US3684368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic apparatus
Assignee: Hitachi Ltd
•
Filing: 1969-07-09
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Granted: 1972-08-15
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Expires: 1989-07-09
Abstract
Abstract In a xerographic apparatus by taking advantage of the adhesive property of an oxide film produced by anodic oxidation of a metal, particularly aluminum, strong adhesion is obtainable in the formation of the xerographic medium between the metal substrate and a photoconductive insulator when the latter is evaporated on the surface of the metal substrate. Moreover, both the metal substrate and the photoconductive insulator may be made flexible if the thickness of the metal substrate and the photoconductive insulator evaporated thereon is made sufficiently thin.
Inventors
- 👤 Kiyohiko Tanno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G5/00; G03G5/10; G03G5/102; G03G5/104; G03G5/14; G03G5/142; G03G5/144
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A xerographic apparatus according to claim 1, wherein said metallic substrate of the xerographic medium is constructed in the shape of a rotating drum.
Claim 2
Dependent Claim
24 words
A xerographic apparatus according to claim 1, wherein said metallic substrate of the xerographic medium is constructed in the shape of an endless belt.
Claim 3
Dependent Claim
39 words
A xerographic apparatus according to claim 1, wherein said photoconductive material comprising a material selected from the group consisting of a unit substance Se, As2Se3, and As2S3, and a compound of at least two of Se, As2Se3 and As2S3.
Claim 4
Dependent Claim
34 words
A xerographic apparatus according to claim 3 wherein said metallic substrate has a thickness ranging from 50 to 100 Mu and said photoconductive material has a thickness ranging from 5 to 20 Mu .
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |