The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2013
Filed:
Jul. 29, 2009
Alexander Govyadinov, Corvallis, OR (US);
James W. Ring, Blodgett, OR (US);
Alexander Govyadinov, Corvallis, OR (US);
James W. Ring, Blodgett, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
In one embodiment, a drop detector includes a light source for illuminating drops passing through a drop zone and a light detector near the light source for detecting light scattered off the drops back toward the light source. In another embodiment, a drop detector includes a light source operable to emit a beam of light for illuminating drops passing through a drop zone and a light detector positioned near the light source to detect substantially only light scattered off the drops at a scatter angle θ in the range of 177° to 180°, where θ represents a direction of scattered light measured with respect to an axis of the light beam with θ=0° lying along the axis in a direction of travel of the light beam and θ=180° lying along the axis opposite the direction of travel of the light beam.