Patent · US Active

Droplet generator

US8919938B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

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

Inventors

Garrett E. Clark · Corvallis, US
Angela Bakkom · Corvallis, US

Key dates

Filing date	Dec 20, 2007
Grant date	Dec 30, 2014
Priority date	—
Expiry date	Nov 6, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2202/07
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A droplet generator (100, 600, 700) having a bubble purging fluidic architecture comprises a firing chamber (110, 610, 710); an inlet (155, 655) fluidically connecting the firing chamber (110, 610, 710) to a fluid reservoir (140, 640, 740); and an outlet (120, 400, 620, 720) configured to pass fluid droplets being ejected from the firing chamber (110, 610, 710). The geometry of the outlet (120, 400, 620, 720) and the geometry of the inlet (155, 655) are configured such that the outlet (120, 400, 620, 720) geometry has a substantially lower barrier to expansion or motion of a bubble (300, 310, 410) than the inlet (155, 655) geometry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.