Measuring and testing – Coating material: ink adhesive and/or plastic
Patent
1983-11-02
1985-09-17
Frankfort, Charles
Measuring and testing
Coating material: ink adhesive and/or plastic
73159, G01B 2130
Patent
active
045412731
ABSTRACT:
A method and apparatus for analyzing the structural formation and surface properties of fibrous sheet materials, particularly printing papers, are described. The method requires advancing a marker over a substantial area of the sheet to be tested. The marker is urged into contact with the sheet so that it exerts a pressure on it, typically of printing process magnitudes. The marker is any material which produces an image the intensity of which is proportional to the pressure exerted upon it by the test sheet. A preferred marker is graphite. The image produced is equivalent to those produced by Beta ray formation analyzers and may be evaluated by a missing dot technique commonly employed in rotogravure print quality evaluations.
REFERENCES:
patent: 257761 (1882-05-01), Ridgeway
patent: 2035220 (1936-03-01), Bramberry
patent: 2353852 (1944-07-01), Rowland et al.
patent: 3412605 (1968-11-01), Oehme et al.
patent: 3585854 (1971-06-01), Hanson
patent: 4068385 (1978-01-01), Mitzel
J. Marton, GRI Report No., M-102 (1978), p. 327.
O. Kalimes, M/k Systems, Inc., "New Approach to Measuring Formation-A Matter of Uniformity", Paper Trade Journal/Oct. 25, 1971, pp. 46-50.
Frankfort Charles
Weyerhaeuser Company
Will Thomas B.
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