| 摘要 |
A film cartridge includes supply and take-up chambers, a wall interconnecting the chambers to support film therebetween in a plane, and a gear rotatable about an axis for transporting the film across the film plane from the supply chamber to the take-up chamber. A camera for receiving the cartridge includes a cartridge supporting surface and a drive gear engageable with the gear of a received cartridge to define a pressure angle therebetween. The gear axes define a plane which is offset from a normal to the film plane by an angle equal to the pressure angle of the gears, thereby creating a line of force parallel to the film plane so that any tendency of the cartridge to be unseated from the supporting surface in response to the creation of a force component normal to the film plane is negated.
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