US4711833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder coating process for seamless substrates
Assignee: Xerox Corp
•
Filing: 1986-03-24
•
Granted: 1987-12-08
•
Expires: 2006-03-24
Abstract
Abstract A process for the fabrication of seamless substrates which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer blend; and (4) subsequently permitting the melted blend to cool. Thereafter, layered photoconductive imaging members can be prepared by the application, for example, of a ground plane, a photogenerating layer, and a charge transport layer.
Inventors
- 👤 T. Brian McAneney
- 👤 Rafik O. Loutfy
- 👤 Joseph Mammino
- 👤 Deborah J. Nichol-Landry
- 👤 Donald S. Sypula
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/006; B29C41/02; B29C41/22; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0525; G03G5/10; B29C41/08; B29K; B29K2105/00; B29K2105/25; B29K2105/251; B29L; B29L2023/00
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
46 words
A process for the fabrication of seamless substrates which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer; (4) cooling the melted polymer; and (5) subsequently separating the formed seamless substrate.
Claim 2
Dependent Claim
46 words
A process for the fabrication of seamless substrates which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer; (4) cooling the melted polymer; and (5) subsequently separating the formed seamless substrate.
Claim 3
Dependent Claim
22 words
A process in accordance with claim 1 wherein the substrate is in the form of a mandrel, a drum or a cylinder.
Claim 4
Dependent Claim
15 words
A process in accordance with claim 1 wherein the substrate is comprised of a metal.
Claim 5
Dependent Claim
27 words
A process in accordance with claim 1 wherein the substrate is comprised of a metal selected from the group consisting of copper, aluminum, nickel, and stainless steel.
Claim 6
Dependent Claim
16 words
A process in accordance with claim 1 wherein the substrate is comprised of a conductive polymer.
Claim 7
Dependent Claim
21 words
A process in accordance with claim 5 wherein the conductive polymer is comprised of polyethylene with a coating thereover of aluminum.
Claim 8
Dependent Claim
17 words
A process in accordance with claim 5 wherein the conductive polymer is polypropylene having dispersed therein aluminum.
Claim 9
Dependent Claim
15 words
A process in accordance with claim 1 wherein the release coating is a fluorocarbon polymer.
Claim 10
Dependent Claim
14 words
A process in accordance with claim 1 wherein the deposited polymer is a thermoplastic.
Claim 11
Dependent Claim
21 words
A process in accordance with claim 9 wherein the thermoplastic is selected from the group consisting of polyethylenes, polypropylenes, and polyamides.
Claim 12
Dependent Claim
27 words
A process in accordance with claim 1 wherein the polymer is a thermosetting resin selected from the group consisting of epoxies, polyester cured epoxies, and urethane acrylics.
Claim 13
Dependent Claim
13 words
A process in accordance with claim 8 wherein the fluorocarbon polymer is polytetrafluoroethylene.
Claim 14
Dependent Claim
14 words
A process in accordance with claim 1 wherein the polymer is melted by heating.
Claim 15
Dependent Claim
21 words
A process in accordance with claim 13 wherein the heating is accomplished at a temperature in excess of 50 degrees Centigrade.
Claim 16
Dependent Claim
14 words
A process in accordance with claim 1 wherein a conductive polymer mixture is selected.
Claim 17
Dependent Claim
20 words
A process in accordance with claim 15 wherein the mixture is comprised of a conductive component dispersed in a polymer.
Claim 18
Dependent Claim
23 words
A process in accordance with claim 16 wherein the conductive component is selected from the group consisting of carbon black and metallic materials.
Claim 19
Dependent Claim
13 words
A process in accordance with claim 17, wherein the metallic material is aluminum.
Claim 20
Dependent Claim
71 words
A process for the fabrication of layered seamless photoresponsive imaging members which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymers; (4) subsequently permitting the melted polymer to cool, followed by separating the seamless substrate formulated; (5) thereafter applying a ground plane layer thereto; and (6) depositing thereon a photogenerating layer and a charge transport layer.
