DIFFERENTIAL PRINT SYSTEM, DIFFERENTIAL PRINT PRINTER, DIFFERENTIAL PRINT CONTROL DEVICE, DIFFERENTIAL PRINT PROGAM, DIFFERENTIAL PRINT CONTROL PROGRAM, DIFFERENTIAL PRINT DATA GENERATION PROGRAM, DIFFERENTIAL PRINT DETERMINATION PROGRAM, DIFFERENTIAL PRINT METHOD, AND DIFFERENTIAL PRINT CONTROL METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a differential print system suitable to reduce the consumption of toner or paper. PSOLUTION: A network printer 200 receives print data T containing a document ID, retrieves corresponding print data S from a storage device 62 based on the document ID contained in the print data T, compares the print data S with the print data T to generate differential print data U containing a change point, and performs, based on the differential print data U, differential printing wherein the words before and after the change are associated with the changed point to be printed. PCOPYRIGHT: (C)2006,JPO&NCIPI