Recirculation bypass

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12023937
APP PUB NO 20230103786A1
SERIAL NO

17798902

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Importance

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Abstract

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A fluid ejection die may include a fluid actuator, a substrate supporting the fluid actuator, a chamber layer supported by the substrate and a bypass passage in the substrate. The substrate may include a closed inlet channel having an inlet opening for connection to an outlet of a fluid source and an outlet channel having an outlet opening of a first size for connection to an inlet of the fluid source. The chamber layer includes a recirculation passage to supply fluid for ejection by the fluid actuator through an ejection orifice and to circulate fluid across the fluid actuator from the closed inlet channel to the outlet channel. The bypass passage is of a second size less than the first size and connects the inlet channel to the inlet of the fluid source while bypassing any fluid actuator provided for ejecting fluid through an ejection orifice.

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Patent Owner(s)

Patent OwnerAddress
HEWLETT-PACKARD DEVELOPMENT COMPANY L P10300 ENERGY DRIVE SPRING TX 77389

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choy, Si-lam J Corvallis, US 22 47
Clark, Garrett E Corvallis, US 52 171
Lum, Jacob M Corvallis, US 1 0
Pollard, Jeffrey R Corvallis, US 28 165
Sells, Jeremy Corvallis, US 25 47
Yamashita, Tsuyoshi Corvallis, US 98 908

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