Patents by Inventor Wee Hien Tok

Wee Hien Tok 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).

  • Patent number: 11787651
    Abstract: According to examples, an apparatus may include a processor and a memory on which are stored computer-readable instructions that, when executed by the processor, may cause the processor to receive a first sheet count before execution of a print job, receive a second sheet count after execution of the print job, and determine a number of sheets printed for the print job based on the first sheet count and the second sheet count. The processor may update a pick mechanism activation counter value based on the determined number of printed sheets. Based on a determination that the updated pick mechanism activation counter value is greater than or equal to a predetermined threshold value, the processor may cause a pick mechanism to be actuated to sense a media stack height of print media.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: October 17, 2023
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Wee Hien Tok, Yong Seng Pun, Wei Lit Teoh
  • Publication number: 20230141085
    Abstract: According to examples, an apparatus may include a processor and a memory on which are stored computer-readable instructions that, when executed by the processor, may cause the processor to receive a first sheet count before execution of a print job, receive a second sheet count after execution of the print job, and determine a number of sheets printed for the print job based on the first sheet count and the second sheet count. The processor may update a pick mechanism activation counter value based on the determined number of printed sheets. Based on a determination that the updated pick mechanism activation counter value is greater than or equal to a predetermined threshold value, the processor may cause a pick mechanism to be actuated to sense a media stack height of print media.
    Type: Application
    Filed: November 8, 2021
    Publication date: May 11, 2023
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Wee Hien Tok, Yong Seng Pun, Wei Lit Teoh
  • Publication number: 20230144053
    Abstract: In an example, a method may include determining a range of motion of a pick arm during lifting of the pick arm from a media stack position to a hard stop position in an image forming apparatus. The pick arm may have a pick roller at one end for picking a media sheet from a media stack and pivotally mounted at an opposite end to enable angular movement of the pick arm relative to the media stack. Further, the method may include estimating a height of the media stack based on the determined range of motion of the pick arm from the media stack position to the hard stop position. Furthermore, the method may include indicating an amount of media sheets remaining in the media stack corresponding to the estimated height.
    Type: Application
    Filed: April 15, 2020
    Publication date: May 11, 2023
    Inventors: Wei Lit Teoh, Seng San Koh, Wee Hien Tok
  • Patent number: 11267263
    Abstract: An apparatus (102) with moveable platen ribs (110,112), is described. The apparatus comprises a platen (108) for supporting print media (106). The platen extends in a plane in which the print media is conveyed to be printed. The apparatus further includes a first set of platen ribs (110) and a second set of platen ribs (112) each mounted on the platen. The second set of platen ribs are moveable approximately perpendicular to the plane.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 8, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Wee Hien Tok, Wesley Chia, Xu-Gang Wang, Wei Lit Teoh
  • Patent number: 10647131
    Abstract: A method for fluid-density modulated auto-duplexing is disclosed. This method determines when a final swath of a printing operation on a surface of a media occurs within a predefined distal end portion of the media. An estimated media dry time after the final swath in the predefined distal end portion is determined to be greater than a predetermined time. The estimated dry time is capped to a predetermined minimum media dry time and a course of action for a feed mechanism is selected to reduce curling and cockling of the media. Furthermore, a non-transitory computer readable medium and a printer having fluid-density modulated auto-duplexing are also disclosed.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: May 12, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Wei Lit Teoh, Hua Zhou, Wee Hien Tok, Hwee Boon Tan, Kok Chai Chong
  • Patent number: 10647132
    Abstract: In one example, a device for partially dried inkjet media output management includes a starwheel positioned on a first side between a number of rollers positioned on a second side to corrugate partially dried inkjet media between the starwheel and the number of rollers.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: May 12, 2020
    Assignee: Hewlett-Packard Development Company, L. P.
    Inventors: Jun Hong Goh, Fei Nie, Wee Hien Tok, Wei Lit Teoh
  • Publication number: 20200130384
    Abstract: An apparatus (102) with moveable platen ribs (110,112), is described. The apparatus comprises a platen (108) for supporting print media (106). The platen extends in a plane in which the print media is conveyed to be printed. The apparatus further includes a first set of platen ribs (110) and a second set of platen ribs (112) each mounted on the platen. The second set of platen ribs are moveable approximately perpendicular to the plane.
    Type: Application
    Filed: April 17, 2017
    Publication date: April 30, 2020
    Inventors: Wee Hien Tok, Wesley Chia, Xu-Gang Wang, Wei Lit Teoh
  • Publication number: 20190105922
    Abstract: A method for fluid-density modulated auto-duplexing is disclosed. This method determines when a final swath of a printing operation on a surface of a media occurs within a predefined distal end portion of the media. An estimated media dry time after the final swath in the predefined distal end portion is determined to be greater than a predetermined time. The estimated dry time is capped to a predetermined minimum media dry time and a course of action for a feed mechanism is selected to reduce curling and cockling of the media. Furthermore, a non-transitory computer readable medium and a printer having fluid-density modulated auto-duplexing are also disclosed.
    Type: Application
    Filed: June 22, 2016
    Publication date: April 11, 2019
    Inventors: Wei Lit Teoh, Hua Zhou, Wee Hien Tok, Hwee Boon Tan, Kok Chai Chong
  • Publication number: 20190092049
    Abstract: In one example, a device for partially dried inkjet media output management includes a starwheel positioned on a first side between a number of rollers positioned on a second side to corrugate partially dried inkjet media between the starwheel and the number of rollers.
    Type: Application
    Filed: June 23, 2016
    Publication date: March 28, 2019
    Inventors: Jun Hong Goh, Fei Nie, Wee Hien Tok, Wei Lit Teoh