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Fixing device and image forming device

A technology for image and fixing parts, which is applied in the direction of corona discharge devices, electric recording technology using charge patterns, equipment for electric recording technology using charge patterns, etc., can solve problems such as temperature rise and damage to fixing parts, and achieve suppression Excessive temperature rise, the effect of suppressing the occurrence of peeling and cracking

Active Publication Date: 2015-09-02
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Meanwhile, for example, if small-sized paper is fed one after another, since only a small amount of heat is consumed in the non-paper-passing area, the temperature of the non-paper-passing area rises excessively, which may eventually damage the fixing unit

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

[0030] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0031]

[0032] figure 1 is a diagram showing a configuration example of an image forming apparatus to which the fixing device of the exemplary embodiment is applied. figure 1 The illustrated image forming apparatus 1 is a so-called tandem type color printer, and includes: an image forming unit 10 that performs image formation based on image data; and a controller 31 that controls operations of the entire image forming apparatus 1 . The image forming apparatus 1 further includes: a communication unit 32 that communicates with, for example, a personal computer (PC) 3 , an image reading device (scanner) 4 , etc., to receive image data; The received image data is subjected to predetermined image processing.

[0033] The image forming assembly 10 includes four image forming units 11Y, 11M, 11C, and 11K (also collectively referred to as “...

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PUM

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Abstract

The fixing device includes: a fixing member including a conductive layer, and fixing toner on a recording medium by heat generation of the conductive layer by electromagnetic induction; a magnetic field generating member generating an alternate-current magnetic field intersecting with the conductive layer; and a magnetic path forming member that has an outer circumferential surface arranged to be in contact with an inner circumferential surface of the fixing member, that forms a magnetic path of the alternate-current magnetic field generated by the magnetic field generating member, and that includes: a magnetic layer having a changing range within a temperature range of about 20 degrees C., the changing range allowing a magnetic property of the magnetic layer to change between ferromagnetic and a paramagnetic properties in accordance with temperature; and an outer circumferential layer made of any one of or both chromium nitride as CrN and chromium nitride as Cr2N.

Description

technical field [0001] The present invention relates to a fixing device and an image forming device. Background technique [0002] As fixing devices respectively installed in image forming devices using an electrophotographic method such as copiers and printers, fixing devices using an electromagnetic induction heating method are known. [0003] For example, Japanese Published Patent Application Publication No. 2003-186322 describes an electromagnetic induction heating fixing device in which an electromagnetic induction coil as a magnetic flux generating unit is arranged in a core metal cylinder formed of a magnetic metal. The inside of the fixing roller, and the fixing roller utilizes the induction magnetic field generated by the electromagnetic induction coil to induce eddy current to the fixing roller to generate heat. [0004] Such a fixing device generally uses a belt member having a small heat capacity as a fixing member that generates heat by, for example, electromag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/02G03G15/01
CPCG03G2215/2035G03G15/2064
Inventor 马场基文内藤康隆长谷波茂彦
Owner FUJIFILM BUSINESS INNOVATION CORP