| 摘要 |
PURPOSE:To eliminate fogging at a non-image part and to improve brush resistance and eliminate the need for water to wet by forming the no-image part on an organic photoconductor layer by using a developer consisting principally of a (meth)acrylate polymer or copolymer which contains fluorine atoms. CONSTITUTION:A lithographic plate 1 consists of a conductive substrate 2, an organic photoconductor layer 3, an image part 4, and the no-image part 5. The no-image part 5 consists of the developer consisting principally of the polymer or copolymer of (meth)acrylate containing fluorine atoms. An original plate provided with the organic photoconductor 3 on the conductive substrate 2 is corona-discharged in darkness, image exposure is carried out by scanning semiconductor laser light, etc., and toner development and heat fixation are performed. Consequently, no developer sticks on the exposed part to form an image part 4 and the developer sticks on the unexposed part to form the no- image part 5. Thus, ink sticks on the organic photoconductor layer without any wetting water and does not stick on the no-image part at all to obtain a print of high quality.
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