METHOD AND APPARATUS FOR ROTARY PRINTING, AND METHOD OF IMAGE CONVERSION

摘要

A rotary printing apparatus comprising: a thermal head 11 for printing in a main scanning direction along a radial direction of a disk print medium M; a stepping motor 15 for rotating the disk print medium in a sub-scanning direction along a circumferential direction of the disk print medium M; and a CPU 61 for converting rectangular coordinate-type image data, supplied from an external host device, to rotational coordinate-type image data consisting of a plurality of pixels arranged in the main scanning and sub-scanning directions of the disk print medium. With this construction, an image expressed in a rectangular coordinate system can be printed on the disk print medium without distorting the image. <IMAGE>