Patents Assigned to Riso Kajaku Corporation
  • Patent number: 6236424
    Abstract: A thick film thermal head for making a stencil by thermally perforating a stencil material includes an electrical insulating substrate and a glaze layer superposed on a heat radiating plate in this order, a resistance heater formed on the glaze layer to continuously extend in a main scanning direction, a plurality of electrodes of at least two lines which extend in a direction intersecting the main scanning direction in contact with the resistance heater and are alternately arranged in the main scanning direction, and a protective layer which covers exposed part of the resistance heater and the electrodes.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: May 22, 2001
    Assignee: Riso Kajaku Corporation
    Inventor: Jun Nakamura