Ink jet print head with flow control manifold shape

US6231168A · kind A · utility

Assignee

• Hewlett-Packard Company, L.P. · US

Inventors

• Robert C. Maze · Corvallis, US
• Douglas M. Collins · Corvallis, US
• Todd A. Cleland · Corvallis, US
• Leslie A. Field · Portola Valley, US
• Storrs T. Hoen · Brisbane, US
• Phillip W. Barth · Portola Valley, US

Key dates

• Filing date: Apr 30, 1999
• Grant date: May 15, 2001
• Expiry date: Apr 30, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49401
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An ink jet print head with a substrate defining an ink aperture. A number of ink energizing elements are located on the major surface of the substrate. A barrier layer is connected to the upper surface, and peripherally encloses an ink manifold. The barrier encompasses the ink aperture. An orifice plate is connected to the barrier layer, spaced apart from the substrate's major surface, enclosing the ink manifold. The plate defines a number of orifices, each associated with a respective ink energizing element. The ink manifold is an elongated chamber having opposed ends defined by end wall portions of the barrier layer. The barrier end wall portions each have an intermediate end wall portion protruding into the manifold.