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Image forming device

一种成像设备、构造成的技术，应用在应用电荷图形的电记录工艺的设备、仪器、光学等方向，能够解决不易设备尺寸减小等问题

Inactive Publication Date: 2012-07-11
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in recent years, color electrophotographic image forming apparatuses have been continuously required to be reduced in size, and as the size of the apparatus is reduced, the size of the apparatus with respect to the thrust direction is also reduced, so that when securing a sufficient clearance as described above, there is a problem that it is not easy to realize the Problems with reduced size

Method used

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Examples

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no. 1 example

[0015] [Color electrophotographic imaging device]

[0016] A color electrophotographic image forming apparatus according to a first embodiment will be described below. Here, as a color electrophotographic image forming apparatus including a plurality of developing devices, a color laser beam printer including four developing devices is shown. figure 1 is a schematic diagram of a color laser beam printer.

[0017] First, the schematic structure and image forming operation of the color laser beam printer are described.

[0018] Such as figure 1 As shown, the image forming apparatus A includes a drum-shaped electrophotographic photosensitive member (image bearing member) (hereinafter referred to as a photosensitive drum) 2 . Around the photosensitive drum 2, a charging roller 3, an exposure device 4, four developing devices 18a-18d, and a cleaning device 6 are arranged. The charging roller 3 is a charging means for uniformly charging the photosensitive drum 2 . The exposure ...

no. 2 example

[0045] A color laser beam printer according to a second embodiment will be described below. Figure 7 is a schematic diagram of the color laser beam printer according to the second embodiment from which the rotating structural part is taken out and can be compared with that of the first embodiment image 3 compared views. In this embodiment, compared with the first embodiment described above, a left column (third rotatable member) 131L and a right column (fourth rotatable member) 131R are added, thereby providing The member between the rotatable support members.

[0046] The left column 131L and the right column 131R are sandwiched between two disks, ie, the left disk 102L and the right disk 102R constituting the rotating structure 102, and are sandwich members movable to one side and the other side with respect to the thrust direction. The left post 131L is detachably joined to the left pan 102L, and the right post 131R is detachably joined to the right pan 102R. Further, ...

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Abstract

An image forming device comprises an image carrier on which an electrostatic image is formed, a rotary which is configured to support a developing device for developing the electrostatic image and rotationally move the developing device to a developing position and is provided to be movable in a rotation axis direction with respect to the body of the device, a pressing member which presses the rotary in the rotation axis direction, and a restriction unit which restricts the position in the rotation axis direction of the rotary pressed by the pressing member.

Description

technical field [0001] The present invention relates to an image forming apparatus using a rotatable support member (rotary structure) that supports a plurality of developing devices. Background technique [0002] A color electrophotographic image forming apparatus using a rotatable support member (rotary structure) that supports a plurality of developing devices is generally known. In the image forming apparatus, by rotating the rotatable support member, any one of the plurality of developing devices supported by the rotatable support member is sequentially moved to a developing position where the rotatable support member is opposed to the photosensitive drum. The developing device moved to the developing position is engaged with power supply means and drive transmission means provided in the apparatus main assembly (of the image forming apparatus), thereby realizing power supply and driving force transmission (for example, Japanese Laid-Open Patent Application No. 2008-310...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/01G03G21/16
CPCG03G15/0173
Inventor 青木大介立石朋也
Owner CANON KK