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:
Sep. 05, 2000
Filed:
Mar. 31, 1999
Makoto Kashiwaya, Kanagawa, JP;
Junichi Yoneda, Shizuoka, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The thermal head having a protective film of a heating element, the protective film comprising at least one protective layer including a carbon-based carbon protective layer, wherein an oxygen amount in an interface between the carbon protective layer and a lower layer formed under the carbon protective layer is not more than 20 atm %. The thermal head includes a protective film which has significantly reduced corrosion and wear, which is free from cracking and peeling due to heat and mechanical impact and which allows the thermal head to have sufficient durability to ensure that the thermal recording of high-quality images is consistently performed over an extended period of time. Even for an application in which recording under high-energy and high-pressure conditions is performed on a thermal film using a high rigid substrate to be employed in the medical use and the like, the thermal head also has sufficient durability to exhibit high reliability over an extended period of time.