| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming material which can be exposed even by exposure equipment for a printing plate using an aluminum substrate, can be used for backup of the printing plate in a system not necessitating wet developing processing, in particular, and enables increase of a speed in the case when a duplicate of the printing plate is needed and further which dispenses with an image setter and a developing machine for printing plate making, for exclusive use, and enables exposure of a material for printing plate making, without being affected by printing plate exposure equipment even when it has an exposure drum of large indentations. SOLUTION: The image forming material for printing plate making is put in a state of a plane having no curl and then it is cut in dimensions of 100×100 mm. When the end face of this material is fixed by 10 mm to be horizontal, the distance of the opposite end face from a horizontal plane is within 20 mm. |
