Infrared photosensitive composition and image recording material for infrared exposure

摘要

The invention provides a photopolymerizable composition hardenable by an infrared exposure, and an image recording material including such composition in a recording layer. The recording layer contained in the image recording material satisfies at least one of the following conditions (1) the recording layer, when exposed with an infrared laser after film formation, has a ratio of an electrostatic capacitance rate of increase in an exposed area to that in an unexposed area of 0.7 or less, (2) an image obtained by an exposure to an infrared laser and a development has a gradation (³) of at least 4, (3) a ratio of a film hardness after exposure to that before exposure is 1.1 or higher, and (4) a ratio of a surface contact angle after exposure to that before exposure is 1.1 or higher.