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. 12, 2021
Filed:
Oct. 06, 2015
Xerox Corporation, Norwalk, CT (US);
Jeffrey J. Folkins, Rochester, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
A method of calibrating ejectors in an ejector head in a three-dimensional object printer normalizes the masses of the drops ejected by the ejectors. The method operates the plurality of ejectors to eject drops of material to form a plurality of pixels corresponding to a test pattern on the surface. Each ejector in the plurality of ejectors is operated to form a group of adjacent pixels in the test pattern. Each group of adjacent pixels is at least n pixels wide in a cross-process direction for the printer. The method operates a sensor to measure heights of pixels for each group of adjacent pixels in the test pattern. The method adjusts an operation of the plurality of ejectors to normalize heights of layers of material formed by the plurality of ejectors based on the measured heights for the groups of adjacent pixels.