Patent US2272915A successfully refreshed from Google Patents.
US4836136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer supplying member
Assignee: Minolta Co Ltd
•
Filing: 1988-03-04
•
Granted: 1989-06-06
•
Expires: 2008-03-04
Abstract
Abstract The disclosure relates to a developer supplying member such as a developing sleeve for use in the developing device of a copying apparatus. The developer supplying member of the invention is coated with an overcoat layer comprising an amorphous carbon film formed by plasma polymerization with a glow discharge method and containing fluorine. Further, the overcoat layer comprises an organic polymerized film formed by causing glow discharge using at least one compound selected from the group consisting of fluorine incorporating methacrylate, fluorine incorporating acrylate and fluoroalkylsilane.
Inventors
- 👤 Toshiya Natsuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:57
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0806; G03G15/0818; C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; G03G15/09; G03G15/0921; G03G15/0928; G03G2215/00; G03G2215/06; G03G2215/0634; G03G2215/0636
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
28 words
A developer supplying member which comprises a surface on which developer is transported, said surface being formed with an overcoat layer of an amorphous carbon film containing fluorine.
Claim 2
Dependent Claim
28 words
A developer supplying member which comprises a surface on which developer is transported, said surface being formed with an overcoat layer of an amorphous carbon film containing fluorine.
Claim 3
Dependent Claim
24 words
A developer supplying member as claimed in claim 1 wherein the amorphous carbon film is formed by plasma polymerization with a glow discharge method.
Claim 4
Dependent Claim
27 words
A developer supplying member as claimed in claim 1 wherein the amorphous carbon film contains fluorine in an amount of about 0.1 to about 35 atomic %.
Claim 5
Dependent Claim
24 words
A developer supplying member as claimed in claim 1 wherein the amorphous carbon film has a thickness of about 1 micron to 2 millimeters.
Claim 6
Dependent Claim
28 words
A developer supplying member as claimed in claim 1 wherein the surface is so formed with a plurality of concavities and convexities in a linear or dotted shape.
Claim 7
Dependent Claim
30 words
A developer supplying member as claimed in claim 5 wherein the thickness of each of the concavities is about 0 to about 95% of that of each of the convexities.
Claim 8
Dependent Claim
26 words
A developer supplying member as claimed in claim 5 wherein the maximum diameter of the concavities and convexities is about 5 micron to about 2 millimeters.
Claim 9
Dependent Claim
35 words
A developer supplying member as claimed in claim 1 is used as a developing sleeve in a developing device of a copying apparatus wherein the developer is magnetically attracted on its surface for transportation therealong.
Claim 10
Dependent Claim
49 words
A developer supplying member comprising a surface on which developer is transported, said surface being formed with an overcoat layer of an organic polymerized film formed by causing glow discharge using at least one compound selected from the group consisting of fluorine incorporating methacrylate, fluorine incorporating acrylate and fluoroalkylsilane.
Claim 11
Dependent Claim
49 words
A developer supplying member comprising a surface on which developer is transported, said surface being formed with an overcoat layer of an organic polymerized film formed by causing glow discharge using at least one compound selected from the group consisting of fluorine incorporating methacrylate, fluorine incorporating acrylate and fluoroalkylsilane.
Claim 12
Dependent Claim
27 words
A developer supplying member as claimed in claim 9 wherein the amorphous carbon film contains fluorine in an amount of about 0.1 to about 35 atomic %.
Claim 13
Dependent Claim
24 words
A developer supplying member as claimed in claim 9 wherein the amorphous carbon film has a thickness of about 1 micron to 2 millimeters.
Claim 14
Dependent Claim
28 words
A developer supplying member as claimed in claim 9 wherein the surface is so formed with a plurality of concavities and convexities in a linear or dotted shape.
Claim 15
Dependent Claim
30 words
A developer supplying member as claimed in claim 12 wherein the thickness of each of the concavities is about 0 to about 95% of that of each of the convexities.
Claim 16
Dependent Claim
26 words
A developer supplying member as claimed in claim 12 wherein the maximum diameter of the concavities and convexities is about 5 micron to about 2 millimeters.
Claim 17
Dependent Claim
32 words
A developer supplying member as claimed in claim 9 is used as a developing sleeve in a developing device of a copying apparatus wherein the developer is magnetically attracted for transportation therealong.
References Cited (Backward Citations)
US4086873A
Cited
US4136637A
Cited
JPS5546768A
Cited
US4522907A
Cited
US4422749A
Cited
US4526130A
Cited
US4674439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |