Envelope flap profiling apparatus

Details Envelope flap profiling apparatus Envelope flap profiling apparatus

1988-12-28

1990-05-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356376, G01N 2186

Patent

active

049241060

ABSTRACT:
Apparatus and method for mapping the profile of an envelope flap using an array of sensors of the optical reflective type in which certain optical emitters and certain optical detectors are activated in a sequence to accurately detect and record multiple edge points on a moving flap.

REFERENCES:
patent: 4389971 (1983-06-01), Schmidt
patent: 4419384 (1983-12-01), Kane et al.
patent: 4428794 (1984-01-01), Hayskar et al.
patent: 4491490 (1985-01-01), Ehret et al.
patent: 4691912 (1987-09-01), Gillmann
patent: 4694153 (1987-09-01), Bejczy
patent: 4711579 (1987-12-01), Wilkinson

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