Patents by Inventor Masakazu Hoda

Masakazu Hoda 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).

  • Electron beam formation of a thermal head using titanium silicide
    Patent number: 4705697
    Abstract: Disclosed is a thermal head for thermal recording, which comprises as the heat-generating resistor a dense thin layer having a composition represented by the following formula:Ti.sub.x Si.sub.y O.sub.zwhereinx is a number of from 0.25 to 0.45, y is a number of from 0.25 to 0.40 and z is a number of from 0.25 to 0.40, with the proviso that the sum of x, y and z is equal to 1.This heat-generating resistor has a large specific resistance and generates a large quantity of heat per unit electric current, and in this heat-generating resistor, deviation of the temperature is small and the heat-generating resistor is tightly boned to an electric conductor. Therefore, the printing operation can be performed stably for a long period.This heat-generating resistor is formed by depositing a thin film on a substrate by subjecting titanium silicide or a combination of silicon and titanium to sputtering or electron beam deposition in a reduced-pressure atmosphere containing oxygen.
    Type: Grant
    Filed: June 25, 1986
    Date of Patent: November 10, 1987
    Assignee: Kyocera Corporation
    Inventors: Yasuo Nishiguchi, Keijirou Minami, Masakazu Hoda
  • Thermal head and method for fabrication thereof
    Patent number: 4701769
    Abstract: Disclosed is a thermal head for thermal recording, which comprises as the heat-generating resistor a dense thin layer having a composition represented by the following formula:Ti.sub.x Si.sub.y O.sub.zwherein x is a number of from 0.25 to 0.45, y is a number of from 0.25 to 0.40 and z is a number of from 0.25 to 0.40, with the proviso that the sum of x, y and z is equal to 1.This heat-generating resistor has a large specific resistance and generates a large quantity of heat per unit electric current, and in this heat-generating resistor, deviation of the temperature is small and the heat-generating resistor is tightly boned to an electric conductor. Therefore, the printing operation can be performed stably for a long period.This heat-generating resistor is formed by depositing a thin film on a substrate by subjecting titanium silicide or a combination of silicon and titanium to sputtering or electron beam deposition in a reduced-pressure atmosphere containing oxygen.
    Type: Grant
    Filed: August 14, 1985
    Date of Patent: October 20, 1987
    Assignee: Kyocera Corporation
    Inventors: Yasuo Nishiguchi, Keijirou Minami, Masakazu Hoda