Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2007-05-15
2009-02-24
Hannaher, Constantine (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
07495221
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.
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Vahey et al., “On Measurements of Effective Residual Ink Concentration (ERIC) of Deinked Papers Using Kubelka-Munk Theory.” Progress in Paper Recycling, vol. 16, No. 1 (Nov. 2006) pp. 3-12.
Hebert et al., “Reflectance and transmittance model for recto-verso halftone prints.” J. Opt. Soc. Am. A, vol. 23, No. 10 (Oct. 2006) pp. 2415-2432.
Houtman Carl J.
Vahey David W.
Zhu Jun Yong
Fado John D.
Hannaher Constantine
Shaw Lesley D.
Stockhausen Janet I.
The United States of America as Represented by the Secretary of
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