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Fusing roller and fusing apparatus having the same

A technology of fixing roller and generating unit, which is applied to electric heating device, electric recording process applying charge pattern, equipment applying electric recording process of electric charge pattern, etc., can solve the problem that it is difficult to achieve uniform temperature distribution of recording medium 20, etc.

Inactive Publication Date: 2006-03-01
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it takes a while for the conventional fixing device to compensate for the temperature difference, and thus, it is difficult to achieve a uniform temperature distribution on the recording medium 20.

Method used

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  • Fusing roller and fusing apparatus having the same
  • Fusing roller and fusing apparatus having the same
  • Fusing roller and fusing apparatus having the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] refer to image 3 and 4 , the fixing device 100 includes: a fixing roller 110 that generates heat to fix a toner image (not shown) on a recording medium (not shown); The fixing roller 110 contacts and presses the recording medium down onto the fixing roller 110 . The recording medium passes through a roller nip between the fixing roller 110 and the pressing roller 130 .

[0027] The pressing roller 130 is supported by the shaft member 133 such that the roller body 131 of the pressing roller 130 rotates with respect to the shaft member 133 . The roll body 131 of the press roll 130 is formed as a tube. A coat layer 132 is formed on the outer peripheral surface of the roller body 131 in order to facilitate easy separation of the fixing roller 110 from the toner image after the toner image is fixed on the recording medium. Alternatively, the fixing roller 110 may be formed to apply both heat and pressure to the recording medium, in which case the pressing roller 130 is ...

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PUM

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Abstract

A fusing roller and a fusing apparatus having the fusing roller are provided. The fusing roller includes a roller unit and an induced heat generation unit that is installed on an outer circumferential surface of the roller unit. Eddy currents are generated in the roller unit in response to an alternating current input thereto. An insulation unit insulates the induced heat generation unit from the roller unit.

Description

technical field [0001] The present invention relates to a fixing device. In particular, the present invention relates to a fixing roller that firmly contacts the roller unit with an induction heat generating unit that generates induction heat using concentration of magnetic flux, thereby maximizing the efficiency of the induction heat generating unit and a fixing device having the same . Background technique [0002] Generally, an electrophotographic image forming apparatus such as a laser printer, a digital copier, etc., prints a monochrome or multicolor image by applying light to a photosensitive medium charged with a predetermined potential to form an electrostatic latent image thereon. The developing device develops the electrostatic latent image with toner of a predetermined color. The developed toner image is transferred onto a sheet of paper. The transferred image is fused onto a sheet of paper. [0003] According to the type of developer used, electrophotographic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20G03G15/00
CPCG03G15/2064G03G15/2025G03G15/2028G03G15/2053H05B6/145
Inventor 金欢谦权重基赵德贤蔡荣敏韩相龙
Owner SAMSUNG ELECTRONICS CO LTD