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:
Dec. 18, 2001
Filed:
Oct. 16, 2000
Rohm Co., Ltd., Kyoto, JP;
Abstract
A thermal printhead (A) includes an insulating substrate (,) having an upper surface (,) and a side surface (,), and a heat retaining glaze layer (,) formed on the substrate (,). A heating resistor (,) is formed on the glaze layer (,). The thermal printhead (A) further includes a common electrode (,) and a plurality of individual electrodes. The common electrode (,) has a plurality of teeth (,) connected to the heating resistor (,), and a connecting portion (,) which connects the teeth (,) with each other. An electrode auxiliary layer (,) is formed on the connecting portion (,). The heating resistor (,) and the electrode auxiliary layer (,) are covered with an overcoat layer (,) which is, in turn, covered with a protective layer (,). The connecting portion (,) of the common electrode (,) directly contacts both the glaze layer (,) and the upper surface (,) of the substrate.