Film for pressure roller

A pressure roller, film technology, applied in thin material processing, electric recording process applying charge pattern, equipment for applying electric recording process of charge pattern, etc. Weak strength and other problems, to achieve the effect of excellent release, reduce the number of production steps, and improve the sliding properties

Inactive Publication Date: 2007-09-19
SUMITOMO ELECTRIC FINE POLYMER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned film, the adhesive force of the fluororesin is weak, and in order to bond the sheet 1 containing the fluororesin and the sheet 2 containing polyimide together, an adhesive 3 must be used, so there are the following problems, That is, peeling due to the influence of the adhesive 3, increase in the number of manufacturing steps, quality control of multilayers including an adhesive layer, high cost, etc.

Method used

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  • Film for pressure roller
  • Film for pressure roller

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Effect test

Embodiment 1

[0039] Use product model MP-311 tetrafluoroethylene perfluoroalkoxyethylene copolymer (PFA, average particle diameter about 10 μm) manufactured by Mitsui Dupont Fluoro Chemical Co., Ltd., and add products manufactured by Ube Industries, Ltd. Model is the polyimide paint of U-ワニニス S301, and make it be the ratio shown in table 1 relative to both total amounts.

[0040] The resulting mixture was kneaded, shaped into a cylindrical shape, and dried.

[0041] Then, it baked in the gas atmosphere of 400 degreeC for 2 hours, and obtained the film for pressure rollers.

[0042] Next, with respect to the obtained film for a pressure roll, the tensile strength in the axial direction and the circumferential direction of the pressure roll was measured using an AGS-500D tensile and compression testing machine manufactured by Shimadzu Corporation. The results are shown in Table 1.

[0043] Table 1

[0044] Sample No

[0045] Next, with respect to the film for the pressure roll,...

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Abstract

A film for pressure roller not requiring any adhesive layer that with respect to not only tensile strength, tear strength, etc. but also excellent parting property from recording medium, etc., retains or enhances conventionally attained properties. There is provided a film for pressure roller characterized by having a polyimide layer wherein fluororesin powder is dispersed. In particular, the film for pressure roller is one characterized in that 10 to 20 vol% of fluororesin powder is dispersed in the polyimide layer, the fluororesin powder having an average particle diameter of 1 to 20 [mu]m.

Description

technical field [0001] The present invention relates to a film for a pressure roller, which is used for fixing toner transferred to a recording material in an electrophotographic image forming apparatus, particularly in an image forming apparatus such as a copying machine and a laser printer. film for the pressure roller of the fixing device. Background technique [0002] In image forming devices such as copiers and laser printers, a general fixing device that fixes toner transferred to a recording material is composed of a fixing roller as a heating rotating body, and a fixing roller that is in pressure contact with the fixing roller. The pressure is constituted by a pressure roller of a rotating body. [0003] By rotating these rollers, a recording material (transfer paper, printing paper, electrostatic recording paper, etc.) on which an unfixed image (toner image) is formed is introduced into a pressure contact nip between the rollers. Then, when the pressure-contact ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20C08J5/18C08L79/08F16C13/00
CPCG03G15/2057C08J5/18C08J2379/08C08L79/08C08L27/12Y10T428/254F16C13/00C08L2666/08
Inventor 昌司大助加藤千明羽深正弘
Owner SUMITOMO ELECTRIC FINE POLYMER INC
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