PROBLEM TO BE SOLVED: To provide an information processing system that can easily determine a print resumption page without communicating with firmware in an image output device or without using functions in a controller.SOLUTION: An information processing system (1; 2; 3; 4; 5) includes: reception means (121; 312) for receiving an image of a page that was printed normally at the last when printing is interrupted; and means (33) for determining which page the received image corresponds to among registered images of a document.SELECTED DRAWING: Figure 1
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