Abstract: A red phosphor that has optical characteristics and durability under high-temperature and high-humidity environments, and a method for producing the same. The red phosphor includes a Mn-activated complex fluoride represented by the following general formula (1) and bismuth: A2MF6:Mn4+??(1) wherein A represents at least one alkali metal element selected from the group consisting of lithium, sodium, potassium, rubidium and cesium, and M represents at least one tetravalent element selected from the group consisting of silicon, germanium, tin, titanium, zirconium and hafnium.

Abstract: A case body containing instant photo films includes an exit slot for feeding out one instant photo film after another, and a claw path opening for allowing entry of a claw member ejecting the instant photo films. A pair of thrust preventing flaps is disposed inside the exit slot, for closing the lateral ends of the exit slot to prevent the instant photo film thrusting out. The claw path opening is closed by a light shielding plate and a light shielding skirt, which compose a light shielding member. The light shielding plate is moved to an open position by the claw member in the first advancing operation, and is moved to a full-open position in the second advancing operation.

Abstract: A cartridge is composed of a cartridge body and a shutter. A hologram recording disk is rotatably contained in a disk recess formed in the cartridge body. The shutter comprises upper and lower shutter plates between which the cartridge body is interposed. The shutter opens and closes openings formed in both surfaces of the cartridge body. When the shutter is kept in a closed position where the openings are closed, the edges of the shutter are inserted into slits formed around the opening. Further, a groove is formed at an end portion of the shutter. Into the groove, a ridge formed on the cartridge body is inserted.

Abstract: A cartridge (2) contains a recording disk (4) having photosensitivity. The cartridge comprises a cartridge shell (11), a light shielding plate (12) and a shutter (13). The cartridge shell has an internal opening (18) for exposing a central portion and a recording surface of the recording disk to the outside. The light shielding plate is attached to an outer side of the cartridge shell and has an external opening (14) confronting the internal opening. The shutter is slidably disposed between the cartridge shell and the light shielding plate to open and close the internal opening. A lock mechanism locks the shutter in a closed position. For releasing the lock mechanism, it is necessary to slide a first lock member (63), which is exposed through a cavity (72), in a state that a second lock member (64) projecting into a groove (7) is pushed into the cartridge shell.

Abstract: A cartridge (2) is composed of a lower shell (30), an upper shell (31), a shutter 10 and a lock mechanism (11). A hologram recording disk (4) is rotatably contained in a disk recess (3) of a cartridge body (25) formed by joining the lower shell (30) and the upper shell (31). Inner surfaces of the lower shell (30) and the upper shell (31) are provided with a first concave portion (34), a second concave portion (35), a first convex portion (42) and a second convex portion (43). When the lower shell (30) and the upper shell (31) are joined, the concave portions and the convex portions engage to form a labyrinth-like light-shielding structure. In virtue of this, light and dust are prevented from entering through a gap residing between the lower shell (30) and the upper shell (31).

Abstract: An instant film pack includes a plurality of instant photo films. A case contains the instant photo films being stacked. An exit slot is formed in the case, for exiting the instant photo films to an outside of the case one after another. A claw path opening is formed in the case, for receiving insertion of an advancing claw mechanism for advancing the instant photo films by one photo film to move to the exit slot. A thrust preventing flap is disposed on an inside of the exit slot, for closing the exit slot at the middle, to prevent the instant photo films from coming through the exit slot. Furthermore, a light shielding sheet of aluminum foil closes the claw path opening in a light-tight manner, and is released to open the claw path opening upon advance of the advancing claw mechanism.

Abstract: A cartridge is composed of a cartridge body and a shutter. A hologram recording disk is rotatably contained in a disk recess formed in the cartridge body. The shutter comprises upper and lower shutter plates between which the cartridge body is interposed. The shutter opens and closes openings formed in both surfaces of the cartridge body. When the shutter is kept in a closed position where the openings are closed, the edges of the shutter are inserted into slits formed around the opening. Further, a groove is formed at an end portion of the shutter. Into the groove, a ridge formed on the cartridge body is inserted.

Abstract: A case body containing instant photo films includes an exit slot for feeding out one instant photo film after another, and a claw path opening for allowing entry of a claw member ejecting the instant photo films. A pair of thrust preventing flaps is disposed inside the exit slot, for closing the lateral ends of the exit slot to prevent the instant photo film thrusting out. The claw path opening is closed by a light shielding plate and a light shielding skirt, which compose a light shielding member. The light shielding plate is moved to an open position by the claw member in the first advancing operation, and is moved to a full-open position in the second advancing operation.

Abstract: An instant film pack includes a plurality of instant photo films. A case contains the instant photo films being stacked. An exit slot is formed in the case, for exiting the instant photo films to an outside of the case one after another. A claw path opening is formed in the case, for receiving insertion of an advancing claw mechanism for advancing the instant photo films by one photo film to move to the exit slot. A thrust preventing flap is disposed on an inside of the exit slot, for closing the exit slot at the middle, to prevent the instant photo films from coming through the exit slot. Furthermore, a light shielding sheet of aluminum foil closes the claw path opening in a light-tight manner, and is released to open the claw path opening upon advance of the advancing claw mechanism.

Abstract: The present invention provides an instant photographic film pack that is loaded in an instant camera. The instant photographic film pack can be produced at low cost, has little environmental impact, and has excellent handling characteristics. The instant photographic film pack includes a case body which accommodates therein self-developing type film units, has one side thereof open, and has an exposure opening for providing each one of the self-developing type film units with exposure, an ejection slit for ejecting the self-developing type film units after exposure thereof, and a reference surface serving as a reference for location when loaded into the instant camera; a covering portion covering the open side of the case body; and a light-shielding cover covering the exposure opening. The case body and the covering portion are formed of cardboard and/or a cellulose-resin composite or the like.

