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1. 发明专利

DE59608309D1 未知
公开(公告)号：DE59608309D1
公开(公告)日：2002-01-10
申请号：DE59608309
申请日：1996-09-24
申请人： BASF DRUCKSYSTEME GMBH
发明人： GOFFING DR , LOERZER DR , SANDIG DR , TOENNESSEN MARKUS
IPC分类号： G03F7/004 , B41C1/10 , B41N1/12 , G03F1/00 , G03F7/027 , G03F7/028 , G03F7/033 , G03F7/095 , G03F7/11
摘要： Prodn. of a photopolymer gravure printing plate from a laminate of a dimensionally stable base, opt. an adhesive layer, a layer (A) cross-linked by actinic radiation, opt. a release layer, a layer (B) IR-sensitive layer and a peelable protective film involves developing the selectively exposed plate in a developer (I) comprising water or water/alcohol mixts. The novel features are as follows. (1) Layer (A) consists of polymeric binder(s), which is soluble or dispersible in (I), compatible copolymerisable ethylenically unsatd. organic cpds., a photoinitiator (system) and opt. other ancillaries. (2) The release layer, if used, is O2-permeable, (3) Layer (B) has an optical density ≥ 2.5 in the actinic region and contains film-forming polymeric binder(s), which is soluble or dispersible in (I), and finely dispersed IR-absorbing substance(s), which has a high absorption in the 750-20000 nm wavelength range. After removing the protective film, layer (B) is structurised by laser ablation, then given a total exposure with actinic radiation, developed with (I) and dried in the usual way. Also claimed is the printing plate made in this way.

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