US4346157A
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Complex type electrophotographic plate
Assignee: Hitachi Ltd
•
Filing: 1981-02-09
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Granted: 1982-08-24
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Expires: 2001-02-09
Abstract
Abstract A complex type electrophotographic plate comprises a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 mu m; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 mu m and being substantially transparent to light of a wave length of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X-(CH=CH)nAr where X is a heterocyclic group selected from the group consisting of <IMAGE> +TR <IMAGE> and Y is O or S, R is a lower alkyl group; the hetero ring may be substituted; n is an integer of 0, 1 or 2; and Ar is an aryl or substituted aryl group. The electrophotographic plate has a high light sensitivity and can be used in more than 103 repetitions without fatigue.
Inventors
- 👤 Atsushi Kakuta
- 👤 Shigeo Suzuki
- 👤 Yasuki Mori
- 👤 Hirosada Morishita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:09
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0637; G03G5/0627; G03G5/0629; G03G5/0631; G03G5/0644; G03G5/0661; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
152 words
A complex type electrophotographic plate comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material, and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X--(CH═CH) n Ar where X is a heterocyclic group selected from the group consisting of and Y is O or S; R is a lower alkyl group; the hetero ring may be substituted; n is an integer of 0, 1 or 2; and Ar is an aryl or
Claim 2
Dependent Claim
152 words
A complex type electrophotographic plate comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material, and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X--(CH═CH) n Ar where X is a heterocyclic group selected from the group consisting of and Y is O or S; R is a lower alkyl group; the hetero ring may be substituted; n is an integer of 0, 1 or 2; and Ar is an aryl or
Claim 3
Dependent Claim
28 words
A complex type electrophotographic plate according to claim 1, wherein said charge generating material is a member selected from the group consisting of monoazo pigments, bisazopigments and phthalocyanine
Claim 4
Dependent Claim
22 words
A complex type electrophotographic plate according to claim 1, wherein said charge generating material is a member selected from the class of
Claim 5
Dependent Claim
156 words
A complex type electrophotographic plate comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic styryl compounds represented by the general formula: X--(CH═CH) n Ar where X is a heterocyclic group selected from the group consisting of ##STR61## and Y is O or S; R is a lower alkyl group; the hetero ring may be substituted, n is an integer of 1 or 2; and Ar is an aryl or substituted aryl group.
Claim 6
Dependent Claim
156 words
A complex type electrophotographic plate comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic styryl compounds represented by the general formula: X--(CH═CH) n Ar where X is a heterocyclic group selected from the group consisting of ##STR61## and Y is O or S; R is a lower alkyl group; the hetero ring may be substituted, n is an integer of 1 or 2; and Ar is an aryl or substituted aryl group.
Claim 7
Dependent Claim
29 words
A complex type electrophotographic plate according to claim 4, wherein said charge generating material is a member selected from the group consisting of monoazo pigments, bisazopigments and phthalocyanine pigments.
Claim 8
Dependent Claim
28 words
A complex type electrophotographic plate according to claim 4, wherein said charge generating material is a member selected from the class of chalcogenides of arsenic, cadmium and antimony.
Claim 9
Dependent Claim
145 words
A complex type electrophotographic plate, comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X--Ar where X is a heterocylic group selected from the group consisting of ##STR62## and Y is O or S; R is a lower alkyl group; the hetero ring may be substituted; and Ar is an aryl or substituted aryl group.
Claim 10
Dependent Claim
145 words
A complex type electrophotographic plate, comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X--Ar where X is a heterocylic group selected from the group consisting of ##STR62## and Y is O or S; R is a lower alkyl group; the hetero ring may be substituted; and Ar is an aryl or substituted aryl group.
Claim 11
Dependent Claim
29 words
A complex type electrophotographic plate according to claim 7, wherein said charge generating material is a member selected from the group consisting of monoazo pigments, bisazopigments and phthalocyanine pigments.
Claim 12
Dependent Claim
28 words
A complex type electrophotographic plate according to claim 7, wherein said charge generating material is a member selected from the class of chalcogenides of arsenic, cadmium and antimony.
Claim 13
Dependent Claim
17 words
A complex type electrophotographic plate according to claim 7, wherein the compounds are members consisting of ##STR63##
Claim 14
Dependent Claim
17 words
A complex type electrophotographic plate according to claim 7, wherein the compounds are members consisting of ##STR64##
Claim 15
Dependent Claim
17 words
A complex type electrophotographic plate according to claim 7, wherein the compounds are members consisting of ##STR65##
Claim 16
Dependent Claim
17 words
A complex type electrophotographic plate according to claim 7, wherein the compounds are members consisting of ##STR66##
Claim 17
Dependent Claim
145 words
A complex type electrophotographic plate comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic styryl compounds represented by the general formula: X--(CH═CH)Ar where X is a heterocyclic group selected from the group consisting of ##STR67## and Y is O or S; R is a lower alkyl group; the heteroring may be substituted; and Ar is an aryl or substituted aryl group.
Claim 18
Dependent Claim
145 words
A complex type electrophotographic plate comprising a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 μm; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 μm and being substantially transparent to light of a wavelength of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic styryl compounds represented by the general formula: X--(CH═CH)Ar where X is a heterocyclic group selected from the group consisting of ##STR67## and Y is O or S; R is a lower alkyl group; the heteroring may be substituted; and Ar is an aryl or substituted aryl group.
Claim 19
Dependent Claim
29 words
A complex type electrophotographic plate according to claim 14, wherein said charge generating material is a member selected from the group consisting of monoazo pigment, bisazopigments and phthalocyanine pigments.
Claim 20
Dependent Claim
28 words
A complex type electrophotographic plate according to claim 14, wherein said charge generating material is a member selected from the class of chalcogenides of arsenic, cadmium and antimony.
Claim 21
Dependent Claim
18 words
A complex type electrophotographic plate according to claim 14, wherein the styryl compounds are members consisting of ##STR68##
Claim 22
Dependent Claim
18 words
A complex type electrophotographic plate according to claim 14, wherein the styryl compounds are members consisting of ##STR69##
References Cited (Backward Citations)
US4245021A
Cited
US4278746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |