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Image forming device

An image and image-carrying technology, which is applied to the electric recording process using the charge pattern, the equipment for the electric recording process using the charge pattern, and the electric recording technique, which can solve the problem of toner image color shift, bending or wrinkling of the transfer material, To avoid problems such as rising costs, to ensure mutual parallelism and eliminate tolerance accumulation

Active Publication Date: 2008-12-31
RICOH KK
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] However, even with strict parallelism, problems such as bending or wrinkling of the transfer material or color shift in the toner image may occur due to various usage conditions of the user.
In recent years, image forming devices have been further required to be low-cost, and the adjustment of mutual parallelism in the manufacturing process, or strict requirements on the accuracy of each dimension have become the main reasons for cost increases.

Method used

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Embodiment Construction

[0111] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following embodiments, although various limitations are made to the constituent elements, types, combinations, shapes, relative arrangements, etc., these are merely examples, and the present invention is not intended to limited to this.

[0112] figure 1 It is an overall schematic configuration diagram of the internal mechanism of a tandem color printer as an example of an electrophotographic image forming apparatus.

[0113] Inside the printer main body 100, an image forming means 400 is provided. Image forming means 400 such as figure 2 As shown, it consists of four imaging units 500 of yellow (Y), cyan (C), magenta (M) and black (K), and an intermediate transfer unit 600 . Both units 500, 600 are configured to be removable. In the intermediate transfer unit 600 , an endless intermediate transfer belt 10 serving as an intermediate ...

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PUM

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Abstract

The present invention provides an image forming apparatus, which transfers image loading body such as toner image on a middle transfer belt (10) on a transfer material (P) by a transfer device (60), then leads the transfer material to get through a fixing device (40), and fixes unfixed toner on the transfer material on the transfer material by a fixing device. The transfer device can move freely at an operation position (A) and a retreat position, and a collision portion is formed on the transfer device, the collision portion is held on the operation position by collision with a positioning projecting portion (66) of the fixing device. Thereby not increasing cost, increasing the relative position accuracy of the transfer device and the fixing device, not being afraid of the transfer material to bend or cockle, and not being afraid of the toner to generate color bias.

Description

technical field [0001] The present invention relates to image forming devices such as copiers, printers, plotters, facsimile machines, and compound machines. Among them, in particular, it relates to an electrophotographic image forming apparatus which, for example, performs charging, writing, and development, forms a toner image on a photoreceptor, and transfers the toner image directly or indirectly through an intermediate transfer body through a transfer device, The transferred toner image is fixed in a fixing device, and the image is recorded on a transfer material such as paper. Background technique [0002] Image forming devices such as copiers, printers, and facsimiles record images including characters and symbols on transfer materials such as paper, cloth, and OHP films based on image information. There are various types of such image forming apparatuses. Among them, electrophotographic image forming apparatuses are capable of recording high-definition images at hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/16G03G15/20G03G15/01
Inventor 江原正尚吉永洋岩谷直毅山口嘉纪
Owner RICOH KK
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