Camera
AssigneeCanon Kabushiki Kaisha
InventorAkira Egawa
Life of this patent
Estimating the term…
Abstract
The display of the state of use of film provided on a film cartridge is prevented from becoming a wrong display during the insertion of the film cartridge into a camera or during the removal of the film cartridge from the camera. Rotation restraint releasing means 20 are provided for bearing against rotation restraining means only while a supply spool 2 is engaged by the fork member 13 of the camera, and releasing the rotation restraint of the supply spool by the rotation restraining means, and this rotation restraint is released only in a state in which the supply spool is engaged by the fork member of the camera and the supply spool is not inadvertently rotated.
Claims41
An apparatus usable with a cartridge having a rotor for moving an image recording medium, an index that is rotated integrally with the rotor, and a regulation device that regulates rotation of the index, the apparatus comprising:
- (a) an engagement device engageable with the rotor of a cartridge being used with the apparatus, for rotatably driving the rotor;
- (b) an operation device that is movable and causes the regulation device to inhibit rotation of the index of a cartridge being used with the apparatus in a state where said engagement device is engaged with the rotor of the cartridges, said operation device being operable independent of said engagement device;
- and
- (c) a reading device that reads the index of a cartridge being used with the apparatus in a state where the index is rotated.
An apparatus usable with a cartridge having a rotor for moving an image recording medium, an index that is rotated integrally with the rotor, and a regulation device that regulates rotation of the index, the apparatus comprising:
- an operating device that selectively sets the regulation device of a cartridge being used with the apparatus in one of a state for inhibiting rotation of the index of the cartridge and a state for not inhibiting rotation of the index of the cartridge;
- and
- a control device for electrically controlling said operating device.
An apparatus usable with a cartridge having a rotor for moving an image recording medium, an index that is rotated integrally with the rotor, and a regulation device that regulates rotation of the index, the apparatus comprising:
- an engagement device engageable with the rotor of a cartridge being used with the apparatus, for rotatably driving the rotor;
- an operation device that is movable and causes the regulation device to cease inhibiting rotation of the index of a cartridge being used with the apparatus after the cartridge has been loaded into a cartridge loading chamber, said operation device being operable independent of said engagement device;
- and
- a reading device that reads the index of a cartridge being used with the apparatus, in a state where the index is rotated.
Dependencies are inferred from the claim text.