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SMART CARDS FOR MONITORING AND CONTROLLING CARTRIDGE REPLACEABLE MEMORY UNITS

IP.com Disclosure Number: IPCOM000027817D
Original Publication Date: 1999-Dec-31
Included in the Prior Art Database: 2004-Apr-09
Document File: 2 page(s) / 129K

Publishing Venue

Xerox Disclosure Journal

Abstract

Presently, the Cartridge Replacement Unit Memory (CRUM) of various costs and functionality are found in electrophotographic printers and copiers. All CRUMs generally contain an Electrically Erasable Programmable Read Only Memory (EEPROM), a printed circuit board on which components are laid out to ensure appropriate functionality of the EEPROM, and a connector that serves to mate the CRUM to the machine. Similarly disclosed is the use of "Smart Cards" that can be utilized to interface with the printing machine in a comparable fashion that is currently accomplished by the EEPROM found on the CRUM.

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XEROX DISCLOSURE JOURNAL

SMART CARDS FOR MONITORING AND CONTROLLING CARTRIDGE REPLACEABLE MEMORY UNITS Melvin J. Russell, Jr.

Eli S. Saber

Proposed Classification
U. S. C1. 399/025 Int. C1. GO3g 15/00

Presently, the Cartridge Replacement Unit Memory (CRUM) of various costs and functionality are found in electrophotographic printers and copiers. All CRUMs generally contain an Electrically Erasable Programmable Read Only Memory (EEPROM), a printed circuit board on which components are laid out to ensure appropriate functionality of the EEPROM, and a connector that serves to mate the CRUM to the machine. Similarly disclosed is the use of "Smart Cards" that can be utilized to interface with the printing machine in a comparable fashion that is currently accomplished by the EEPROM found on the CRUM.

CRUMs can be programmed during manufacturing to contain a secure identification number assigned to the purchaser. Then the purchaser, as the user, can program a second identification number for additional security and personalization of the CRUM. Thus "smart cards," for example, arrive programmed by the vendor to contain a Xerox approved identification number. In addition, Xerox programs the "Smart Card" to contain secondary security identification distinguishing between various product types, market regions, etc. During operation, machine-based software changes the contents of the "Smart Card" in order to keep track of various types of information through a pre- identified level of security executed by the machine and known only to Xerox.

REFERENCE

U.S. Patent No. 4,551,000 to Kanemitsu et al. describes a replaceable unit for an image- forming device, i.e. copier or printer, where an apparatus is included for indicating the useful life of the replaceable unit and its expiration.

U.S. Patent No. 4,585,327 to Suzuki discloses a service life determining system for an image bearing member of a copying apparatus and the like.

U.S. Patent No. 4,586,147 to Tadokoro discloses a history information providing device for printers.

Xerox Disclosure Journal - Vol. 24, No. 6 November/December 1999 269

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SMART CARDS FOR MONITORING AND CONTROLLING CARTRIDGE REPLACEABLE MEMORY UNITS (Cont'd)

US. Patent No. 4,634,258 to Tanaka et al. discloses a color-copying machine with a copy number cou...