摘要:
An electrophotograhic photoreceptor that has great ability to generate carriers and which has high sensitivity but low residual potential is disclosed. This photoreceptor is characterized by having formed on an electrically conductive support a light-sensitive layer containing a bisazo compound of the following formula: ##STR1## (wherein R.sub.1 is a cyano group, a chlorine atom or a bromine atom; X.sub.1 is a halogen atom, an alkyl group, an alkoxy group or a cyano group; X.sub.2 is a hydrogen atom, a halogen atom, an alkyl atom or an alkoxy group; A is ##STR2## wherein Y is a substituted or unsubstituted carbamoyl group or a substituted or unsubstituted sulfamoyl group; Z is an atomic group necessary for forming a substituted or unsubstituted aromatic hydrocarbon ring or a substituted or unsubstituted heteroaromatic ring; R.sub.2 is a hydrogen atom, a substituted or unsubstituted amino group, a substituted or unsubstituted carbamoyl group, a carboxy group or an ester group thereof; and A' is a substituted or unsubstituted aryl group).
摘要翻译:公开了具有很高的灵敏度但低残留电位的产生载体的能力的电子照相感光体。 该感光体的特征在于在导电载体上形成含有下式的双偶氮化合物的光敏层:其中R1是氰基,氯原子或溴原子; X1是卤素原子 ,烷基,烷氧基或氰基; X 2为氢原子,卤素原子,烷基或烷氧基; A为取代或未取代的氨基甲酰基或取代或未取代的氨基甲酰基 氨磺酰基; Z是形成取代或未取代的芳族烃环或取代或未取代的杂芳环所需的原子团; R 2是氢原子,取代或未取代的氨基,取代或未取代的氨基甲酰基,羧基或 其酯基; A'为取代或未取代的芳基)。
摘要:
Photoreceptor for electrophotography comprising a conductive support and an overlaying photosensitive layer thereon, said photosensitive layer containing at least one azo compound of Formula I or II ##STR1## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3 and Ar.sub.4 each is an aromatic hydrocarbon ring radical or an aromatic heterocyclic ring radical; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is an electron attractive group or hydrogen provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is an electron attractive group; and A is ##STR2## wherein X is a hydroxy group or a group represented by the formula: ##STR3## wherein R.sub.6 and R.sub.7 each is hydrogen or an alkyl group, and R.sub.8 is an alkyl or aryl group; Y is halogen, an alkyl or alkoxy group, a carboxy group, a sulfo group, a carbamoyl or sulfamoyl group; Z is an atomic group necessary for making an aromatic hydrocarbon ring or an aromatic heterocyclic ring; R.sub.5 is hydrogen, an amino or carbamoyl group, a carboxy group or an ester group thereof; Ar.sub.5 is an aryl group; n is an integer of 1, 2 or 3; and m is an integer of 0, 1 or 2.
摘要:
There is disclosed an electrophotosensitive receptor which comprises a conductive support and an electrophotosensitive layer which comprises a carrier transporting material and a specified trisazo compound wherein the azo compound is applied as a coating solution containing a solvent or as a liquid dispersion mixture containing a dispersion medium. Alternatively, the electrophotosensitive receptor comprises a conductive support and an electrophotosensitive layer which comprises said azo compound wherein the azo compound is applied as a coating solution containing a solvent and a binder or as a liquid dispersion medium containing a dispersion medium and a binder.
摘要:
A method for the formation of a color photographic image comprising exposure and development of a photographic element, said photographic element comprising at least one silver halide emulsion layer, a compound capable of releasing a diffusible azo dye compound during development, and at least one mordant layer arranged on a support. The color image formation is effected by the reaction of multivalent metallic ions with an azo dye compound having the formula: ##STR1## wherein G.sup.1 is an alkoxy or a thioalkoxy metallic chelating group; G.sup.2 is a metallic chelating group in which an oxygen atom is involved in the chelate formation; and Z.sup.1 and Z.sup.2 each is a group of atoms necessary to form an aromatic carbocyclic ring or a heterocyclic ring. The azo dye compound and the metallic ions form a metal complex by coordination of the azo group and the G.sup.1 and G.sup.2 groups of the azo dye compound with the multivalent metallic ions.
摘要:
A photographic light-sensitive element for a color diffusion transfer process which has a silver halide emulsion layer and also employs a nondiffusible cyan dye releasing compound. The compound is capable of releasing a diffusible metallic complex which forms an azo dye under alkaline conditions as a function of the development of the silver halide in said silver halide emulsion layer.
摘要:
A photographic light-sensitive element which comprises on a support a light-sensitive silver halide emulsion layer and having associated therewith a non-diffusible compound capable of, under alkaline condition, releasing a diffusible azo dye, said compound having the formula (1), ##STR1## wherein X represents a group of atoms necessary to complete a naphthalene ring or a benzene ring, G.sup.1 represents a hydroxy group, a salt thereof or a hydrolyzable precursor thereof, G.sup.2 represents a carboxy group, a salt thereof or a hydrolyzable precursor thereof, a hydroxy group, a salt thereof or a hydrolyzable precursor thereof, R.sup.1 is a hydrogen atom, an alkyl group or an aryl group, R.sup.2 is a hydrogen atom, an alkyl group or an aryl group, R.sup.2 represents a hydrogen atom, a halogen atom, an alkyl group, a carboxy group, a carbamoyl group or an amino group, each of which group may be substituted, R.sup.3 represents a hydrogen atom, a carboxy group, a carbamoyl group, a cyano group or a trifluoromethyl group, J represents a divalent linking group, Y represents a ballasted carrier moiety capable of releasing said diffusible dye under alkaline condition as a function of development of silver halide, m represents an integer of 1 to 3 and n represents zero or an positive integer not larger than m.
摘要:
There is disclosed a thermal developing light-sensitive material comprising a support and, provided thereon, photographic structural layers comprising at least one layer containing light-sensitive silver halide, said photographic structural layer comprising a compound represented by general formula (1);Formula (1)X.sub.1 --L.sub.1 --Awherein X.sub.1 represents a residual group of a photographic restrainer, L.sub.1 is a mere bonding hand or a divalent group and A is selected from the group consisting of a hydrogen atom, an amino group, a hydroxyl group, a carboxyl group or a salt thereof, a sulfo group or a salt thereof and a sulfin group or a salt thereof;and a compound represented by general formula (2);Formula (2)X.sub.2 --L.sub.2 --Bwherein X.sub.2 represents a residual group of a photographic restrainer, L.sub.2 is a divalent group and B is a ballast group.
摘要:
A thermally developable light-sensitive material having at least a light-sensitive silver halide, a reducing agent, a binder and a dye-providing material on a support is disclosed. The dye-providing material is a compound that releases or forms a diffusible dye as a function of development and which has a group capable of reacting with the nucleophilic agent.
摘要:
In a heat-transfer image-receiving element adapted to have a superposed relation, at least during a heat-transfer processing, with a heat-transfer element containing a heat-transferable dye donator, wherein said heat-transfer image-receiving element comprises at least one of compounds having the following general Formula (I), (II) or (III) and at least one of compounds having the following general Formula (IV) ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.3, R.sub.3 ' and R.sub.5 each is a hydrogen atom, alkyl, alkenyl, cycloalkyl, phenyl, naphthyl, heterocyclic, acyl, alkylsulfonyl, arylsulfonyl or aralkylsulfonyl group; R.sub.2, R.sub.4, R.sub.4 ', R.sub.6 and R.sub.7 each is a hydrogen atom, a halogen atom, or a monovalent organic group, l is an integer of from 1 to 4, q is an integer of from 1 to 6, m, n and p each is an integer of from 1 to 3, provided if the l, m, n, p and q each is an integer of not less than 2, the R.sub.2, R.sub.4, R.sub.4 ', R.sub.6 and R.sub.7 are allowed to be either the same as or different from one another; R.sub.8, R.sub.9 and R.sub.10 each is a hydrogen atom, a halogen atom, alkyl, alkenyl, cycloalkyl, phenyl, naphthyl, heterocyclic, acyl, amino, alkylsulfonyl, arylsulfonyl or aralkylsulfonyl group, and a, b and c each is an integer of from 1 to 4, R.sub.8, R.sub.9 and R.sub.10 are allowed to be either the same as or different from one another. The heat-transfer image receiving element renders a dye image formed in the color heat-diffusion transfer process stable particularly under a light irradiation condition and excellent in stability against discoloration by light and heat.
摘要:
A thermal transfer recording material is disclosed, comprising an azomethine dye represented by the following formula and a metal ion-containing compound. ##STR1##