| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively prevent extension of the influence to a rear stage side printing unit by a simple structure when misregistration successively applied to matter to be printed is corrected. <P>SOLUTION: A detection means 19 for detecting a printing position applied to the matter to be printed by a printing plate cylinder of the printing unit, a revising means 21 which revises the misregistration by adjusting a plate cylinder phase of the printing unit in which the misregistration occurs, and a correction means 22 which corrects a plate cylinder phase of the printing unit positioned to the rear stage side of the printing unit where the correction for misregistration is carried out, are provided. At a point in time when adjustment of the plate cylinder phase is carried out, a plate cylinder phase of the printing unit to the rear stage side is initially corrected in the same direction as the correction direction, and to the same degree. Besides, at a point of time when the printed part reaches the latter stage side of the printed part just after correction of the misregistration is carried out, after the plate cylinder phase of the printing unit to the rear stage side is revised again, a phase revising amount after the revision again is decreased according to passage of time. <P>COPYRIGHT: (C)2007,JPO&INPIT |
