Claims
- 1. An alkali developable photosensitive resin composition comprising an admixture of:
- (a) an alkali-soluble binder resin,
- (b) a photosensitive substance selected from the group consisting of diazo resins, quinonediazide compounds, quinonediazide resins and photopolymerizable compositions, and
- (c) a dye;
- said binder resin (a) having an ampho-ionic group represented by the formula: ##STR18## wherein each R.sup.a is the same or different and respectively indicates H, CH.sub.3, C.sub.2 H.sub.6 or a C.sub.5-8 alkyl group, R.sup.1 is H or a C.sub.1-20 alkyl group which optionally has a substituent or a functional group in a chain, R is a phenylene group or a substituted or non-substituted C.sub.1-20 alkylene group and A is --COO-- or --SO.sub.3 ;
- and/or an ampho-ionic group represented by the formula: ##STR19## wherein each R.sup.2 is the same or different and respectively indicates a C.sub.1-10 alkyl group which optionally has a substituent or a functional group in a chain, and R and A are as defined above in a molecule and containing a resin having a total acid value of 5 to 150.
- 2. The alkali developable photosensitive resin composition according to claim 1, wherein said photosensitive substance (b) is a diazo resin.
- 3. The alkali developable photosensitive resin composition according to claim 1, wherein said photosensitive substance (b) is a photopolymerizable composition comprising a photopolymerization-initiator and a monomer having ethylenically unsaturated groups therein.
- 4. The alkali developable photosensitive resin composition according to claim 1, wherein said photosensitive substance (b) is a quinonediazide compound or resin.
- 5. The alkali developable photosensitive resin composition according to any of claim 1 which is used for an offset printing plate.
- 6. The alkali developable photosensitive resin composition according to claim 2 which is used for an offset printing plate.
- 7. The alkali developable photosensitive resin composition according to claim 3 which is used for an offset printing plate.
- 8. The alkali developable photosensitive resin composition according to claim 4 which is used for an offset printing plate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3-020919 |
Feb 1991 |
JPX |
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Parent Case Info
This application is a continuation of now abandoned application, Ser. No. 07/835,596, filed Feb. 14, 1992, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (2)
Number |
Date |
Country |
3516387 |
Jul 1985 |
DEX |
1603700 |
May 1978 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Patent Abstracts of Japan, vol. 6, No. 18 (P-100) (896) 2 Feb. 1982 & JP-A-56 142 528 (Mitsubishi Kasei Kogyo K K) 6 Nov. 1981 *Abstract*. |
Continuations (1)
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Number |
Date |
Country |
Parent |
835596 |
Feb 1992 |
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