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Fixing device and image forming device

A fixing belt and unfixed technology, applied in the direction of electric heating device, electric recording process using charge pattern, equipment for electric recording process using charge pattern, etc., can solve problems such as incorrect temperature control, poor fixing, and inability to detect temperature , to achieve the effect of temperature management, prevention of wear and proper temperature management

Inactive Publication Date: 2004-10-13
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the contact state between the temperature detection part and the belt side is unstable, the correct temperature cannot be detected, and the temperature control of the belt is incorrect.
If the temperature of the belt is not controlled correctly, heat cannot be properly supplied to the unfixed image, and poor fixing will occur.

Method used

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  • Fixing device and image forming device
  • Fixing device and image forming device
  • Fixing device and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0063] figure 1 is a schematic diagram illustrating an example of an image forming apparatus to which a fixing device according to an embodiment of the present invention is applied, figure 1 The shown image forming apparatus can be used for a copier or a printer capable of forming full-color images. The image forming apparatus also includes a facsimile apparatus capable of performing image forming processing similar to that of the above-mentioned copier and printer based on a received image signal. Of course, the image forming apparatus is not limited to color images, but also includes monochrome images.

[0064] figure 1 The image forming apparatus 20 shown sequentially transfers the images of the separated colors onto the same intermediate transfer body, and then transfers the superimposed image on the intermediate transfer body to a sheet-like reco...

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Abstract

This invention relates to a fixing device and an image forming device. A fixing device includes a heating roller with heat resource, a fixing roller, an endless fixing belt extended around at least the heating roller and the fixing roller and configured to be heated by the heating roller, a pressing roller disposed opposite to the fixing roller via the fixing belt, a temperature detecting member configured to detect a surface temperature of the heating roller, and a control device configured to control a surface temperature of the fixing belt based on a surface temperature of the heating roller detected. The temperature detecting member contacts a circumferential surface of the heating roller where the fixing belt is not extended around such that the temperature detecting member is held in a low frictional relation to the circumferential surface of the heating roller. It can control the friction of temperature detecting member, manage the temperature of belt correctly, and prevent bad fixing.

Description

technical field [0001] The present invention relates to a fixing device and an image forming device using the fixing device, and more particularly, to a temperature detection structure of a heating mechanism for fixing. Background technique [0002] Conventionally, in image forming apparatuses such as printers, printing machines, copiers, and facsimile machines, images are transferred to recording media such as paper, and unfixed images placed thereon are fixed and output. [0003] In the fixing device, a pair of rollers provided with an elastic layer are arranged facing each other, one of which serves as a heating roller, and the other serves as a pressure roller for a recording medium. In this configuration, the recording medium is conveyed while being held between the contact portion between the heating roller and the pressure roller, and heat is applied from the heating roller to melt and fix the unfixed image. [0004] For example, Japanese Unexamined Patent Publicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/08B65H5/02B65H5/06G03G15/20H05B3/00
CPCG03G15/2039G03G15/2078G03G2215/2041G03G2215/2032G03G2215/2016
Inventor 古川英男江尻拓也安井元一后藤浩行江原正尚小川博史吉永洋
Owner RICOH KK
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