Hewlett-packard Development Company, L.p.

Travis N Moats

Jeetendra Kumar

Kevin A Owen

Shell Sterling Simpson

Roman Thomas Wachter

Mark A Harper

Sandra L Schneider

Mark Clark

A consumable resource option control unit includes a consumable resource and an option key coupled to the consumable resource. The option key is configured to enable an optional mode of operation for an image-forming device and to cause a display associated with an image-forming device to indicate availability of the mode of operation.

Consumable resource option control

An image-printing device includes a connection bay that accepts an insertable consumable resource. The consumable resource includes an option key that identifies at least one mode of operation associated with the consumable resource. The connection bay outputs at least one signal associated with the mode of operation when the consumable resource is inserted. A controller receives the signal associated with the mode of operation and in response outputs display information suitable for use by a display to indicate a selectable availability of the at least one mode of operation.

A printing device has a replaceable component. Printing by the printing device utilizes the replaceable component. Printing with the printing device is stopped when an end-of-life condition is detected for the replaceable component. A list of one or more identifiers (IDs) is output for pending print jobs. In response to an input of one of the IDs, the corresponding pending print job is printed.

Selective printing after consumable exhaustion

A multi-color imaging apparatus that can support a plurality of color-associated rotatable-toner-transfer-devices includes a rotatable-toner-transfer-device disengagement unit. The disengagement unit can selectively disengage a selected color-associated rotatable-toner-transfer-device depending on whether the selected color-associated rotatable-toner-transfer-device is required to generate an image. In one example the imaging apparatus can also include a processor and a computer readable memory device. In this example a rotatable-toner-transfer-device disengage program can be stored in the memory device. The program is executable by the processor to allow the rotatable-toner-transfer-device disengagement unit to selectively disengage the selected color-associated rotatable-toner-transfer-device.

Reduction of wear on selected components in multi-color imaging apparatus

A requirement of a replaceable component to print a print job at a printing device is derived from a predetermined use per page of the replaceable component at the printing device. If an availability of the replaceable component at the printing device is less than the requirement, a diagnostic is output. The requirement and the availability are approximations expressed in a number of pages.

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Meridian, ID, United States of America

Travis N Moats