Claim 21
Dependent Claim
71 words
A process for the fabrication of layered seamless photoresponsive imaging members which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymers; (4) subsequently permitting the melted polymer to cool, followed by separating the seamless substrate formulated; (5) thereafter applying a ground plane layer thereto; and (6) depositing thereon a photogenerating layer and a charge transport layer.
Claim 22
Dependent Claim
21 words
A process in accordance with claim 19 wherein the photogenerating layer is applied prior to deposition of the charge transport layer.
Claim 23
Dependent Claim
20 words
A process in accordance with claim 19 wherein the hole transport layer is applied to deposition of the photogenerating layer.
Claim 24
Dependent Claim
14 words
A process in accordance with claim 19 wherein the polymer is a thermoplastic resin.
Claim 25
Dependent Claim
14 words
A process in accordance with claim 19 wherein the polymer is a thermosetting plastic.
Claim 26
Dependent Claim
22 words
A process in accordance with claim 22 wherein the thermoplastic is selected from the group consisting of polyethylene, polypropylene, polyvinylchloride, and polyamide.
Claim 27
Dependent Claim
23 words
A process in accordance with claim 23 wherein the thermosetting resin is an epoxy, a polyester cured epoxy, or a urethane acrylic resin.
Claim 28
Dependent Claim
15 words
A process in accordance with claim 19 wherein the release coating is a fluorocarbon polymer.
Claim 29
Dependent Claim
12 words
A process in accordance with claim 26 wherein the polymer is polytetrafluoroethylene.
Claim 30
Dependent Claim
14 words
A process in accordance with claim 19 wherein there is selected a polymer mixture.
Claim 31
Dependent Claim
21 words
A process in accordance with claim 28 wherein the polymer mixture is comprised of a thermoplastic resin and a conductive component.
Claim 32
Dependent Claim
17 words
A process in accordance with claim 29 wherein the conductive component is carbon black or a metal.
Claim 33
Dependent Claim
18 words
A process in accordance with claim 19 wherein the polymer is applied by an electrostatic powder coating apparatus.
Claim 34
Dependent Claim
24 words
A process in accordance with claim 31 wherein the polymer which is positively charged is electrostatically attracted to the substrate which is negatively charged.
Claim 35
Dependent Claim
27 words
A process in accordance with claim 19 wherein the photogenerating layer is comprised of photogenerating pigments selected from the group consisting of inorganic pigments and organic pigments.
Claim 36
Dependent Claim
25 words
A process in accordance with claim 33 wherein the inorganic photogenerating pigments are selected from the group consisting of selenium, selenium alloys, and trigonal selenium.
Claim 37
Dependent Claim
26 words
A process in accordance with claim 33 wherein the organic pigments are selected from the group consisting of metal phthalocyanines, metal free phthalocyanines, and vanadyl phthalocyanine.
Claim 38
Dependent Claim
72 words
A process for the fabrication of layered seamless photoresponsive imaging members which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer; (4) subsequently permitting the melted polymer to cool; (5) separating the seamless substrate formed and thereafter applying a ground plane layer thereto; and (6) depositing thereon in sequence a photogenerating layer and a charge transport layer.
Claim 39
Dependent Claim
72 words
A process for the fabrication of layered seamless photoresponsive imaging members which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer; (4) subsequently permitting the melted polymer to cool; (5) separating the seamless substrate formed and thereafter applying a ground plane layer thereto; and (6) depositing thereon in sequence a photogenerating layer and a charge transport layer.
Claim 40
Dependent Claim
21 words
A process in accordance with claim 36 wherein the photogenerating layer is applied prior to deposition of the hole transport layer.
Claim 41
Dependent Claim
21 words
A process in accordance with claim 36 wherein the hole transport layer is applied prior to deposition of the photogenerating layer.
Claim 42
Dependent Claim
14 words
A process in accordance with claim 36 wherein the polymer is a thermoplastic resin.
Claim 43
Dependent Claim
14 words
A process in accordance with claim 36 wherein the polymer is a thermosetting resin.
Claim 44
Dependent Claim
22 words
A process in accordance with claim 39 wherein the thermoplastic is selected from the group consisting of polyethylene, polypropylene, polyvinylchloride, and polyamide.
