| 摘要 |
PURPOSE:To improve definition and exposing rate by exposing the recording material with visible rays and laser beam, and forming surface relief images by the heating alone without using a developer after exposing. CONSTITUTION:The relief images are formed only by the heating treatment after exposing. A high-pressure mercury lamp, ultra-high pressure mercury lamp, high-pressure xenon lamp, halogen lamp, etc., are usable as a light source. After the recording body is exposed for a prescribed period of time by using such light sources, the recording body is heated in a dark place at 60 to 150 deg.C, more preferably 80 to 120 deg.C heating temp. The heating time is 1 to 20 minutes, more preferably 2 to 10 minutes. The exposing time necessary for the image formation is shortened if the heating is executed in the state saturated with steam. The exposing rate and definition are improved in this way. |
