G - Physics – 03 – G
Patent
G - Physics
03
G
96/209
G03G 5/087 (2006.01) G03G 5/10 (2006.01) G03G 5/14 (2006.01)
Patent
CA 1102168
S P E C I F I C A T I O N To All Whom It May Concern: BE IT KNOWN THAT we, Yoshiaki Kato, Akira Fushida, Yasuo Ueda, Yasusuke Tohi and Tatsuo Aizawa, residing at 138-2, Midori-machi, Neyagawa-shi, Osaka-fu, Japan, 32-1, 1-Chome, Senriyama Nishi, Suita-shi, Osaka-fu, Japan, 13, 3-Chome, Kitano-cho, Ikuta-ku, Kobe-shi, Hyogo-ken, 14-5, 3-Chome, Chayamadai, Sakai-shi, Osaka-fu, Japan and 6-34, Kuwazu-cho, Higashisumiyoshi-ku, Osaka-shi, Osaka-fu, Japan, respectively, have invented certain new and useful improvements in " ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MATERIAL SUITABLE FOR OFFSET PRINTING AND LITHOGRAPHY AND PROCESS FOR PRODUCTION THEREOF", of which the following is a specification. Abstract of the Disclosure An electrophotographic photosensitive material suitable for offset printing and lithography comprising a flexible substrate, an electroconductive back coat layer formed on one surface of the substrate, an electroconduc- tive intermediate layer formed on the other surface of the substrate and a photoconductive layer formed on the intermediate layer, said photoconductive layer being composed of a fine powder of a photoconductor dispersed in an electrically insulating resin, wherein said inter mediate layer is composed of a composition comprising (A) an acrylic resin, (B) a vinyl acetate polymer having a degree of polymerization of 100 to 1700 and (C) a - 1 - resinous conducting agent, in said composition the weight ratio of acrylic resin (A)/vinyl acetate polymer (B) is in the range of 4/1 to 10/1 and the amount of the conduc- ting agent (C) is 20 to 100 parts by weight per 100 parts by weight per 100 parts by weight of the sum of the components (A) and (B), said intermediate layer has such a multilayer distribution structure that a combina- tion of the vinyl acetate polymer and the acrylic resin is predominantly distributed in the surface portion falling in contact with the photoconductive layer, and the photoconductive layer is bonded to the intermediate layer through said surface portion. - 1? -
278356
Aizawa Tatsuo
Fushida Akira
Kato Yoshiaki
Tohi Yasusuke
Ueda Yasuo
Mita Industrial Company Limited
Smart & Biggar
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