On-the-paper-machine optical property control system and method

Details On-the-paper-machine optical property control system and method On-the-paper-machine optical property control system and method

D - Textiles, Paper

21

F

341/35, 73/58

D21F 7/00 (2006.01)

Patent

CA 1082945

ABSTRACT OF THE DISCLOSURE In an illustrated embodiment, brightness, color opacity and fluorescent contribution to brightness are measured by an on-line sensing head providing for simultaneous measurement of transmitted and reflected light. By measuring two independent optical parameters, paper optical properties of a partially translucent web are accurately characterized subatantially independently of paper grade and weight. The instrument is designed so as to be capable of transverse scanning of a moving paper web on the paper machine, and so as to monitor desired paper optical characteristics with suficient accuracy to enable on line control of the optical characteristics of the paper being manufactured.

310963

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