Apparatus for the detection of optical marks on a film support m

Details Apparatus for the detection of optical marks on a film support m Apparatus for the detection of optical marks on a film support m

1985-07-01

1987-09-01

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

353 26A, G06K 714

Patent

active

046911120

ABSTRACT:
An apparatus for detecting optical marks on a film support moved relative to the apparatus includes a light source and light detector for detecting optical marks on the film support, the light detector having at least one photoresponsive sensor arranged in fixed manner over the film track, the sensor having a number of photoresponsive elements arranged at right angles with respect to the direction of motion of the film track and which, without intermediate optics, are in the immediate vicinity of the film support. Part of the photoresponsive elements can be used for scanning the image marks or blips and another part for scanning the document parts or other black/white values in the document area of the film.

REFERENCES:
patent: 3778630 (1973-12-01), White et al.
patent: 3885866 (1975-05-01), Stearns
patent: 3941981 (1976-03-01), Abe et al.
patent: 3999846 (1976-12-01), Sone et al.
patent: 4207473 (1980-06-01), Nakatani et al.
patent: 4219737 (1980-08-01), Gagnon et al.
patent: 4457008 (1984-06-01), Nakatani et al.

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