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:
Oct. 04, 2011
Filed:
Mar. 31, 2005
Applicants:
Duccio Spartaco Sassano, Arnad, IT;
Alessandro Scardovi, Ivrea, IT;
Giancarlo Martina, Arnad, IT;
Inventors:
Assignee:
Telecom Italia S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/19 (2006.01); B41J 2/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
Ink jet print head comprising a substrate with an upper surface and a lower surface; a plurality of actuators with ejection chambers and ink supply passages, an ink distribution slot formed in the substrate between the lower surface and the upper surface; a manifold formed in the substrate of the upper surface around the slot for the feed to the actuators; and a plurality of bubble prevention elements formed in the feed manifold. The plurality of bubble prevention elements is provided only for a marginal set of actuators remote from the distribution slot.