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. 09, 1991
Filed:
Jul. 11, 1989
Applicant:
Inventors:
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; B41J / ;
U.S. Cl.
CPC ...
346 / ; 400120 ; 400207 ;
Abstract
A constant tension device for peeling an ink ribbon away from a printing medium during a correction operation in which ink printing produced by a thermal transfer printer is erased, a roller mounted on the printer is pressed against another roller mounted on a ribbon cassette, an ink ribbon is trained over the roller mounted on the ribbon cassette and between the two rollers, and the ink ribbon is stretched by the rotation of the roller mounted on the ribbon cassette which is rotated with a constant speed so as to provide a constant tension so that the ribbon is reliably peeled away from the printing medium.