X-ray coating weight controller and sensor

Details X-ray coating weight controller and sensor X-ray coating weight controller and sensor

1989-04-20

1991-05-07

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 54, 378 55, G01N 23083

Patent

active

050142887

ABSTRACT:
An x-ray sensor for determining the amount and composition of a multi-component material is disclosed. The sensor is particularly useful for determining the amount and chemical composition of a coating spread on a continuously moving paper sheet or filler material mixed into such a sheet.

REFERENCES:
patent: Re30884 (1982-03-01), Buchnen
patent: 3435220 (1969-03-01), Hanken
patent: 3452193 (1969-06-01), Petersen
patent: 3904876 (1975-09-01), Arendt
patent: 3974386 (1976-08-01), Mistretta et al.
patent: 4090074 (1978-05-01), Watt et al.
patent: 4668867 (1987-05-01), Lingenfelter
patent: 4815116 (1989-03-01), Cho
patent: 4845730 (1989-07-01), Mercer
"Composition Compensated Paper Ash Gauge", O. L. Utt and B. Y. Cho, Industry Oriented Conference and Exhibit, 1975.
"A New TiO.sub.2 Compensated X-ray Ash Sensor for Paper", B. Y. Cho and O. L. Utt, 1975.
Co-pending U.S. application Ser. No. 07/310,037 for System and Process for Determining the Basis Weight of a Low Atomic Number Material in a Mixture with a Higher Atomic Number Material.
Co-pending U.S. patent application Ser. No. 07/274,645 for System and Process for Measuring Ash in Paper.

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