Claim 45
Dependent Claim
23 words
A process in accordance with claim 40 wherein the thermosetting resin is an epoxy, a polyester cured epoxy, or a urethane acrylic resin.
Claim 46
Dependent Claim
14 words
A process in accordance with claim 36 wherein the release coating is a fluorocarbon.
Claim 47
Dependent Claim
13 words
A process in accordance with claim 43 wherein the release coating is polytetrafluoroethylene.
Claim 48
Dependent Claim
14 words
A process in accordance with claim 36 wherein there is selected a polymer mixture.
Claim 49
Dependent Claim
21 words
A process in accordance with claim 45 wherein the polymer mixture is comprised of a thermoplastic resin and a conductive component.
Claim 50
Dependent Claim
17 words
A process in accordance with claim 46 wherein the conductive component is carbon black or a metal.
Claim 51
Dependent Claim
18 words
A process in accordance with claim 36 wherein the polymer is applied by an electrostatic powder coating apparatus.
Claim 52
Dependent Claim
24 words
A process in accordance with claim 48 wherein the polymer which is positively charged is electrostatically attracted to the substrate which is negatively charged.
Claim 53
Dependent Claim
27 words
A process in accordance with claim 36 wherein the photogenerating layer is comprised of photogenerating pigments selected from the group consisting of inorganic pigments and organic pigments.
Claim 54
Dependent Claim
25 words
A process in accordance with claim 50 wherein the inorganic photogenerating pigments are selected from the group consisting of selenium, selenium alloys, and trigonal selenium.
Claim 55
Dependent Claim
26 words
A process in accordance with claim 50 wherein the organic pigments are selected from the group consisting of metal phthalocyanines, metal free phthalocyanines, and vanadyl phthalocyanine.
Claim 56
Dependent Claim
98 words
A process for the fabrication of layered seamless photoconductive imaging members which comprises (1) providing a supporting substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer or polymer blend; (3) melting the polymer; (4) subsequently permitting the melted polymer to cool, followed by separating the seamless substrate formulated; (5) thereafter applying a carbon black layer followed by a phenolic resin blocking layer, a photogenerating layer of trigonal selenium, and thereover an arylamine hole transport layer of the formula ##STR2## wherein X is selected from the group consisting of alkyl and halogens.
Claim 57
Dependent Claim
98 words
A process for the fabrication of layered seamless photoconductive imaging members which comprises (1) providing a supporting substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer or polymer blend; (3) melting the polymer; (4) subsequently permitting the melted polymer to cool, followed by separating the seamless substrate formulated; (5) thereafter applying a carbon black layer followed by a phenolic resin blocking layer, a photogenerating layer of trigonal selenium, and thereover an arylamine hole transport layer of the formula ##STR2## wherein X is selected from the group consisting of alkyl and halogens.
Claim 58
Dependent Claim
17 words
A process in accordance with claim 1 wherein the substrate includes as an integral part thereof passages.
Claim 59
Dependent Claim
15 words
A process in accordance with claim 54 wherein the passages are in the form holes.
Claim 60
Dependent Claim
14 words
A process in accordance with claim 54 wherein there is selected rectangular shaped passages.
Claim 61
Dependent Claim
23 words
A process in accordance with claim 54 wherein air is circulated through the passages thereby enabling separation of the substrate from the mandrel.
Claim 62
Dependent Claim
71 words
A process for the fabrication of layered seamless photoresponsive imaging members consisting essentially of (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer; (4) subsequently permitting the melted polymer to cool; (5) separating the seamless substrate formed; (6) thereafter applying a ground plane layer thereto; and (7) depositing thereon a photogenerating layer and a charge transport layer.
Claim 63
Dependent Claim
71 words
A process for the fabrication of layered seamless photoresponsive imaging members consisting essentially of (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer; (4) subsequently permitting the melted polymer to cool; (5) separating the seamless substrate formed; (6) thereafter applying a ground plane layer thereto; and (7) depositing thereon a photogenerating layer and a charge transport layer.
References Cited (Backward Citations)
US4143024A
Cited
US4111861A
Cited
US4169903A
Cited
US4337220A
Cited
US4481273A
Cited
US4481273B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |