Tape surface discriminating system

Details Tape surface discriminating system Tape surface discriminating system

1981-12-16

1984-08-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250560, 242 57, 360 746, G01B 1104

Patent

active

044672152

ABSTRACT:
A system for discriminating between the front and back surfaces of a tape over the entire length thereof, which comprises a device for discriminating the tape surfaces at least at one end of the tape, and a device for detecting any twisted section at an intermediate point of the moving tape on the basis of a change in the projected area of the tape in the tape width direction.

REFERENCES:
patent: 2474906 (1949-07-01), Meloon
patent: 3746451 (1973-07-01), Croissant et al.

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