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:
Mar. 07, 2000
Filed:
Apr. 09, 1998
David C Craig, Rochester, NY (US);
Lam F Wong, Fairport, NY (US);
Justine M Woods, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A printing machine having a moving imaging surface, a projecting system for modulating a beam and projecting an image onto the imaging surface, a developer for application of toner to the image projected onto the imaging surface for transfer of the image to a medium, a method of development control including the steps of; generating a setup calibration tone curve base on a preset representative halftone patches; marking a test pattern in the interdocument zone of the imaging surface, the test pattern comprising a plurality of halftone patches; sensing the test pattern and measuring a relative reflection of each of said plurality of halftone patches in the interdocument zone of the imaging surface; entering said measured values into a matrix and correlating said matrix to a plurality of print quality actuators; generating a representative tone reproduction curve base on the matrix results; producing a feedback signal by comparing the representative tone reproduction curve to said setup calibration tone curve; and adjusting independently each of said print quality actuators to adjust printing machine operation for print quality correction