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:
May. 21, 1991
Filed:
Jun. 05, 1989
Applicant:
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
400237 ; 400241 ;
Abstract
Ink in an ink ribbon contains per 100 parts by weight of ink, 0.1-10 parts by weight of an adsorption-type corrosion suppressor. The adsorption-type corrosion suppressor may be one or more of, the following compounds: amines of the formula R--NH.sub.2, RR'--NH, RR'R'--N (where R, R' and RR' are alkyl groups), thiourea and its derivatives, benzotriazole and its derivatives, thiazole, thioamides and thiosemicarbazide. In another aspect of the invention, the ink contains an organic pigment as coloring material, said ink containing 5.0-10.0 parts by weight of graphite per 100 parts by weight of ink.