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Electrophotographic image forming apparatus

一种电子照相、成像装置的技术，应用在电记录术、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等方向，能够解决碰撞等问题

Inactive Publication Date: 2011-05-11
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the rotating body is swingably supported by the main assembly of the device, and therefore, shocks during transportation can cause collisions with other parts in the main assembly of the device

Method used

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  • Electrophotographic image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] (General layout of electrophotographic image forming apparatus)

[0019] refer to Figure 1A , Figure 1B , Figure 2A and Figure 2B , to describe the structure and image forming operation of the electrophotographic image forming apparatus 100 according to the embodiment of the present invention. The device 100 is a laser beam printer that uses an electrophotographic method and is capable of forming full-color images (four colors). It is performed on a recording material 40 in the form of a sheet in response to an electrical image signal input to a control circuit portion (not shown) from a host device (not shown) such as a personal computer, an image reader, or another facsimile machine. Color imaging operation. The recording material 40 is a recording material, a sheet, an OHT sheet, a label, or the like. The control circuit part (control means: CPU) supplies and receives various electric information between the host device and the operation part (not shown), an...

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PUM

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Abstract

An electrophotographic image forming apparatus for forming an image on a recording material, includes a drum cartridge including an image bearing drum and charger for charging a surface of the drum, the drum cartridge being demountably mounted to a main assembly of the apparatus; a rotary supporting a plurality of developing devices each having a developer carrying member for developing an electrostatic latent image formed on the drum, the rotary being swingably mounted to the main assembly through a supporting member and being rotatable, relative to the supporting member, to bring the developing device to a developing position for developing the latent image; an urging member for urging the drum cartridge to the main assembly to position it in place; and a locking member for spacing between the developing device positioned in the developing position and the image bearing member, the locking member being demountably mounted between the drum cartridge and the rotary, and the locking member being is effective to prevent the urging member from moving from a position urging the drum cartridge to the main assembly.

Description

technical field [0001] The present invention relates to an electrophotographic image forming apparatus including a drum cartridge, a plurality of developing devices, and a rotating body (rotatable movement mechanism) including a plurality of mounting portions capable of carrying the developing devices. The present invention is particularly suitable for a color electrophotographic image forming apparatus for forming a color image on a recording material. Here, the electrophotographic image forming apparatus forms an image on a recording material using an electrophotographic image forming method. For example, it includes electrophotographic copiers, electrophotographic printers (LED printers, laser beam printers, etc.), electrophotographic printer-type facsimile machines, electrophotographic printer-type word processors, and the like. The developing cartridge is a case including, as a unit, a developer carrying member for developing an electrostatic latent image formed on the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00G03G21/16
CPCG03G2221/1606G03G2221/163G03G21/1676
Inventor 沼田哲哉樱井宏美辻宽治
Owner CANON KK
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