Hewlett-packard Development Company, L.P.

Laurian Dinca

Perry Victor Lea

Mark John Wibbels

Roger Scott Twede

Jamison B Slippy

Stephen H Schwartz

Jon T Huber

Ioana Monica Dinca

Stephen H Schwarz

An apparatus operates to provide default services or functionality. The apparatus authenticates replaceable resources by determining whether the replaceable resources originate from a desired source. The apparatus provides an auxiliary service or functionality in addition to the default services or functionality when each of the replaceable resources originates from the desired source, and precludes the auxiliary service or functionality when any of the replaceable resources do not originate from the desired source.

Providing auxiliary services or functionality on an apparatus

The present invention compensates a printed image for distortions caused by mechanical image stretch. One embodiment comprises a memory configured to store compensation data, the compensation data corresponding to distortion in a printed image caused by mechanical image stretch, and a processor configured to generate a compensated image data by combining data corresponding to the image and the compensation data, and configured to communicate the compensated image data to a printing system.

Compensating mechanical image stretch in a printing device

An electrophotographic imaging device includes a sensor for detecting uncontained toner. When the uncontained toner reaches a predetermined threshold, a warning signal can be generated indicating that a cleaning of the printer is recommended. With the present invention, potential print defects and/or mechanical jams may be reduced by avoiding excess accumulation of uncontained toner in the imaging device.

Toner dusting sensor and method

Growing community of inventors

Eagle, ID, United States of America

Laurian Dinca