Measuring table for densitometric analysis of printed sheets

Details Measuring table for densitometric analysis of printed sheets Measuring table for densitometric analysis of printed sheets

1983-05-20

1986-02-04

Kittle, John E.

Optics: measuring and testing

Sample, specimen, or standard holder or support

356425, 356443, 356444, G01N 2100, G01N 2102, G01N 2122

Patent

active

045681856

ABSTRACT:
A measuring table for facilitating the accurate densitometric measurement of a measuring field strip on a paper sheet is disclosed. The table carries a removable hold-down plate that is positioned between side stop rails and a registering rail. The hold-down plate is held in place on the table by cooperating electromagnets and ferromagnetic metal disks and holds a sheet of paper in place between the plate and the table's surface. The hold-down plate also includes a measuring slot so that a densitometer positioned on the upper surface of the plate is afforded optical access to the measuring field strip imprinted on the paper sheet.

REFERENCES:
patent: 2406716 (1946-08-01), Sweet
patent: 2956473 (1960-10-01), Hunter
patent: 3518013 (1966-09-01), Sanford et al.
Sweet et al., "Automatic Recording and Analyzing Densitometer _for Reflection and Transmission Densities".
Photographic Science and Exp., vol. 3, No. 3, May-Jun. 1959.

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