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Development cartridge and electrophotographic image forming apparatus using the same

一种成像装置、显影盒的技术，应用在应用电荷图形的电记录工艺、应用电荷图形的电记录工艺的设备、电记录术等方向，能够解决降低图像质量、感光体损坏、显影辊隙改变等问题

Active Publication Date: 2017-06-30
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When a long time elapses after the developing nip is formed, the developing roller may be deformed and the photoreceptor may be damaged
Deformation of the developing roller and damage to the photoreceptor lead to changes in the developing nip, which degrades image quality

Method used

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  • Development cartridge and electrophotographic image forming apparatus using the same
  • Development cartridge and electrophotographic image forming apparatus using the same
  • Development cartridge and electrophotographic image forming apparatus using the same

Examples

Experimental program
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Embodiment Construction

[0040] Reference will now be made in detail to example embodiments illustrated in the drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described below in order to explain the present disclosure by referring to the figures.

[0041] The present disclosure will be described in detail by explaining embodiments of an electrophotographic image forming apparatus and a developing cartridge with reference to the accompanying drawings. Throughout the specification and drawings, those elements that perform substantially the same function are given the same reference numerals, and repeated explanations thereof are omitted. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Expressions such as "at least one of", when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.

[0042] figure 1 is a schematic configur...

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PUM

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Abstract

A development cartridge attachable to and detachable from a main body of an image forming apparatus includes a photosensitive unit including a photosensitive drum, a developing unit including a developing roller and rotatably coupled to the photosensitive unit with respect to a hinge axis, a driving gear configured to rotate in a first direction for a printing operation or a second direction opposite the first direction, a driving member positioned coaxially with the driving gear and configured to be rotated by the driving gear, a first one-way clutch configured to connect the driving member with the driving gear only when the driving gear rotates in the second direction, and a first moving member configured to be connected to the driving member so as to reciprocate between a first location where a development nip is formed and a second location where the development nip is released.

Description

technical field [0001] The present disclosure relates to an electrophotographic image forming device that electrophotographically forms an image on a recording medium, and a developing cartridge detachably attachable to the electrophotographic image forming device. Background technique [0002] An electrophotographic image forming apparatus operating in an electrophotographic manner prints an image on a recording medium by forming a visible toner image on a photoreceptor by supplying toner to an electrostatic latent image formed on the photoreceptor. The toner image is transferred to the recording medium and the transferred toner image is fixed to the recording medium. [0003] The developer cartridge is an assembly of elements used to form a visible toner image. The developing cartridge is detachably attached to the main body of the image forming apparatus, and is a consumable item to be replaced when its service life ends. In a developing cartridge utilizing a contact de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G21/18G03G21/16G03G15/08
CPCG03G15/087G03G21/1676G03G21/1857G03G21/186G03G15/757G03G2221/1657G03G15/0865
Inventor 郑泰日金圣大金泰熙吴必胜
Owner HEWLETT PACKARD DEV CO LP