US4046562A
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Electrophotographic recording material and its method of manufacture
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1974-12-19
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Granted: 1977-09-06
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Expires: 1994-12-19
Abstract
Abstract An electrophotographic recording material comprises a photoconductive layer of selenium, selenium compounds, or alloys with selenium, a conductive and flexible substrate, and an intermediate layer between the substrate and photoconductive layer, the intermediate layer being a metal having a modulus of elasticity of less than 6000 kp/mm 2 and a recrystallization temperature of less than 40° C.
Inventors
- 👤 Wolf Glowinski
- 👤 Hartmut Dulken
- 👤 Gottfried Guder
- 👤 Karl-Heinz Kassel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:00
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G5/144; G03G5/10; G03G5/102
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
57 words
Electrophotographic recording material comprising a photoconductive layer of selenium, selenium compounds or alloys with selenium, a conductive, flexible substrate, and an intermediate layer between said substrate and said photoconductive layer, said intermediate layer consisting of a metal having a modulus of elasticity of less than 6000 kp/mm 2 and a recrystallization temperature of less than 40° C.
Claim 2
Dependent Claim
57 words
Electrophotographic recording material comprising a photoconductive layer of selenium, selenium compounds or alloys with selenium, a conductive, flexible substrate, and an intermediate layer between said substrate and said photoconductive layer, said intermediate layer consisting of a metal having a modulus of elasticity of less than 6000 kp/mm 2 and a recrystallization temperature of less than 40° C.
Claim 3
Dependent Claim
35 words
Electrophotographic recording material as defined in claim 1 wherein the intermediate layer is a metal having a modulus of elasticity of less than 2000 kp/mm 2 and a recrystallization temperature of less than 40° C.
Claim 4
Dependent Claim
25 words
Electrophotographic recording material as defined in claim 1 wherein the intermediate layer is made of lead and has layer thickness of about 3 to 12μ.
Claim 5
Dependent Claim
24 words
Electrophotographic recording material as defined in claim 1 wherein the intermediate layer is made of lead and has a layer thickness of about 6μ.
Claim 6
Dependent Claim
26 words
Electrophotographic recording material as defined in claim 1 wherein the intermediate layer is made of indium and has a layer thickness of about 0.5 to 4μ.
Claim 7
Dependent Claim
24 words
Electrophotographic recording material as defined in claim 1, wherein the intermediate layer is made of indium and has a layer thickness of about 2μ.
Claim 8
Dependent Claim
25 words
Electrophotographic recording material as defined in claim 1 wherein the flexible substrate is a steel belt having a thickness of about 0.05 to 0.2 mm.
Claim 9
Dependent Claim
23 words
Electrophotographic recording material as defined in claim 1 wherein the flexible substrate is a steel belt having a thickness of about 0.1 mm.
Claim 10
Dependent Claim
20 words
Electrophotographic recording material as defined in claim 1 wherein the photoconductive layer has a thickness of about 20 to 80μ.
Claim 11
Dependent Claim
20 words
Electrophotographic recording material as defined in claim 1 wherein the photoconductive layer has a thickness of about 45 to 80μ.
Claim 12
Dependent Claim
30 words
Electrophotographic recording material as defined in claim 1 wherein an inhibiting layer which inhibits the injection of charge carriers is disposed between the metallic intermediate layer and the photoconductive layer.
Claim 13
Dependent Claim
57 words
Method for producing an electrophotographic recording material comprising depositing a metal layer having a modulus of elasticity of less than 6000 kp/mm 2 and a recrystallization temperature of less than 40° C. onto a conductive flexible substrate, and then covering said metal layer with a photoconductive material of selenium, a selenium compound or an alloy of selenium.
Claim 14
Dependent Claim
57 words
Method for producing an electrophotographic recording material comprising depositing a metal layer having a modulus of elasticity of less than 6000 kp/mm 2 and a recrystallization temperature of less than 40° C. onto a conductive flexible substrate, and then covering said metal layer with a photoconductive material of selenium, a selenium compound or an alloy of selenium.
Claim 15
Dependent Claim
16 words
Method as defined in claim 11 wherein the metal layer is vapor deposited on the substrate.
Claim 16
Dependent Claim
16 words
Method as defined in claim 11 wherein the metal layer is galvanically deposited on the substrate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |