High quality fluid ejection device

US6799822B2 · kind B2 · utility

Assignee

• HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

• Todd A. Cleland · Corvallis, US
• Robert C. Maze · Corvallis, US
• Michael D. Miller · Shedd, US
• Rama Prasad · Albany, US
• Robert N. K. Browning · Corvallis, US
• Dale R. Oughton · Albany, US
• Joseph M. Torgerson · Philomath, US
• Kenneth D. Saul · Philomath, US
• Michael Hager · Corvallis, US
• Douglas M. Collins · Corvallis, US
• Leslie A. Field · Portola Valley, US
• Storrs T. Hoen · Brisbane, US
• Phillip W. Barth · Portola Valley, US

Key dates

• Filing date: Oct 7, 2002
• Grant date: Oct 5, 2004
• Expiry date: Oct 7, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2002/14475
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A fluid ejection device includes a substrate, drop generators formed on the substrate at a high density, primitive select lines, and a ground line. The drop generators are arranged in primitives of drop generators. Each drop generator includes a heater resistor having a high resistance. Each primitive select line is separately electrically coupled to a corresponding one of the primitives and is configured to connect to a power source. The ground line is electrically coupled to all of the primitives.