Patents by Inventor Kang Leng Tan

Kang Leng Tan 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).

  • Calibrating printing pens of print head assemblies
    Patent number: 10857808
    Abstract: Examples relating to calibrating printing pens of a print bead assembly in a printer are described. For example, techniques for calibrating a printing pen includes detecting position of a first symbol and a second symbol of a pattern from amongst multiple patterns in an alignment pattern, where each pattern is associated with art ideal deviation and the symbols are printed in a juxtaposed position. The ideal deviation is a predefined value of deviation between the symbols when the printing pen is aligned. Thereafter, determining an actual deviation, due to misalignment in the printing pen, between the symbols. Further the technique includes establishing a relation between the actual deviation and the ideal deviation for the multiple patterns and determining a value of the ideal deviation for a zero value of the actual deviation. The value of the ideal deviation is a corrective value of alignment for the printing pen.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: December 8, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andy/Prima Kencana, Peow Ng, Kang Leng Tan, Zixing Yao
  • Printer to determine calibration pattern
    Patent number: 10589554
    Abstract: A printer is operated to determine an attribute of a field of view of the scan sensor. A calibration test pattern is determined based on the field of view (e.g., size of the field of view relative to dimension of individual bar in pattern).
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: March 17, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chin Hung Koh, Tong Nam Samuel Low, Kang Leng Tan
  • CALIBRATING PRINTING PENS OF PRINT HEAD ASSEMBLIES
    Publication number: 20200001617
    Abstract: Examples relating to calibrating printing pens of a print bead assembly in a printer are described. For example, techniques for calibrating a printing pen includes detecting position of a first symbol and a second symbol of a pattern from amongst multiple patterns in an alignment pattern, where each pattern is associated with art ideal deviation and the symbols are printed in a juxtaposed position. The ideal deviation is a predefined value of deviation between the symbols when the printing pen is aligned. Thereafter, determining an actual deviation, due to misalignment in the printing pen, between the symbols. Further the technique includes establishing a relation between the actual deviation and the ideal deviation for the multiple patterns and determining a value of the ideal deviation for a zero value of the actual deviation. The value of the ideal deviation is a corrective value of alignment for the printing pen.
    Type: Application
    Filed: February 7, 2017
    Publication date: January 2, 2020
    Inventors: Andy/Prima Kencana, Peow Ng, Kang Leng Tan, Zixing Yao
  • PRINTER TO DETERMINE CALIBRATION PATTERN
    Publication number: 20180326768
    Abstract: A printer is operated to determine an attribute of a field of view of the scan sensor. A calibration test pattern is determined based on the field of view (e.g., size of the field of view relative to dimension of individual bar in pattern).
    Type: Application
    Filed: March 17, 2016
    Publication date: November 15, 2018
    Inventors: Chin Hung Koh, Tong Nam Samuel Low, Kang Leng Tan