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US 4,362,800 AGranted
Sensitized photoconductive compositions and electrophotographic photosensitive layers using such
AssigneeFuji Photo Film Co., Ltd.
InventorsMasaaki Takimoto, Kenichi Sawada, Kouichi Kawamura
Life of this patent
Estimating the term…
Abstract
A photoconductive composition for electrophotography containing a photoconductive material, a sensitizing dye comprising a specific very stable sensitizing dye for red light to infrared rays, and a film-forming polymer binder.
Claims8
An electrophotoconductive composition comprising:
- (a) a photoconductor;
- (b) a sensitizing dye represented by the following general formula (I) or (II):
- ##STR13## wherein R.sup.0 and R.sup.1, which may be the same or different, each represents an alkyl group, a hydroxyalkyl group, an alkoxyalkyl group, an aralkyl group, a carboxyalkyl group, a carboxylatoalkyl group linked to an alkali metal cation, a sulfoalkyl group, or a sulfonatoalkyl group linked to an alkali metal cation;
- R.sup.2 and R.sup.3 each represents a hydrogen atom, or an alkyl group having 1 to 5 carbon atoms;
- R.sup.4 represents a hydrogen atom, a halogen atom, a hydroxy group, a carboxy group, an alkyl group having 1 to 5 carbon atoms, an unsubstituted or substituted aryl group, or an acyloxy group shown by ##STR14## wherein R.sup.5 represents an alkyl group having 1 to 5 carbon atoms, a phenyl group, or a substituted phenyl group;
- Z.sup.0 and Z.sup.1 each represents an atomic group necessary for forming a 5-membered or 6-membered heterocyclic ring or a condensed ring including a 5-membered or 6-membered heterocyclic ring;
- Z.sup.2 and Z.sup.3 each represents an atomic group necessary for forming a 3,3-dialkylindole ring or a 3,3-dialkylbenz[e]indole ring;
- m and n each represents 0 or 1;
- and X.sup..crclbar. represents an acid anion;
- and
- (c) a film-forming high molecular weight binder.
8 more elements
An electrophotographic photosensitive layer comprising a layer of a photoconductive composition containing:
- (a) a photoconductor;
- (b) a sensitizing dye represented by general formula (I) or (II):
- ##STR15## wherein R.sup.0 and R.sup.1, which may be the same or different, each represents an alkyl group, a hydroxyalkyl group, an alkoxyalkyl group, an aralkyl group, a carboxyalkyl group, a carboxylatoalkyl group linked to an alkali metal cation, a sulfoalkyl group, or a sulfonatoalkyl group linked to an alkali metal cation;
- R.sup.2 and R.sup.3 each represents a hydrogen atom, or an alkyl group having 1 to 5 carbon atoms;
- R.sup.4 represents a hydrogen atom, a halogen atom, a hydroxy group, a carboxy group, an alkyl group having 1 to 5 carbon atoms, a substituted or unsubstituted aryl group, or an acyloxy group shown by ##STR16## wherein R.sup.5 represents an alkyl group having 1 to 5 carbon atoms, a phenyl group, or a substituted phenyl group;
- Z.sup.0 and Z.sup.1 each represents a 5-membered or 6-membered heterocyclic ring or an atomic group necessary for forming a condensed ring including a 5-membered or 6-membered heterocyclic ring;
- Z.sup.2 and Z.sup.3 each represents a 3,3-dialkylindole ring or an atomic group necessary for forming a 3,3-dialkylbenzo[e]indole ring;
- m and n each is 0 or 1;
- and X.sup..crclbar. represents an acid anion;
- and
- (c) a film-forming high molecular weight binder.
8 more elements
Dependencies are inferred from the claim text.