Optical cigarette end inspection method and device

Details Optical cigarette end inspection method and device Optical cigarette end inspection method and device

1975-03-18

1976-09-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2091117R, 250227, G01D 2104

Patent

active

039805670

ABSTRACT:
A method and apparatus for inspecting the ends of cigarettes by use of a spaced pair of optical fiber probes illuminating the ends of a cigarette and receiving light therefrom, and electronic circuit means converting the reflected light into representative signals which when processed and compared to a threshold signal provides a reject signal when at least one end of a cigarette is unacceptable.

REFERENCES:
patent: 3334240 (1967-08-01), Black
patent: 3557374 (1971-01-01), Schmermund
patent: 3557375 (1971-01-01), Schmermund
patent: 3709612 (1973-01-01), Clemens
patent: 3729636 (1973-04-01), Merker
patent: 3812349 (1974-05-01), Gugliotta et al.
patent: 3818223 (1974-06-01), Gibson et al.

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