| 摘要 |
A printer prints all print data when an inverted print mode is selected for printing even if an insufficient memory state occurs in the image conversion buffer. If the roll paper printer 1 is set to the inverted print mode and an insufficient memory monitoring unit 23 detects an insufficient memory state in the image conversion buffer 13 before the inverted image data generating unit 22 converts and writes all of the received print data to a print data break to the image conversion buffer 13, the print mode switching unit 25 changes the print mode from the inverted print mode to the normal print mode, and the normal printing unit 26 prints the print data from the beginning. Because the print data is printed from the beginning when the inverted image data cannot be correctly generated because of insufficient memory, there is no loss of information contained in the print data.
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