Patent US3589290A successfully refreshed from Google Patents.
US3589290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief imaging plates made by repetitive xerographic processes
Assignee: Xerox Corp
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Filing: 1966-05-20
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Granted: 1971-06-29
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Expires: 1986-05-20
Abstract
Abstract A method of preparing a relief printing master is disclosed whereby upon repeating in sequence and registration the steps of electrostatic imaging and development the necessary relief image may be established which may be used in a corresponding printing process.
Inventors
- 👤 Lewis E Walkup
- 👤 Donald L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:45
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/32
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
88 words
A process for preparing a relief printing master consisting essentially of: a. forming an electrostatic latent image on the surface of an electrophotographic plate; b. developing said latent image with electroscopic marking particles to form an image pattern thereon comprising areas of image body and areas of background; c. fixing said developed image; and d. thereafter in at least one successive cycle reforming said electrostatic latent image on the surface of said plate, redeveloping said latent image and fixing said developed image to form said relief printing plate.
Claim 2
Dependent Claim
88 words
A process for preparing a relief printing master consisting essentially of: a. forming an electrostatic latent image on the surface of an electrophotographic plate; b. developing said latent image with electroscopic marking particles to form an image pattern thereon comprising areas of image body and areas of background; c. fixing said developed image; and d. thereafter in at least one successive cycle reforming said electrostatic latent image on the surface of said plate, redeveloping said latent image and fixing said developed image to form said relief printing plate.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said electrophotographic plate comprises a photoconductive layer comprising selenium.
Claim 4
Dependent Claim
37 words
The process of claim 1 wherein said electrophotographic plate comprises a photoconductive layer comprising an inorganic photoconductor selected from the group consisting of zinc oxide, zinc sulfide, zinc cadmium sulfide, cadmium selenide, cadmium sulfide and mixtures thereof.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein said electrophotographic plate comprises a photoconductive layer comprising an organic photoconductor.
Claim 6
Dependent Claim
11 words
The process of claim 4 wherein said organic photoconductor comprises polyvinylcarbazole.
Claim 7
Independent Claim
162 words
A method for the production of a relief printing master which comprises forming an electrostatic latent image on the surface of a photoconductive insulating member, depositing electroscopic marking particles on said member in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image body and areas of background, said areas of image body comprising loose electroscopic marking particles adhering to said electrostatic latent image, transferring said image body to an image support member yielding an electrophotographic print on said image support member, fixing said transferred image to said support member and thereafter in at least one successive cycle reforming said electrostatic latent image on the surface of said photoconductive insulating member, depositing additional electroscopic marking particles on said member in conformity with said latent image to reform said image pattern thereon, transferring marking particles in registration to the surface of the preceding transferred image body and fixing said transferred image to form said relief printing master.
Claim 8
Independent Claim
162 words
A method for the production of a relief printing master which comprises forming an electrostatic latent image on the surface of a photoconductive insulating member, depositing electroscopic marking particles on said member in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image body and areas of background, said areas of image body comprising loose electroscopic marking particles adhering to said electrostatic latent image, transferring said image body to an image support member yielding an electrophotographic print on said image support member, fixing said transferred image to said support member and thereafter in at least one successive cycle reforming said electrostatic latent image on the surface of said photoconductive insulating member, depositing additional electroscopic marking particles on said member in conformity with said latent image to reform said image pattern thereon, transferring marking particles in registration to the surface of the preceding transferred image body and fixing said transferred image to form said relief printing master.
Claim 9
Dependent Claim
18 words
The process as defined in Claim 6 wherein said photoconductive insulating member comprises a photoconductive layer comprising selenium.
Claim 10
Dependent Claim
40 words
The process as defined in claim 6 wherein said photoconductive insulating member comprises a photoconductive layer comprising an inorganic photoconductor selected from the group consisting of zinc oxide, zinc sulfide, zinc cadmium sulfide, cadmium selenide, cadmium sulfide, and mixtures thereof.
Claim 11
Dependent Claim
20 words
The process as defined in claim 6 wherein said photoconductive insulating member comprises a photoconductive layer comprising an organic photoconductor.
Claim 12
Dependent Claim
13 words
The process as defined in claim 9 wherein said organic photoconductor comprises polyvinylcarbazole.
Claim 13
Dependent Claim
163 words
A method for producing a relief printing master which comprises forming an electrostatic latent image on the surface of a photconductive insulating member, depositing electroscopic marking particles on said member in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image body and areas of background, said areas of image body comprising loose electroscopic marking particles adhering to said electrostatic latent image, transferring said image body to an image support member yielding an electrophotographic print on said image support member, fixing said transferred image to said support member and thereafter in at least one successive cycle reforming said electrostatic latent image on the surface of said image support member, depositing additional electroscopic marking particles on said member in conforMity with said latent image to reform said image pattern thereon and fixing said reformed image to form said relief printing master. 12. The process as defined in claim 11 wherein said image support member comprises an aluminum substrate.
Claim 14
Dependent Claim
171 words
A process for preparing a relief printing master from a zinc oxide xerographic plate said process comprising charging said zinc oxide plate, selectively exposing said charged plate to a light source so as to produce an electrostatic latent image thereon, depositing electroscopic marking particles comprising polystyrene on said plate in conformity with said electrostatic latent image to form an image pattern thereon, transferring said electroscopic marking particles in imagewise configuration to the surface of an aluminum image support member, heating said image support member so as to fuse said transferred particles to the surface of said image support member and thereafter in at least one successive cycle recharging said zinc oxide xerographic plate, reexposing said charged plate thereby reproducing said electrostatic latent image, depositing additional electroscopic marking particles in conformity with said reproduced electrostatic latent image, transferring said deposited particles in registration to the surface of the image-bearing aluminum substrate, and fusing said transferred electroscopic marking particles to the surface of the preceding fused image to form said relief printing master.
