Transfer material carrying member and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsNoriko Ohtani, Naoto Fujimura, Kiyoshi Sakai, Teigo Sakakibara, Yuichi Hashimoto
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Abstract
There is provided a transfer material carrying member and an image forming apparatus using it. The transfer material carrying member comprises a metal oxide and a polycarbonate resin having a repeating unit represented by the following formula: ##STR1## The transfer medium carrying member of the present invention has superior surface electrical characteristics, mechanical strength and transparency. The image forming apparatus making use of the transfer medium carrying member enables consistently good transfer even when copies are repeatedly taken and makes it possible to obtain consistently stable, good images.
Claims30
A transfer material carrying member for electrophotography comprising conductive metal oxide particles dispersed in a polycarbonate resin formed from a repeating unit represented by the following Formula (1):
- ##STR6## wherein A represents a straight-chain, branched or cyclic alkylidene group, an aryl-substituted alkylidene group, an arylenedialkylidene group, --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
- and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkenyl group, said transfer material carrying member having a volume resistivity from 1.5.times.10.sup.14 .OMEGA..multidot.cm to 1.2.times.10.sup.16 .OMEGA..multidot.cm.
An electrophotographic image forming apparatus having an image bearing member and a transfer material carrying member;
- said transfer material carrying member comprising conductive metal oxide particles dispersed in a polycarbonate resin formed from a repeating unit represented by the following Formula (1):
- ##STR7## wherein A represents a straight-chain, branched or cyclic alkylidene group, an aryl-substituted alkylidene group, an arylenedialkylidene group, --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
- and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkenyl group, said transfer material carrying member having a volume resistivity from 1.5.times.10.sup.14 .OMEGA..multidot.cm to 1.2.times.10.sup.16 .OMEGA..multidot.cm.
Dependencies are inferred from the claim text.