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:
Jul. 21, 1999
Junichi Yoneda, Shizuoka, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
There is provided a thermal head having a protective film including a carbon-based protective layer and a lower insulating protective layer which is composed of one or more sub-layers and formed below the carbon-based protective layer, wherein at least one of the sub-layers of the lower protective layer contains not more than 5 atm % of oxygen. The protective layer has significantly reduced corrosion and wear and is protected from cracking and peeling, whereupon the thermal head obtained can have a sufficient durability to ensure that high reliability is exhibited over an extended period of time to perform thermal recording of high-quality images consistently over an extended period of operation.