发明授权
- 专利标题： Potassium silicate developing composition and method of use to process lithographic printing plates
- 专利标题（中）： 硅酸钾显影组合物及其制备方法
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申请号： US729472申请日： 1996-10-11
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公开(公告)号： US5897985A公开(公告)日： 1999-04-27
- 发明人: Gary Roger Miller , Janice Kay Stuber , Melanie Ann Felker
- 申请人： Gary Roger Miller , Janice Kay Stuber , Melanie Ann Felker
- 申请人地址： CT Norwalk
- 专利权人： Kodak Polychrome Graphics, LLC
- 当前专利权人： Kodak Polychrome Graphics, LLC
- 当前专利权人地址： CT Norwalk
- 主分类号： G03F7/00
- IPC分类号： G03F7/00 ; G03F7/30 ; G03F7/32
摘要：
An alkaline developing composition for processing a lithographic printing plate includes an alkali metal silicate present in an amount to provide at least about 42 g SiO.sub.2 per 1000 g of composition, and a weight ratio of SiO.sub.2 to M.sub.2 O of from about 0.55 to about 0.925 wherein M is said the metal. The lithographic printing plate can be either positive- or negative-working, and includes negative-working thermal plates.
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