| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing plate precursor which can be satisfactorily exposed in an outside drum type thermal image forming apparatus. SOLUTION: A method of manufacturing a lithographic printing plate comprises: preparing a lithographic printing plate precursor comprising: i) a grained and anodized aluminum substrate where the anodic weight is between 6.0 and 20 g/m<2> , having coated thereon; ii) a metallic layer; and image-wise exposing the precursor on an external drum thermal imaging device. The method provides press ready plates showing high image quality, good press properties and high durability on press without the requirement for the use of costly intermediate film and developer chemistry, and the attendant inconvenience resulting from the use of these materials.
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