The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1989
Filed:
Feb. 29, 1988
Nobuyuki Kuwabara, Tokyo, JP;
Ko Hasegawa, Yokohama, JP;
Yuichi Watanabe, Machida, JP;
Haruhiko Moriguchi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A driving method for a thermal head having plural heat generating elements for image recording on a recording medium comprises a step of detecting the presence of past, present and future heating signals in an area, in at least four directions around the heat generating element when the power is supplied to a heat generating element according to a heating signal and a step of controlling the supply energy to the heat generating element in response to the result of the detection, if the heating signals are present in all of the detecting area, for minimizing the supply energy to the heat generating element in comparison with a case in which the heating signals are not present in all of the detecting area.