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:
Oct. 13, 1987
Filed:
Dec. 09, 1985
Jesse R Crowe, Mt. Kisco, NY (US);
Derek B Dove, Mt. Kisco, NY (US);
Kwang K Shih, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An improved resistive ribbon for thermal transfer priting in which a coating is located on the resistive layer in order to reduce contact resistance between the ribbon and printhead, thereby reducing undesirable heating at the contact region between the ribbon and printhead. The coating is comprised of compositions selected from the group consisting of Cr-N, Sn-SnO, ITO, AlN and Al-Al.sub.2 O.sub.3, where the resistivity of the coating is significantly less than the resistivity of the resistive layer of the ribbon. Further, the sheet resistivity of the coating is greater than the sheet resistivity of the resistive layer. The rest of the resistive ribbon can be comprised of any combination of the usually employed layers, such as a current return layer, a release layer for facilitating the transfer of ink from the ribbon to a carrier, and the ink layer itself.