Image forming apparatus and transfer belt

An imaging device, a secondary transfer technology, applied in the equipment, instruments, optics, etc. of the electrical recording process applying the charge pattern, which can solve the problems of mark degradation, mark damage, false detection, etc.

Inactive Publication Date: 2005-02-09
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, when markings are provided on the inner peripheral surface of the transfer belt as disclosed in this Japanese Patent Laid-Open No. 2002-3 1927, there is a possibility that due to a plurality of rollers for tensioning and hanging the transfer belt In contact with each other, marking degradation due to friction and wear may cause damage to the marking or false detection

Method used

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  • Image forming apparatus and transfer belt
  • Image forming apparatus and transfer belt
  • Image forming apparatus and transfer belt

Examples

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Embodiment Construction

[0020] Combine below Figure 1 to Figure 5 The first embodiment shown illustrates the invention in detail.

[0021] figure 1 is a schematic diagram for illustrating the entire image forming apparatus 1 such as a color printer related to the first embodiment of the present invention. The image forming apparatus 1 internally has a paper supply device 3 for supplying paper as a recording medium to the image forming section 2 . The paper feeding device 3 takes out the paper P from the paper cassettes 3 a and 3 b, and supplies the paper P to the registration roller 27 along the transport path 3 c. On top of the image forming apparatus 1, a scanner 4 for reading document images is provided.

[0022] Around the photosensitive drum 10 as an image carrier of the image forming portion 2 , a developing portion 11 for forming toner images of plural colors as a developed image on the photosensitive drum 10 is provided. In the developing section 11, there are main chargers 12 for sequen...

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PUM

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Abstract

In an image forming apparatus, rollers to stretch and suspend a transfer belt to which color images are transferred are equipped with small diameter portions and a marker is formed, the marker facing to the small diameter portions sequentially when the transfer belt runs.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from prior Japanese Patent Application No. 2003-189558 filed on July 1, 2003, the entire contents of which are hereby incorporated by reference. technical field [0003] The present application relates to an image forming apparatus and a transfer belt for forming a multi-color developed image on a recording medium using an intermediate transfer device. Background technique [0004] There are image forming apparatuses such as color copiers or color printers that obtain color images using an electrophotographic method. In such a device, in order to realize the miniaturization of the device, multiple times of primary transfer (primary transfer) (rotating the photoconductor several times, superimposing images of different toners of various colors formed on the endless transfer belt at each rotation) ) to obtain a full-color image. Thereafter, the full-color image is second...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G21/00G03G15/01G03G15/16
CPCG03G2215/0158G03G15/0131
Inventor 中富吉次
Owner KK TOSHIBA
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