Hewlett-packard Development Company, L.p.

Roman Thomas Wachter

Jeetendra Kumar

Nataraj Kumar Gobbak

Chet M Butikofer

Kevin A Owen

Travis N Moats

Mark Clark

This invention relates to a cover attached to an output device that is connected to an imaging device. The purpose for this cover is to avoid output motion and media movement detection in high security areas, such as banks, insurance companies or the like. Such structures of this type, generally, provide an alert mechanism to the imaging device to forward the printed output to the covered output device.

Apparatus and method to avoid detecting output motion and media movement

A printing device can receive a replaceable component that includes an integrated memory. The integrated memory can store an indicator for indicating a condition of the component. The printing device can retrieve the indicator from the integrated memory. The printing device can determine from the indicator the condition of the component. The printing device can monitor for an occurrence of a trigger event. The printing device can, if the component is determined to be in a first condition and a trigger event occurs, increment a component usage count. The component usage count can be stored in a memory internal to the printing device.

Tracking component usage in a printing device

A system and method are provided for correcting a hang condition caused by an unanticipated exception during a printing process. The method may include providing a set of predetermined rules according to which the print process modules interact to control the printing process. The method further may include monitoring, from a self-correcting module, a state of each of a plurality of the print process modules. The method may also include determining that the printing device is hung during a printing process, based on at least one predetermined rule and the state of at least one print process module, and setting the state of at least one print process module to a default condition.

Self-correcting printing system

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 printing system is described. The printing system includes a printer capable of utilizing print material contained by a cartridge. The printer is capable of detecting when the level of the print material is at a different one of a plurality of pre-determined levels. The printer is also capable of counting pixels. The printer can periodically estimate the remaining life of the cartridge using a reference print material level and the change in pixel count since the print material was at the reference material level.

System for estimating the remaining life of a print cartridge

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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Boise, ID, United States of America

Roman Thomas Wachter