Patents by Inventor Pean Lim

Pean Lim 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 forming a manifold in a substrate and printhead substructure having the same
    Patent number: 6641745
    Abstract: A method of forming a manifold through a substrate of a printhead substructure is disclosed. The substrate has an ink reservoir-facing side and an opposing transducer-supporting side. The transducer-supporting side of the substrate is introduced to an etchant. A laser beam is used to irradiate the etchant contacting side of the substrate. The irradiated areas of the substrate are thereby etched to define a first portion of the manifold therein. A second portion of the manifold is formed, preferably by sand blasting, to connect to the first portion. A printhead substructure that includes a substrate having a manifold formed according to the method is also disclosed.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: November 4, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kee Cheong Tan, Pean Lim, Kiong Chin Chng
  • Method of forming a manifold in a substrate and printhead substructure having the same
    Publication number: 20030095166
    Abstract: A method of forming a manifold through a substrate of a printhead substructure is disclosed. The substrate has an ink reservoir-facing side and an opposing transducer-supporting side. The transducer-supporting side of the substrate is introduced to an etchant. A laser bean is used to irradiate the etchant contacting side of the substrate. The irradiated areas of the substrate are thereby etched to define a first portion of the manifold therein. A second portion of the manifold is formed, preferably by sand blasting, to connect to the first portion. A printhead substructure that includes a substrate having a manifold formed according to the method is also disclosed.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 22, 2003
    Inventors: Kee Cheong Tan, Pean Lim, Kiong Chin Chng
  • Method for cleaning debris off UV laser ablated polymer, method for producing a polymer nozzle member using the same and nozzle member produced thereby
    Publication number: 20030052101
    Abstract: A method of cleaning a polymer surface of debris deposited on the polymer surface as a result of laser ablation of the polymer surface using a UV laser beam is disclosed. Cleaning is carried out by irradiating the polymer surface using a Nd:YAG laser beam of a predetermined fluence. A method for manufacturing a polymer nozzle member of an inkjet printhead where the above cleaning method is used to clean a polymer film after the polymer film has been UV laser ablated to form orifices therethrough is also disclosed. A nozzle member that is manufactured according to the manufacturing method is also disclosed.
    Type: Application
    Filed: September 14, 2001
    Publication date: March 20, 2003
    Inventors: Jianhui Gu, Puay Khim Lim, Pean Lim