Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2007-02-13
2007-02-13
Stephens, Juanita D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S056000, C347S065000
Reexamination Certificate
active
10994952
ABSTRACT:
A doubly-anchored thermal actuator for a micro-electromechanical device such as a liquid drop emitter or a fluid control microvalve is disclosed. The thermal actuator is comprised of a base element formed with a depression having opposing anchor. A deformable element, attached to the base element at the opposing anchor edges, is constructed as a planar lamination including a first layer of a first material having a low coefficient of thermal expansion and a second layer of a second material having a high coefficient of thermal expansion. The deformable element has anchor portions adjacent the anchor edges and a central portion between the anchor portions wherein the flexural rigidity of the anchor portions is substantially less than the flexural rigidity of the central portion. The doubly-anchored thermal actuator further comprises apparatus adapted to apply a heat pulse to the deformable element that causes a sudden rise in the temperature of the deformable element. The deformable element bows outward in a direction toward the second layer, and then relaxes to a residual shape as the temperature decreases. The doubly-anchored thermal actuator is configured with a liquid chamber having a nozzle or a fluid flow port to form a liquid drop emitter or a fluid control microvalve, or to activate an electrical microswitch. Heat pulses are applied to the deformable element by resistive heating or by light energy pulses.
REFERENCES:
patent: 3747120 (1973-07-01), Stemme
patent: 3946398 (1976-03-01), Kyser et al.
patent: 4296421 (1981-10-01), Hara et al.
patent: 5599695 (1997-02-01), Pease et al.
patent: 5684519 (1997-11-01), Matoba et al.
patent: 5754205 (1998-05-01), Miyata et al.
patent: 5771882 (1998-06-01), Psaros et al.
patent: 5902648 (1999-05-01), Naka et al.
patent: 5922218 (1999-07-01), Miyata et al.
patent: 6067797 (2000-05-01), Silverbrook
patent: 6087638 (2000-07-01), Silverbrook
patent: 6180427 (2001-01-01), Silverbrook
patent: 6254793 (2001-07-01), Silverbrook
patent: 6274056 (2001-08-01), Silverbrook
patent: 6345424 (2002-02-01), Hasegawa et al.
patent: 6481821 (2002-11-01), Yun et al.
patent: 6561627 (2003-05-01), Jarrold et al.
patent: 6598960 (2003-07-01), Cabal et al.
patent: 6631979 (2003-10-01), Lebens et al.
patent: 6869169 (2005-03-01), Cabal et al.
patent: 2003/0214556 (2003-11-01), Cabal et al.
patent: 196 23 620 (1996-12-01), None
Cabal Antonio
Pond Stephen F.
Eastman Kodak Company
Stephen Pond Consulting
Stephens Juanita D.
LandOfFree
Doubly-anchored thermal actuator having varying flexural... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Doubly-anchored thermal actuator having varying flexural..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doubly-anchored thermal actuator having varying flexural... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3877625