| 摘要 |
PROBLEM TO BE SOLVED: To provide an original plate for planography printing plate with high productivity capable of employing a laser source low in cost. SOLUTION: The original plate for planography printing plate has a photosensitive image forming layer including a compound that chemically or physically changes the property by light, a layer including a wavelength converting material that converts wavelength of incident light into photosensitive wavelength of the compound shorter than the wavelength of the incident light, and a layer absorbing or reflecting light in the range from ultraviolet region to visible region, which are in turn disposed on a hydrophilic supporting body. |
