| 摘要 |
A thermal printer includes a thermal printing head in an image forming section, which prints an image on one of first and second surfaces of a recording sheet oriented downwards. Feeder rollers feed the recording sheet to the image forming section after the recording sheet is set in a sheet supply slot. The printer includes at least one first memory for storing first image data of an image for being printed on the first surface, and second image data of an image for being printed on the second surface. The first or second image data are read from the first memory, and input to the image forming section. A second memory stores information of discrimination bar code adapted for designating the second image data associated with the first image data according to common assignment to the recording sheet. The information of the discrimination bar code is read from the second memory at a time of printing with the first image data to the first surface, and is printed on the first surface by the image forming section. A reading CCD reads the discrimination bar code from the first surface at a time of printing to the second surface. The second image data is specified according to the discrimination bar code, read from the first memory, and input to the image forming section.
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