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:
Nov. 12, 1996
Filed:
Feb. 23, 1995
Applicant:
Inventor:
Paul Morgavi, La Ciotat, FR;
Assignee:
Gemplus Card International, Gemenos, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ; B65H / ;
U.S. Cl.
CPC ...
2425342 ; 242543 ;
Abstract
A system controls the winding of a ribbon on a receiver reel rotationally driven by a stepping motor. The ribbon has successive indicators at regularly spaced intervals on the ribbon. A detection device, having two spaced optical cells at a predetermined distance between them, detects the passage of an indicator between the cells. A microprocessor counts the number of steps of the stepping motor that have been necessary to achieve movement of an indicator between the optical cells. The microprocessor also computes the number of pulses to be applied to the stepping motor per unit time to achieve a constant speed of the ribbon as it passes between cells.