Patent ID: 8045198
Filing Date: 2011-10-25
Classification: G06F

Abstract:
1. A printer, comprising: a file input section that receives an input PDF file and print instruction information, the input PDF file containing a change history of edits to the input PDF file; a change history extraction section that extracts a change history from the input PDF file; and a print processing section that prints the extracted change history; said print instruction information including period designation information which designates a period of time for the PDF file, and summary/change-history-added page selection instruction information which instructs which printing process from a group of printing processes is to be executed, said group of printing processes including a summary printing process in which a summary of the extracted change history is printed and a change-history-added page printing process in which a page in the PDF file, which contains the extracted change history, is printed such that the change history is visualized; said change history extraction section extract in the change history from the input PDF file corresponding to the period designation information; said print processing section executing the summary printing process or the change-history-added page printing process according to an instruction indicated by the print instruction information.