Patent ID: 7851132
Filing Date: 2010-12-14
Classification: G03F

Abstract:
1. A negative-working photopolymerization type photosensitive lithographic printing plate precursor for exposing with laser, comprising: a hydrophilic support; at least one photopolymerizable photosensitive layer; and a protective layer, provided in this order, wherein the photopolymerizable photosensitive layer comprises a sensitizing dye, a yellow dye or pigment, which is different from the sensitizing dye; and a photopolymerization initiator; and wherein said yellow dye or pigment is capable of absorbing light within the wavelength range of ±50 nm of a wavelength of a laser emission, wherein the laser is a laser of blue to ultraviolet region emitting light within the wavelength range of 350 to 450 nm.