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:
Oct. 13, 1998
Filed:
Nov. 13, 1995
Martin G Lim, Union City, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An acoustic ink printhead includes a substrate having an inlet side, an outlet side, and a plurality of acoustic lenses acoustically coupled to a substrate. Each acoustic lens has an identical focal length for focusing acoustic energy at an associated position adjacent to the substrate. A top plate is attached to the substrate to define a channel that permits ink flow between the inlet side and the outlet side. The top plate has a plurality of variable size openings to permit ejection of acoustically impelled droplets of ink flowing in the channel. Because of the varying size of the openings in the top plate, the ink menisci in the plurality of openings is maintained at a substantially constant distance with respect to the substrate, improving uniformity of droplets ejected.