Abstract: A cartridge shell includes a film take-up unit for containing a cassette shell with a rotatable spool and a film supply unit for containing a roll of photo filmstrip one end of which is secured to the spool. Inside the film supply unit, light shielding members are provided in order to prevent an unexposed photo film roll from being exposed. Each of the film take-up unit and the film supply unit has a bridge, and the both bridges are movably fitted into each other. When the photo film cartridge is not used, both of the bridges are completely overlapped each other so that the cartridge shell becomes small in size for convenience of portability.

Abstract: The present invention provides an instant photographic film pack that is loaded in an instant camera. The instant photographic film pack can be produced at low cost, has little environmental impact, and has excellent handling characteristics.

Abstract: A cartridge shell includes a film take-up unit for containing a cassette shell with a rotatable spool and a film supply unit for containing a roll of photo filmstrip one end of which is secured to the spool. Inside the film supply unit, light shielding members are provided in order to prevent an unexposed photo film roll from being exposed. Each of the film take-up unit and the film supply unit has a bridge, and the both bridges are movably fitted into each other. When the photo film cartridge is not used, both of the bridges are completely overlapped each other so that the cartridge shell becomes small in size for convenience of portability.

Abstract: A film pack is comprised of a case body and plural film units stacked inside the case body. An exposure opening is formed in the front wall of the film pack, and an ejection slit for advancing the film unit out of the film pack is formed in the upper wall. In the ejection slit, front and rear slit edges are confronted with each other. Engaging ridges are provided on the middle of the front slit edge. When external force is applied to the front wall, the engaging ridges press an engaged portion, which is provided in the middle of the rear slit edge. Then, the engaged portion is depressed and engaged with the engaging ridges. Thereby, it is possible to prevent further deformation of the front wall, which causes rupture of a processing fluid pod in the film unit.

Abstract: A film pack is comprised of a case body and plural film units stacked inside the case body. An exposure opening is formed in the front wall of the film pack, and an ejection slit for advancing the film unit out of the film pack is formed in the upper wall. In the ejection slit, front and rear slit edges are confronted with each other. Engaging ridges are provided on the middle of the front slit edge. When external force is applied to the front wall, the engaging ridges press an engaged portion, which is provided in the middle of the rear slit edge. Then, the engaged portion is depressed and engaged with the engaging ridges. Thereby, it is possible to prevent further deformation of the front wall, which causes rupture of a processing fluid pod in the film unit.

Abstract: An instant photo film pack includes a pack case for containing a stack of ten self-processing photo film units. An outlet slit is formed in the pack case, for exiting an exposed one of the photo film units therethrough. A light-shielding flap has a substantially quadrilateral shape, for closing the outlet slit in a light-tight manner. The light-shielding flap has first, second and third predetermined adhering regions, at least which are coated with adhesive agent and attached to the pack case. The light-shielding flap has first and second longer side lines and first and second shorter side lines. The first adhering region has a linear shape and extends along the first longer side line. The second and third adhering regions have a dot shape, and are disposed respectively at the first and second shorter side lines. The outlet slit is disposed between the second and third adhering regions.

Abstract: An instant photo film pack loadable in a camera includes a box-shaped pack and plural stacked self-developing photo film units of a mono-sheet type contained therein. The pack includes an upper wall having an exposure opening for providing the photo film units with an exposure, and a front wall having an exit slot for exiting the photo film units. The photo film units have a developing solution pod for containing developing solution along an advancing edge thereof. A bottom edge of each one of the photo film units is pushed by an ejecting claw after the exposure to advance the advancing edge through the exit slot. The each one photo film unit is contacted by a spreading control member while moved to a pair of spreader rollers.

Abstract: A photo film cassette has a spool about which photo film is wound in a roll form. A cassette shell contains the spool in a rotatable manner, and has first and second plastic shell halves joined together via a joining line. A first extended portion is disposed on the first shell half, to project from the joining line toward the second shell half. A first claw is disposed on an end of the first extended portion, to project inwards, and has a first engaging face confronted with the joining line. A securing cutout is formed in the second shell half and disposed close to the joining line, for receiving the first extended portion. A second extended portion is disposed on the second shell half, to project from an edge of the securing cutout, and is extended inwards, and covered by the first extended portion partially. A second claw is disposed on an end of the second extended portion, to project outwards, and retains the first claw to secure the first shell half to the second shell half.

Abstract: A photographic film cassette has a rotatable spool on which photographic film is wound. A leader of the photographic film is advanced outward through a passage port by rotation of the spool in an unwinding direction. A shutter rod is arranged in the passage port, and is rotated between closed and open positions. When assuming the closed position, the shutter rod blocks the passage port to shield the ambient light. When the shutter rod assumes the open position, the photographic film is allowed to pass. An externally operable locking lever regulates rotation of the shutter rod, and is swingable with resilience between a locking position, where the shutter rod is locked in the closed position, and an unlocking position, where the shutter rod is unlocked. When the spool is rotated, the lever rotates the shutter rod to the open position.

Abstract: A photo film cassette has a cassette shell including first and second shell halves. A spool is rotatable between the shell halves. A trailer of the photo film is retained to the spool. The photo film is wound thereabout in a roll form. A photo film passageway is formed between the shell halves, for passage of the photo film. A shutter is disposed in the photo film passageway in rotatable fashion between open and closed positions to open/close the photo film passageway. A spool lock lever, when the shutter has the closed position, stops the spool from rotating. An indicator plate is secured to one axial end of the spool, for indicating information externally through indicator windows. A partition, disposed inside the cassette shell, defines a photo film chamber and an indicator chamber into which the cassette shell is split. The indicator chamber contains the spool lock lever and the indicator plate in rotatable fashion.