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:
Aug. 06, 2002
Filed:
Feb. 13, 2001
Shinobu Obata, Kyoto, JP;
Yasuhiro Yoshikawa, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
The thermal printhead according to the present invention includes an elongated rectangular substrate including an attaching surface and a non-attaching surface, and a heat sink plate attached to the attaching surface of the substrate. The non-attaching surface of the substrate is provided with a common electrode, a plurality of individual electrodes and a heating resistor. The heating resistor is covered with an insulating protective layer and an opaque conductive protective layer. The thermal printhead includes a positioning indicia. In the method of making the thermal printhead according to the present invention, an image of the positioning indicia is taken by an image pick-up device and imaged on a display of a monitor. Two reference lines are set on the display of the monitor. Positioning of the substrate relative to the heat sink plate is performed by moving the substrate so that the reference line of the positioning indicia coincides with the reference line on the display of the monitor.