公开(公告)号：WO9967097A3

公开(公告)日：2000-04-27

申请号：PCT/US9912689

申请日：1999-06-08

Applicant: KODAK POLYCHROME GRAPHICS LLC

Inventor： SHIMAZU KEN-ICHI ,  PATEL JAYANTI ,  SARAIYA SHASHIKANT ,  MERCHANT NISHITH ,  SAVARIAR-HAUCK CELIN ,  TIMPE HANS-JOACHIM ,  MCCULLOUGH CHRISTOPHER D

IPC: B41C1/055 ,  B41C1/10 ,  B41M5/36 ,  B41M5/40 ,  B41M5/42 ,  B41M5/44 ,  B41M5/46 ,  G03F7/00

CPC classification number: B41M5/42 ,  B41C1/1016 ,  B41C2201/04 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/14 ,  B41C2210/24 ,  B41C2210/26 ,  B41C2210/262 ,  B41C2210/264 ,  B41C2210/266 ,  B41M5/368 ,  B41M5/44 ,  B41M5/465

Abstract: A thermal lithographic printing plate, which can be imaged by thermal energy typically by imagewise exposure with an infrared emitting laser, a thermal printing head, etc., is made up of a hydrophilic substrate, and a composite layer structure composed of two layer coatings. Preferably, the first layer of the composite is composed of an aqueous developable polymer mixture containing a photothermal conversion material which is contiguous to the hydrophilic substrate. The second layer of the composite is composed of one or more non-aqueous soluble polymers which are soluble or dispersible in a solvent which does not dissolve the first layer. The plate is exposed with an infrared laser or a thermal print head, and upon aqueous development of the imaged plate, the exposed portions are removed exposing hydrophilic substrate surfaces receptive to conventional aqueous fountain solutions. The unexposed portions contain the ink-receptive image areas. Alternatively, the composite layer may be free of photothermal conversion material when thermal imaging is carried out using a thermal printing head.

Abstract translation: 可以通过热能成像通过用红外发射激光成像曝光，热打印头等来成像的热平版印刷版由亲水基材和由两层涂层组成的复合层结构构成。 优选地，复合材料的第一层由包含与亲水基底邻接的光热转换材料的水性可显影聚合物混合物组成。 复合材料的第二层由一种或多种可溶于或不溶于不溶于第一层的溶剂中的非水溶性聚合物组成。 该板用红外激光或热打印头曝光，并且在成像板的水性显影时，去除曝光部分，暴露接受常规水性喷泉溶液的亲水底物表面。 未曝光部分包含吸墨图像区域。 或者，当使用热敏打印头进行热成像时，复合层可以不含光热转换材料。