US3892180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light activating imaging process
Assignee: Xerox Corp
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Filing: 1974-05-29
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Granted: 1975-07-01
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Expires: 1994-05-29
Abstract
Abstract There is disclosed an imaging system whereby alkyl esters of polyvinylaryl sulfonic acids are selectively insolubilized upon exposure to actinic radiation.
Inventors
- 👤 Alan R Monahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
28 words
A PRINTING MEMBER COMPRISING A SUPPORT SUBSTRATE HAVING FIXED TO THE SURFACE THEREOF IN INAGEWISE CONFIGURATION PHOTOINSOLUBLE ALKYL ESTERS OF POLYVINYL SULFONIC ACIDS, SAID ESTERS SATISFYING THE FORMULA:
Claim 2
Dependent Claim
28 words
A PRINTING MEMBER COMPRISING A SUPPORT SUBSTRATE HAVING FIXED TO THE SURFACE THEREOF IN INAGEWISE CONFIGURATION PHOTOINSOLUBLE ALKYL ESTERS OF POLYVINYL SULFONIC ACIDS, SAID ESTERS SATISFYING THE FORMULA:
Claim 3
Dependent Claim
41 words
The printing member as disclosed in claim 1 wherein said alkyl esters of polyvinylaryl sulfonic acids are selected from at least one member of the group consisting of the methyl ester of poly(1-vinylbenzene-4-sulfonic acid) and the ethyl ester of poly(1-vinylbenzene-4-sulfonic acid).
Claim 4
Independent Claim
70 words
A METHOD OF PRINTING FROM A CONTACT PRINTING MEMBER WHICH COMPRISES: A. COATING THE SURFACE OF A SUPPORT SUBSTRATE WITH ALKYL ESTERS OF POLYVINYLARYL SULFONIC ACIDS, B. SELECTIVELY EXPOSING SAID COMPOSITION TO ACTINIC RADIATION C. DEVELOPING SAID EXPOSED POLYMER BY DISSOLVING AWAY THE UNEXPOSED PORTION OF SAID POLYMER, D. APPLYING TO THE IMAGED SURFACE OF SAID MEMBER A PRINTING INK, AND E. CONTACTING SAID INKED IMAGE WITH A RECEIVER SHEET.
Claim 5
Independent Claim
70 words
A METHOD OF PRINTING FROM A CONTACT PRINTING MEMBER WHICH COMPRISES: A. COATING THE SURFACE OF A SUPPORT SUBSTRATE WITH ALKYL ESTERS OF POLYVINYLARYL SULFONIC ACIDS, B. SELECTIVELY EXPOSING SAID COMPOSITION TO ACTINIC RADIATION C. DEVELOPING SAID EXPOSED POLYMER BY DISSOLVING AWAY THE UNEXPOSED PORTION OF SAID POLYMER, D. APPLYING TO THE IMAGED SURFACE OF SAID MEMBER A PRINTING INK, AND E. CONTACTING SAID INKED IMAGE WITH A RECEIVER SHEET.
Claim 6
Dependent Claim
18 words
The method as disclosed in claim 3 wherein said inking and printing steps are repeated at least once.
Claim 7
Dependent Claim
40 words
The method as disclosed in claim 3 wherein said alkyl esters of polyvinylaryl sulfonic acids are selected from at least one member of the group consisting of the methyl ester of poly(1-vinylbenzene-4-sulfonic acid) and the ethyl ester of poly(1-vinylbenzene-4-sulfonic acid).
Claim 8
Independent Claim
109 words
A method of making multiple copies from a contact printing member which comprises: a. coating the surface of a support substrate with a layer of alkyl esters of polyvinylaryl sulfonic acids; b. selectively exposing said polymer to actinic radiation so as to insolubilize said exposed areas; c. developing said exposed member with a solvent which will remove the unexposed portions of said polymer from said member; d. applying a fountain solution to the surface of said imaged member; e. applying a lithographic ink to the surface of said wetted member; and f. contacting said inked member with the surface of a transfer sheet by way of an offset blanket.
Claim 9
Independent Claim
109 words
A method of making multiple copies from a contact printing member which comprises: a. coating the surface of a support substrate with a layer of alkyl esters of polyvinylaryl sulfonic acids; b. selectively exposing said polymer to actinic radiation so as to insolubilize said exposed areas; c. developing said exposed member with a solvent which will remove the unexposed portions of said polymer from said member; d. applying a fountain solution to the surface of said imaged member; e. applying a lithographic ink to the surface of said wetted member; and f. contacting said inked member with the surface of a transfer sheet by way of an offset blanket.
Claim 10
Dependent Claim
18 words
The method as disclosed in claim 6 wherein said inking and transfer steps are repeated at least once.
Claim 11
Dependent Claim
40 words
The method as disclosed in claim 6 wherein said alkyl esters of polyvinylaryl sulfonic acids are selected from at least one member of the group consisting of the methyl ester of poly(1-vinylbenzene-4-sulfonic acid) and the ethyl ester of poly(1-vinylbenzene-4-sulfonic acid).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |