Joseph E Scheffelin

6334661, Jan 1, 2002

Jul 2, 1999

09/347076

Steven W. Steinfield - San Diego CA
Joseph E. Scheffelin - Poway CA
William S. Colburn - San Diego CA

Hewlett-Packard Company - Palo Alto CA

B41J 2145

347 20

This present invention is embodied in a printing system and method for inducing shrinkage-tensioning of a flexible nozzle member of a printhead portion of an inkjet printer with an adhesive and novel arrangement. The printing system of the present invention includes a nozzle member securely coupled to a printhead body with an adhesive arrangement that allows shrinkage-induce tensioning of the nozzle member. The adhesive arrangement includes having an adhesive located between a top portion of the printhead body and the flexible nozzle member. The top portion has a mechanical structure such that it induces tensioning of the flexible nozzle member during thermal expansion of the adhesive. Namely, the adhesive arrangement of the printing system of the present invention is capable of efficiently tensioning, and thus, flattening the flexible nozzle member during the adhesion process of the nozzle member. As a result, trajectory errors of ejected ink droplets from the nozzles are reduced.

6341845, Jan 29, 2002

Aug 25, 2000

09/648120

Joseph E. Scheffelin - Poway CA
Janis Horvath - San Diego CA
Brian J. Keefe - La Jolla CA
Lawrence H. White - Corvallis OR
Ali Emamjomeh - Duchess Crest, SG
Paul Mark Haines - Lebanon OR

Hewlett-Packard Company - Palo Alto CA

B41J 2155

347 50, 347 42

A wide-array inkjet printhead assembly includes a carrier and a printhead die. The carrier includes a substrate and an electrical circuit. The substrate has a first side and a second side such that the electrical circuit is disposed on the second side of the substrate. The printhead die is mounted on the first side of the substrate and electrically coupled to the electrical circuit. Thus, electrical connection is established between the first side of the substrate and second side of the substrate.

6341853, Jan 29, 2002

Apr 28, 1998

09/067659

Joseph E. Scheffelin - San Diego CA
Mark E. Young - Escondido CA
Elizabeth Zapata - San Diego CA
Kenneth J. Courian - San Diego CA
George T. Kaplinsky - San Diego CA
David W. Swanson - Escondido CA
James E. Clark - Albany OR
Tofigh Khodapanah - San Diego CA

Hewlett-Packard Company - Palo Alto CA

B41J 2175

347 87

A closed ink replenishment system for replenishing the supply of ink in negative pressure spring-bag reservoirs in a printer/plotter. A tube runs between each cartridge reservoir and an auxiliary reservoir mounted to the printer/plotter frame to form the closed ink system. As ink is depleted from the spring-bag reservoir during printing operation, the negative pressure in the cartridge increases, drawing ink through the tube from the auxiliary reservoir into the cartridge until the negative pressure decreases to an equilibrium point. As a result, the volume of ink within the spring-bag reservoir remains substantially constant so long as there is ink remaining within the auxiliary reservoir. This maintains the print quality. The auxiliary reservoir is a flat bag mounted on a spring-biased platform, which acts as a height regulating system.

6350013, Feb 26, 2002

Aug 25, 2000

09/648121

Joseph E. Scheffelin - Poway CA
Melissa D. Boyd - Corvallis OR
James W. Ring - Blodgett OR
Mohammad Akhavain - Escondido CA
Janis Horvath - San Diego CA

Hewlett-Packard Company - Palo Alto CA

B41J 2155

347 49, 347 42

An inkjet printing system includes a mounting assembly and an inkjet printhead assembly. The mounting assembly includes a plurality of datums and the inkjet printhead assembly includes a carrier and a plurality of printhead dies each mounted on the carrier. The inkjet printhead assembly is mounted in the mounting assembly such that the carrier contacts at least one of the datums. Thus, positioning of the carrier relative to the mounting assembly is established.

6394580, May 28, 2002

Mar 20, 2001

09/812520

Joseph E. Scheffelin - Poway CA
Ernesto A. Garay - Gresham OR
Gerald Vincent Rapp - Escondido

Hewlett-Packard Company - Palo Alto CA

B41J 2155

347 50, 347 42

A wide-array inkjet printhead assembly includes a carrier including a substructure and a substrate mounted on the substructure, a plurality of printhead dies each mounted on the substrate, and an electrical interconnect adapted to communicate electrical signals between an electronic controller and the inkjet printhead assembly. The substrate has an electrical circuit formed therein such that the printhead dies are electrically coupled to the electrical circuit and the electrical interconnect is electrically coupled to the electrical circuit. As such, the substructure accommodates the electrical interconnect.

6409307, Jun 25, 2002

Feb 14, 2001

09/783676

Mohammad Akhavain - Escondido CA
Robert-Scott Melendrino Lopez - Escondido CA
Janis Horvath - San Diego CA
Noah Carl Lassar - San Diego CA
David McElfresh - San Diego CA
Brian J. Keefe - La Jolla CA
Joseph E. Scheffelin - Poway CA

Hewlett-Packard Company - Palo Alto CA

B41J 2155

347 42, 347 13, 347 49

An inkjet printhead assembly includes a substrate having a non-planar surface and a plurality of adhesive quantities each disposed on the non-planar surface of the substrate. As such, a plurality of printhead dies are each adhered to the non-planar surface of the substrate by one of the adhesive quantities. A thickness of at least one of the adhesive quantities varies from the thickness of another of the adhesive quantities such that the thickness of the adhesive quantities compensates for the non-planar surface of the substrate. Thus, the adhesive quantities support the printhead dies and establish a substantially coplanar relationship among the printhead dies.

6428141, Aug 6, 2002

Apr 23, 2001

09/840785

David K. Mc Elfresh - San Diego CA
Mohammad Akhavain - Escondido CA
Joseph E. Scheffelin - Poway CA

Hewlett-Packard Company - Palo Alto CA

B41J 215

347 40, 347 42, 347 49, 347 13

A carrier adapted to support at least one printhead die includes a substrate having at least one surface and at least one datum attached to the at least one surface of the substrate. The substrate includes a first material and the at least one datum is formed from a blank including a second material. As such, the at least one datum is adapted to position the carrier in at least one dimension.

6431683, Aug 13, 2002

Mar 20, 2001

09/812737

May Fong Ho - Escondido CA
Joseph E. Scheffelin - Poway CA
Mohammad Akhavain - Escondido CA
Brian J. Keefe - La Jolla CA
Janis Horvath - San Diego CA

Hewlett-Packard Company - Palo Alto CA

B41J 214

347 50, 347 58

A wide-array inkjet printhead assembly includes a carrier and a plurality of printhead dies each mounted on the carrier. The carrier includes a substructure and a substrate mounted on the substructure. The substrate includes a plurality of layers and has a plurality of conductive paths extending therethrough. As such, each of the printhead dies are mounted on the substrate and electrically coupled to at least one of the conductive paths of the substrate.