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. 03, 2001
Filed:
Mar. 27, 2000
Taihei Noshita, Shizuoka, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A thermal head has a protective coating of heating elements. The protective coating includes an insulating protective layer and an electrically conductive protective layer formed above the insulating protective layer. The electrically conductive protective layer covers at least a region of the insulating protective layer under which an under-glaze heat-accumulating layer is located and does not overlie at least one of the negative and positive electrode layers in other regions than the region. The thermal head can prevent abnormal current flow due to pinholes of the insulating protective layer formed under the electrically conductive protective layer, exhibit high reliability over an extended period of time and perform thermal recording of high-quality images consistently over an extended period of operation.