JP2003280370A5 - - Google Patents
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- JP2003280370A5 JP2003280370A5 JP2002079487A JP2002079487A JP2003280370A5 JP 2003280370 A5 JP2003280370 A5 JP 2003280370A5 JP 2002079487 A JP2002079487 A JP 2002079487A JP 2002079487 A JP2002079487 A JP 2002079487A JP 2003280370 A5 JP2003280370 A5 JP 2003280370A5
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Claims (12)
前記現像ユニットが前記現像位置に位置した状態にて、
前記シール部材が、前記現像剤担持体の上方から該現像剤担持体に当接しており、
前記現像剤供給部材の最上部が前記シール部材の下端よりも上に位置していることを特徴とする現像ユニット。A developer container for accommodating the developer, a developer carrier for carrying and transporting the developer contained in the developer container , and supplying the developer to the developer carrier A developer supply member and a seal member for preventing leakage of the developer from the developer accommodating portion, and is mounted on a rotating body having a plurality of unit mounting portions and rotated by the rotating body. In the developing unit for developing the latent image formed on the photosensitive member at the developing position,
With the developing unit positioned at the developing position,
The seal member is in contact with the developer carrier from above the developer carrier;
The developing unit, wherein an uppermost portion of the developer supply member is positioned above a lower end of the seal member.
前記現像ユニットが前記現像位置に位置した状態にて、
前記シール部材が、前記現像剤担持体の上方から該現像剤担持体に当接部にて当接しており、
前記現像剤供給部材の最上部が、前記当接部の下端よりも上に位置していることを特徴とする現像装置。The developing unit according to claim 1,
With the developing unit positioned at the developing position,
The seal member is in contact with the developer carrier from above the developer carrier at a contact portion;
A developing device, wherein an uppermost portion of the developer supply member is positioned above a lower end of the contact portion.
前記現像剤供給部材としての現像剤供給ローラの直径は、前記現像剤担持体としての現像ローラの直径よりも大きいことを特徴とする現像ユニット。In the developing unit according to claim 1 or 2,
2. A developing unit, wherein a diameter of a developer supply roller as the developer supply member is larger than a diameter of a development roller as the developer carrier.
前記現像ユニットが前記現像位置に位置した状態にて、
前記現像剤担持体の下方から該現像剤担持体の下部に当接し、前記現像剤担持体に担持された現像剤の層厚を規制する層厚規制部材を有し、
前記現像剤供給部材の最下部が、前記現像剤担持体と前記層厚規制部材との当接部の上端よりも下に位置していることを特徴とする現像ユニット。The developing unit according to any one of claims 1 to 3,
With the developing unit positioned at the developing position,
A layer thickness regulating member that contacts the lower part of the developer carrier from below the developer carrier and regulates the layer thickness of the developer carried on the developer carrier;
The developing unit, wherein a lowermost portion of the developer supply member is positioned below an upper end of a contact portion between the developer carrier and the layer thickness regulating member.
前記ユニット装着部に装着された際に、前記現像剤供給部材は、前記現像剤担持体よりも前記回転体の回転中心側に位置することを特徴とする現像ユニット。The development unit according to claim 1,
The developing unit, wherein when mounted on the unit mounting portion, the developer supplying member is positioned closer to the rotation center of the rotating body than the developer carrying body.
前記現像ユニットが前記現像位置に位置した状態にて、
上方から、前記現像剤担持体と前記シール部材との当接部の上端を越えた位置まで至る壁部であって、前記シール部材よりも前記現像剤収容部側に配置された壁部を有することを特徴とする現像ユニット。The developing unit according to any one of claims 1 to 5,
With the developing unit positioned at the developing position,
A wall portion extending from above to a position beyond the upper end of the contact portion between the developer carrier and the seal member, the wall portion being disposed closer to the developer accommodating portion than the seal member. A developing unit characterized by that.
前記現像ユニットが前記現像位置に位置した状態にて、
前記壁部は前記現像剤供給部材の上方に設けられており、前記壁部の下端は、前記現像剤担持体の最上部と前記現像剤供給部材の最上部を結ぶ線よりも下方に位置することを特徴とする現像ユニット。The developing unit according to claim 6, wherein
With the developing unit positioned at the developing position,
The wall portion is provided above the developer supply member, and a lower end of the wall portion is positioned below a line connecting the uppermost portion of the developer carrier and the uppermost portion of the developer supply member. A developing unit characterized by that.
前記壁部の下端と前記現像剤供給部材との間には隙間が存在することを特徴とする現像ユニット。In the developing unit according to claim 6 or 7,
A developing unit, wherein a gap exists between a lower end of the wall portion and the developer supply member.
前記現像ユニットが前記現像位置に位置した状態にて、
前記シール部材が、前記現像剤担持体の上方から当接部にて該現像剤担持体に当接しており、
前記現像剤供給部材の最上部が前記シール部材の下端よりも上に位置しており、
前記現像剤供給部材の最上部が、前記当接部の下端よりも上に位置しており、
前記現像剤供給部材としての現像剤供給ローラの直径は、前記現像剤担持体としての現像ローラの直径よりも大きく、
前記現像剤担持体の下方から該現像剤担持体の下部に当接し、前記現像剤担持体に担持された現像剤の層厚を規制する層厚規制部材を有し、
前記現像剤供給部材の最下部が、前記現像剤担持体と前記層厚規制部材との当接部の上端よりも下に位置しており、
前記現像剤供給部材は、前記現像剤担持体よりも前記回転体の回転中心側に位置しており、
上方から、前記現像剤担持体と前記シール部材との当接部の上端を越えた位置まで至る壁部であって、前記シール部材よりも前記現像剤収容部側に配置された壁部を有し、
前記壁部は前記現像剤供給部材の上方に設けられており、前記壁部の下端は、前記現像剤担持体の最上部と前記現像剤供給部材の最上部を結ぶ線よりも下方に位置し、
前記壁部の下端と前記現像剤供給部材との間には隙間が存在する、ことを特徴とする現像ユニット。A developer container for accommodating the developer, a developer carrier for carrying and transporting the developer contained in the developer container, and for supplying the developer to the developer carrier A developer supplying member and a seal member for preventing leakage of the developer from the developer accommodating portion, and mounted on a rotating body having a plurality of unit mounting portions and rotated by the rotating body for development In the developing unit for developing the latent image formed on the photoconductor at the position,
With the developing unit positioned at the developing position,
The seal member is in contact with the developer carrier at the contact portion from above the developer carrier;
The uppermost part of the developer supply member is located above the lower end of the seal member;
The uppermost part of the developer supply member is located above the lower end of the contact part,
The diameter of the developer supply roller as the developer supply member is larger than the diameter of the development roller as the developer carrier,
A layer thickness regulating member that contacts the lower part of the developer carrier from below the developer carrier and regulates the layer thickness of the developer carried on the developer carrier;
The lowermost portion of the developer supply member is located below the upper end of the contact portion between the developer carrier and the layer thickness regulating member;
The developer supply member is positioned closer to the rotation center of the rotating body than the developer carrier;
A wall portion extending from above to a position beyond the upper end of the contact portion between the developer carrying member and the seal member, and has a wall portion disposed closer to the developer accommodating portion than the seal member. And
The wall portion is provided above the developer supply member, and a lower end of the wall portion is positioned below a line connecting the uppermost portion of the developer carrier and the uppermost portion of the developer supply member. ,
A developing unit, wherein a gap exists between a lower end of the wall portion and the developer supply member.
前記現像ユニットが前記現像位置に位置した状態にて、
前記層厚規制部材が、前記現像剤担持体の上方から該現像剤担持体に当接しており、
前記現像剤供給部材の最上部が前記層厚規制部材の下端よりも上に位置していることを特徴とする現像ユニット。A developer container for accommodating the developer, a developer carrier for carrying and transporting the developer contained in the developer container , and supplying the developer to the developer carrier A developer supply member, and a layer thickness regulating member for regulating the layer thickness of the developer carried on the developer carrier, and is mounted on a rotating body having a plurality of unit mounting portions, In the developing unit for developing the latent image formed on the photoconductor at the development position rotated,
With the developing unit positioned at the developing position,
The layer thickness regulating member is in contact with the developer carrier from above the developer carrier;
The developing unit, wherein an uppermost portion of the developer supply member is positioned above a lower end of the layer thickness regulating member.
前記現像ユニットが前記現像位置に位置した状態にて、
前記シール部材が、前記現像剤担持体の上方から該現像剤担持体に当接しており、
前記現像剤供給部材の最上部が前記シール部材の下端よりも上に位置していることを特徴とする現像ユニットを有する画像形成装置。A developer container for accommodating the developer, a developer carrier for carrying and transporting the developer contained in the developer container , and supplying the developer to the developer carrier A developer supply member and a seal member for preventing leakage of the developer from the developer accommodating portion, and is mounted on a rotating body having a plurality of unit mounting portions and rotated by the rotating body. In the developing unit for developing the latent image formed on the photosensitive member at the developing position,
With the developing unit positioned at the developing position,
The seal member is in contact with the developer carrier from above the developer carrier;
An image forming apparatus having a developing unit, wherein an uppermost portion of the developer supply member is positioned above a lower end of the seal member.
前記現像ユニットが前記現像位置に位置した状態にて、
前記シール部材が、前記現像剤担持体の上方から該現像剤担持体に当接しており、
前記現像剤供給部材の最上部が前記シール部材の下端よりも上に位置していることを特徴とする現像ユニットを有する画像形成装置、を具備することを特徴とするコンピュータシステム。A computer main body, a display device connectable to the computer main body, and an image forming apparatus connectable to the computer main body, a developer accommodating portion for accommodating a developer, and a development accommodated in the developer accommodating portion A developer carrying member for carrying and transporting the developer, a developer supplying member for supplying the developer to the developer carrying member, and preventing leakage of the developer from the developer containing portion. A developing unit that has a seal member and is mounted on a rotating body having a plurality of unit mounting portions and is rotated by the rotating body and develops a latent image formed on the photoconductor at a developing position;
With the developing unit positioned at the developing position,
The seal member is in contact with the developer carrier from above the developer carrier;
A computer system comprising: an image forming apparatus having a developing unit, wherein an uppermost portion of the developer supply member is positioned above a lower end of the seal member.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002079487A JP4103419B2 (en) | 2002-03-20 | 2002-03-20 | Developing unit, image forming apparatus, and computer system |
| EP03005349A EP1345089A1 (en) | 2002-03-13 | 2003-03-12 | Developing unit and developing device for an image-forming apparatus |
| CNB031312373A CN100356275C (en) | 2002-03-13 | 2003-03-13 | Developing unit, developing device for image-forming apparatus |
| CNU032512147U CN2687720Y (en) | 2002-03-13 | 2003-03-13 | Developing unit, developing device, image-forming apparatus and computer system |
| US10/387,219 US6868247B2 (en) | 2002-03-13 | 2003-03-13 | Developing unit, developing device, image-forming apparatus, and computer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002079487A JP4103419B2 (en) | 2002-03-20 | 2002-03-20 | Developing unit, image forming apparatus, and computer system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2003280370A JP2003280370A (en) | 2003-10-02 |
| JP2003280370A5 true JP2003280370A5 (en) | 2005-09-02 |
| JP4103419B2 JP4103419B2 (en) | 2008-06-18 |
Family
ID=29228944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002079487A Expired - Fee Related JP4103419B2 (en) | 2002-03-13 | 2002-03-20 | Developing unit, image forming apparatus, and computer system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4103419B2 (en) |
-
2002
- 2002-03-20 JP JP2002079487A patent/JP4103419B2/en not_active Expired - Fee Related
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