Photographic film cartridge and camera including such
AssigneeGinfax Development Limited
InventorChing Miao Wilson Wang
Life of this patent
Estimating the term…
Abstract
A combination of a camera body with a lens, shutter and shutter operating control with an attachable, removeable film cartridge having an unexposed film spool region and an exposed film spool region and a bridging portion between those regions. An opening in the cartridge permits light from the lens to pass through the opening to the film at the bridging portion. A door closes the opening of the cartridge and the door is openable with the cartridge installed in or attached to the camera body. Cooperating elements on the camera body and the cartridge open the door or close the door with the door being openable when the cartridge is fully engaged with the camera body. There is a detented connection of the film cartridge in the camera body.
Claims37
In combination, a camera body and a photographic film cartridge detachably attachable to the camera body, the combination comprising:
- the camera body including a light control device for communicating an image to a film in the cartridge in the camera body, and camera operating elements for permitting communication of an image through the light control device to the film;
- the cartridge comprising an unexposed film spool region, a second spool region spaced from the unexposed film spool region and a bridging portion between the unexposed film spool region and the second spool region such that the film can be advanced from the unexposed film spool region past the bridging portion to the second spool region, and when the cartridge is in the camera body, the bridging portion is positioned with respect to the lens in the camera body so that an image can be captured on film then at the bridging portion;
- film operating elements in the camera body and cooperating film operating elements on the cartridge for being operated together for advancing the film in the cartridge from the unexposed film spool region to the second spool region past the bridging portion;
- the bridging portion being so shaped with respect to the cartridge and the camera body as to define a dark room for film passing between the unexposed film spool region and the second spool region;
- a light transmission opening in the cartridge at the bridging portion, the opening being positioned such that when the cartridge is in engagement with the camera body, and with the opening open, film at the bridging portion is presented for exposure by light passing the lens and the opening in the film cartridge;
- a door on the film cartridge, the door is shaped to prevent light from entering through the opening into the darkroom in the cartridge;
- the door being selectively moveable between a closed position where the door blocks the opening in the cartridge and an open position wherein the door has been moved to open the opening in the cartridge and permit exposure of film at the bridging region in the darkroom.
A photographic film cartridge for detachable attachment to a camera body, the film cartridge comprising:
- an unexposed film spool region, a second spool region spaced from the unexposed film spool region and a bridging portion between the unexposed film spool region and the second spool region such that the film can be advanced from the unexposed film spool region past the bridging portion to the second spool region;
- the bridging portion being so shaped with respect to the cartridge and the camera body as to define a dark room for film passing between the unexposed film spool region and the second spool region;
- a light transmission opening in the cartridge at the bridging portion, the opening being positioned such that when the cartridge is in engagement with the camera body, and with the opening open, film at the bridging portion is presented for exposure by light passing the lens and the opening in the film cartridge;
- a door on the film cartridge, the door is shaped to prevent light from entering through the opening into the darkroom in the cartridge;
- the door being selectively moveable between a closed position where the door blocks the opening in the cartridge and an open position wherein the door has been moved to open the opening in the cartridge and permit exposure of film at the bridging region in the darkroom.
A camera body for receiving a photographic film cartridge in a detachable manner, the camera body including:
- a body, a receptacle in the body shaped to the shape of a film cartridge to be disposed in the receptacle;
- a light control device on the camera body for passing light into the camera body receptacle to illuminate an area of the cartridge disposed therein;
- a holding device inside the camera body receptacle facing toward the cartridge and biased into engagement with the cartridge for retaining a cartridge installed in the camera body;
- a release mechanism on the camera body associated with the holding device and operable by a user to release the holding device and thereby to release the cartridge for removal of the cartridge from the camera body.
Dependencies are inferred from the claim text.