| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a printer capable of performing printing a receipt by embedding a watermark into the receipt. <P>SOLUTION: The printer includes a receiving means 111 for receiving printing data including embedding information and accounting information transmitted from a host computer, a printing pattern forming means 112 for forming a printing pattern from the printing data, a watermark embedding means 113 for embedding the watermark prepared by coding by gradation printing to the embedding information into a predetermined embedding region for the printing pattern, and a printing means 120 for printing the printing pattern. <P>COPYRIGHT: (C)2010,JPO&INPIT |
