Method and system for measuring optical properties of scattering and absorbing materials

A system and method for determining a level of effective residual ink concentration (ERIC) in a piece of recycled paper. The piece of paper is illuminated with a beam of radiation and an amount of the beam of radiation reflected and transmitted by the piece of paper is measured. The level of ERIC is...

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Bibliographic Details
Published inUnited States Department of Agriculture patents no. 7
Main Authors Vahey, David W, Zhu, Jun Yong, Houtman, Carl J
Format Publication
LanguageEnglish
Published 2009
Subjects
chemical concentration
chemical residues
effective residual ink concentration
infrared radiation
optical properties
printing inks
recycled paper
recycling
reflectance
USDA
waste paper
United States
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Summary:A system and method for determining a level of effective residual ink concentration (ERIC) in a piece of recycled paper. The piece of paper is illuminated with a beam of radiation and an amount of the beam of radiation reflected and transmitted by the piece of paper is measured. The level of ERIC is determined as a function of the reflected and transmitted radiation.
Bibliography:http://hdl.handle.net/10113/29509