Pneumatic assembly for a pressure decay tester

US7987699B2 · kind B2 · utility

Assignee

• Silverbrook Research Pty Ltd · AU

Inventors

• Stephen John Sleijpen · Sydney, AU
• Joseph Tharion · Sydney, AU
• Jan Waszczuk · Sydney, AU
• Eric Patrick O'Donnell · Sydney, AU
• William Granger · Sydney, AU
• David Bernardi · Chatswood, AU
• Stephen Richard O'Farrell · Sydney, AU
• Jason Mark Thelander · Chatswood, AU

Key dates

• Filing date: Aug 19, 2008
• Grant date: Aug 2, 2011
• Expiry date: Feb 3, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M3/26
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A pneumatic assembly for a pressure decay tester of printhead integrated circuits includes a pressurized air supply. A pneumatic clamping arrangement is in fluid communication with the pressurized air supply for clamping a carrier for the printhead integrated circuits such that the carrier is in fluid communication with the printhead integrated circuits. A valve arrangement applies a predetermined pressure to the carrier. A sensing arrangement senses a static pressure in the carrier. A control system is in communication with the clamping, valve and sensing arrangements to control operation thereof and to generate a discernible signal representing said static pressure such that a decay in said static pressure can be determined.