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. 10, 2018
Filed:
Jul. 28, 2014
Hewlett-packard Indigo B.v., Amstelveen, NL;
HP Indigo B.V., Amstelveen, NL;
Abstract
A method and system for performing color print quality monitoring for a color printing process, the method includes determining a calibration distance (ZCAL) between a Spectrophotometer () and an associated calibration patch () that provides a maximum luminescence value (LMAX) detected by the Spectrophotometer. The Spectrophotometer () is calibrated at the calibration distance by taking a color reading. A first color patch distance (Z) between the Spectrophotometer and a color calibration patch () printed on a sheet () is determined from a first maximum color patch luminescence value (L). A first color reading of the color calibration patch is taken and a second color patch distance (Z) between the Spectrophotometer and a different area of the color calibration patch () is determined to provide a second maximum color patch luminescence value (L). A second color reading of the color calibration patch is taken and compared with the first color reading to determine if the printing process needs adjusting.