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:
Feb. 11, 1997
Filed:
Oct. 11, 1995
Applicant:
Inventor:
Gianpaolo Cavagnolo, Milan, IT;
Assignee:
Bull HN Information Systems Italia S.p.A., Turin, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
400247 ; 400194 ; 400703 ; 324686 ;
Abstract
An endless ink ribbon cartridge with protected splice of the endless ribbon, wherein a reactance detector element housed in the cartridge at a location close to a predetermined travel path of the ink ribbon increases its reactance as a conductive strip disposed on the ribbon at a predetermined location relative to the splice moves close past the detector element, the reactance increase being detected by a protection arrangement external of the cartridge to prevent printing operations from being carried out through said splice.