US5266431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic imaging members
Assignee: Xerox Corp
•
Filing: 1991-12-31
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Granted: 1993-11-30
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Expires: 2011-12-31
Abstract
Abstract An electrographic imaging member is disclosed which has a conductive substrate, a charge blocking layer, and an imaging layer comprising an elastomeric fluoropolymer.
Inventors
- 👤 Joseph Mammino
- 👤 Dennis Abramsohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:51
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/0208; G03G5/10; G03G5/102; G03G5/14; G03G5/142
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
33 words
An electrographic imaging member comprising a conductive substrate, a charge blocking layer overlying the substrate, and a dielectric imaging layer overlying the blocking layer, wherein the dielectric imaging layer comprises and elastomeric fluoropolymer.
Claim 2
Dependent Claim
33 words
An electrographic imaging member comprising a conductive substrate, a charge blocking layer overlying the substrate, and a dielectric imaging layer overlying the blocking layer, wherein the dielectric imaging layer comprises and elastomeric fluoropolymer.
Claim 3
Dependent Claim
42 words
An electrographic imaging member according to claim 1 wherein the conductive substrate is made of a material selected from the group consisting of metalized polyimides, metalized poly(amideimides), metalized polyetherether keytones, metalized polyphenylene sulfides, conductive elastomeric fluoropolymers, stainless steel, nickel, aluminum, and copper.
Claim 4
Dependent Claim
23 words
An electrographic imaging member according to claim 1 wherein the conductive substrate is made of a polymer material filled with a conductive material.
Claim 5
Dependent Claim
22 words
An electrographic imaging member according to claim 3 wherein the conductive substrate is made of a polyimide filled with carbon black particles.
Claim 6
Dependent Claim
27 words
An electrographic imaging member according to claim 1 wherein the blocking layer is made of a material selected from the group consisting of epoxies, polyimides and poly(amideimides).
Claim 7
Dependent Claim
35 words
An electrographic imaging member according to claim 1 wherein the elastomeric fluoropolymer is a copolymer or terpolymer of one or more materials selected from the group consisting of vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, chlorotrifluoroethylene and propylene.
Claim 8
Dependent Claim
20 words
An electrographic imaging member according to claim 6 wherein the elastomeric fluoropolymer is a copolymer of vinylidene fluoride and hexafluoropropylene.
Claim 9
Dependent Claim
21 words
An electrographic imaging member according to claim 6 wherein the elastomeric fluoropolymer is a terpolymer of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene.
Claim 10
Dependent Claim
14 words
An electrographic imaging member according to claim 2 wherein the substrate is titanized polyimide.
Claim 11
Dependent Claim
14 words
An electrographic imaging member according to claim 2 wherein the substrate is aluminized polyimide.
Claim 12
Dependent Claim
16 words
An electrographic imaging member according to claim 5 wherein the blocking layer is an epoxy compound.
Claim 13
Dependent Claim
14 words
An electrographic imaging member according to claim 2 wherein the substrate is stainless steel.
Claim 14
Dependent Claim
16 words
An electrographic imaging member according to claim 2 wherein the substrate is a conductive elastomeric fluoropolymer.
Claim 15
Dependent Claim
29 words
An electrographic imaging member according to claim 1 wherein the imaging member is in a form selected from the group consisting of a drum, a belt and a sheet.
Claim 16
Dependent Claim
40 words
An electrographic imaging process comprising: (a) providing an electrographic imaging member according to claim 1; (b) forming a latent image on the imaging member; (c) developing the latent image; and (d) transferring the developed image to an image receiving substrate.
Claim 17
Dependent Claim
16 words
A process according to claim 15 wherein the developed image is transferred by heat and pressure.
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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) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |