Optics: measuring and testing – Refraction testing
Reexamination Certificate
2007-05-22
2007-05-22
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
Refraction testing
Reexamination Certificate
active
10896462
ABSTRACT:
The present invention relates to ink output in ink jet printing systems. A refractometer is used to control the concentration of inks used in continuous ink jet printers. A concentration detector measures the total amount of light reflected from a surface. Changes in the ink cause a definite change in sensor output. As the refractive index is changed, shifting the critical angle for internal reflection, more or less light is reflected to the sensor. The index of refraction can be determined from the sensor once corrections are made to account for temperature dependencies of the sensor and light source and baseline measurement of reflected light amplitude. These dependencies are carried out in the refractometer.
REFERENCES:
patent: 3669545 (1972-06-01), Gilby
patent: 4382656 (1983-05-01), Gilby
patent: 4730882 (1988-03-01), Messerschmidt
patent: 5035504 (1991-07-01), Milosevic et al.
patent: 5170056 (1992-12-01), Berard et al.
patent: 5373366 (1994-12-01), Bowers
patent: 5452083 (1995-09-01), Wilks, Jr.
patent: 5694210 (1997-12-01), Newell et al.
patent: 5835231 (1998-11-01), Pipino
patent: 6067151 (2000-05-01), Salo
patent: 6124937 (2000-09-01), Mittenzwey et al.
patent: 6141100 (2000-10-01), Burka et al.
patent: 6480282 (2002-11-01), Chinowsky et al.
patent: 6504651 (2003-01-01), Takatori
patent: 7064816 (2006-06-01), Langenbacher et al.
patent: 2002/0149775 (2002-10-01), Mori et al.
patent: 2005/0007596 (2005-01-01), Wilks, Jr. et al.
patent: 0 671 622 (2000-07-01), None
patent: 0671622 (2000-12-01), None
patent: 88/01376 (1988-02-01), None
patent: 93/09421 (1993-05-01), None
Refractive Index Sensor with a Guided-Mode Resonant Grating Filter, p. 219—Optical Engineerng for Sensing and Nanotechnology (ICOSN 2001), Koichi Iwata, Editor, Proceedings of SPIE vol. 4416 (2001), pp. 219-222.
New Technique for Determining the Optical Constants of Liquids, by C. Dale Keefe and Jason K. Pearson, Society for Applied Spectroscopy, vol. 56, No. 7, 2002-09728.
Absorption Measurement using a Leaky Waveguide Mode, Optical Reiew vol. 4, No. 3 (1997) 354-357.
An Optical Fibre Refractometer for Liquids using Two Measurement Channels to Reject Optical Attenuation, J. Phys. E: Sci. Instrum. 21 (1988) (64-67).
Absorption Sensor Based on Total Internal Reflection Diffraction Grating, Institute of Physics Publishing, J. Opt. A: Pure Appl. Opt. 4 (2002) 382-386.
Design of a Proe for Sensing the Complex Index of Refraction of Liquids, Section 8: Industrial Applications of Sensors pp. 263-268 (Sep. 2001).
Optical Refractometer for Complex Refractive Index Measurement in UV-NIR Range, SPIE vol. 3730, pp. 118-121 (2003).
Internal Reflection Spectroscopy by N. J. Harrick, New York, Interscience Publishers [1967].
DeVivo Daniel J.
McCann James D.
Trapp Jeffrey S.
Eastman Kodak Company
Geisel Kara
The Buskop Law Group, P.C.
Toatley , Jr. Gregory J.
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