Conducting rubber roller, transfer printing roller and image forming equipment

Abstract

The invention relates to a conductive rubber roller, a transfer printing roller and an image forming device. The invention provides the conductive rubber roller which is manufactured easily with low cost, does not cause pollution to a component to be charged, and has reduced electric fluctuation and excellent durability; the transfer printing roller using the conductive rubber roller; and the image forming device provided with the transfer printing roller. The conductive rubber roller is used in electro-photography. The rubber constituent of the roller comprises an acrylonitrile divinyl rubber with 15 to 25 weight percent of acrylonitrile, an epichlorohydrin rubber with 70mol percent epoxy ethane, and a copolymer of epoxy ethane (A) / propylene oxide (B) / allyl glycidyl ether (C). The copolymerization ratio of the copolymer meets the relation that (A) and (B) is less than 90mol percent and the relation that (B) and (C) is less than 20mol percent. The Mooney viscosity (ML1+4100 DEG C) of the rubber combination of the rubber constituents is 30 to 70.

Description

technical field The present invention relates to a conductive rubber roller used in image forming apparatuses such as electrophotographic copying apparatuses, printers and electrostatic recording apparatuses. More specifically, the present invention relates to a transfer roller of a transfer apparatus for transferring a photosensitive material formed and carried on an image bearing member such as an electrophotographic photosensitive member by an image forming method such as an electrophotography method and an electrostatic recording method. A transfer image (toner image) is transferred to a recording medium and a transfer material such as paper. Background technique Various types of conductive rubber members including conductive rollers are used in various electrophotographic apparatuses such as xerographic copiers, laser printers, and facsimile machines. As a conductive rubber material, use moderately elastic, volume resistivity of 10 5 to 10 10 Materials that have an i...

AI Technical Summary

Problems solved by technology

This tends to cause problems of image deterioration, contamination of electrophotographic photosensitive members, etc.

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