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image forming device

A technology of image and closing position, which is applied to the electrical recording technology using charge graphics, the equipment of electrical recording technology using charge graphics, and electrical recording technology, etc. It can solve the problems of friction and wear of shafts and holes, and reduce positioning accuracy.

Active Publication Date: 2011-12-14
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, rough handling of the image forming unit with repeated detachment and attachment causes frictional wear of the shaft and the hole, thereby reducing positioning accuracy

Method used

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Examples

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Embodiment Construction

[0024] Next, we will refer to Figure 1(A) to 7(B) A laser printer is described as an image forming apparatus according to one embodiment of the present invention. The laser printer 100 includes a main frame 200 and an image forming system 300 . The main frame 200 is formed substantially in a box shape. An outer cover (not shown) formed of resin is formed over the outer surface of the main frame 200 . The image forming system 300 includes an image forming unit 350 that can be pulled out from the main frame 200 and detachably mounted on the main frame 200 .

[0025] The image forming system 300 includes a belt unit 310 (conveyor unit), a scanning device 330, a fixing unit 340, and an image forming unit 350 including four process units 320 and a drum sub-unit 351 ( Figure 2(A) and 2(B) ). The belt unit 310 includes a driving roller 311 , a driven roller 312 , an endless transfer belt (transfer belt) 313 extending around the driving roller 311 and the driven roller 312 , an...

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PUM

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Abstract

An image forming device having a frame (200), a door (400), and a movable image forming unit (350) to be assembled in the frame when the door is open. The image forming unit has a support shaft (352), and frame has a hole (211) on which the support shaft abuts for positioning of the image forming unit relative to the frame when the door is closed. A lock unit (500) formed with a recessed portion is movable in association with the movement of the door. When the door is open, the lock unit is at its abutment position so that the support shaft abuts the recessed portion. When the door is closed the lock unit is moved so that the support shaft is brought into abutment with the hole.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2008-160742 filed on June 19, 2008. The entire content of this prior application is hereby incorporated by reference. technical field [0003] The present invention relates to an image forming apparatus having an image forming system for forming an image on a recording medium. More specifically, the present invention relates to an image forming apparatus having an image forming unit detachably supported by a frame, the image forming unit being a main part of the image forming system. Background technique [0004] In a conventional image forming apparatus, an image forming system is supported to a frame, and an image forming unit that is a part of the image forming system is detachably mounted on the frame. For example, for a tandem color laser printer having four developing cartridges corresponding to each of black, yellow, magenta, and cyan, it ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/00G03G21/16G03G15/01
CPCG03G2221/1684G03G2221/1654G03G21/1647G03G21/1638G03G2221/169G03G21/1853
Inventor 户松义也
Owner BROTHER KOGYO KK