Inline calibration of clear ink drop mass

• Main Authors: CHRETIEN MICHELLE N, ODELL PETER GORDON
• Format: Patent
• Language: English
• Published: 13.08.2013
• Subjects: BOOK COVERS; BOOKBINDING; CORRECTION OF TYPOGRAPHICAL ERRORS; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; FILES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; LOOSE LEAVES; MOVABLE-STRIP WRITING OR READING APPARATUS; PERFORMING OPERATIONS; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; PRINTING; SELECTIVE PRINTING MECHANISMS; SPECIAL PRINTED MATTER; STAMPS; TRANSPORTING; TYPEWRITERS

An imaging device includes a plurality of ink jets that eject drops of substantially clear ink onto print media. One of the print media and the substantially clear ink has a fluorescent characteristic and the other of the print media and the substantially clear ink is substantially non-fluorescent. The imaging device includes a fluorescence sensor that illuminates the print media and detects a fluorescence intensity of light received from the print media alone and from the print media and the drops of substantially clear ink ejected onto the media. A controller modifies an operating parameter of the imaging device with reference to ink drop masses identified with reference to the detected fluorescent intensities.