1981-11-20
1984-07-17
Perkey, William B.
354214, 354217, 354268, G03B 118, G03B 166, G03B 1736
Patent
active
044602561
ABSTRACT:
A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a reversibly rotatable motor the drivement and rotational direction of which are automatically controlled depending upon various conditions of the camera to implement required advancement of the film.
REFERENCES:
patent: 3135182 (1964-06-01), Hintle et al.
patent: 3917395 (1975-11-01), Ogawa
patent: 3981022 (1976-09-01), Iwashita et al.
patent: 4003063 (1977-01-01), Takahashi et al.
patent: 4251148 (1981-02-01), Stemme et al.
patent: 4272168 (1981-06-01), Maitani et al.
patent: 4310233 (1982-01-01), Okuyama et al.
Araki Kunihiko
Fukushima Yoshio
Horigome Hirofumi
Iguchi Susumu
Nishi Koichi
Perkey William B.
Ricoh & Company, Ltd.
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