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Fixing device and image forming apparatus

A fixing belt and image fixing technology, which is applied in the field of image forming devices and fixing devices, and can solve problems such as inability to accurately detect the temperature of the fixing belt

Active Publication Date: 2016-05-18
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, when the temperature of the fixing belt is excessively raised in the non-passing area due to the continuous printing operation for a long time, there may be a problem that the temperature of the end portion of the fixing belt located in the non-passing area exceeds the detectable temperature of the temperature sensor. upper limit of the range, making it impossible to accurately detect the temperature of the end of the fixing belt

Method used

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

Examples

Experimental program
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Embodiment Construction

[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0022] figure 1 An image forming apparatus according to an embodiment of the present invention is shown. exist figure 1 Among them, the image forming apparatus 1 according to the embodiment of the present invention is an electrophotographic image forming apparatus, such as a printer. The image forming apparatus 1 has a substantially box-shaped casing 2 , and a paper feeding cassette 3 is provided at a lower portion of the casing 2 . Paper as a recording medium is housed in the paper feed cassette 3 . In addition, a paper output tray 4 is provided on the upper portion of the box body 2 . An accommodating portion for accommodating the toner cartridge 5 is also provided on the upper portion of the case 2 , and a cover portion 6 for opening and closing the accommodating portion is provided on the case 2 .

[0023] A transport path 7 is formed in the housing 2 , and the...

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PUM

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Abstract

A fixing device fixing an image on a recording medium includes a fixing belt rotatable around a first rotation axis, a pressuring member, a heat source body and a cover member. The pressuring member forms a nip part pressuring and making the recording medium pass through with the fixing belt. The heat source body is arranged inside the fixing belt and heats the fixing belt by emitting radiant heat. The cover member is arranged between the fixing belt and the heat source body and covers the heat source body. The nip part has a passing area where the recording medium passes through and a non-passing area outside the passing area in an axial direction. The cover member covers a part of the heat source body corresponding to the non-passing area and includes through holes formed so as to adjust surface temperature of the heat source body.

Description

technical field [0001] The present invention relates to a fixing device for fixing an image on a recording medium such as paper, and an image forming device such as a copier, a printer, a facsimile machine, and an all-in-one machine provided with the fixing device. Background technique [0002] In recent years, in the field of electrophotographic image forming apparatuses, a belt-type fixing device in which an endless fixing belt is rotated together with a pressure roller has been popularized. Thin material is formed. The belt-type fixing device adopts a low-heat-capacity fixing belt, which can shorten the warm-up time compared with the heat-roller-type fixing device in the prior art. [0003] In the belt-type fixing device, a heat source body such as a halogen heater is provided inside the fixing belt, and the fixing belt is heated by radiant heat emitted from the heat source body. In addition, the axial length of the fixing belt is greater than the maximum width of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20
CPCG03G15/2039G03G15/2017G03G15/2053
Inventor 荣木天山岸义弘四辻刚史
Owner KYOCERA DOCUMENT SOLUTIONS INC
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