Hewlett-packard Development Company, L.p.

Franklin D Derryberry

Paul Mark Haines

Angela White Bakkom

Benjamin H Wood

Anjan Prabhat Pattathil

A fluid ejection and circulation apparatus may include a fluid ejection die, the pressure regulator, a first standpipe, a second standpipe and a crossflow passage. The pressure regulator has a fluid chamber. The first standpipe is between the fluid chamber and the fluid ejection die. The first standpipe has a first port above the fluid ejection die. The second standpipe extends alongside the first standpipe. The second standpipe has a second port above the fluid ejection die. The crossflow passage connects the first standpipe and the second standpipe.

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Corvallis, OR, United States of America

Franklin D Derryberry