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:
Aug. 16, 2016
Filed:
Mar. 31, 2014
Xerox Corporation, Norwalk, CT (US);
David S. Derleth, Webster, NY (US);
Frank B. Tamarez Gomez, Webster, NY (US);
Matthew D. Savoy, Webster, NY (US);
Annie Liu, Webster, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
An apparatus detects inoperative inkjets during printing of three-dimensional objects. The apparatus includes an optical sensor with a predetermined focal plane. The optical sensor is moved to a position that enables the sensor to generate image data of material drops ejected by a group of inkjets in a single row of a printhead. These image data are analyzed to detect inoperative inkjets to enable printhead maintenance at appropriate times to maintain the operational status of the inkjets in the printhead. The optical sensor is moved along a length and width of the printhead to enable the sensor to generate image data of all the inkjets that eject material from the printhead.