 목적은 따라서 위와 같은 문제를 해결하기 위하여 토너를 부착하여 감광드럼으로 이송시키는 롤러 슬리이브와, 상기 롤러 슬리이브에 토너가 부착되도록 롤러 슬리이블를 마찰대전시켜 마이너스 극성을 되게하기 위한 마찰대전 수단과, 상기 롤러 슬리이브에 의해 감광드럼으로 이송되는 자성토너와 두께를 일정하게 유지하기 위한 롤러와, 토너 화상이 전사된 후 잔류토너를 제거하기 위한 클리이닝수단을 구비하는 전자사진 프로세스의 현상장치를 제공하는데 있다.Therefore, the object of the present invention is to solve the above problems, the roller sleeve for attaching the toner to transfer to the photosensitive drum, and the friction charge for the negative polarity by frictionally charging the roller sleeve so that the toner is attached to the roller sleeve Means for developing the electrophotographic process including a magnetic toner conveyed to the photosensitive drum by the roller sleeve, a roller for maintaining a constant thickness, and a cleaning means for removing residual toner after the toner image is transferred; To provide a device.
이때, 마찰대전수단은 롤러 슬리이브와, 상기 롤러 슬리이브에 접촉하여 역방향으로 회전하여 마찰시켜주는 브러쉬로 구성되며, 클리이닝 수단은 감광드럼과 소정 거리 이격되어 설치되고 내부에 전압을 인가하여 감광드럼에 남아 있는 잔류 토너를 제거하는 도전성 고무롤러와, 상기 고무롤러와 접촉 회전하면서 고무롤러에 옮겨붙은 토너를 제거하기 위한 브러쉬를 구비하는 것을 특징으로 한다.At this time, the friction charging means is composed of a roller sleeve and a brush for rotating and rubbing in the reverse direction in contact with the roller sleeve, the cleaning means is installed spaced apart from the photosensitive drum by a predetermined distance and applied to the inside of the photosensitive And a conductive rubber roller for removing residual toner remaining in the drum, and a brush for removing the toner transferred to the rubber roller while rotating in contact with the rubber roller.
이하 도면을 참조하여 본 고안의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 고안에 의한 전자사진 프로세스 실시예를 나타낸 개략구성도이다.1 is a schematic diagram showing an embodiment of an electrophotographic process according to the present invention.
107Ω/㎝정도의 고유저항치를 갖는 자성토너의 현상제(4)를 수용하는 호퍼(3)의 하부개구부에 설치된 도전성 롤러 슬리이브(5)를 마찰대전부재인 브러쉬(6)로 마찰대전시켜 도전성 롤러 슬리이브(5)에 현상제(4)가 흡착되게 하는 한편, 비자성체 감광드럼(1)의 담지능력(擔持能力)을 향상시키고 상기 감광드럼(1)의 표면에 반송된 토너두께를 조절함과 동시에 슬리이브의 회전구동부하를 극소화 하도록 슬리이브(5) 상측으로 비도전성 롤러(7)가 채용되어 있다.The conductive roller sleeve 5 provided in the lower opening of the hopper 3 containing the developer 4 of the magnetic toner having a resistivity of about 10 7 ? The developer 4 is adsorbed to the conductive roller sleeve 5, while the carrying capacity of the nonmagnetic photosensitive drum 1 is improved and the toner conveyed to the surface of the photosensitive drum 1 The non-conductive roller 7 is adopted above the sleeve 5 so as to adjust the thickness and minimize the rotational driving load of the sleeve.
아울러 감광드럼(1)의 전하에 의해 형성된 정전잠상에 접촉하고 정전상을 가시화하여 페이퍼위에 전사된 후 남게되는 잔류토너는 크리이닝부에서 제거한다.In addition, the residual toner remaining after contacting the electrostatic latent image formed by the charge of the photosensitive drum 1 and being transferred onto the paper by visualizing the electrostatic image is removed from the cleaning unit.
상기 클리이닝부는 도전성 고무롤러(9)와 비자성 브러쉬(10)를 채택하되 감광드럼(1)에 비접촉식으로 설치되게 하고 상기 도전성 고무롤러(9)에 400~600V“+”바이어스 전압을 인가하도록 함으로써 잔류토너를 회수하도록 구성되어 있다.The cleaning unit adopts a conductive rubber roller 9 and a non-magnetic brush 10 to be installed in a non-contact manner to the photosensitive drum (1) and to apply a 400 ~ 600V "+" bias voltage to the conductive rubber roller (9) The residual toner is thereby recovered.
