| 摘要 |
PROBLEM TO BE SOLVED: To successively print a plurality of number of copies from the first page to the final page. SOLUTION: Received printing data is developed to store bit map data in a page memory and, at each time when the bit map data corresponding to one page is written in the page memory, the bit map data is not only transferred to a printing engine to be printed but also compressed to be written in a hard disk as compressed bit map data. When a plurality of editions are printed, the compressed bit map data stored in the hard disk is extended while the extended bit map data is read successively from the first page to the final page to be stored in the page memory and a plurality of the editions are printed successively from the first page to the final page.
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