Xerox Corporation

Shelley M Taylor

Krzysztof J Less

Eric J LeSueur

Robin A Collins

A printing machine, having operating parameters associated therewith, for producing prints is provided. The printing machine includes a controller for controlling the operating parameters and an operator replaceable sub-assembly adapted to serve as a processing station in the printing machine. The operator replaceable sub-assembly includes a memory device, communicating with the controller when the replaceable sub-assembly is coupled with the printing machine, for storing a value which varies as a function of the usage of the replaceable sub-assembly, the controller adjusting a selected one of the operating parameters in accordance with the stored value for maintaining printing quality of the printing machine.

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Stevenage, United Kingdom

Shelley M Taylor