Motorized film loading method

Details Motorized film loading method Motorized film loading method

1996-11-26

1998-05-19

Metjahic, Safet

Photography

With film drive

396397, 396538, G03B 118

Patent

active

057549036

ABSTRACT:
A film loading method for a camera comprising the steps of opening a door to uncover a chamber for a film cartridge, inserting a film leader which protrudes from the film cartridge through a film ingress slot in the chamber and into engagement with a film advance sprocket in a film threading path, and rotating the film advance sprocket in engagement with the film leader to advance the engaged leader along the film threading path, is characterized in that the film leader is inserted manually through the film ingress slot into engagement with the film advance sprocket before the film cartridge is received completely in the cartridge receiving chamber or before the door is closed. This allows one to pull the film leader out of engagement with the film advance sprocket from the film ingress slot to abort the film loading operation.

REFERENCES:
patent: 3463071 (1969-08-01), Winkler et al.
patent: 4397535 (1983-08-01), Harvey
patent: 4474443 (1984-10-01), Komatsuzaki et al.
patent: 5220371 (1993-06-01), Tanii et al.
patent: 5255034 (1993-10-01), Shimada et al.
patent: 5412446 (1995-05-01), Rydelek
patent: 5456419 (1995-10-01), Ezawa
patent: 5630189 (1997-05-01), Siekierski et al.

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