Film conveying apparatus

Details Film conveying apparatus Film conveying apparatus

1990-04-18

1991-02-26

Gellner, Michael L.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

226 44, 242183, G01D 1514, B41J 247

Patent

active

049965417

ABSTRACT:
A film conveying apparatus includes a portion for feeding a film, a portion for drawing the film and a slack detecting apparatus for detecting slack of the film therebetween. The slack detecting apparatus includes a light emitting portion and the light receiving portion, and when the light from the light emitting portion to the light receiving portion is intercepted by the film, it is determined that the film has slack. When the slack of the film is detected by the slack detecting apparatus, emission of light from the light emitting portion is stopped for a prescribed time period.

REFERENCES:
patent: 4229083 (1980-10-01), Wray
patent: 4814793 (1989-03-01), Hamada et al.
patent: 4958169 (1990-09-01), Hamada et al.

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