DR. JEFFREY ALAN ANDERSON, DC
Chiropractic at 60 Ave, Portland, OR

4970535, Nov 13, 1990

Nov 27, 1989

7/442446

James C. Oswald - Beaverton OR
Jeffrey J. Anderson - Portland OR
Ted E. Deur - Portland OR

Tektronix, Inc. - Beaverton OR

B41J 2165

346140R

An ink jet print head face cleaner provides a controlled air passageway through an enclosure formed against the print face. Air is directed through an inlet into a cavity in a body. The body has a face with an opening into the cavity. This face is sealingly placeable against the print face. The cavity has a limited size so that air is directed without interruption through the cavity past the ink jet apertures, and out an outlet. The cleaner body is coupled resiliently to a platform to allow positioning of the body and print faces flush with each other. A vacuum source is preferably attached to the outlet to create a subatmospheric pressure in the cavity to further seal the two faces together. A collection chamber and removable drawer are positioned below the outlet to facilitate disposing of removed ink.

4889761, Dec 26, 1989

Aug 25, 1988

7/236490

Donald R. Titterington - Tualatin OR
Jeffrey J. Anderson - Portland OR
James D. Rise - Portland OR
Wayne Jaeger - Beaverton OR

Tektronix, Inc. - Beaverton OR

B32B 300, G01D 900

428195

A method for producing a light-transmissive phase change ink printed substrate is described which comprises providing a substrate, and then printing on at least one surface of the substrate a predetermined pattern of a light-transmissive phase change ink which initially transmits light in a non-rectilinear path. The pattern of solidified phase change ink is then reoriented to form an ink layer of substantially uniform thickness. This ink layer will, in turn, produce an image which then will transmit light in a substantially rectilinear path. In one aspect of the invention, the substrate is light transmissive, and the reoriented printed substrate exhibits a high degree of lightness and chroma, and transmits light in a substantially rectilinear path. In this way, the reoriented printed substrate can be used in a projection device to project an image containing clear, saturated colors.

4883219, Nov 28, 1989

Sep 1, 1988

7/239358

Jeffrey J. Anderson - Portland OR
John S. Moore - Beaverton OR
Ted E. Deur - Portland OR
Joy Roy - Beaverton OR

B23K 2000

228190

A first surface of a first metal component of an ink jet print head is bonded to a second surface of a second metal component of the ink jet print head, the first and second surfaces being of materials having the same or similar coefficients of thermal expansion. A layer of filler material is electroplated or otherwise placed on at least one of these surfaces. The filler material has a melting point which is below the melting point of the first and second components, and the total thickness of the filler material on the surfaces together is in the range of from approximately one-sixteenth micron to approximately five microns, with one-eighth micron to two microns being a preferred range. These surfaces are placed together and subjected to heat and pressure to diffusion bond the surfaces without melting the filler material. The diffusion bonding is performed in one approach until no more than approximately one micron of filler material remains between the surfaces.

4875619, Oct 24, 1989

Sep 1, 1988

7/239587

Jeffrey J. Anderson - Portland OR
John S. Moore - Beaverton OR

B23K 2000

228190

A first surface of a first metal component of an ink jet print head is bonded to a second surface of a second metal component of the ink jet print head, the first and second surfaces being of materials having the same or similar coefficients of thermal expansion. A layer of filler material is electroplated or otherwise placed on at least one of these surfaces. The filler material has a melting point which is below the melting point of the first and second components, and the total thickness of the filler material on the surfaces together is in the range of from approximately one-sixteenth micron to approximately five microns, with one-eighth micron to two microns being a preferred range. These surfaces are placed together and brazed under low pressure. Preferably, the braze pressure is from about one-half psi to no more than about one hundred psi, with about ten psi being most preferred.

4727378, Feb 23, 1988

Jul 11, 1986

6/884846

Hue P. Le - Aloha OR
Jeffrey J. Anderson - Portland OR
Guenther W. Wimmer - Portland OR
Monte J. Rhoads - Aloha OR
Ted E. Deur - Vernonia OR

Tektronix, Inc. - Beaverton OR

G01D 1516

346 11

An ink jet head 10 has an ink chamber 14 which receives ink from an ink inlet passageway 38. Pressure pulses applied to the ink chamber cause the ejection of ink drops from an ink drop forming orifice 23 and toward printing medium. A purging outlet 41 communicates with the ink chamber through a purging passageway 40. During purging, ink flows in a vortical path through the ink chamber 14 from the ink inlet passageway 38 to the purging outlet passageway 40. This sweeps air bubbles and contaminants from the ink chamber walls and removes them from the ink chamber. Ink pressure within the ink chamber 14 may be elevated to increase the flow of ink during purging. Also, a negative pressure may be applied to the purging outlet during purging. Variable frequency pressure pulses may also be applied to the ink chamber to assist the purging process.