Hewlett-packard Company

Hewlett-packard Development Company, L.p.

Babak Honaryar

Kieran B Kelly

Pierre Joseph Kaiser

William J Jennings

Joseph D Barbera

Ralph L Stathem

Kris M English

Kevin D Almen

John R Carnes

In order that sensitive structures of inkjet printing mechanisms be cleaned without damaging these structures, a cleaning sheet and a process of using the sheet has been created. Debris and dried ink is removed from print cartridges and their carriage using a cleaning sheet having two strips of material spaced with a napped surface disposed longitudinally between the side edges and spaced apart from each other. By controlling the distance the strips are spaced from the sheet feed edge of the cleaning sheet, the print cartridges can be placed adjacent the strips for scrubbing against the strips without resulting in a media jam in the printer due to the increased thickness of the cleaning sheet.

Method of cleaning for an inkjet printer

A multi-purpose, transmissive paper sensor includes a light beam projector and light detector having an analog output signal. Changes in the output signal from an open loop condition indicate the presences of at least one print medium being in the field-of-view of the sensor. Output signals indicative of print media leading edge, trailing edge, and number of sheets interrupting the light beam provide improved print media transport control for hard copy apparatus.

Method and apparatus for print media detection

Growing community of inventors

Carlsbad, CA, United States of America

Babak Honaryar