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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


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Requested Product

Title: Method and System for Measuring Optical Properties of Scattering and Absorbing Materials

Source: U.S. Patent 7,495,221 B2. Feb 24, 2009. 9 p. Int. Classif. G01N 21/17.

Author(s)Vahey, David W.; Zhu, JunYong ; Houtman, Carl J.

Publication Year: 2014  View Document »

Category: Patents

Abstract: 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.

Keywords: optical; scattering; absorbing; effective residual ink concentration (ERIC); reflect; transmit; radiation; recycled paper; ink concentration; paper; opacity; ink removal

Date posted: 09/29/2014
RITS Product ID: 69902
Current FPL Scientists associated with this product (listed alphabetically)
Houtman, Carl J.
Chemical Engineer
Zhu, JunYong
Research General Engineer

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