Patent ID: 6117613
Filing Date: 2000-09-12
Classification: B41C

Abstract:
A positive photosensitive composition for use with an infrared laser comprising:an alkali aqueous solution soluble polymer compound (A) comprising one or more alkali aqueous solution soluble polymer compounds having at least one group selected from the following functional groups (a-1), (a-2) and (a-3), a phenolic hydroxide group (a-1) a sulfonamide group (a-2) an active imide group (a-3)  a compound (F) which is compatible with the alkali aqueous solution soluble polymer compound and comprising a compound represented by following formula (D):R.sup.1 CO--X--R.sup.2 (D)wherein X represents O, S or NR.sup.3 ; R.sup.1 represents an alkyl group or alkenyl group which has 6-32 carbon atoms; R.sup.2 and R.sup.3 represent a hydrogen atom, or an alkyl group or alkenyl group or aryl group each of which has 1-18 carbon atoms, thereby lowering the solubility of the alkali aqueous solution soluble polymer compound into an alkali aqueous solution, the effect of lowering the solubility being reduced by heating, the compound (F) further having the properties of generating heat upon absorption of light, having a light absorbing band outside the range of 350 nm to 500 nm and being other than an onium salt or a quinonediazide compound,wherein the thermal decomposition temperature of each of compound (A) and compound (F) is higher than 150.degree. C.