Hewlett-packard Company

Eldukar V Bhaskar

Winthrop D Childers

Paul H McClelland

Kenneth E Trueba

Brian J Keefe

Steven Warren Steinfield

Charles E Moore

Ulrich E Hess

Larry S Metz

James R Hulings

Duane A Fasen

Jerome E Beckmann

John H Stanback

This invention provides an apparatus and method of fabrication thereof for an inkjet printhead with an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member containing an array of orifices. The substrate contains two linear arrays of heater elements, and each orifice in the nozzle member is associated with a vaporization chamber and heater element. The ink channels in the barrier layer have ink entrances generally running along two opposite edges of the substrate so that ink flowing around the edges of the substrate gain access to the ink channels and to the vaporization chambers. The apparatus is fabricated without using ion implant technology.

Edge feed ink delivery thermal inkjet printhead structure and method of

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Corvallis, OR, United States of America

Eldukar V Bhaskar