US4119461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material for electrophotography comprising a silicon oil
Assignee: Konica Minolta Inc
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Filing: 1977-04-18
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Granted: 1978-10-10
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Expires: 1997-04-18
Abstract
Abstract A photosensitive material of the binder type for electrophotography having a photosensitive layer of the material comprising a silicon oil having a viscosity of at least 6000 cs when measured at 25° C.
Inventors
- 👤 Yutaka Yamada
- 👤 Akira Kato
- 👤 Tohru Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:52
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0578
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A photosensitive material for electrophotography having a binder type photosensitive layer containing photoconductive materials of the inorganic type comprising a silicon oil having a viscosity of at least 6,000 cs when measured at 25° C. said silicon oil being represented by the following general formula: ##STR2## wherein R is methyl or phenyl, and n is 700 to 2500.
Claim 2
Dependent Claim
58 words
A photosensitive material for electrophotography having a binder type photosensitive layer containing photoconductive materials of the inorganic type comprising a silicon oil having a viscosity of at least 6,000 cs when measured at 25° C. said silicon oil being represented by the following general formula: ##STR2## wherein R is methyl or phenyl, and n is 700 to 2500.
Claim 3
Dependent Claim
32 words
A photosensitive material for electrophotography according to claim 1 wherein said photosensitive layer comprises at least one additive taken from the class consisting of zinc oxide, cadmium sulfide, zinc sulfide, titanium dioxide.
Claim 4
Dependent Claim
23 words
A photosensitive material for electrophotography according to claim 2 wherein said layer further comprises a resin binder in which said additive is dispersed.
References Cited (Backward Citations)
US3132941A
Cited
US3775115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |