Joint inspection apparatus for determining the size of a gap

Details Joint inspection apparatus for determining the size of a gap Joint inspection apparatus for determining the size of a gap

1988-07-18

1989-09-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250570, G01N 904

Patent

active

048641227

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 size of a gap between the two tape edge portions 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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