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Image forming device

An image and toner image technology, applied in the field of image forming devices, can solve problems such as inability to obtain effects

Active Publication Date: 2012-06-06
KONICA MINOLTA BUSINESS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the distribution of the occurrence sites of the flaws appearing on the surface of the roller or the belt is characteristic, and therefore, only by moving the above-mentioned roller or belt at a fixed pitch or at a constant speed in a direction perpendicular to the direction of travel of the paper, it can be changed. In the technical means of the contact area of ​​the side edge of the paper, there are cases where the desired effect cannot be obtained

Method used

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Examples

Experimental program
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Embodiment Construction

[0035] Hereinafter, examples of embodiments of the present invention will be described based on the drawings. In addition, the present invention is not limited to this example.

[0036] figure 1 is a schematic diagram of the image forming apparatus G. FIG.

[0037] The color image forming apparatus G illustrated in the figure is called a tandem type color image forming apparatus: a plurality of photoreceptors 31Y, 31M, 31C, and 31K are arranged in a column opposite to an intermediate transfer belt 41 to form a full-color image forming apparatus G. image.

[0038] This color image forming apparatus G has an automatic document feeder ADF at its upper portion.

[0039] The originals D placed on the original table 103 of the automatic document feeder ADF are separated one by one, sent out to the original conveyance path, and conveyed by the conveyance drum 108 .

[0040] The image of the document D being conveyed is read by the document reading unit 1 at the document image rea...

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PUM

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Abstract

Disclosed is an image forming device which can prevent occurrence of damage on the surface of a fixing roller or a fixing belt due to the contact of the end of a sheet with the fixing roller or fixing belt. The image forming device, for transferring a toner image to a sheet fed out from a sheet feed section and fixing the toner image to the sheet by pressing the sheet carrying the toner image at a fixing section, comprises a moving means for moving the sheet and or the fixing section in the direction at right angles to the traveling direction of the sheet within a preset moving range, the moving means being controlled based on a preset operation pattern.

Description

technical field [0001] The present invention relates to an image forming apparatus such as a copying machine and a printer having a fixing unit that fixes the image by applying pressure to paper carrying an unfixed toner image. Background technique [0002] In an image forming apparatus using electrophotography, image fixing processing on paper is often performed by pressurizing and heating paper carrying a toner image by means of a fixing unit having opposing rollers or belts. [0003] The roller or belt used in such a fixing unit is strongly pressed against the paper during the fixing process, so scratches are generated on the surface of the roller or belt, and the scratch may appear on an image on the paper. [0004] The above-mentioned flaws often occur in areas where the contact frequency between the surface of the roller or the belt and the ends on both sides of the paper in the paper feeding direction (hereinafter, simply referred to as the side ends) is high. Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/20
CPCG03G2221/1639G03G21/1685G03G15/2085G03G2215/00561G03G15/2028
Inventor 圆子雅巳奥井进
Owner KONICA MINOLTA BUSINESS TECH INC