Process-box, electronic photosensitive drum, electronography device and color electronography device

A technology of electrophotography and imaging device, which is applied in the direction of electric recording process applying charge pattern, equipment of electric recording process applying charge pattern, optics, etc., and can solve the problem of longer imaging time and the like

Inactive Publication Date: 2005-10-12
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phase detection and control require a certain length of time
Therefore, if these operations are performed frequently, the imaging time will become longer

Method used

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  • Process-box, electronic photosensitive drum, electronography device and color electronography device
  • Process-box, electronic photosensitive drum, electronography device and color electronography device
  • Process-box, electronic photosensitive drum, electronography device and color electronography device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Description of a preferred embodiment (general arrangement of a color (full-color) electrophotographic image forming apparatus):

[0039] A color electrophotographic image forming device is described as an example of an electrophotographic image forming device according to an embodiment of the present invention.

[0040] refer to figure 1 , the general arrangement of a color (full-color) electrophotographic image forming apparatus will be described. figure 1 is a longitudinal sectional view showing the general arrangement of a full-color laser printer as an example of a color (full-color) electrophotographic image forming apparatus. The main part of a color (full-color) electrophotographic image forming apparatus (main part of a full-color laser printer) is provided with four mounting portions 100 (100a-100d), which are arranged side by side or along a vertical direction. The process cartridges 7 (7a-7d) are detachably mounted to the mounting portion 100, respective...

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PUM

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Abstract

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus for forming an image on a recording material, the apparatus including a motor, a driving rotatable member for transmitting a driving force from the motor, and a twisted recess provided at a central portion of the driving rotatable member and having a non-circular cross-section with a plurality of corners, the recess being rotatable integrally with the driving rotatable member, the process cartridge includes an electrophotographic photosensitive drum; process means actable on the drum; a twisted projection having a non-circular cross-section with a plurality of corners, the twisted projection being provided at one longitudinal end of the electrophotographic photosensitive drum and being engageable with the recess; a permitting portion for permitting engagement between the twisted protection and the recess only at a predetermined relative rotational position therebetween to establish the engagement therebetween with the predetermined relative to rotational position; wherein when the process cartridge is mounted to the main assembly of the apparatus, the rotating force is transmitted from the driving rotatable member to the electrophotographic photosensitive drum by rotation of the driving rotatable member with the twisted projection being in engagement with the recess.

Description

technical field [0001] The present invention relates to an electrophotographic image forming apparatus, a color electrophotographic image forming apparatus, a process cartridge detachably mounted to the above electrophotographic image forming apparatus, and an electrophotographic photosensitive drum. Here, the electrophotographic image forming device is a device that forms an image on a recording material by an electrophotographic method. The electrophotographic image forming apparatus may be an electrophotographic copier, an electrophotographic printer (LED printer, a laser printer or the like), an electrophotographic printer type facsimile machine, an electrophotographic printer type word processor or the like. Background technique [0002] The process cartridge includes an electrophotographic photosensitive drum and processing means such as a charging member, developing member or cleaning member as a cartridge unit, which is detachably mounted to the main body part of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/01F16D1/10G03G15/00G03G21/00G03G21/18
CPCG03G2221/183G03G2221/1657G03G15/757G03G21/186F16D1/101G03G21/18
Inventor 横森干词有光健
Owner CANON KK
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