Hewlett-packard Company

Hewlett-packard Development Company, L.p.

Dale Dean Timm, Jr

Joseph Edward Scheffelin

David K McElfresh

Brian J Keefe

Noah C Lassar

Mohammad Akhavain

Janis Horvath

Winthrop D Childers

Norman E Pawlowski

Kenneth E Trueba

David W Swanson

James E Clark

Paul Mark Haines

Joseph R Elliot

Ronald J Ender

Marshall Field

David Herbert Donovan

Craig L Malik

Peter R Stokes

Charles L Thierheimer, Jr

William R Boucher

William Scott Colburn

Gerald Vincent Rapp

Ernesto A Garay

Shilin Guo

Robert-Scott Melendrino Lopez

David Luis Pereira

Tanya Schneider

John A Dangelawicz

Behnam Baslani

A method for double-sided printing may include ejecting printing fluid from a fluid ejector to a platen configured to receive print media, the platen supporting a nonabsorbent substrate. In any sequence, a first print media side and a second print media side may be printed by ejecting printing fluid from the fluid ejector to the first print media side, and contacting the second print media side with the nonabsorbent substrate to transfer printing fluid from the nonabsorbent substrate to the second print media side. A method for double-side printing may further include increasing the contact between the second print media side with the nonabsorbent substrate to increase transfer of printing fluid.

Double-sided printing system

Embodiments of an apparatus including a rolling contact bearing are disclosed.

Bearing

A printhead assembly includes a carrier having a first side and a second side contiguous with the first side, a plurality of printhead dies each mounted on the first side of the carrier, an electrical circuit including a first portion disposed on the first side of the carrier and a second portion disposed on the second side of the carrier, and a plurality of electrical connectors each electrically coupled to the first portion of the electrical circuit and one of the printhead dies. The electrical circuit has a plurality of openings defined in the first portion thereof such that each of the openings are sized to accommodate one of the printhead dies, and has a first side facing the carrier and a second side opposite the first side thereof such that each of the electrical connectors are electrically coupled to the second side of the electrical circuit and one of the printhead dies.

Electrical circuit for printhead assembly

A wide-array inkjet printhead assembly includes a carrier having a first side and a second side contiguous with the first side, and a plurality of printhead dies each mounted on the first side of the carrier. An electrical circuit is disposed on the first side and the second side of the carrier. As such, a plurality of electrical connectors are each electrically coupled to the electrical circuit and one of the printhead dies.

Electrical circuit for wide-array inkjet printhead assembly

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.

Coplanar mounting of printhead dies for wide-array inkjet printhead assembly

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.

Electrical interconnection for wide-array inkjet printhead assembly

An inkjet printer includes at least one print cartridge mounted in a scanning carriage having an ink interconnect coupled, via a flexible tube, to an ink output of a stationary pressure regulator. An ink input of the pressure regulator is connected, via a tube, to a stationary ink supply having replaceable ink cartridges. The print cartridge contains one or more printheads and one or more ink interconnects, one interconnect for each color ink which is printable by the print cartridge. To avoid ink pressure spikes due to the momentum of the ink in the flexible ink tube as the carriage scans across the medium, a flexible diaphragm is incorporated in the ink chamber of the print cartridge. The print cartridge is inserted in the scanning carriage so as to create a fluid coupling between the printhead and the flexible tube leading to the scanning carriage.

Printer having multi-chamber print cartridges and off-carriage regulator

A thermal ink-jet (TIJ) pen including a plastic frame structure and side covers. To attach the covers to the plastic frame without the use of adhesives, screws, thermal or ultrasonic processes, protruding metal tabs from the cover are press fit into corresponding recess features of the plastic frame. The tabs are designed to displace plastic surrounding the frame recesses to lock the cover to the frame. The resulting frame/cover seam resists shear, axial and transverse forces that occur as a result of externally applied loads to the pen.

Thermal ink-jet pen with a plastic/metal attachment for the cover

In one embodiment of the invention, a flexible tape has formed on it conductors for being connected to a printhead substrate. The conductors on the tape are coated with an insulating layer, and exposed ends of the conductors extend from the layer. A headland is formed on a plastic print cartridge for receiving the printhead substrate having the exposed conductors extending from one or more edges of the printhead substrate. An adhesive bead is formed on the headland so that when the printhead is properly positioned on the headland, the adhesive contacts the conductors to encapsulate and insulate one exposed side of the conductors. A second adhesive or encapsulant bead is deposited over the opposite side of the conductors to encapsulate and insulate the remaining exposed regions of the conductors. In this manner, the combined insulating action of the insulating layer and the two insulating adhesive beads prevents the conductors from being shorted together by ink which may flow in the vicinity of the conductors.

Structure and method for preventing ink shorting of conductors connected

Growing community of inventors

Solana Beach, CA, United States of America

Dale Dean Timm, Jr