MULTIPLE MARKET CONSUMABLE ID DIFFERENTIATION AND VALIDATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a system to authenticate a customer replaceable unit (CRU) in a printer system by comparing a validation code in the CRU with a printer generated validation code.

SOLUTION: A microcontroller integrated with the CRU generates a validation code. The validation code is a string of numbers and/or characters. The validation code is comprised of a value string including programmed characters representing a combination of a market program designator or code, consumable identification (ID) information and a randomly generated value. The code is independently established by the printing system or device using the same algorithm and information and validates the resulting Code when they match. The printing system or device confirms the validation code and ID applicability of the consumable to deem the CRU appropriate for use.

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