PURPOSE: To form a printing plate of high print-resisting power with less printing stains by using the printing plate formed with a dielectric layer by means of specific resin composition in an engraving method practised by fixing an ink receptive toner imagewise on the printing plate by the use of an electrophotographic method.
CONSTITUTION: Org. polysiloxane (A) and the epoxy-contg. alkoxy silane (B) expreseed by formula I [R is org. groups of C3-18 contg. epoxy groups; X is alkoxy of C1-8, (a) is 2, 3] are dissolved in an org. solvent, and the tetraalkoxy titanate (zirconate) (C) expressed by formula II (R1WR4 are hydrocarbon groups of C1W12; M is titanium, zirconium) is added to the thus resulted soln. The resulting reaction mixture is coated on a conductive substrate 21 and is then dried to form a dielectric layer 22, whereby the printing plate is prepd. Next, the latent images of an orlginal obtd. by an electrophotographic method are transferred onto said printing plate and this is developed with an ink receptive toner 23 and is fixed, whereby the printing plate is formed.
KASHIWAGI RIKUO
KAMAISHI TADAMI
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