Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2007-05-01
2007-05-01
Shah, Manish S. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S061000
Reexamination Certificate
active
10773203
ABSTRACT:
There is disclosed an ink jet printhead that has a plurality of nozzles3each defining a nozzle aperture5with a nozzle axis extending through the center of the nozzle aperture5and normal to the nozzle aperture. An ejectable liquid inlet31for establishing fluid communication between the nozzle aperture5and an ejectable liquid supply, the inlet having a central axis substantially parallel to the nozzle axis. A bubble forming chamber7corresponding to each nozzle respectively. At least one heater element10disposed in each bubble forming chamber7to heat a bubble forming liquid11to a temperature above its boiling paint 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 heater element is configured to nucleate the gas bubble at a point that is laterally offset from the inlet. Laterally offsetting the heater element10from the ink inlet31increases the fluidic drag retarding flow back through the inlet and ink supply passage. The fluidic drag through the nozzle aperture5is comparatively much smaller so little energy is lost to a reverse flow of ink through the inlet when a gas bubble forms on the element.
REFERENCES:
patent: 4549191 (1985-10-01), Fukuchi et al.
patent: 4827294 (1989-05-01), Hanson
patent: 4894664 (1990-01-01), Tsung Pan
patent: 4931813 (1990-06-01), Pan et al.
patent: 4965594 (1990-10-01), Komuro
patent: 5534898 (1996-07-01), Kashino et al.
patent: 5706041 (1998-01-01), Kubby
patent: 5710070 (1998-01-01), Chan
patent: 5841452 (1998-11-01), Silverbrook
patent: 5856836 (1999-01-01), Silverbrook
patent: 6447104 (2002-09-01), Keil et al.
patent: 6543879 (2003-04-01), Feinn et al.
patent: 2002/0008732 (2002-01-01), Moon et al.
patent: 2004/0155937 (2004-08-01), Silverbrook
patent: 1211072 (2002-06-01), None
patent: 07-060955 (1995-03-01), None
patent: 2002-210951 (2002-07-01), 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.
Examiner's amendment from U.S. Appl. No. 10/302,617.
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 H., Baird, Henry S., & Wood, Thomas L. “A Retargetable Table Reader”, Bell Laboratories, Lucent Tech Inc. Crawfords Corner Rd, Room 2F-217, Holmdel, NJ 07733-1.
Choi Han Samuel
Shah Manish S.
Silverbrook Research Pty Ltd
LandOfFree
Thermal ink jet printhead with bubble nucleation 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 bubble nucleation 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 bubble nucleation offset from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3735731