Browse Prior Art Database

DUMB CUSTOMER REPLACEABLE UNIT MONITOR STRATEGY

IP.com Disclosure Number: IPCOM000027880D
Original Publication Date: 2001-Jun-30
Included in the Prior Art Database: 2004-Apr-09
Document File: 2 page(s) / 104K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a strategy for employing a CRUM (Customer Replaceable Unit Monitor) strategy for a Customer Replaceable Unit (CRU) in an electrophotographic printing machine that greatly reduces cost. The main function of a CRUM on a CRU prevents the CRU seller from losing money to refillers, third party manufacturers and arbitrage. However, CRU's bundled with the machine in a customer's initial purchase are not at risk to refillers, third party manufacturers and arbitrage, since the CRU is sold and shipped with the machine. For this reason, there is no reason to put a CRUM on these CRU's. These CRU's do not need protection because they are not at risk.

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XEROX DISCLOSURE JOURNAL

DUMB CUSTOMER REPLACEABLE UNIT MONITOR STRATEGY
Karl E. Kurz
Thomas J. Vandenberg
David R. Beach

Proposed Classification
U. S. C1. 399/024 Int. C1. G03g 15/00

Disclosed is a strategy for employing a CRUM (Customer Replaceable Unit Monitor) strategy for a Customer Replaceable Unit (CRU) in an electrophotographic printing machine that greatly reduces cost. The main function of a CRUM on a CRU prevents the CRU seller from losing money to refillers, third party manufacturers and arbitrage. However, CRU's bundled with the machine in a customer's initial purchase are not at risk to refillers, third party manufacturers and arbitrage, since the CRU is sold and shipped with the machine. For this reason, there is no reason to put a CRUM on these CRU's. These CRU's do not need protection because they are not at risk.

The logical solution employs a strategy enabling bundled CRU's shipped with the machine to be shipped less the CRUM. Nevertheless, the CRUM also provides a means for the machine to sense that a CRU has been properly installed in the machine. Therefore, the disclosed solution employs a strategy not requiring an expensive and fully functional CRUM, yet also allows the machine to sense proper installation of the CRU. This strategy is the Dumb CRUM Strategy that is disclosed here.

The implemented strategy takes advantage of the "Dumb CRUM'. Basically, a dumb CRUM is a CRUM that is physically the same as a smart CRUM, yet does not contain a memory chip. The dumb CRUM only contains a circuit that allows the machine to sense whether or not a copy cartridge is present and properly installed in the machine. Machine software and machine memory keep track of the copy cartridge life for the first cartridge installed at the machine assembly line. This differs from other strategies wherein, machine software accesses and manipulate...