Film cassette with built-in support for optical sensor to read f

Details Film cassette with built-in support for optical sensor to read f Film cassette with built-in support for optical sensor to read f

1990-08-02

1991-06-18

Gellner, Michael L.

354275, G03B 700

Patent

active

050252747

ABSTRACT:
A film cassette comprises a lighttight cassette shell, and film information indicia consisting essentially of a series of optically readable photoreflective and non-reflective bits. According to the invention, sensor positioning means is fixed to the shell for supporting a photoreflective type optoelectronic sensor a suitable distance from the optically readable bits to establish a substantially optimal angle of reflection for the optoelectronic sensor to read the film information indicia.

REFERENCES:
patent: 3402650 (1968-09-01), Hoadley
patent: 3492927 (1970-02-01), Thiele et al.
patent: 4443077 (1984-04-01), Tanikawa
patent: 4693574 (1987-09-01), Ohnuki et al.
patent: 4783671 (1988-11-01), Haraguchi
patent: 4855769 (1989-08-01), Slavitter
patent: 4933780 (1990-06-01), Wash et al.
patent: 4947196 (1990-08-01), Wash et al.
patent: 4965600 (1990-10-01), Smart et al.

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