Apparatus for detecting the presence or absence of overlap at ta

Details Apparatus for detecting the presence or absence of overlap at ta Apparatus for detecting the presence or absence of overlap at ta

1988-06-27

1990-01-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250570, 356430, G01N 904

Patent

active

048975400

ABSTRACT:
A joint inspection apparatus comprises a light irradiating device for irradiating light to a tape joint at which two tape edge portions are joined together, and a light receiving device for receiving the light irradiated by the light irradiating device to the tape joint and passing through the tape joint or reflected by the tape joint. A judgment device is provided for judging the presence or absence of an overlap of the two tape edge portions one upon the other at the tape joint on the basis of information on the optical amount of the light received by the light receiving device in the vicinity of the tape joint.

REFERENCES:
patent: 3856414 (1974-12-01), Menary
patent: 4237378 (1980-12-01), Jones
patent: 4286149 (1981-08-01), Ben-Nathan et al.
patent: 4525630 (1985-06-01), Chapman
patent: 4611907 (1986-09-01), Inatsuki

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