Abstract: An endoscope flexible tube comprises: a tubular structure having flexibility; and a shell layer on an outer peripheral surface of the tubular structure, wherein the shell layer has a two-layer structure including a rigid resin layer of a rigid resin and a soft resin layer of a soft resin, and wherein the two-layer structure is maintained over the entire flexible tube in its length direction.

Abstract: Upon starting continuous extrusion, the temperature of a hard resin and a soft resin is increased in extrusion sections. A screw of the extrusion section of the hard resin is set at high rpm at first. The hard resin reaches a maximum temperature ?(° C.) by heating of friction with the screw, and comes to have high flowability. Upon starting conveyance of an assembly, a large amount of molten hard resin and a small amount of molten soft resin are extruded onto the periphery of a tubular structure. Upon passage of a point A of the tubular structure under annular discharge throats, the extrusion amount of the hard resin starts gradually decreasing, and the extrusion amount of the soft resin starts gradually increasing. Since the temperature of the hard resin starts dropping a short time after the decrease in the extrusion amount, the hard resin maintains the high flowability.

Abstract: An endoscope flexible tube comprises: a tubular structure having flexibility; and a shell layer on an outer peripheral surface of the tubular structure, wherein the shell layer has a two-layer structure including a rigid resin layer of a rigid resin and a soft resin layer of a soft resin, and wherein the two-layer structure is maintained over the entire flexible tube in its length direction.

Abstract: An inlet, first to third carrying roller pairs, and a high-speed discharge roller pair are disposed along a first passage of a passage changing section of a photographic printer. Fourth to sixth carrying roller pairs are disposed at a second passage of the passage changing section. First to sixth carrying guides are respectively disposed between the inlet and the first carrying roller pair and between the respective carrying roller pairs. The carrying guides are slantingly disposed relative to the first and second passages such that a downstream guide end of the carrying guide in a carrying direction is nearer to the passage than an upstream guide end thereof. Thus, a recording surface of a recording material is prevented from being damaged.

Abstract: A photographic film take-up device having: a holding device for holding a cartridge main body accommodating a spool having a trailing end engaging member in an interior thereof, the trailing end engaging member engaging a trailing end portion of an elongated photographic film, an interior portion of the cartridge main body being shielded from light; and a guiding member having an engaging portion which engages the longitudinal direction trailing end portion of the film, and engaging the engaging portion with the trailing end portion of the film, and guiding the engaging portion and the trailing end portion of the film to the spool via a film path provided in the cartridge main body, and engaging the trailing end portion of the film with the trailing end engaging member.

Abstract: A photographic film separation method. A spool has a slit, a first rod-shaped member and a second rod-shaped member. The second rod-shaped member has a lower rigidity than that of the first rod-shaped member so that the second rod-shaped member is flexibly deformable. The first rod-shaped member has an engagement member which engages one longitudinal direction end portion of a photographic film. The second rod-shaped member has a presser pawl which maintains engagement between the photographic film and the engagement member. The separating member has a higher rigidity than that of the second rod-shaped member, and has a tip end portion which penetrates substantially simultaneously to positions at which the engagement member and the presser pawl are provided. The separating member is inserted between the engagement member and the photographic film positioned inside the slit, and releases the engagement between the photographic film and the engagement member.