Browse Prior Art Database

THERMAL BRIDGE CIRCUIT ONBOARD INK-JET HEATER DIE

IP.com Disclosure Number: IPCOM000026788D
Original Publication Date: 1993-Aug-31
Included in the Prior Art Database: 2004-Apr-06

Publishing Venue

Xerox Disclosure Journal

Abstract

Two thermally sensitive NMOS devices are combined in a bridge circuit on board a thermal ink jet (TIJ) heater chip to sense printhead temperature and to provide a signal to circuits which provide compensation for a temperature rise, thereby maintaining conditions necessary for high quality printing. The spot-size generated by a TIJ printer must be constant regardless of changes in printhead temperature when certain applications require a high-quality output.