Abstract: There is provided a heat sealing device that seals a film for packaging an article by heat welding, with the film sandwiching the article in between and being disposed in a partially overlapped state around the article, the heat sealing device including: a sealing head that heat-welds a seal portion to be sealed in the film; a first cooling head that cools the seal portion after heat welding by the sealing head; and a second cooling head that cools at least a part of an article side region in the film, which is located on an article side with respect to the seal portion.

Abstract: An aging apparatus has a roller group consisting of a front roller, a middle roller and a rear roller, and a table for supporting the roller group. The middle roller takes a press state pressing a flexible tube with a constant force and a retraction state staying away from the flexible tube. In aging operation, while the middle roller comes in the press state, the table moves from a start position being a farthest end of the flexible tube to an end position. After the aging operation, the middle roller comes in the retraction state and the table returns to the start position. The aging operation is performed a predetermined number of times on the same flexible tube, so that the flexible tube is bent more largely with increase in the number of execution.

Abstract: An aging apparatus has a roller group consisting of a front roller, a middle roller and a rear roller, and a table for supporting the roller group. The middle roller takes a press state pressing a flexible tube with a constant force and a retraction state staying away from the flexible tube. In aging operation, while the middle roller comes in the press state, the table moves from a start position being a farthest end of the flexible tube to an end position. After the aging operation, the middle roller comes in the retraction state and the table returns to the start position. The aging operation is performed a predetermined number of times on the same flexible tube, so that the flexible tube is bent more largely with increase in the number of execution.

Abstract: A lens-fitted photo film unit includes a flash unit for applying flash light to a photographic object. An exposure amount changer, such as an aperture stop changing mechanism, changes over object light incident on photo film from the object between low and high exposure amounts. For the lens-fitted photo film unit, a photographic mode selection device includes a movable selector, such as a button, for selectively designating a daylight mode, a daylight flash mode and a night flash mode. The movable selector, when the daylight mode is designated, determines the low exposure amount and turns off the flash unit, and when the daylight flash mode is designated, determines the low exposure amount and turns on the flash unit, and when the night flash mode is designated, determines the high exposure amount and turns on the flash unit.

Abstract: A lens-fitted photo film unit includes a flash unit for applying flash light to a photographic object. An exposure amount changer, such as an aperture stop changing mechanism, changes over object light incident on photo film from the object between low and high exposure amounts. For the lens-fitted photo film unit, a photographic mode selection device includes a movable selector, such as a button, for selectively designating a daylight mode, a daylight flash mode and a night flash mode. The movable selector, when the daylight mode is designated, determines the low exposure amount and turns off the flash unit, and when the daylight flash mode is designated, determines the low exposure amount and turns on the flash unit, and when the night flash mode is designated, determines the high exposure amount and turns on the flash unit.

Abstract: A lens-fitted photo film unit includes a flash unit for applying flash light to a photographic object. An exposure amount changer, such as an aperture stop changing mechanism, changes over object light incident on photo film from the object between low and high exposure amounts. For the lens-fitted photo film unit, a photographic mode selection device includes a movable selector, such as a button, for selectively designating a daylight mode, a daylight flash mode and a night flash mode. The movable selector, when the daylight mode is designated, determines the low exposure amount and turns off the flash unit, and when the daylight flash mode is designated, determines the low exposure amount and turns on the flash unit, and when the night flash mode is designated, determines the high exposure amount and turns on the flash unit.

Abstract: A lens-fitted photo film unit includes a flash unit for applying flash light to a photographic object. An exposure amount changer, such as an aperture stop changing mechanism, changes over object light incident on photo film from the object between low and high exposure amounts. For the lens-fitted photo film unit, a photographic mode selection device includes a movable selector, such as a button, for selectively designating a daylight mode, a daylight flash mode and a night flash mode. The movable selector, when the daylight mode is designated, determines the low exposure amount and turns off the flash unit, and when the daylight flash mode is designated, determines the low exposure amount and turns on the flash unit, and when the night flash mode is designated, determines the high exposure amount and turns on the flash unit.

Abstract: A take-up shaft is adapted to taking up photo film from a photo film cassette having the photo film, and particularly used in a lens-fitted photo film unit. The photo film cassette includes a cassette spool on which the photo film is wound in a roll form. A cassette shell contains the cassette spool in rotatable fashion. The take-up shaft has a shaft body (46, 53, 72, 81) having a substantially cylindrical shape. A nip device (47, 52, 73) is disposed inside the shaft body, and nips a leader (26b) in removable fashion. The shaft body is rotated with the leader, to wind the photo film in a roll form (26a). At least one curved face (46c, 53c, 57b, 62b, 64c, 72a, 81a) is formed between the inside of the shaft body and a cylindrical face of the shaft body and at a radius of curvature 0.4-0.85 time as long as a radius of the shaft body, and prevents the leader secured to the shaft body from being sharply bent.

Abstract: A take-up shaft is adapted to taking up photo film from a photo film cassette having the photo film, and particularly used in a lens-fitted photo film unit. The photo film cassette includes a cassette spool on which the photo film is wound in a roll form. A cassette shell contains the cassette spool in rotatable fashion. The take-up shaft has a shaft body (46, 53, 72, 81) having a substantially cylindrical shape. A nip device (47, 52, 73) is disposed inside the shaft body, and nips a leader (26b) in removable fashion. The shaft body is rotated with the leader, to wind the photo film in a roll form (26a). At least one curved face (46c, 53c, 57b, 62b, 64c, 72a, 81a) is formed between the inside of the shaft body and a cylindrical face of the shaft body and at a radius of curvature 0.4-0.85 time as long as a radius of the shaft body, and prevents the leader secured to the shaft body from being sharply bent.