公开(公告)号：EP0985167A1

公开(公告)日：2000-03-15

申请号：EP98918887.5

申请日：1998-04-30

申请人： Kodak Polychrome Graphics LLC

发明人： MILLER, Gary, A. ,  FELKER, Melanie, A.

IPC分类号： G03F7/32

CPC分类号： G03F7/322

摘要： An alkaline developing composition for processing a lithographic printing plate includes an alkali metal silicate, at least 6 weight % of a thickener such as glycerine, and a nonionic fluorosurfactant or a phosphate ester hydrotrope. Lithographic printing plates that can be developed using this composition are either positive- or negative-working, and include both positive- and negative-working thermal plates.

公开(公告)号：EP0985166A1

公开(公告)日：2000-03-15

申请号：EP98918883.4

申请日：1998-04-30

申请人： Kodak Polychrome Graphics LLC

发明人： MILLER, Gary, A. ,  FELKER, Melanie, A. ,  WEST, Paul, R. ,  GURNEY, Jeffery, A. ,  HALEY, Neil, F.

IPC分类号： G03F7/32 ,  B41C1/10

CPC分类号： B41C1/1008 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/262 ,  G03F7/322

摘要： A positive-working lithographic printing plate is used to provide a positive image without a post-exposure baking step and without any floodwise exposure steps. The printing plate includes a layer that is imageable using an infrared radiation laser. This layer consists essentially of a phenolic resin, an infrared radiation absorbing compound, and a dissolution inhibitor that is non-photosensitive and is capable of providing sites for hydrogen bonding with the phenolic moieties of the binder resin. These printing plates are developed with an alkaline composition that includes an alkali metal silicate, a thickener and a fluorosurfactant or phosphate ester hydrotrope.