Photosensitive lithographic printing plate precursor

摘要

A photosensitive lithographic printing plate precursor comprising a support and at least one photopolymerizable layer for imaging by scanning with a laser beam, and showing a difference of 5 mum or smaller between Wa (mum) and Wb (mum) when imagewise exposed with a laser beam and developed in a developing tank containing an aqueous alkali developer in an automatic developing machine, wherein Wa is a width of a line formed along a fast scanning direction and developed using a developing brush set in the developing tank in contact with a surface of the exposed lithographic printing plate precursor, and Wb is a width of a line formed along a fast scanning direction and developed without the developing brush.