abstract |
(57) [Abstract] (with correction) [Problem] A positive electrode which prevents dissolution of an anodic oxide film during development, eliminates whitening of non-image areas and stains on standing, and exhibits excellent printing durability. Provide a photosensitive lithographic printing plate. SOLUTION: A layer containing a polymer compound containing a specific structural unit, for example, a compound of the following structural formula is provided on an aluminum plate which has been subjected to a surface roughening treatment, an anodizing treatment, and then a hydrophilic treatment. A positive photosensitive lithographic printing plate provided with a photosensitive layer later. |