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Roller for electrophotography and production method thereof, and electrophotographic image forming apparatus

A technology of electrophotography and manufacturing method, applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, the electric recording technique, etc.

Active Publication Date: 2016-08-10
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to the present inventors' research, even the transfer roller disclosed in Japanese Patent Application Laid-Open No. 2010-211020 causes such as low-molecular rubber The component of the component bleeds out from the layer including the rubber forming the transfer roller, causing the component to adhere to the surface of other members such as an image bearing member

Method used

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  • Roller for electrophotography and production method thereof, and electrophotographic image forming apparatus
  • Roller for electrophotography and production method thereof, and electrophotographic image forming apparatus
  • Roller for electrophotography and production method thereof, and electrophotographic image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] (Preparation of Unvulcanized Rubber Composition)

[0112] and were added to , and a 7-L internal mixer (trade name: WDS7-30: Nihon Spindle Manufacturing Co., Ltd. (former company name : manufactured by Moriyama Corporation) was kneaded for 7 minutes at a rotor speed of 30 rpm.

[0113]

[0114] - Acrylonitrile-butadiene rubber (Nipol DN401LL: Zeon Corporation):

[0115] 68 parts by mass

[0116] -Epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer containing 56.7% by mass of ethylene oxide (EPION301: Daiso Co., Ltd. (new company name: Osaka Soda Co., Ltd.)) :

[0117] 22 parts by mass

[0118] - Epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer containing 37.2% by mass of ethylene oxide (Epichlomer CG102: Daiso Co., Ltd. (new company name: Osaka Soda Co., Ltd.) ):

[0119] 10 parts by mass

[0120]

[0121] - Carbon black (Asahi #35G: Asahi Carbon Co., Ltd.) 45 parts by mass

[0122]

[0123] - Zinc stearate (zinc stearate: NOF Co...

Embodiment 2

[0180] In addition to adding 22 parts by mass of epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer ("EPION301") containing 56.7 mass% of ethylene oxide, Daiso Co., Ltd. (new company name: OsakaSoda Co., Ltd. ., Ltd.) and 10 parts by mass of epichlorohydrin / ethylene oxide / allyl glycidyl ether terpolymer ("HydrinT3106S", Zeon Corporation) containing 37.2 mass% of ethylene oxide for alcohol rubber Except, in the same manner as in Example 1, a roller for electrophotography of Example 2 was obtained.

Embodiment 3

[0182] Except that 71 parts by mass of acrylonitrile-butadiene rubber ("Nipol DN401LL", Zeon Corporation) was used for the unvulcanized rubber and 29 parts by mass of epichlorohydrin / ethylene oxide / allyl shrinkage containing 56.7 mass% of ethylene oxide Glyceryl ether terpolymer (EPION301: manufactured by Daiso Co., Ltd. (new company name: Osaka Soda Co., Ltd.)) was used alone for alcohol rubber, and Examples were obtained in the same manner as in Example 1 3 rollers for electrophotography.

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Abstract

A roller for electrophotography that has a low electric resistance value and that is still further reduced in contaminating property of other member is provided. The roller includes an electro-conductive mandrel and a surface layer having an electro-conductive foam. The electro-conductive foam includes a vulcanized product of an unvulcanized rubber composition including an acrylonitrile-butadiene rubber and a hydrin rubber. The vulcanized product has a matrix-domain structure having a sea phase and an island phase, contains ethylene oxide of 8.0% by mass or more and 20.0% by mass or less based on a total amount of the vulcanized product, and has a spin-spin relaxation time T2 of 750 [mu]s<T2<930 [mu]s.

Description

technical field [0001] The present invention relates to a roller for electrophotography used in an electrophotographic image forming apparatus and a method of manufacturing the same. The present invention also relates to an electrophotographic image forming apparatus. Background technique [0002] An electrophotographic image forming apparatus generally includes: an image bearing member such as an electrophotographic photosensitive member, a charging member that charges the surface of the image bearing member, an exposure device in which the surface of the image bearing member is irradiated with light adjusted according to image information, by A developing member that develops a developer (toner) to form a visible image (toner image) on an image bearing member, and a transfer member that transfers the visible image on the image bearing member to a recording material . [0003] In an electrophotographic image forming apparatus, a roller for electrophotography such as a tra...

Claims

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Application Information

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IPC IPC(8): G03G15/16
CPCG03G15/1685G03G15/162
Inventor 高桥宏文泽田弥齐井上晶司
Owner CANON KK
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