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:
Dec. 30, 1986
Filed:
Feb. 22, 1985
Applicant:
Inventor:
Eric A Houston, Cambridge, MA (US);
Assignee:
Centronics Data Computer Corp., Hudson, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; B41J / ;
U.S. Cl.
CPC ...
400232 ; 400229 ;
Abstract
A ribbon feed mechanism for a bi-directional printer that produces a constant relative ribbon to print-head velocity. The invention produces the constant relative velocity by coupling the ribbon to the print-head through a reciprocating shuttle, which moves in an opposite direction to and at one-half the speed of the print-head. As the shuttle reciprocates it engages the ribbon such that a constant length is maintained between the ribbon supply and the print-head and between the print-head and the ribbon take-up. The ribbon is taken up at a constant speed. By this method, the relative ribbon to print-head speed is fixed at the ribbon take-up speed.