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:
Apr. 20, 2021
Filed:
Mar. 29, 2018
Kyocera Corporation, Kyoto, JP;
Yoichi Moto, Kirishima, JP;
KYOCERA CORPORATION, Kyoto, JP;
Abstract
A thermal head of the present disclosure includes a substrate, a heat generating unit, an electrode, a covering layer, and a covering member. The heat generating unitis positioned above the substrate. The electrode is positioned above the substrate and connected to the heat generating unit. The covering layercovers at least a part of the electrode when viewed in plan. The covering memberis positioned on the covering layer. The covering layerhas an upper surfaceand a lateral surfacethat is positioned on a side of the heat generating unit. An arithmetic-average surface roughness Ra of the lateral surfaceis higher than an arithmetic-average surface roughness Ra of the upper surface