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:
Jul. 02, 2013
Filed:
Jul. 20, 2011
Toshimitsu Morooka, Chiba, JP;
Keitaro Koroishi, Chiba, JP;
Noriyoshi Shoji, Chiba, JP;
Norimitsu Sanbongi, Chiba, JP;
Toshimitsu Morooka, Chiba, JP;
Keitaro Koroishi, Chiba, JP;
Noriyoshi Shoji, Chiba, JP;
Norimitsu Sanbongi, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A thermal head comprises a first substrate having a concave portion, a second substrate mounted on the first substrate and covering the concave portion to form with the first substrate a cavity portion, a heating resistor provided on a surface of the second substrate, and a pair of electrodes connected to the heating resistor for supplying power to the heating resistor. At least one of the pair of electrodes has a low thermal conductivity portion in a region opposed to the cavity portion. The low thermal conductivity portion is made of a material having a thermal conductivity lower than a thermal conductivity in other regions of the pair of electrodes and having an electrical resistance lower than an electrical resistance of the heating resistor.