Conductive rubber composition, conductive rubber roller, and image forming device

A rubber composition and conductivity technology, applied in the fields of electric recording technology using charge pattern, equipment for electric recording technology using charge pattern, and electrography, etc., can solve the problems of suppressing resistance rise, complex mechanism, transfer voltage control, etc. Difficulty and other problems, to achieve the effect of excellent energization durability

Pending Publication Date: 2021-06-25
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the energization durability is poor, it will be difficult to control the transfer voltage, and the mechanism of the device will become complicated in order to suppress the increase in resistance

Method used

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  • Conductive rubber composition, conductive rubber roller, and image forming device
  • Conductive rubber composition, conductive rubber roller, and image forming device
  • Conductive rubber composition, conductive rubber roller, and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0104] Hereinafter, the present invention will be described in detail through examples, but the present invention is not limited by the following examples, and modifications and embodiments within the scope of the present invention are included in the scope of the present invention.

[0105] [Evaluation method]

[0106] (1) Resistance value

[0107] like image 3 As shown, a conductive rubber roller 1 through which a metal shaft 2 is inserted is supported and disposed above the metal cylinder 3 so that the conductive rubber roller 1 is in contact with the metal cylinder 3 . A DC power supply 4 and a resistor 5 were connected in series between the metal shaft 2 and the metal cylinder 3 to fabricate a resistance value measurement circuit. Furthermore, the DC power supply 4 is connected to the metal shaft 2 on the - side, and connected to the resistor 5 on the + side.

[0108] A load F of 500 gf was applied to both ends of the metal shaft 2, the conductive rubber roller 1 was ...

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PUM

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Abstract

The invention provides a rubber composition capable of forming a conductive rubber roller with excellent electrification durability, a conductive rubber roller and an image forming device. The conductive rubber composition contains (A) a base rubber, (B) an alkylene oxide-phenyl glycidyl ether copolymer, and (C) an ion conductive agent.

Description

technical field [0001] The present invention relates to a conductive rubber composition, a conductive rubber roller, and an image forming device. Background technique [0002] In an electrophotographic image forming apparatus, conductive rubber rollers such as charging rollers, developing rollers, transfer rollers, and toner supply rollers are used. These conductive rubber rollers are required to have various properties such as electrical conductivity such as electrical resistance, low hardness, low compression permanent strain, energized durability (low resistance increase value when energized continuously), and non-polluting properties depending on the application. [0003] Here, when a conductive rubber roller is used as a transfer roller of an image forming apparatus, durability against energization becomes important. If the energization durability is poor, it will be difficult to control the transfer voltage, and the mechanism of the device will become complicated in o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L23/16C08L71/02C08K13/02C08K5/44C08K3/26C08K3/06C08K5/47C08K5/40C08J9/10G03G15/16
CPCC08L9/02C08J9/103C08J9/0061C08J9/0066C08J9/0033G03G15/162C08K2003/265C08K2201/001C08L2201/04C08L2205/03C08L2203/14C08J2203/04C08J2309/02C08J2423/16C08J2471/02C08L2203/20C08L23/16C08L71/02C08K13/02C08K5/44C08K3/26C08K3/06C08K5/47C08K5/40
Inventor 寺田杰松谷雄一朗
Owner SUMITOMO RUBBER IND LTD
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