申请人:Fuji Photo Film Co., Ltd.
公开号:US05733707A1
公开(公告)日:1998-03-31
The present invention provides a negative-working image recording material which can be used as a lithographic printing plate for so-called direct plate making process comprising directly making plate from digital signal such as computer signal. A novel negative-working image recording material is provided, comprising a high-molecular compound having a weight-average molecular weight of from 5,000 to 400,000 and a repeating unit represented by the following general formula (I), and a substance which absorbs light to generate heat: ##STR1## wherein R.sup.1 represents a hydrogen atom, a halogen atom, a cyano group (--CN) or an alkyl group; R.sup.2 represents an alkyl group, an aralkyl group or an aromatic ring group; L.sup.1 represents a single bond or a phenylene group; L.sup.2 represents an alkylene group, an alkenylene group or an aromatic ring group; X represents a single bond, --O--, --OCO--, --COO--, --CONR.sup.3 --, --CONR.sup.3 CO--, --CONR.sup.3 SO.sub.2 --, --NR.sup.3 --, --NR.sup.3 CO--, --NR.sup.3 SO.sub.2 --, --SO.sub.3 --, --SO.sub.2 NR.sup.3 -- or --SO.sub.2 NR.sup.3 CO--; and R.sup.3 represents a hydrogen atom, an alkyl group, an aralkyl group or an aromatic ring group. The negative-working image recording material according to the present invention can provide a lithographic printing plate which can be exposed to infrared laser to undergo heat mode writing and exhibits a high sensitivity and developability when developed with an aqueous developer.
本发明提供了一种负片式图像记录材料,可用作所谓的直接制版工艺的平版印刷版,其中直接从数字信号(如计算机信号)制作版。提供了一种新的负片式图像记录材料,包括具有重量平均分子量在5,000至400,000之间且由以下通式(I)表示的重复单元的高分子化合物以及吸收光线以产生热量的物质: ##STR1## 其中R.sup.1表示氢原子、卤素原子、氰基(--CN)或烷基;R.sup.2表示烷基、芳基烷基或芳环基;L.sup.1表示单键或苯撑基;L.sup.2表示烷撑基、烯撑基或芳环基;X表示单键、--O--、--OCO--、--COO--、--CONR.sup.3--、--CONR.sup.3 CO--、--CONR.sup.3 SO.sub.2--、--NR.sup.3--、--NR.sup.3 CO--、--NR.sup.3 SO.sub.2--、--SO.sub.3--、--SO.sub.2 NR.sup.3--或--SO.sub.2 NR.sup.3 CO--;而R.sup.3表示氢原子、烷基、芳基烷基或芳环基。根据本发明的负片式图像记录材料可以提供一种可暴露于红外激光以进行热模式写入并在用水性显影剂显影时表现出高灵敏度和可显影性的平版印刷版。