JP2003186182A5 - - Google Patents

Claims (7)

A photosensitive image is obtained by providing a photosensitive layer containing a near-infrared absorbing dye on a support and irradiating the photosensitive layer with a near-infrared light having a light intensity density of 100 Wcm ^-2 or less for 0.1 seconds or longer to thermally dry the photosensitive layer. A laser plate making method comprising: forming a forming material, performing scanning image exposure with a laser beam at a scanning speed of 0.1 m / second or more, and then performing plate making processing to form an image with a photosensitive layer.   A laser plate making apparatus having at least an image forming material fixing drum, a plate material supply mechanism, a plate making agent supply mechanism and an exposure mechanism is used, and (A): a plate on a support fixed on the image forming material fixing drum. A photosensitive plate material is supplied and applied from the material supply mechanism to form an image forming material, and then (B): image exposure of the image forming material by the exposure mechanism is performed, and (C): plate making on the image exposed image forming material. 2. The laser plate making method according to claim 1, wherein an image is formed by supplying a plate making treatment agent from a treatment agent supply mechanism and further applying physical stimulation as necessary.   (D): After printing ink is supplied from the ink landing device to the image surface of the image-forming image-formed material, and the image-forming material fixing drum is rotated and printing paper is supplied for printing, (E 3) The laser plate making method according to claim 2, wherein the support is regenerated by removing an image portion on the support by a plate material removing mechanism.   The image forming material is a photopolymerizable image forming material for near infrared laser exposure of 700 to 1300 nm or a photopolymerizable image forming material for blue-violet laser exposure of 400 to 420 nm. Laser engraving method.   700 to 1300 nm near-infrared laser exposure, in which the image forming material comprises a positive photosensitive composition containing a light converting substance (A) that absorbs light from a light source for image exposure and converts it into heat, and a novolac resin (B). The laser plate-making method according to claim 1, which is a positive photosensitive plate material for use. In a laser plate making apparatus having an image forming material fixing drum for fixing an image forming material, an image forming material for supplying and applying a photosensitive plate material is formed on a support fixed on the image forming material fixing drum. A plate material supply mechanism, an exposure mechanism for image exposure of the image forming material, and a plate making processing agent supply mechanism for supplying a plate making processing agent onto the image formed material on which the image has been formed. Laser plate making equipment. In a printing machine having a laser plate making apparatus having an image forming material fixing drum for fixing an image forming material, the laser plate making apparatus has a photosensitive plate on a support fixed on the image forming material fixing drum. A plate material supply mechanism for forming an image forming material for supplying and applying a material, an exposure mechanism for exposing the image forming material to an image, and a plate making processing agent supply mechanism for supplying a plate making processing agent onto the image-formed image forming material And a printing press having a laser plate-making apparatus.