Alkali developable photosensitive resin composition comprising a binder having betaine side groups

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.