Electrophotographic apparatus with photoreceptor having undercoat layer, containing an electronic transporting pigment and reactive organometallic compound
First Claim
1. An electrophotographic apparatus comprising:
- a negative-electrification electrophotographic photoreceptor comprising an electrically conductive support having thereon an undercoat layer and a photosensitive layer, wherein said undercoat layer comprises an electron-transporting pigment and a chemical product of a hydrolysis reaction of a reactive organometallic compound, said electron-transporting pigment comprising at least one member selected from the group consisting of a polycyclic quinone pigment, a perylene pigment, an azo pigment, a phthalocyanine pigment, an indigo pigment and a quinacridone pigment;
a charging member disposed so as to be in contact with said photoreceptor and which charges the photoreceptor upon application of a voltage to the charging member; and
an erase device.
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Abstract
A negative-electrification type electrophotographic photoreceptor which has an undercoat layer slightly soluble or insoluble in solvents and retains stable properties, and to provide a contact electrification type electrophotographic apparatus employing the photoreceptor and less apt to suffer dielectric breakdown. The electrophotographic photoreceptor comprises an electrically conductive support having thereon an undercoat layer and a photosensitive layer, in which the undercoat layer comprises an electron-transporting pigment and a reactive organometallic compound. This electrophotographic photoreceptor is suitable for use in an electrophotographic apparatus in which the photoreceptor is charged by applying a voltage to a charging member disposed so as to be in contact with the photoreceptor, in particular, an erase-less electrophotographic apparatus.
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Citations
20 Claims
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1. An electrophotographic apparatus comprising:
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a negative-electrification electrophotographic photoreceptor comprising an electrically conductive support having thereon an undercoat layer and a photosensitive layer, wherein said undercoat layer comprises an electron-transporting pigment and a chemical product of a hydrolysis reaction of a reactive organometallic compound, said electron-transporting pigment comprising at least one member selected from the group consisting of a polycyclic quinone pigment, a perylene pigment, an azo pigment, a phthalocyanine pigment, an indigo pigment and a quinacridone pigment; a charging member disposed so as to be in contact with said photoreceptor and which charges the photoreceptor upon application of a voltage to the charging member; and an erase device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An erase-less electrophotographic apparatus comprising:
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a negative-electrification electrophotographic photoreceptor comprising an electrically conductive support having thereon an undercoat layer and a photosensitive layer, wherein said undercoat layer comprises an electron-transporting pigment and a chemical product of a hydrolysis reaction of a reactive organometallic compound, said electron-transporting pigment comprising at least one member selected from the group consisting of a polycyclic quinone pigment, a perylene pigment, an azo pigment, a phthalocyanine pigment, an indigo pigment and a quinacridone pigment; and a charging member disposed so as to be in contact with said photoreceptor and which charges the photoreceptor upon application of a voltage to the charging member. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification