Film feeding device

Details Film feeding device Film feeding device

1981-12-02

1984-03-06

Adams, Russell E.

35412311, 354212, 354217, G03B 700

Patent

active

044350562

ABSTRACT:
When a camera is loaded with a film cassette, information corresponding to the diameter of a film wind shaft with film wound thereon is detected by a film cassette type switch. An address of a ROM is designated by the shaft diameter information, and shaft rotation angle information corresponding to the designated address is read out from the ROM. The film wind shaft is rotated through an angle corresponding to the rotation angle information by the driving force of a pulse motor. When a fixed length of a film is wound on the film wind shaft, the shaft diameter information is updated, a new piece of rotation angle information is read out from the ROM in accordance with the updated shaft diameter information, and the film wind shaft is rotated to be wound with the constant length of the film in accordance with the updated rotation angle information.

REFERENCES:
patent: 3605598 (1971-09-01), Zimmet
patent: 4220405 (1980-09-01), Stemme et al.
patent: 4240734 (1980-12-01), Nomura et al.
patent: 4367026 (1983-01-01), Terada et al.
patent: 4384777 (1983-05-01), Maida

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