U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Thermal plate making apparatus

Patent 5216951 Issued on June 8, 1993. Estimated Expiration Date: Icon_subject October 29, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Printing-plate preparation apparatus employed in screen printing machine including a non-adhesive platen surface and a manuscript reading unit.
Patent #: 4957378
Issued on: 09/18/1990
Inventor: Shima

Thermal head
Patent #: 5021806
Issued on: 06/04/1991
Inventor: Sugiyama

Image printing device
Patent #: 5045866
Issued on: 09/03/1991
Inventor: Chiba, et al.

Device for cooling thermal head
Patent #: 5053792
Issued on: 10/01/1991
Inventor: Une

Thermal transfer process with improved recording head life
Patent #: 5105203
Issued on: 04/14/1992
Inventor: Kuwabara, et al.

Thick film type thermal head and thermal recording device Patent #: 5157414
Issued on: 10/20/1992
Inventor: Seino, et al.

Inventors

Assignee

Application

No. 968452 filed on 10/29/1992

US Classes:

101/128.4, Manufacture347/206Heating resistive elements

Examiners

Primary: Burr, Edgar S.
Assistant: Raciti, Eric P.

Attorney, Agent or Firm

Foreign Patent References

  • 146786 JP 11/13/1981
  • 155075 JP 09/13/1984
  • 48398 JP 03/13/1985
  • 199656 JP 10/13/1985
  • 208244 JP 10/13/1985
  • 236755 JP 11/13/1985
  • 58555 JP 03/13/1988
  • 221056 JP 09/13/1988
  • 237963 JP 10/13/1988
  • 114785 JP 05/13/1991

International Class

B41J 002/335

Foreign Application Priority Data

1990-06-14 JP

Abstract

A thermal plate making apparatus including a thermal head having a plurality of heating elements arranged in a line. Each element has a shape having substantially four corners. And a protruding portion for enhancing heat generation is formed at each of at least two diagonal corners of the element.

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