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:
May. 31, 2022
Filed:
Jun. 08, 2020
Rohm Co., Ltd., Kyoto, JP;
Taro Hayashi, Kyoto, JP;
ROHM Co., Ltd., Kyoto, JP;
Abstract
The present invention provides a thermal print head capable of better performing printing on a printing medium; the thermal print head including: a substrate (), formed with single crystal semiconductor; a resistor layer (), including a plurality of heating portions () arranged in a main scan direction; and a wiring layer (), configuring a charging path to the plurality of heating portions. The substrate includes: a main surface (), being a surface opposite to the resistor layer; and a convex portion (), disposed as protruding from the main surface and extending in the main scan direction. The convex portion includes: an inclining surface (), inclining relative to the main surface and extending in a linear manner when viewing from the main scan direction; and a curving surface (), disposed, in a protruding direction of the convex portion, on a position farther away from the main surface than the inclining surface, and curving in a manner that protrudes toward the protruding direction. Each of the plurality of heating portions includes a heating curving portion () formed on a portion corresponding to the curving surface.