Print color and black-and-white mixed document, a method for recovering from the interruption

摘要

A method for recovering from an interruption while executing color split printing is described. The document is split into two sub-documents. N sets of the first sub-document are printed on a first printer, and N sets of the second sub-document are printed on a second printer while merging sheets of the first sub-document using a paper inserter unit. When an interruption occurs when printing and merging the nth set, the nth set is skipped and the remaining sets are finished first. Then, the second printer instructs the user to place the printed sheets of the nth set of the first sub-document starting from the first sheet after the point of interruption in the paper inserter unit. The second printer prints the nth set of the second sub-document starting from the point of interruption while merging sheets of the first sub-document using the paper inserter unit to complete the nth set.