Optics: measuring and testing – By configuration comparison – With photosensitive film or plate
Patent
1978-11-16
1980-06-10
Corbin, John K.
Optics: measuring and testing
By configuration comparison
With photosensitive film or plate
356435, G01B 1106, G01N 2122
Patent
active
042070031
ABSTRACT:
A device for detecting changes in ink film thickness on the inking rollers of a printing press which includes a transfer wheel rotatable mounted in nipping contact with one of the inking rollers. A rotatable gauge wheel having a slinger ring assembled intermediate its ends and about its periphery defines a measuring surface on one side of the ring for receiving a film of ink from the transfer wheel and the other side defines a reference surface maintained clear of ink by the ring. Individual photo-electric sensing members are tangentially associated with the peripheral surface of both the measuring and reference surfaces and by means of a cooperating circuit including a comparetor a signal change is given when a difference in ratio occurs between pre-selected signals from these surfaces.
REFERENCES:
patent: 1848874 (1932-03-01), Fitzgerald
patent: 2232622 (1941-02-01), Moses et al.
patent: 3330961 (1967-07-01), Juengst et al.
patent: 3684889 (1972-08-01), Priessnetz et al.
patent: 3707123 (1972-12-01), Heasman et al.
patent: 3756725 (1973-09-01), Manring
patent: 3970393 (1976-07-01), Krygeris et al.
Corbin John K.
Punter William H.
Rockwell International Corporation
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