Patents by Inventor Keitaro Karoishi

Keitaro Karoishi 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).

  • Thermal head, method of manufacturing thermal head, and printer equipped with thermal head
    Patent number: 8624946
    Abstract: A thermal head has a support substrate including a concave portion formed in a front surface thereof. An upper substrate is bonded in a stacked state to the front surface of the support substrate and includes a convex portion formed within a region corresponding to the concave portion. A heating resistor is provided on a front surface of the upper substrate at a position straddling the convex portion. A pair of electrodes is provided on both sides of the heating resistor. At least one of the pair of electrodes has a thin portion and a thick portion. The thin portion is connected to the heating resistor at one of a side surface and a top surface of the convex portion in the region corresponding to the concave portion. The thick portion is connected to the heating resistor and is formed thicker than the thin portion.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: January 7, 2014
    Assignee: Seiko Instruments Inc.
    Inventors: Toshimitsu Morooka, Keitaro Karoishi, Noriyoshi Shoji, Norimitsu Sanbongi
  • THERMAL HEAD AND METHOD OF MANUFACTURING THE SAME, AND PRINTER
    Publication number: 20120212557
    Abstract: Adopted is a thermal head, including: a support substrate including a concave portion formed in a front surface thereof; an upper substrate, which is bonded in a stacked state to the front surface of the support substrate and includes a convex portion formed at a position corresponding to the concave portion; a heating resistor provided on a front surface of the upper substrate at a position straddling the convex portion; and a pair of electrodes provided on both sides of the heating resistor, in which at least one of the pair of electrodes include: a thin portion, which is connected to the heating resistor at a distal end surface of the convex portion in a region corresponding to the concave portion; and a thick portion, which is connected to the heating resistor and is formed thicker than the thin portion.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 23, 2012
    Inventors: Toshimitsu MOROOKA, Keitaro Karoishi, Noriyoshi Shoji, Norimitsu Sanbongi