| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a CTP device that can be continuously used even when some of laser diodes which are separately disposed do not emit light due to breakage or the like. <P>SOLUTION: When a part of channels are in a non-emission state, an exposure data by each channel is created in such a manner that exposure is carried out by using a specified channel in a light emission state determined on the basis of the position of the channel in a non-emission state, while an exposure head is moved also in complementary sections provided in the front and rear sides of a reference section where the exposure head is moved in a normal state. An exposed region is formed by moving the exposure head by a moving means in the reference section and in the complementary sections and by allowing the exposure light to exit from the specified channel according to the exposure data for each channel by an exposure control means. <P>COPYRIGHT: (C)2009,JPO&INPIT |
