To provide a support of a press plate for an electrophotographic planographic printing plate, which is excellent in blocking resistance in the manufacture of the support of the press plate for the electrophotographic planographic printing plate and solvent resistance in the application of a photosensitizer to the support, excellent in printing resistance when printing is done by means of the finished press plate for the electrophotographic planographic printing plate, and excellent especially in durability against dampening water in the printing, and the press plate for the planographic printing plate, using the support.
In a coating layer for being applied to the front and back sides of the support of the press plate for the electrophotographic planographic printing plate, the glass-transition temperature and gel content of a binder component in paint for use at least in an under layer are regulated.
HATANAKA TAKATERU
OTAKE ISAO
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