| abstract |
The purpose of the present invention is to provide an original plate of a planographic printing plate that reduces chronological bleeding or transferring of a substance while maintaining edge stain preventing performance, a plate-making method for the planographic printing plate, and a printing method using the planographic printing plate. An original plate of a planographic printing plate of the present invention is an original plate of a planographic printing plate having an image recording layer on a supporting body, wherein a layer arrangement described in one of the following items i to iv is provided, a hydrophilization agent layer containing a hydrophilization agent in a region within 1 cm from an end of the original plate of the planographic printing plate is provided at a specific position of the layer arrangement, and the image recording layer includes an infrared light absorbent and a specific radical polimerizable compound. i: Mode in which the supporting body layer and the image recording layer are provided in this order. ii: Mode in which the supporting body layer, an undercoating layer, and the image recording layer are provided in this order. iii: Mode in which the supporting body layer, the image recording layer, and a protection layer are provided in this order. iv: Mode in which the supporting body layer, the undercoating layer, the image recording layer, and the protection layer are provided in this order. |