Claim 15
Dependent Claim
171 words
A process for preparing a relief printing master from a zinc oxide xerographic plate said process comprising charging said zinc oxide plate, selectively exposing said charged plate to a light source so as to produce an electrostatic latent image thereon, depositing electroscopic marking particles comprising polystyrene on said plate in conformity with said electrostatic latent image to form an image pattern thereon, transferring said electroscopic marking particles in imagewise configuration to the surface of an aluminum image support member, heating said image support member so as to fuse said transferred particles to the surface of said image support member and thereafter in at least one successive cycle recharging said zinc oxide xerographic plate, reexposing said charged plate thereby reproducing said electrostatic latent image, depositing additional electroscopic marking particles in conformity with said reproduced electrostatic latent image, transferring said deposited particles in registration to the surface of the image-bearing aluminum substrate, and fusing said transferred electroscopic marking particles to the surface of the preceding fused image to form said relief printing master.
Claim 16
Independent Claim
127 words
A method of making multiple copies from a relief printing master which comprises: a. forming an electrostatic latent image on the surface of a xerographic plate; b. developing said latent image with electroscopic marking particles; c. fixing said marking particles in imagewise configuration; d. in at least one successive cycle, repeating the foregoing steps in their given sequence in registration on the surface of the preceding fixed image so as to form a raised relief image on the surface of said xerographic plate; e. contacting said raised relief image with a printing ink; f. contacting said inked relief image with a copy sheet so as to transfer an imprint of said image thereto; and g. repeating the inking and transfer steps until the desired copies are produced.
Claim 17
Independent Claim
127 words
A method of making multiple copies from a relief printing master which comprises: a. forming an electrostatic latent image on the surface of a xerographic plate; b. developing said latent image with electroscopic marking particles; c. fixing said marking particles in imagewise configuration; d. in at least one successive cycle, repeating the foregoing steps in their given sequence in registration on the surface of the preceding fixed image so as to form a raised relief image on the surface of said xerographic plate; e. contacting said raised relief image with a printing ink; f. contacting said inked relief image with a copy sheet so as to transfer an imprint of said image thereto; and g. repeating the inking and transfer steps until the desired copies are produced.
Claim 18
Independent Claim
159 words
A method of making multiple copies from a xerographic image which comprises: a. forming an electrostatic latent image on the surface of xerographic plate; b. depositing on the surface of said plate electroscopic marking particles in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image body and areas of background; c. transferring said electroscopic marking particles in imagewise configuration to the surface of an image support member; d. fixing said transferred particles to said image support member; e. in at least one successive cycle, repeating the foregoing steps in heir given sequence in registration to form a relief image on the surface of said image support member; f. contacting said relief image with a printing ink; g. contacting said inked relief image with a copy sheet so as to transfer an imprint of said image to said copy sheet; and, h. repeating steps (f) and (g) until the desired copies are produced.
Claim 19
Independent Claim
159 words
A method of making multiple copies from a xerographic image which comprises: a. forming an electrostatic latent image on the surface of xerographic plate; b. depositing on the surface of said plate electroscopic marking particles in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image body and areas of background; c. transferring said electroscopic marking particles in imagewise configuration to the surface of an image support member; d. fixing said transferred particles to said image support member; e. in at least one successive cycle, repeating the foregoing steps in heir given sequence in registration to form a relief image on the surface of said image support member; f. contacting said relief image with a printing ink; g. contacting said inked relief image with a copy sheet so as to transfer an imprint of said image to said copy sheet; and, h. repeating steps (f) and (g) until the desired copies are produced.
Claim 20
Independent Claim
185 words
A method of making multiple copies from a relief printing master which comprises: a. forming an electrostatic latent image on the surface of a xerographic plate; b. depositing on the surface of said plate electroscopic marking particles in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image bodies and areas of background; c. transferring said electroscopic marking particles in imagewise configuration to the surface of an image support member; d. fixing said transferred particles to sad image support member; e. in at least one successive cycle, reforming an electrostatic latent image on the surface of said image support member in cOnformity with the preceding fixed imaged, developing said electrostatic latent image with electroscopic marking particles, and fixing said developed image, to form a relief image on the surface of said image support member; f. contacting said relief image with a printing ink; g. contacting said ink relief image with a copy sheet so as to transfer an imprint of said image to said copy sheet; and, h. repeating steps (f) and (g) until the desired copies are produced.
Claim 21
Independent Claim
185 words
A method of making multiple copies from a relief printing master which comprises: a. forming an electrostatic latent image on the surface of a xerographic plate; b. depositing on the surface of said plate electroscopic marking particles in conformity with said electrostatic latent image to form an image pattern thereon comprising areas of image bodies and areas of background; c. transferring said electroscopic marking particles in imagewise configuration to the surface of an image support member; d. fixing said transferred particles to sad image support member; e. in at least one successive cycle, reforming an electrostatic latent image on the surface of said image support member in cOnformity with the preceding fixed imaged, developing said electrostatic latent image with electroscopic marking particles, and fixing said developed image, to form a relief image on the surface of said image support member; f. contacting said relief image with a printing ink; g. contacting said ink relief image with a copy sheet so as to transfer an imprint of said image to said copy sheet; and, h. repeating steps (f) and (g) until the desired copies are produced.
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |