Patent
1995-06-07
1996-07-23
Adams, Russell E.
3541731, 354207, 354275, G03B 118, G03B 1726, G03B 1902
Patent
active
055394841
ABSTRACT:
A camera of this invention can load a film cartridge, and has a spool around which a film is wound, a case for rotatably storing the spool, and an indicator for discriminatively indicating a use state of a film according to a rotational angular position of the spool. The camera has a spool drive, which can be engaged with the spool of the loaded cartridge at a predetermined rotational angular position, and can rotate the spool upon engagement, a first drive control for controlling the spool drive so as to rotate the spool to an angular position where the indicator indicates a used state of the film after the film is rewound, and an unloading detector for detecting an unloading operation of the film cartridge from the camera. The camera also has a second drive control for controlling the spool drive to assume an angular position where the spool drive can be engaged with the spool of the film cartridge on which a film unused state is indicated after the unloading operation of the film cartridge is detected.
REFERENCES:
patent: 4832275 (1989-05-01), Robertson
patent: 4994828 (1991-02-01), Smart
patent: 4994833 (1991-02-01), Cocca
patent: 5032854 (1991-07-01), Smart et al.
patent: 5138350 (1992-08-01), Cocca
patent: 5159365 (1992-10-01), Takahashi et al.
Adams Russell E.
Han J. K.
Nikon Corporation
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