Invention Grant
US09346261B1 Negative air duct sump for ink removal 有权
用于油墨去除的负气管槽

Negative air duct sump for ink removal
Abstract:
A gas flow duct for use in redirecting drops of liquid ejected from a printhead in a continuous inkjet printer, including a sump, a first duct portion upstream of the sump, and a second duct portion downstream of the sump. The first duct portion rises from an entrance to an apex and then turns downward and exits into the sump, and the second duct portion rises from the sump toward an exit port. A cross-sectional area of the first duct portion is adapted to produce a gas flow velocity sufficient to transport entrained liquid through the first duct portion past the apex and into the sump. A cross-sectional area of the second duct portion is larger than the cross-sectional area of the first duct portion and is adapted to produce a gas flow velocity insufficient to transport entrained liquid through the second duct portion.
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