제2도는 본 고안에 따른 현상부의 부분확대 단면도로서 본 고안에 의하면 대전코로나(2)에서 고압(6~7KV)으로 대전시킨후 노광단계를 거쳐 감광드럼(1)에 잠상을 형성시키고 현상부에서 호퍼(3)에 수용된 자성토너 현상제(4)를 토너이송 롤러(4a)의 회전에 의해 도전성 롤러 슬리이브(5) 표면에 자성 토너를 공급하는데 상기 슬리이브(5) 표면은 마찰대전 브러쉬(6)에 의해 마이너스 대전되어 고저항 자성토너가 붙게되며 슬리이브(5)의 회전에 의해 감광드럼(1)으로 이송된다.2 is a partially enlarged cross-sectional view of the developing part according to the present invention, according to the present invention, after charging to a high pressure (6-7 KV) in the charging corona (2), through the exposure step to form a latent image on the photosensitive drum (1) and in the developing part The magnetic toner developer 4 contained in the hopper 3 is supplied with magnetic toner to the surface of the conductive roller sleeve 5 by the rotation of the toner transfer roller 4a. 6) it is negatively charged and adheres to the high-resistance magnetic toner and is transferred to the photosensitive drum 1 by the rotation of the sleeve 5.
그리고 일정량의 토너를 감광드럼(1)에 이송하기 위하여 비도전성 롤러(7)를 슬리이브 상측으로 약 200~400μm정도의 간격을 두고 설치하여 토너층의 두께를 일정하게 유지하고 이 부분에 걸리는 부하를 크게 감소시킨다.Then, in order to transfer a certain amount of toner to the photosensitive drum 1, the non-conductive roller 7 is installed at an interval of about 200 to 400 μm above the sleeve to keep the thickness of the toner layer constant, and the load applied to this portion. Greatly decreases
감광드럼(1)상의 자성토너는 이미지(image)를 형성하여 전사 코로나(2a)에서 고압으로 감광드럼(1)의 이미지를 종이에 이송시켜 정착부로 보내게 되며 남게되는 약간의 잔류토너는 클리이닝부로 넘어간다.The magnetic toner on the photosensitive drum 1 forms an image and transfers the image of the photosensitive drum 1 to paper at high pressure in the transfer corona 2a to the fixing unit, and the remaining toner remaining is cleaned. To wealth.
제3도는 본 고안의 클리이닝부를 도시한다.3 shows a cleaning part of the present invention.
클리이닝부는 도전성 고무롤러(9)와 브러쉬(10)로 구성된다.The cleaning part is composed of a conductive rubber roller 9 and a brush 10.
클리이닝부에서 도전성 고무롤러(9)의 롤러축에 자성토너의 특성에 맞는 바이어스 전압을 인가하여 잔류토너는 자화된 도전성 고무롤러(9)에 붙게되고, 상기 고무롤러(9)와 브러쉬(10)를 접촉 회전시키면서 브러쉬 마찰력으로 잔류토너를 제거한다.In the cleaning part, a bias voltage suitable for the characteristics of the magnetic toner is applied to the roller shaft of the conductive rubber roller 9 so that the remaining toner is attached to the magnetized conductive rubber roller 9, and the rubber roller 9 and the brush 10 ), Remove residual toner by brush friction while rotating contact.
이와같이 잔류토너가 제거된 감광드럼은 이레이즈 램프(erase lamp) (8)에 도달하여 백색광에 의하여 대전코로나(2) 이전의 초기상태로 돌아가게 된다.Thus, the photosensitive drum from which the residual toner is removed reaches an erasure lamp (8) and returns to the initial state before the charging corona (2) by white light.
이상과 같이 본 고안은 전자사진 프로세스의 추세에 따라 고유저항을 갖는 자성토너를 사용하여 도전성 마그네트 롤러 슬리이브에 바이어스 전압을 인가하지 않고 브러쉬로 슬리이브면을 마찰대전시켜 자성토너가 마이너스의 극성으로 감광드럼에 이송되게 하며, 도전성 고무롤러를 채용하여 종래 블레이드에 의해 발생되는 감광드럼의 회전구동부하를 없애도록 비접촉식 토너제거방식으로 개량하며 자성토너의 원활한 공급과 감광드럼의 사용수명을 배가 시킬 수 있는 장점이 있는 것이다.As described above, according to the trend of the electrophotographic process, the magnetic toner has a resistivity and frictionally charges the sleeve surface with a brush without applying a bias voltage to the conductive magnet roller sleeve. It is transferred to the photosensitive drum, and it is improved by the non-contact toner removal method to eliminate the rotational driving load of the photosensitive drum generated by the conventional blade by adopting the conductive rubber roller, and it can double the supply life of the magnetic toner and the service life of the photosensitive drum. There is an advantage.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880016296U KR940003874Y1 (en) | 1988-09-30 | 1988-09-30 | Developing apparatus of an electrophotographic process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880016296U KR940003874Y1 (en) | 1988-09-30 | 1988-09-30 | Developing apparatus of an electrophotographic process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR900007159U KR900007159U (en) | 1990-04-03 |
| KR940003874Y1 true KR940003874Y1 (en) | 1994-06-15 |
Family
ID=19279949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019880016296U KR940003874Y1 (en) | 1988-09-30 | 1988-09-30 | Developing apparatus of an electrophotographic process |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940003874Y1 (en) |
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1988
- 1988-09-30 KR KR2019880016296U patent/KR940003874Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR900007159U (en) | 1990-04-03 |
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