Camera winding-up apparatus
AssigneeNikon Corporation
InventorAkira Ezawa
Life of this patent
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Abstract
A camera film wind-up apparatus for winding up a film wound around a cartridge spool, the film being housed in a cartridge having the cartridge spool, comprises a first driving apparatus for rotatably driving the cartridge spool, a wind-up spool around which a film extended from the cartridge is wound, a second driving apparatus for rotatably driving the wind-up spool, and a control apparatus. The control apparatus controls the first driving apparatus so as to control the amount of rotation of the cartridge spool on the basis of the amount of the rotation of the wind-up spool during the winding-up of the film, thereby preventing the film from being tightly wound around the cartridge spool.
Claims10
A film winding apparatus of a camera for winding a film housed in a cartridge having a cartridge spool, said apparatus having a wind-up spool which winds the film wound around the cartridge spool, comprising:
- first driving means for rotatably driving the cartridge spool in a direction to feed the film from the cartridge;
- second driving means for rotatably driving the wind-up spool in a direction to wind the film fed from the cartridge;
- and
- control means which controls the first driving means so as to rotate the cartridge spool in the direction to feed the film by an amount which compensates for a tendency of the film to tighten around the cartridge spool when the wind-up spool winds the film.
A camera provided with a wind-up spool which winds a film housed in a cartridge having a cartridge spool, comprising:
- a member which is fitted into said cartridge spool when said cartridge is loaded in said camera;
- a first driving part engaged with said member to transfer a rotational force to said member when the film is fed from the cartridge;
- a second driving part engaged with said member to transfer a rotational force to said member when the film fed from the cartridge is wound;
- a third driving part engaged with said wind-up spool to transfer a rotational force to said wind-up spool when said wind-up spool winds the film;
- and
- a control part which causes said first driving part to rotate said member by an amount which compensates for a tendency of the film to tighten around said cartridge spool when said wind-up spool winds the film.
An apparatus provided with a wind-up spool which winds a film housed in a cartridge having a cartridge spool, comprising:
- a member which is fitted into said cartridge spool when said cartridge is loaded in said apparatus;
- a first driving part engaged with said member to transfer a rotational force to said member when the film is fed from the cartridge;
- a second driving part engaged with said member to transfer a rotational force to said member when the film fed from the cartridge is wound;
- a third driving part engaged with said wind-up spool to transfer a rotational force to said wind-up spool when said wind-up spool winds the film;
- and
- a control part which causes said first driving part to rotate said member by an amount which compensates for a tendency of the film to tighten around said cartridge spool when said wind-up spool winds the film.
Dependencies are inferred from the claim text.