| 摘要 |
PURPOSE:To easily and accurately put print aligning marks at the time of forming a printing original plate forming film and to easily check the marks by applying void aligning mark patterns in case of executing image formation for each image forming signal out of plural color image forming signals. CONSTITUTION:In case of executing image formation for one color component of an original image in a monochromatic mode, void print aligning mark A patterns corresponding to four corners are outputted and then image data for each color component are outputted as they are from a binarization circuit 88 to a thermal head temperature control part 93. The print aligning mark A consists of a real mark part (a) and a void state [void part (b)] around the mark part (a) so that the mark (a) is embossed from a surrounding image of the mark A. Thereby the print aligning mark A shows a pattern different from the surrounding image and easily observed, so that the mark A can be surely distinguished from the surrounding image. |
