Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-10-10
2006-10-10
Shah, Manish S. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S061000
Reexamination Certificate
active
07118202
ABSTRACT:
There is disclosed an ink jet printhead having a plurality of nozzles3and at least one heater element10corresponding to each nozzle respectively. Each heater element10is operatively controlled by associated drive circuitry22and is configured to heat a bubble forming liquid11in the printhead to a temperature above its boiling point to form a gas bubble12therein. The generation of the bubble12causes the ejection of a drop16of an ejectable liquid (such as ink) through an ejection aperture5in each nozzle3, to effect printing. The center of the drive circuitry22is offset from the center of the corresponding nozzle3by less than 200 microns. Positioning all the drive circuitry for the heater element of one unit cell1in a single, undivided area will reduce some conductor lengths within the circuitry and improve its efficiency. The present invention achieves this with an offset between the drive circuitry and the associated heater. That is, the drive circuitry is partially overlaid by one of the electrodes of the heater that it is controlling, and partially overlaid by one or more of the heater electrodes from adjacent unit cells. Configuring the nozzle components so that there is significant overlap between the electrodes and the drive circuitry provides a compact design with high nozzle density (nozzles per unit area of the nozzle plate). This also improves the efficiency of the printhead by shortening the length of the conductors from the circuitry to the electrodes.
REFERENCES:
patent: 4549191 (1985-10-01), Fukuchi et al.
patent: 4797692 (1989-01-01), Ims
patent: 4827294 (1989-05-01), Hanson
patent: 4931813 (1990-06-01), Pan et al.
patent: 4965594 (1990-10-01), Komuro
patent: 4982199 (1991-01-01), Dunn
patent: 5534898 (1996-07-01), Kashino et al.
patent: 5706041 (1998-01-01), Kubby
patent: 5710070 (1998-01-01), Chan
patent: 5831648 (1998-11-01), Mitani et al.
patent: 5841452 (1998-11-01), Silverbrook
patent: 5856836 (1999-01-01), Silverbrook
patent: 6102528 (2000-08-01), Burke et al.
patent: 6543879 (2003-04-01), Feinn et al.
patent: 2004/0155934 (2004-08-01), Silverbrook
patent: 1211072 (2002-06-01), None
patent: WO 01/66357 (2001-09-01), None
The Fabrication and Reliability Testing of Ti/TiN Heaters, P. Demoor, Proceedings of SPIE, Micromachining and Microfabrication Process Technology V, vol. 3874, pp. 284-294, Please note, this document was provided in copending U.S. Appl. No. 10/303,348.
Dymetman, M., and Copperman, M., “Intelligent Paper in Electronic Publishing, Artist Imaging, and Digital Typography, Proceedings of EP'98”, Mar./Apr. 1998, Springer Verlag LNCS 1375, pp. 392-406.
Shamilian, John N., Baird, Henry S., & Wood, Thomas L. “A Retargetable Table Reader”, Bell Laboratories, Lucent Tech Inc. Crawfords Comer Rd. Room 2F-217, Holmdel, NJ 07733-1988 USA.
Choi Han Samuel
Shah Manish S.
Silverbrook Research Pty Ltd
LandOfFree
Thermal ink jet printhead with drive circuitry offset from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal ink jet printhead with drive circuitry offset from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal ink jet printhead with drive circuitry offset from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3674153