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Heating rotating body, heating device, fixing device and image forming device

A heating device and heating source technology, applied in the field of fixing devices, imaging devices, and heating devices, can solve problems such as difficult temperature rise, and achieve the effect of suppressing temperature drop and shortening time

Active Publication Date: 2009-11-25
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the temperature of the fixing member rises, the heat of the heat-generating layer is transferred to the temperature-sensitive magnetic layer, so the temperature hardly rises.

Method used

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  • Heating rotating body, heating device, fixing device and image forming device
  • Heating rotating body, heating device, fixing device and image forming device
  • Heating rotating body, heating device, fixing device and image forming device

Examples

Experimental program
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Embodiment Construction

[0036] A first exemplary embodiment of a heating device, a fixing device, and an image forming device of the present invention will be described below based on the drawings.

[0037] figure 1 A printer 10 serving as an image forming apparatus is shown in . In the printer 10 , the optical scanning device 54 is fixed to the housing 12 constituting the main body of the printer 10 . A control unit 50 is provided at a position near the light scanning device 54 , and the control unit 50 controls operations of the light scanning device 54 and various parts of the printer 10 .

[0038] In the light scanning device 54, a light beam emitted from a light source not shown is scanned at a rotating polygon mirror, and is reflected by a plurality of optical components such as a reflection mirror, thereby emitting light corresponding to yellow (Y), magenta (M) , the light beams 60Y, 60M, 60C, 60K corresponding to the respective toners of cyan (C) and black (K). Light beams 60Y, 60M, 60C, 6...

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Abstract

A heating device includes: a magnetic field generating unit generating a magnetic field; a heat-generating member generating heat due to electromagnetic induction of the magnetic field, and having a heat-generating layer of a thickness that is thinner than a skin depth; a temperature-sensitive member including a temperature-sensitive magnetic member whose magnetic permeability starts to decrease continuously from a magnetic permeability change start temperature that is in a temperature region that is greater than or equal to a set temperature and less than or equal to a heat-resistant temperature; and an approaching / separating mechanism maintaining the temperature-sensitive member in a state of being separated from the heat-generating member until before a temperature of the temperature-sensitive member reaches the set temperature, and causing the temperature-sensitive member to contact the heat-generating member at and after the time when the temperature-sensitive member reaches the set temperature.

Description

technical field [0001] The present invention relates to a heating device, a fixing device and an image forming device. Background technique [0002] Conventionally, there is an electromagnetic induction heating type fixing device that uses, as a heat source, a coil that generates a magnetic field by energization and a heat generating body that generates heat by an eddy current generated by electromagnetic induction of the magnetic field. [0003] As a first embodiment of the fixing device using the electromagnetic induction heating method, there is a device configured in such a way that a belt is suspended between a fixing roller and a heating roller composed of a temperature-sensitive magnetic material having a predetermined Curie temperature, and passed through Heat is generated by electromagnetic induction of the magnetic field generated at the exciting coil; and a rotatable and movable conductive member is arranged inside the heat generating roller (refer to Japanese Pat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20H05B6/14G03G15/01
CPCG03G2215/2035G03G15/2007G03G15/2067G03G15/2032
Inventor 马场基文
Owner FUJIFILM BUSINESS INNOVATION CORP
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