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:
Jun. 17, 1997
Filed:
Jun. 02, 1995
Edward R Moynihan, Lebanon, NH (US);
David W Gailus, Merrimack, NH (US);
Robert G Palifka, Orford, NH (US);
Paul A Hoisington, Norwich, VT (US);
Nathan P Hine, South Strafford, VT (US);
David Adams-Brady, Meriden, NH (US);
Melvin L Biggs, Norwich, VT (US);
Marlene M McDonald, Enfield, NH (US);
Steven H Barss, Wilmot Flat, NH (US);
Diane Mackay, Corinth, VT (US);
Bruce A Paulson, Newport, NH (US);
Stephen C Mackay, Corinth, VT (US);
Spectra, Inc., Hanover, NH (US);
Abstract
In the embodiments of the simplified ink jet head described in the specification an orifice plate has specially profiled orifice openings to assure axial projection of drops when ink is supplied from an asymmetric ink path leading to the orifice. For this purpose the orifice includes cylindrical ink inlet and outlet portions with the ink outlet portion having a smaller diameter and a shorter length than the inlet portion and a tapered conical portion joining the ink inlet portion and the ink outlet portion. Preferably, the diameter of the inlet portion is no more than about twice the diameter of the outlet portion.