USH1210H
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface hardening of reprographic machine components by coating or treatment processes
Assignee: Xerox Corp
•
Filing: 1990-04-04
•
Granted: 1993-07-06
•
Expires: 2010-04-04
Abstract
Abstract A process for maximizing wear resistance of electrophotographic components which comprises coating the components with a diamond-like amorphous carbon material, a titanium compound, or mixtures thereof.
Inventors
- 👤 Frank Jansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:56
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/30; C23C16/32; C23C16/34; G03G15/60; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00371; G03G2215/00535; G03G2215/00675
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
18 words
A process for maximizing wear resistance of electrophotographic components which comprises coating the components with a titanium compound.
Claim 2
Dependent Claim
18 words
A process for maximizing wear resistance of electrophotographic components which comprises coating the components with a titanium compound.
Claim 3
Dependent Claim
17 words
A process in accordance with claim 1 wherein the titanium compound is titanium nitride, or titanium carbide.
Claim 4
Dependent Claim
22 words
A process in accordance with claim 1 wherein the thickness of the coating is from 100 Angstroms to 100 microns in thickness.
Claim 5
Dependent Claim
23 words
A process in accordance with claim 1 wherein the coating is of a thickness of from about 10 nanometers to about 10 micrometers.
Claim 6
Dependent Claim
16 words
A process in accordance with claim 1 wherein the electrophotographic component is a paper guidance device.
Claim 7
Dependent Claim
27 words
A process for avoiding wear or maximizing abrasion resistance of paper guide components present in an electrophotographic apparatus which comprises coating the components with a titanium compound.
Claim 8
Dependent Claim
27 words
A process for avoiding wear or maximizing abrasion resistance of paper guide components present in an electrophotographic apparatus which comprises coating the components with a titanium compound.
Claim 9
Dependent Claim
23 words
A process in accordance with claim 6 wherein the coating is of a thickness of from about 10 nanometers to about 10 micrometers.
Claim 10
Dependent Claim
16 words
A process in accordance with claim 6 wherein the electrophotographic component is a paper guidance device.
Claim 11
Dependent Claim
27 words
A process for avoiding wear or maximizing abrasion resistance of registration edge guides present in an electrophotographic apparatus which comprises coating the guides with a titanium compound.
Claim 12
Dependent Claim
27 words
A process for avoiding wear or maximizing abrasion resistance of registration edge guides present in an electrophotographic apparatus which comprises coating the guides with a titanium compound.
Claim 13
Dependent Claim
22 words
A process in accordance with claim 9 wherein the thickness of the coating is from 100 Angstroms to 100 microns in thickness.
Claim 14
Dependent Claim
31 words
A process for avoiding wear or maximizing abrasion resistance of paper guide components present in an electrophotographic apparatus which comprises chemically modifying the surface of the component by nitriding or carbiding.
Claim 15
Dependent Claim
31 words
A process for avoiding wear or maximizing abrasion resistance of paper guide components present in an electrophotographic apparatus which comprises chemically modifying the surface of the component by nitriding or carbiding.
Claim 16
Dependent Claim
16 words
A process in accordance with claim 11 wherein the nitriding is accomplished with nitrogen or ammonia.
Claim 17
Dependent Claim
17 words
A process in accordance with claim 11 wherein the carbiding is accomplished with a carbon containing gas.
Claim 18
Dependent Claim
18 words
A process for improving wear resistance of electrophotographic components which comprises coating the components with a titanium compound.
Claim 19
Dependent Claim
18 words
A process for improving wear resistance of electrophotographic components which comprises coating the components with a titanium compound.
References Cited (Backward Citations)
US3959557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |