| 摘要 |
In a printing system including a faceup printer and a facedown printer, the faceup and facedown printers are paired to print one document. In this case, the document is printed by the faceup printer from the end to start of the document and by the facedown printer from the start to end thereof. Printing ends when one printer is to print a page being printed by the other printer. Therefore, even if the printing speeds of the two printers are different, the whole document can be printed most efficiently. Even for a system having a larger number of printers, printing can be efficiently performed by similarly pairing the printers.
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