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Heated rotary drum and image forming device using said heated rotary drum

A technology for heating rollers and images, which is applied to the electric recording process using charge patterns, the equipment, shafts and bearings of the electric recording process applying charge patterns, etc. performance, reduced wear, improved deflection and sag resistance

Inactive Publication Date: 2006-05-03
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor lubricating performance in the initial use, the initial wear is large

Method used

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  • Heated rotary drum and image forming device using said heated rotary drum
  • Heated rotary drum and image forming device using said heated rotary drum
  • Heated rotary drum and image forming device using said heated rotary drum

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] Embodiments of the present invention will be described below.

[0014] Figure 5 It is an overall explanatory diagram showing the image forming apparatus 100 to which the present invention is applied. Image forming apparatus 100 supplies static electricity from electrostatic roller 104 to photosensitive drum 102 to charge the photosensitive drum, and forms a latent image on photosensitive drum 102 by irradiating light such as laser light from exposure light unit 106 . The powder is supplied from the developing roller 110 of the developing device 18 to develop an image on the photosensitive drum 102 . The paper supplied through the paper supply path 128 passes between the photosensitive drum 102 and the transfer roller 112 to transfer an image onto the paper, and then the fixing roller 114 fixes the image on the paper. Paper is drawn from the paper cassette 120 through a paper supply path and advances over supply rollers 122,124. After being positioned on the registra...

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Abstract

An object of the present invention is to enhance the flexibility and dent resistance of the contact surface between the thin-walled heating roller and the bearing of an image forming apparatus and to reduce the initial wear of the bearing. The technical solution is to form a circumferential groove (12) with an arc-shaped cross-section with a radius of 1-3 mm on the contact surface of the fixing roller (10) and the bearing (20) by deep-drawing the barrel metal, and the circumferential groove (12) also serves as the bearing. Lubricant retaining part during initial assembly.

Description

technical field [0001] The present invention relates to a heating roller and an image forming apparatus using the heating roller, and particularly relates to a structure of a support portion of the heating roller. Background technique [0002] The fixing device of the image forming apparatus is composed of a heating roller and a pressing roller, and is used to fix unfixed toner on the paper. For this fixing device, the heating roller is set to shorten the warm-up time when starting to work. The wall thickness of the cylinder should be as thin as possible. In the process of antirust treatment on the surface of the heating roller, the bottom layer is first coated, and then a fluororesin tube with a thickness of about 20 μm is put on it, and then the fluororesin tube is tightly adhered to the outer circumference of the cylinder through firing. Recently, in accordance with the above-mentioned thinning requirements, the wall thickness of the cylinder of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/20F16C13/00F16C13/02
CPCG03G15/2053G03G2215/20
Inventor 押田英夫田中康树实方启二难波仁之
Owner FUJIFILM BUSINESS INNOVATION CORP
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