Simplified ink jet head

US6450627B1 · kind B1 · utility

Assignee

• Spectra Group Limited, Inc. · US

Inventors

• Edward R. Moynihan · Plainfield, US
• David Gailus · Merrimack, US
• Robert G. Palifka · Orford, US
• Paul A. Hoisington · Hanover, US
• Nathan P. Hine · South Strafford, US
• David Adams-Brady · Meriden, US
• Melvin L. Biggs · Hartford, US
• Steven H. Barss · Wilmot Flat, US
• Diane Mackay · Fairlee, US
• Bruce A. Paulson · Newport, US

Key dates

• Filing date: Nov 20, 2001
• Grant date: Sep 17, 2002
• Expiry date: Nov 20, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01K15/025
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In the embodiments of the simplified ink jet head described in the specification, a carbon body is formed with ink passages, such as internal passages extending through a carbon plate, pressure chambers on one side of a carbon plate, flowthrough passages on the other side of the same plate and ink supply passages, and a piezoelectric plate is affixed to the pressure chamber side of the carbon plate by a thin layer of epoxy adhesive. In one alternative embodiment, an ink jet head assembly contains two separate carbon pressure chamber plates, a carbon manifold plate and a carbon collar to retain the carbon plates in an assembly.