Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1992-10-29
1995-06-06
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 66, G03G 514
Patent
active
054222109
ABSTRACT:
A electrophotographic photosensitive member and an electrophotographic apparatus, a device unit and a facsimile machine using an electrophotographic photosensitive member which comprises a conductive support, a photosensitive layer and a protective layer, the protective layer containing resin formed by hardening a light-setting type acrylic monomer, and the photosensitive layer containing at least one compound selected from the group consisting of (A), (B) and (C) below:
(A) styryl compounds having a structure expressed by the following formula (1) and a melting point not higher than 135.degree. C.; ##STR1## wherein Ar.sup.1 and Ar.sup.2 are aromatic ring groups, Ar.sup.3 is a bivalent aromatic ring group or a bivalent heterocyclic group, R.sup.1 is an alkyl group or an aromatic ring group, R.sup.2 is a hydrogen atom, an alkyl group or an aromatic ring group, and n.sub.1 is 1 or 2, R.sup.1 and R.sup.2 possibly linking to form a ring when n.sub.1 =1;
(B) triarylamine compounds having a structure expressed by the following formula (2) and a melting point not higher than 150.degree. C.; ##STR2## wherein Ar.sup.4, Ar.sup.5 and Ar.sup.6 are each an aromatic ring group or a heterocyclic group:
(C) hydrazone compounds having a structure expressed by the following formula (3) and a melting point not higher than 155.degree. C.; ##STR3## wherein R.sup.3 is a hydrogen atom or an alkyl group, R.sup.4 and R.sup.5 are alkyl groups, aralkyl groups or aromatic ring groups, n.sub.2 is 1 or 2, A is an aromatic ring group, a heterocyclic group or --CH.dbd.C(R.sup.6)R.sup.7 (R.sup.6 and R.sup.7 are hydrogen atoms, aromatic ring groups or heterocyclic groups, but will never be hydrogen atoms at the same time). The photosensitive member suppresses the occurrence of cracks during forming of the protective layer, has high durability, and is free from any image defects.
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Amamiya Shoji
Aoki Katsumi
Kikuchi Toshiro
Maruyama Akio
Nagahara Shin
Canon Kabushiki Kaisha
Goodrow John
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