| 摘要 |
<p>A lithographic printing plate precursor which is prevented from the occurrence of development scum without causing decrease in a development speed and provides a lithographic printing plate excellent in stain resistance and ink receptivity and a method for producing a lithographic printing plate using the same are provided. A lithographic printing plate precursor having a photosensitive layer and a protective layer in this order on a support, wherein the photosensitive layer contains a sensitizing dye, a polymerization initiator, a polymerizable compound and a binder polymer, and the protective layer contains a polymer which contains a repeating unit represented by formula (1) shown below and a repeating unit represented by formula (2) shown below in which a sum of the repeating unit represented by formula (1) and the repeating unit represented by formula (2) is 90% by mole or more based on total repeating units constituting the polymer. In formulae (1) and (2), R 1 and R 4 each independently represents a hydrogen atom or a methyl group, R 2 and R 3 , which may be the same or different, each represents a hydrogen atom, a methyl group or an ethyl group, and R 5 represents an unsubstituted alkyl group having from 1 to 8 carbon atoms or an alkyl group substituted with an aromatic group or a heterocyclic group.</p> |
