METHOD OF PREVENTING UNAUTHORIZED USE, IMAGE FORMING DEVICE, AND IMAGE FORMING SYSTEM

PROBLEM TO BE SOLVED: To maintain the life of a product by prevent use of copy parts. SOLUTION: A serial number written on the surface of a package of interchangeable parts is inputted by ten keys of an operation panel (step S1), and agreement between the serial number and a number preliminarily reg...

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Bibliographische Detailangaben
1. Verfasser:	YASUDA KEIZO
Format:	Patent
Sprache:	eng
Schlagworte:	CINEMATOGRAPHY CORRECTION OF TYPOGRAPHICAL ERRORS ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MAGNETOGRAPHY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To maintain the life of a product by prevent use of copy parts. SOLUTION: A serial number written on the surface of a package of interchangeable parts is inputted by ten keys of an operation panel (step S1), and agreement between the serial number and a number preliminarily registered in a recording part RAM is checked (step S2), and following image forming operation itself is inhibited (step S4) in the case that the number is a number departing from regular parts(no in step S3), and following image forming operation is permitted (step S5) in the case that the number of a number which does not depart from regular parts. This constitution prevents piratical parts or the like from being wrongfully built in. COPYRIGHT: (C)2004,JPO