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. 31, 2012
Filed:
Dec. 29, 2009
Emi Ninomiya, Tokyo, JP;
Hiroshi Yamada, Tokyo, JP;
Katsuhiko Igarashi, Tokyo, JP;
TDK Corporation, Chuo-ku, Tokyo, JP;
Abstract
To provide a thermal head which provides an excellent adhesion between the common electrode and the heat element, and in which the content of Pb is sufficiently reduced. A thermal head, comprising a substrate, a glaze layerprovided on the substrate, a common electrodeprovided on the glaze layer, a heat elementprovided on the common electrodeand the glaze layer, and lead electrodesandprovided on the heat element, wherein the common electrodeincludes an electrically conductive material composed of metal and a glass frit, and the glass frit contains 15 to 35% by mass of ZnO, 14 to 34% by mass of SiO, 2 to 25% by mass of AlO, 2 to 15% by mass of TiO, 5 to 25% by mass of CaO, and 7 to 27% by mass of BaO.