Patents by Inventor Albert Woffenden

Albert Woffenden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of manufacturing inkjet printhead
    Patent number: 10525701
    Abstract: A method of forming an inkjet printhead. The method includes the steps of: providing a metal alloy shim having a plurality of shim apertures; nitriding a surface of the shim; bonding the shim to a rigid elongate manifold having ink supply channels, such that each shim aperture is in fluid communication with a respective ink supply channel; and bonding printhead chips to the shim, thereby forming the inkjet printhead.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: January 7, 2020
    Assignee: Memjet Technology Limited
    Inventors: Jason Thelander, David Burke, Andrew Thomas, Simon Fielder, Michele Gimona, Albert Woffenden
  • METHOD OF MANUFACTURING INKJET PRINTHEAD
    Publication number: 20190308409
    Abstract: A method of forming an inkjet printhead. The method includes the steps of: providing a metal alloy shim having a plurality of shim apertures; nitriding a surface of the shim; bonding the shim to a rigid elongate manifold having ink supply channels, such that each shim aperture is in fluid communication with a respective ink supply channel; and bonding printhead chips to the shim, thereby forming the inkjet printhead.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 10, 2019
    Inventors: Jason Thelander, David Burke, Andrew Thomas, Simon Fielder, Michele Gimona, Albert Woffenden
  • Metal alloy shim for mounting printhead chips with high bonding strength
    Patent number: 10363736
    Abstract: An inkjet printhead includes: a rigid elongate manifold having ink supply channels extending along its length and a plurality of ink outlets defined therein; a shim attached to the manifold, the shim having a plurality of shim apertures for receiving ink from the ink outlets; and a plurality of printhead chips adhesively bonded directly to the shim, each printhead chip receiving ink from one or more of the ink outlets. The shim is formed of a metal alloy having a CTE of 5 ppm/° C. or less and includes an adhesion-promoting surface film layer.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: July 30, 2019
    Assignee: Memjet Technology Limited
    Inventors: Jason Thelander, David Burke, Andrew Thomas, Simon Fielder, Michele Gimona, Albert Woffenden
  • METAL ALLOY SHIM FOR MOUNTING PRINTHEAD CHIPS WITH HIGH BONDING STRENGTH
    Publication number: 20180370223
    Abstract: An inkjet printhead includes: a rigid elongate manifold having ink supply channels extending along its length and a plurality of ink outlets defined therein; a shim attached to the manifold, the shim having a plurality of shim apertures for receiving ink from the ink outlets; and a plurality of printhead chips adhesively bonded directly to the shim, each printhead chip receiving ink from one or more of the ink outlets. The shim is formed of a metal alloy having a CTE of 5 ppm/° C. or less and includes an adhesion-promoting surface film layer.
    Type: Application
    Filed: July 31, 2018
    Publication date: December 27, 2018
    Inventors: Jason Thelander, David Burke, Andrew Thomas, Simon Fielder, Michele Gimona, Albert Woffenden