| abstract |
To provide a coloring photosensitive composition and a lithographic printing plate precursor, ensuring that coloring stability after exposure by infrared laser exposure is good and high coloring is obtained even when exposed after the elapse of time. n These can be a coloring photosensitive composition containing a microgel encapsulating (A) a polymer having a glass transition temperature of 50°C or more, (B) a photoinitiator, and (C) an infrared absorbing dye, and a lithographic printing plate precursor having an image-recording layer containing the composition. |