| 摘要 |
PROBLEM TO BE SOLVED: To position a first-time printed circuit and a second-time printed circuit precisely, irrespective of the degree of telescopic motions of a backing material.SOLUTION: Simultaneously with the printing of an electronic circuit (or a second-time circuit) on a printed matter 4 (or a first-time circuit), a pair of reference marks are added to vertically spaced positions of the printed matter 4. After this second-time circuit printing, a camera 210 is vertically moved to image a region containing one reference mark at a first mark position PM1, and to image a region containing the other reference mark at a second mark position PM2. From the taken images, positions of one reference mark and the other reference mark are detected, to determine a distance between the paired reference marks from the detected position of the reference marks, so that the revolving speed of a rubber cylinder 2 at the second-time circuit printing to the next printed matter 4 (or the first-time circuit) is adjusted according to the distance between those paired reference marks determined.SELECTED DRAWING: Figure 1 |
