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Developing cartridge

A technology for developing cartridges and developing rollers, which is applied in the field of developing cartridges and can solve problems such as toner leakage

Active Publication Date: 2021-02-26
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the coupling gear is rotated forward and backward, the developing roller fastened to the coupling gear is also rotated forward and reverse together, so there is a concern that the toner may leak out of the process unit.

Method used

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  • Developing cartridge
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0101] Next, for embodiments of the present invention, while referring to appropriate appended Figure 1 side in detail.

[0102] Such as figure 1 As shown, the process cartridge PC includes a developer cartridge 1 and a developer cartridge 2 .

[0103] The developing cartridge 1 includes a frame body 11 , a developing roller 12 , a supply roller 13 , a layer thickness regulating blade 14 , and an agitator 15 . The housing 11 accommodates developer therein. The frame body 11 supports the layer thickness regulating blade 14 , and rotatably supports the developing roller 12 , the supply roller 13 , and the agitator 15 .

[0104] The developing roller 12 is a roller that supplies a developer to an electrostatic latent image formed on a photoreceptor (not shown). The developing roller 12 is rotatable around an axis extending in the axial direction.

[0105] The supply roller 13 is a roller that supplies the developer in the housing 11 to the developing roller 12 . The layer ...

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PUM

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Abstract

The present invention provides a developing cartridge (1) for driving a movable gear disposed on the developing cartridge by using a driving force of a coupling, which comprises: a developing roller (12) capable of rotating around an axis extending in the axial direction; The coupling (CP) can rotate around the axis along the axial direction; the first gear (G1) can rotate around the first axis (X1 ) as the center rotation; the second gear (G2) can rotate around the second axis extending in the axial direction, and can be at the first position with the first axis (X1) as the center relative to the first gear (G1) and the second position; and the cam (31), which moves the second gear (G2) to the first position and the second position, and can be extended in the axial direction by receiving the driving force from the coupling (CP) The third axis is the center of rotation.

Description

technical field [0001] The present invention relates to a developing cartridge provided with a developing roller. Background technique [0002] Conventionally, an image forming apparatus is known (refer to Patent Document 1) that includes a developing chamber having a developing sleeve and a buffer that accommodates a developer for supply to the developing chamber. The buffer unit includes a stirring member. The stirring member rotates to supply the developer to the developing chamber. The buffer has a stirring gear for rotating the stirring member. The stirring gear is rotated by inputting driving force from the driving unit. The swing gear of the drive unit is configured to be able to come into contact with and separate from the agitation gear of the buffer portion by forward and reverse rotation of the gear in the drive unit. [0003] In addition, there is known a processing unit (see Patent Document 2) that includes a processing frame that includes a developing unit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G21/18
CPCG03G15/0808G03G15/0889G03G15/0891G03G21/1857G03G15/0806G03G2221/1657G03G21/1647G03G15/0896G03G15/0865
Inventor 清水圭太山本智也
Owner BROTHER KOGYO KK