Imaging apparatus and method of fiber analysis

Details Imaging apparatus and method of fiber analysis Imaging apparatus and method of fiber analysis

1992-09-30

1994-05-10

Evans, F. L.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356238, 356246, 348142, G01B 1104

Patent

active

053112903

ABSTRACT:
A method and apparatus for positioning, aligning and orienting fibers in flowing fluids, to permit fibers such as wood pulp fibers to be accurately imaged and rapidly measured with little operator involvement, utilizing a plugging resistant and fouling resistant sheath flow cell, is described. An embodiment is disclosed which simultaneously determines the distributions of shape (curl) and length of samples of wood pulp fibers. Fibers are transported in a dilute water suspension through a sheath flow cell that orients fibers normal to an imaging system that includes a two-dimensional CCD video camera. Images of fibers are analyzed rapidly by a processor, which calculates the shape and length of individual fibers. The data are displayed on a cathode ray tube screen while a pulp sample is being analyzed, and are stored in processor memory for further analysis.

REFERENCES:
patent: 3816001 (1974-06-01), Duncan et al.
patent: 4266874 (1981-05-01), Janin et al.
patent: 4352558 (1982-10-01), Eisert
patent: 4460921 (1984-07-01), Henry et al.
patent: 4737648 (1988-04-01), Smith et al.
patent: 4792233 (1988-12-01), Irvine
patent: 4887155 (1989-12-01), Massen
patent: 4926350 (1990-05-01), Bechtel et al.
patent: 4963035 (1990-10-01), McCarthy et al.
patent: 4983038 (1991-01-01), Ohki et al.
A Simple Rapid Method for Determining Fiber Dimensions Abbot, Jaycox & Ault, The Proctor and Gamble Company pp. 119 to 132, 1979.
High Resolution DNA Content Measurements of Mammalian Sperm--Authors: Pinkel et al pp. 1-9 Cytometry vol. 3, No. 1, 1982.
Application of Image Analysis of Pulp Fibre Characterisation Authors: Jord & Page--Pulp and Paper Institute of Canada pp. 745-765, Transactions of Symposium 1981 Published 1983 by Mech. Eng. Publications Ltd.
Flow Cytometry-Author: Steinkamp pp. 1375-1400 Rev. Sci. Instrum. 55(9) Sep. 1984.
Curl, Crimps, Kinks & Microcompressions in Pulp Fibres Authors: Page, Seth, Jordan & Barbe-Pulp & Paper Research Institute of Canada pp. 183-227 Transactions of Symposium Sep. 1985 Published: Mech. Eng. Publications Ltd.
Curvature Kink and Curl Authors: Jordan & Nguyen pp. 313-318 Paperi JA PUU-Papper Och Tra Apr. 1986.
Fiber-Optic Flocculation Sensor for On-Line Control . . . Authors: Eisenlauser, Horn, Linhart & Hemel--BASF pp. 132-138 Nordic Pulp and Paper Research Journal Apr. 1987.
Continuous On-Line Measurement of Dirt and Shives Author: Predmore, Phoenix Tech. Inc. pp. 237-247 Tappi Proceeding 1989 Pulping Conference.
Fibre Deformation and Its Implictations in Pulp Characterization Authors: Mohlin & Alfredsson pp. 172-179 Nordic Pulp & Paper Research Journal No. 4/1990.
Curvature Measurement in a Network of Crossing . . . Authors: Nguyen & Jordan pp. 375 to 381-1991 International Paper Physics Conference Tappi Press 1991.

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