PRINTER

摘要

A printer has an imaging part for reading an image on printer paper. The image data captured is processed by a control part. The positions of register marks (R1-R4)are determined by calculation. The position shift necessary to position the image is calculated. From the calculated position shift, an offset count Co for determining an image recording start position is determined. The determined offset count Co is stored and start position data is generated. Then, image dimension correction data is calculated. An image on the printer paper is captured, and the necessary position shift is calculated. To alter the rotational speed of the plate cylinder, a speed coefficient k is calculated. Accordingly, the correction value by a predetermined Cd default count predetermined to determine the image recording start positions changed. As a result, the offset count Co is again calculated on the basis of the calculated speed coefficient k. The calculated speed coefficient k and offset count Co are stored, and the start position data is generated from both values.