Sheet film holder

Details Sheet film holder Sheet film holder

1987-03-09

1989-05-23

Mathews, A. A.

354285, G03B 1724, G03B 1726

Patent

active

048334936

ABSTRACT:
A sheet film holder with means to expose a portion of the unused film edge to a logo, copyright notice or other desired media. The top and bottom rear portions of a dual sheet holder are hingedly connected to the rear wall. The central portion of the bottom arm and the connecting member of the side channel are made of light conducting material. An opaque acetate with clear media is secured to the bottom side of the material portion of the arm.
When film is in the frame and a slide is secured in position within the rear channel, the film remains unexposed, except for the light which is conducted via the material, through the clear portion of the acetate and to the film edge. This desired media will appear on the film when it is developed.

REFERENCES:
patent: 1323364 (1919-12-01), Hood
patent: 1330235 (1920-02-01), Boxell
patent: 1376032 (1921-04-01), Ozols
patent: 2188843 (1940-01-01), Pappajion
patent: 2315987 (1943-04-01), Smith
patent: 2377226 (1945-05-01), Greer
patent: 3631243 (1971-12-01), Byler
patent: 3916423 (1975-10-01), Ueda et al.
patent: 4268144 (1981-05-01), Wheeler
patent: 4634249 (1987-01-01), Tomidokoro

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