US4886731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer photopolymeric printing plates with photoreactive diazo compounds and photopolymerizable compositions
Assignee: ANITEC PRINTING PLATES Inc
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Filing: 1989-05-10
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Granted: 1989-12-12
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Expires: 2009-05-10
Abstract
Abstract Photopolymeric printing plates wherein an electrochemically etched, anodized and silicated aluminum plate has a plurality of coatings applied thereon and wherein at least one of the coatings include a solvent soluble diazo therein.
Inventors
- 👤 Maria T. Sypek
- 👤 Thomas P. Rorke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:11
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/095; G03F7/0955
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A printing plate comprising an aluminum substrate having a silicate coating on at least one surface thereof, said silicate coated surface having greater than two additional coating layers applied thereto, wherein the first of said additional layers comprises a water-soluble photoreactive lithographic diazo, the second of said additional layers comprises a solvent-soluble photoreactive lithographic diazo and a tri-functional acrylate monomer and the third of said layers comprises a photoinitiator, an acrylate oligomer, said tri-functional acrylate monomer and said solvent-soluble lithographic diazo, wherein a greater amount of said tri-functional acrylate monomer is in said second layer relative to said third layer, and wherein said tri-functional acrylate monomer interacts with said photoinitiator and acrylate oligomer to polymerize photo exposed areas of said plate.
Claim 2
Dependent Claim
121 words
A printing plate comprising an aluminum substrate having a silicate coating on at least one surface thereof, said silicate coated surface having greater than two additional coating layers applied thereto, wherein the first of said additional layers comprises a water-soluble photoreactive lithographic diazo, the second of said additional layers comprises a solvent-soluble photoreactive lithographic diazo and a tri-functional acrylate monomer and the third of said layers comprises a photoinitiator, an acrylate oligomer, said tri-functional acrylate monomer and said solvent-soluble lithographic diazo, wherein a greater amount of said tri-functional acrylate monomer is in said second layer relative to said third layer, and wherein said tri-functional acrylate monomer interacts with said photoinitiator and acrylate oligomer to polymerize photo exposed areas of said plate.
Claim 3
Dependent Claim
23 words
The printing plate of claim 1 wherein said second layer further comprises said photoinitiator and said acrylate oligomer present in said third layer.
Claim 4
Dependent Claim
28 words
The printing plate of claim 2 wherein the amount of said photoinitiator in said third layer is about triple the amount of said photoinitiator in said second layer.
Claim 5
Dependent Claim
11 words
The printing plate of claim 1 wherein said substrate is grained.
Claim 6
Dependent Claim
13 words
The printing plate of claim 1 wherein said substrate is grained and etched.
Claim 7
Dependent Claim
13 words
The printing plate of claim 1 wherein said substrate is grained and anodized.
Claim 8
Dependent Claim
14 words
The printing plate of claim 1 wherein said substrate is grained, etched and anodized.
Claim 9
Dependent Claim
19 words
The printing plate of claim 1 wherein said third layer further comprises a pigment dispersed in a photopolymerizable binder.
Claim 10
Dependent Claim
27 words
The printing plate of claim 1 wherein said solvent-soluble lithographic diazo comprises the reaction product of the water soluble diazo of said first layer and p-chlorobenezenesulfonic acid.
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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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |