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. 13, 2003
Filed:
May. 30, 2001
Applicant:
Inventors:
Andrea Garramone, Turin, IT;
Ettore Quattrini, Binasco, IT;
Roberto Boggio, San Giorgio Canavese, IT;
Assignee:
Compuprint SpA, Turin, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/25 ;
U.S. Cl.
CPC ...
B41J 2/25 ;
Abstract
A needle printing head comprising a support ( ) able to axially guide a plurality of printing needles ( ), each of which has one end attached to a mobile armature ( ) of a corresponding actuation electromagnet ( ) having a ferromagnetic core ( ) provided with polar extensions. A separation element ( ) is interposed between the mobile armatures ( ) and the corresponding polar extensions. The separation element ( ) is made of a metal material and comprises elements ( ) able to reduce the effects of the eddy currents which are generated by the energizing of every electromagnet ( ).