Image forming apparatus

An image and latent image carrier technology, which is applied to the electrical recording process using the charge pattern, equipment and instruments for the electric recording process using the charge pattern, and can solve problems such as color deviation

Inactive Publication Date: 2008-01-16
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a tandem image forming apparatus of the intermediate transfer method, as in the tandem image forming apparatus of the direct transfer method, since the transfer positions of the monochromatic images on the intermediate transfer belt deviate from each other, When there is a color deviation that can be confirmed by the naked eye of the user

Method used

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Embodiment Construction

[0053] Hereinafter, an embodiment of the present invention applied to a tandem image forming apparatus of an intermediate transfer method will be described.

[0054] FIG. 1 is a schematic diagram showing the outline of main components of an image forming apparatus applicable to the present invention. Also, when the image forming apparatus is used as a copier or a printer, etc., in the main configuration shown in the figure, a paper feeding table for holding a large amount of paper, a scanning unit, a document Automatic Feeding Device (ADF).

[0055] As shown in FIG. 1 , the image forming apparatus of this embodiment is provided with an intermediate transfer belt 10 (surface moving member) constituted by an endless belt of an intermediate transfer body. The intermediate transfer belt 10 is stretched over four supporting rollers 7 , 8 , 11 , and 12 as supporting rotating bodies, and is driven to move in a counterclockwise rotation direction in the drawing. In the present embod...

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Abstract

An image forming apparatus including an image bearing member, an image forming device forming a latent image on the image bearing member and visualizing the latent image; a transfer device transferring the visual image onto a receiving material, using a moving member; a drive controller controlling driving of the image bearing member so that the rotation angular speed of the image bearing member is identical to the targeted rotation angular speed; a pattern detection device detecting pattern images formed on the moving member; and a correction device determining the variation in rotation angle or angular speed per one revolution of the image bearing member on the basis of the detection data and correcting the targeted rotation angular speed by superimposing a correction value to negate the variation in rotation angle or angular speed per one revolution of the image bearing member on the target.

Description

technical field [0001] The present invention relates to image forming devices such as copiers, facsimile machines, and printers. Background technique [0002] Patent Document 1: Japanese Unexamined Patent Publication No. 10-78734 [0003] In image forming apparatuses such as copiers, printers, and facsimiles, toner is applied to a latent image formed on a latent image carrier to visualize it, or the obtained toner image is transferred. The image is formed by transferring the toner image to the recording material, or transferring the toner image to the recording material through an intermediate transfer body. As such an image forming apparatus, it is known to obtain a color image by superimposing a plurality of monochrome images which are different from each other. In such a color image forming apparatus, in recent years, there has been an increasing demand for higher image quality and higher speed. In a color image forming apparatus corresponding to such a requirement, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00G03G15/16
CPCG03G15/0131G03G15/50G03G15/5058G03G2215/0161G03G2215/00059G03G2215/0132
Inventor 松田裕道
Owner RICOH KK
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