US4504567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive lithographic printing plate
Assignee: Konica Minolta Inc
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Filing: 1984-08-09
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Granted: 1985-03-12
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Expires: 2004-08-09
Abstract
Abstract The invention provides a light-sensitive lithographic printing plate containing a light-sensitive composition which has a different degree of solubility in an exposed area of said printing plate than in an unexposed area of said printing plate when said printing plate is developed in a developing solution. This printing plate is produced by a process which comprises coating on a support a solution prepared by dissolving a light-sensitive composition containing a light-sensitive material and at least one fluorinated surfactant having Formula (I) in a quantity of between 0.005% by weight and 0.05% by weight based on the weight of said composition, in at least one solvent having (A) a solubility parameter of at least 8(cal/cm 3 )1/2, and (B) a boiling point within the range of from 100° to 200° C. Said Formula (I) is Rf-A-Y, wherein Rf is a partially or completely fluorinated hydrophobic alkyl moiety, A is a single bind or bivalent moiety and Y is a hydrophilic moiety.
Inventors
- 👤 Takeshi Yamamoto
- 👤 Kiyoshi Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:57
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/0166; G03F7/0048; G03F7/022; G03F7/0226; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107; Y10S430/109
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
164 words
A light-sensitive lithographic printing plate containing a light-sensitive composition which has a different degree of solubility in an exposed area of said printing plate than in an unexposed area of said printing plate when said printing plate is developed in an developing solution, said printing plate being produced by a process which comprises coating on a support having a metallic surface a solution prepared by dissolving a light-sensitive composition containing a light-sensitive material and at least one fluorinated surfactant having Formula (I) in a quantity of between 0.005% by weight and 0.05% by weight based on the weight of said composition, in at least one solvent having (A) a solubility parameter of at least 8(cal/cm 3 ) 1/2 , and (B) a boiling point within the range of from 100° to 200° C., said Formula (I) being Rf--A--Y, wherein Rf is a partially or completely fluorinated hydrophobic alkyl moiety, A is a single bind or a bivalent moiety and Y is a hydrophilic moiety.
Claim 2
Dependent Claim
164 words
A light-sensitive lithographic printing plate containing a light-sensitive composition which has a different degree of solubility in an exposed area of said printing plate than in an unexposed area of said printing plate when said printing plate is developed in an developing solution, said printing plate being produced by a process which comprises coating on a support having a metallic surface a solution prepared by dissolving a light-sensitive composition containing a light-sensitive material and at least one fluorinated surfactant having Formula (I) in a quantity of between 0.005% by weight and 0.05% by weight based on the weight of said composition, in at least one solvent having (A) a solubility parameter of at least 8(cal/cm 3 ) 1/2 , and (B) a boiling point within the range of from 100° to 200° C., said Formula (I) being Rf--A--Y, wherein Rf is a partially or completely fluorinated hydrophobic alkyl moiety, A is a single bind or a bivalent moiety and Y is a hydrophilic moiety.
Claim 3
Dependent Claim
67 words
The light-sensitive lithographic printing plate of claim 1, wherein at least one of said solvents is represented by Formula (II); ##STR6## wherein R 1 is selected from the group consisting of a hydrogen atom, an acetyl group and a propionyl group; and R 2 is selected from the group consisting of a hydrogen atom, a methyl group, an ethyl group, a butyl group and a phenyl group.
Claim 4
Dependent Claim
24 words
The light-sensitive lithographic printing plate of claim 2, wherein at least 50% by weight of said solvent is a solvent represented by Formula (II).
Claim 5
Dependent Claim
25 words
The light-sensitive lithographic printing plate of claim 1, wherein Rf is a partially or completely fluorinated alkyl group having from 2 to 10 carbon atoms.
Claim 6
Dependent Claim
23 words
The light-sensitive lithographic printing plate of claim 2, wherein Rf is a completely fluorinated alkyl group having from 6 to 9 carbon atoms.
Claim 7
Dependent Claim
23 words
The light-sensitive lithographic printing plate of claim 3, wherein Rf is a completely fluorinated alkyl group having from 6 to 9 carbon atoms.
Claim 8
Dependent Claim
23 words
The light-sensitive lithographic printing plate of claim 4, wherein Rf is a completely fluorinated alkyl group having from 6 to 9 carbon atoms.
Claim 9
Dependent Claim
44 words
The light-sensitive lithographic printing plate of claim 1, wherein A is a single bond or at least one group selected from the group consisting of a carbonyl group, a sulfonyl group, an amino group, an arylene group, an alkylene group, and an oxygen group.
Claim 10
Dependent Claim
30 words
The light-sensitive lithographic printing plate of claim 1, wherein Y is selected from the group consisting of an anionic group, a cationic group, a betaine group and a nonionic group.
Claim 11
Dependent Claim
59 words
The light-sensitive lithographic printing plate of claim 1, wherein the light-sensitive material is selected from the group consisting of a quinonediazide light-sensitive material a diazo type light-sensitive material and a light-sensitive polymer type material containing a ##STR7## group as part of the main chain, or a side chain, or both the main chain and side chain of said polymer.
Claim 12
Dependent Claim
23 words
The light-sensitive lithographic printing plate of claim 8, wherein A is selected from the group consisting of sulfonylamino, carbonylamino, sulfonylaminoalkyl, carbonylaminoalkyl, and sulfonylaminoalkylaryl.
Claim 13
Dependent Claim
16 words
The light-sensitive lithographic printing plate of claim 1, wherein said solution further comprises a non-fluorinated surfactant.
Claim 14
Dependent Claim
30 words
The light-sensitive lithographic printing plate of claim 1, wherein said solvent is selected from the group consisting of cyclohexanone, ethyl cellosolve, methyl cellosolve, methyl cellosolve acetate and ethyl cellosolve acetate.
Claim 15
Dependent Claim
32 words
The light-sensitive lithographic printing plate of claim 1, wherein the solution is coated on said support in an amount sufficient to provide a dry coating of 0.1 to 5 g/m 2 .
Claim 16
Dependent Claim
24 words
The light-sensitive lithographic printing plate of claim 14, wherein the dry coating is present in an amount of 0.5 to 3.5 g/m 2 .
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) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |