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Developing cartridge

A developing cartridge and developing roller technology, applied in the field of developing cartridges, can solve problems such as failure of image formation, and achieve the effect of smooth formation

Active Publication Date: 2020-05-12
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, image formation immediately after the image forming operation starts may fail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 2 approach

[0211] (1-1) Detailed structure of the developing cartridge according to the second embodiment

[0212] In the first embodiment, the developing cartridge 1 includes the toner storage chamber 5 and the developing chamber 7 in the developing frame 31 .

[0213] On the other hand, in the developing cartridge 1 according to the second embodiment, as Figure 8A , 8B As shown, the developing chamber 7 also serves as the toner containing chamber 5 in the developing frame 31 .

[0214] That is, in the second embodiment, the developing cartridge 1 does not include the agitator 6 . In addition, the front wall 34 is located on the front side of the developing coupling 71 in the front-rear direction.

[0215] In the developing cartridge 1 , the developing chamber 7 is defined by a front wall 34 , a pair of side walls 32 , a bottom wall 33 and an upper wall 35 .

[0216] In the toner filling operation, when toner is filled through the filling port 46, the developing chamber 7 is filled...

no. 3 approach

[0222] (2-1) Detailed structure of the developing cartridge according to the third embodiment

[0223] In the first embodiment, the filling port 46 overlaps the developing coupling 71 when projected in the left-right direction.

[0224] On the other hand, in the third embodiment, as Figure 10B As shown, a part of the filling port 100 is located outside the projected area of ​​the developing coupling 71 when projected in the left-right direction.

[0225] That is, in the third embodiment, similarly to the second embodiment, the developing chamber 7 is also used as the toner containing chamber 5 in the developing frame 31 . In addition, if Figure 9 As shown, the developer cartridge 1 includes a fill port 100 instead of the fill port 46 .

[0226] Fill port 100 is located on the front wall of left side wall 32A. The filling port 100 has a substantially polygonal shape in a side view, and penetrates the left side wall 32A in the left-right direction.

[0227] The left side ...

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Abstract

The present invention provides a developing cartridge including: a casing; a developing roller rotatable about a rotation axis extending in a first direction; a developing gear supported by an end portion of the developing roller; and a driving force receiving member capable of Rotating around a rotation axis extending in the first direction by receiving a driving force from the image forming apparatus body, including a gear portion meshing with the developing gear, the housing has a At least a part of the driving force receiving member overlaps with an opening of the housing when viewed in the first direction.

Description

technical field [0001] The present invention relates to a developing cartridge mounted to an electrophotographic image forming apparatus. Background technique [0002] Conventionally, there is known a process cartridge which is mounted on an image forming apparatus employing an electrophotographic method. The process cartridge is mounted to the image forming apparatus in a state where its inside is filled with toner. [0003] As the above-mentioned process cartridge, there is known a process cartridge including a cartridge frame in which a toner developing frame and a cleaning frame are incorporated. The process cartridge includes developing means such as a photosensitive drum and a developing roller in a cartridge frame. In the cartridge frame, the toner developing frame includes a toner containing portion and a toner filling port. In the process cartridge, the toner accommodating portion is filled with toner through the toner filling port. The process cartridge in this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08
CPCG03G15/0865G03G15/0896G03G2221/1657G03G21/1647
Inventor 板桥奈绪
Owner BROTHER KOGYO KK
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