| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a producing method for printing plates that enables easy and sure inspection of printing plates and efficient production of unprocessed printing plates, where invisible images are formed, and to provide an apparatus therefor. <P>SOLUTION: A printing plate is exposed to form an image on the printing plate from an exposed area which has got a spectral absorption change to occur in an invisible range. While at the same time the spectral absorption change in the invisible range is read, the image formed by the spectral absorption change thus read is reconstructed as a visible image, and the thus reconstructed visible image is outputted. Alternatively, information that needs to be read in a subsequent printing step is drawn by an ink jet in an area of the printing plate, where the exposure has ended. Consequently, printing plates can be produced, without conducting wet development processing. <P>COPYRIGHT: (C)2007,JPO&INPIT |
