US4757347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil applying roller for use in an electrophotographic copying apparatus
Assignee: Nitto Kogyo Co Ltd
•
Filing: 1987-07-28
•
Granted: 1988-07-12
•
Expires: 2007-07-28
Abstract
Abstract Disclosed is an oil applying roller provided in contact with the surface of a fixing roller of an electrophotographic copying apparatus. The oil applying roller comprises a core member, an oil retaining layer and a surface layer. The surface layer has less oil retaining ability than that of the oil retaining layer. Thus the oil applying roller can supply a small amount of oil to the fixing roller stably.
Inventors
- 👤 Junichi Tamaoki
- 👤 Tetsuya Yamada
- 👤 Sanji Inagaki
- 👤 Kesaaki Kitazawa
- 👤 Naotaka Nishikawa
- 👤 Youichi Ishikawa
- 👤 Kenji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
An oil applying roller provided in contact with the surface of a fixing roller for use in an electrophotographic copying apparatus comprising: a core member; an oil retaining layer formed on said core member; and a surface layer, formed on said oil retaining layer and having less oil retaining ability than that of said oil retaining layer, for regulating the amount of oil to be applied to said fixing roller.
Claim 2
Dependent Claim
70 words
An oil applying roller provided in contact with the surface of a fixing roller for use in an electrophotographic copying apparatus comprising: a core member; an oil retaining layer formed on said core member; and a surface layer, formed on said oil retaining layer and having less oil retaining ability than that of said oil retaining layer, for regulating the amount of oil to be applied to said fixing roller.
Claim 3
Dependent Claim
19 words
An oil applying roller according to claim 1, wherein said oil retaining layer comprises a cellulose integrated fibrous material.
Claim 4
Dependent Claim
25 words
An oil applying roller according to claim 2, wherein said surface layer comprises a material having smaller density than that of said oil retaining layer.
Claim 5
Dependent Claim
16 words
An oil applying roller according to claim 3, wherein said surface layer comprises heat resistant felt.
References Cited (Backward Citations)
JPS5013645A
Cited
JPS557725A
Cited
US4324482A
Cited
US4533231A
Cited
US4530140A
Cited
US4536076A
Cited
US4571056A
Cited
US4593992A
Cited
JPS60172172A
Cited
JPS6123184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |