Abstract: A puncture repair liquid unit and a puncture repair kit each has an extraction cap and a container. The extraction cap has a first flow path, a second flow path, and a third flow path. The first flow path extends between a first inlet connectable to an external compressor device for generating compressed air and a first outlet opening in the container. The second flow path extends between a second inlet opening in the container and a second outlet for taking out a puncture repair liquid from the extraction cap to supply to a punctured tire to be repaired. The second inlet communicates with the first outlet via the space of the container. The third flow path communicates with the first and second flow paths outside the space of the container so that a portion of the compressed air in the first flow path flows into the second flow path.

Abstract: By the present invention, an inner lid is easily removed by upward thrusting of a sheath tube while detachment of the inner lid during storage is suppressed. An extraction cap is provided with: a cap body provided with a barrel part, a top-end part of which attaches to a mouth of a bottle container, and an air supply tube standing from a bottom portion of the barrel part and forming a first flow channel; and a sheath tube arranged and retained around an exterior of the air supply tube so as to be able to slide up and down. An inner lid is fitted on a top-end part of the air supply tube. An annular first retaining protrusion extending in the circumferential direction is formed on an external peripheral surface of the air supply tube, and a second retaining protrusion retained by the first retaining protrusion and comprising a plurality of retaining protrusions arranged at intervals in the circumferential direction is formed on an internal peripheral surface of the inner lid.

Abstract: To control compressed air to a prescribed pressure without using a relief valve and a chamber and to suppress deviation of the pressure. A compressor device 2 of a puncture repair kit 1 has a pressure gauge 6. The pressure gauge 6 has a tubular body portion 18 provided in a front end portion with a communicating hole 21 communicating with a surge chamber 12B, a piston 19 movable within the tubular body portion 18 in the longitudinal direction by the compressed air from the communicating hole 21, and a spring 20 biasing the piston 19 toward the front end and changing its displacement according to the magnitude of the pressure of the compressed air. An exhaust port 25 is formed on the peripheral wall of the tubular body portion 18. The exhaust port 25 releases the compressed air when a seal ring 23 of the piston 19 exceeds the exhaust port 25.

Abstract: The purpose of the present invention is to prevent an extraction cap from getting detached under high-temperature environments while minimizing the force for attaching the extraction cap under low-temperature environments. A connecting means (7) for connecting a compressor (3) and an extraction cap (5) is composed of first and second connecting portions (7A, 7B). The first connecting portion (7A) has a hook pawl portions (28) at the tip end part of each of a pair of plate-shaped base portions (27) extending in a coupling direction from the extraction cap (5) through on both sides of an intake port portion (10), the hook pawl portions (28) having a triangular cross-sectional shape and including a locking surface (28S) projecting outwardly. The second connecting portion (7B) has an engaging surface (29S) that engages with the locking surfaces (28S).

Abstract: To control compressed air to a prescribed pressure without using a relief valve and a chamber and to suppress deviation of the pressure. A compressor device 2 of a puncture repair kit 1 has a pressure gauge 6. The pressure gauge 6 has a tubular body portion 18 provided in a front end portion with a communicating hole 21 communicating with a surge chamber 12B, a piston 19 movable within the tubular body portion 18 in the longitudinal direction by the compressed air from the communicating hole 21, and a spring 20 biasing the piston 19 toward the front end and changing its displacement according to the magnitude of the pressure of the compressed air. An exhaust port 25 is formed on the peripheral wall of the tubular body portion 18. The exhaust port 25 releases the compressed air when a seal ring 23 of the piston 19 exceeds the exhaust port 25.

Abstract: A semiconductive roller is provided which includes a roller body formed from a highly extrudable rubber composition containing an SBR and an epichlorohydrin rubber in combination as a rubber component, the roller body having a higher production yield and higher toner imaging durability, and unlikely to suffer from reduction in image density due to adhesion of toner and a contact mark on an outer peripheral surface thereof with a smaller compression set. In the rubber component, the SBR and the epichlorohydrin rubber are present in an SBR excess state. In the rubber composition, a crosslinking component for crosslinking the rubber component includes a sulfur crosslinking agent and 0.75 to 3 parts by mass of a thiazole accelerating agent based on 100 parts by mass of the rubber component. The roller body (2) of the semiconductive roller (1) is made of a crosslinking product of the rubber composition.

Abstract: By the present invention, an inner lid is easily removed by upward thrusting of a sheath tube while detachment of the inner lid during storage is suppressed. An extraction cap is provided with: a cap body provided with a barrel part, a top-end part of which attaches to a mouth of a bottle container, and an air supply tube standing from a bottom portion of the barrel part and forming a first flow channel; and a sheath tube arranged and retained around an exterior of the air supply tube so as to be able to slide up and down. An inner lid is fitted on a top-end part of the air supply tube. An annular first retaining protrusion extending in the circumferential direction is formed on an external peripheral surface of the air supply tube, and a second retaining protrusion retained by the first retaining protrusion and comprising a plurality of retaining protrusions arranged at intervals in the circumferential direction is formed on an internal peripheral surface of the inner lid.

Abstract: A developing roller is provided which is capable of forming a toner layer having the most uniform possible thickness on an outer peripheral surface of a roller body thereof. The roller body (2) of the developing roller (1) is formed from a rubber composition containing a base rubber which is a mixture of NBR and/or SBR, CR, an epichlorohydrin rubber and IIR, wherein the IIR is present in a proportion of not less than 2.5 parts by mass and not greater than 20 parts by mass in 100 parts by mass of the base rubber.

Abstract: An inventive developing roller is adapted for use in an electrophotographic image forming apparatus. The developing roller includes a roller body. At least an outer peripheral surface of the roller body is formed from a rubber composition containing a base rubber. The base rubber contains a styrene butadiene rubber in a proportion of not less than 10 mass % and not greater than 70 mass % based on the overall amount of the base rubber. The outer peripheral surface of the rubber body has a surface roughness Ra of not less than 0.78 ?m and not greater than 1.8 ?m.

Abstract: A developing roller is provided which is capable of forming a toner layer having the most uniform possible thickness on an outer peripheral surface of a roller body thereof. The roller body (2) of the developing roller (1) is formed from a rubber composition comprising: a base rubber which is a mixture comprising NBR and/or SBR, CR and an epichlorohydrin rubber; and not less than 2.5 parts by mass and not greater than 15 parts by mass of a tackiness imparting agent based on 100 parts by mass of the base rubber.

Abstract: The semiconductive roller according to the present invention includes a roller body having an outer peripheral surface made of a crosslinked substance of a semiconductive rubber composition and exhibiting Shore A hardness of not more than 60, the semiconductive rubber composition contains a base polymer made of a mixture of (1) mixed rubber N of liquid nitrile rubber and solid nitrile rubber, (2) chloroprene rubber C, and (3) epichlorohydrin rubber E in a mass ratio (C+E)/N of 10/90 to 80/20, the ratios of the chloroprene rubber and the epichlorohydrin rubber in the total quantity of the base polymer are not less than 5 mass % and not less than 5 mass % respectively, and roller resistance at an applied voltage of 5 V is not less than 104? and not more than 109?.

Abstract: A semiconductive roller is provided which includes a roller body formed from a highly extrudable rubber composition containing an SBR and an epichlorohydrin rubber in combination as a rubber component, the roller body having a higher production yield and higher toner imaging durability, and unlikely to suffer from reduction in image density due to adhesion of toner and a contact mark on an outer peripheral surface thereof with a smaller compression set. In the rubber component, the SBR and the epichlorohydrin rubber are present in an SBR excess state. In the rubber composition, a crosslinking component for crosslinking the rubber component includes a sulfur crosslinking agent and 0.75 to 3 parts by mass of a thiazole accelerating agent based on 100 parts by mass of the rubber component. The roller body (2) of the semiconductive roller (1) is made of a crosslinking product of the rubber composition.

Abstract: A developing roller is provided, which is particularly used in an image forming apparatus of a highly durable design and is free from toner leakage even after formation of a predetermined number of images. Opposite end regions (5a) of an outer peripheral surface (5) of a roller body (2) of the developing roller (1) to be respectively kept in sliding contact with seal members each have a friction coefficient ? of not greater than 0.15.

Abstract: A developing roller is provided which is capable of forming a toner layer having the most uniform possible thickness on an outer peripheral surface of a roller body thereof. The roller body (2) of the developing roller (1) is formed from a rubber composition containing a base rubber which is a mixture of NBR and/or SBR, CR, an epichlorohydrin rubber and IIR, wherein the IIR is present in a proportion of not less than 2.5 parts by mass and not greater than 20 parts by mass in 100 parts by mass of the base rubber.

Abstract: A developing roller is provided which is capable of forming a toner layer having the most uniform possible thickness on an outer peripheral surface of a roller body thereof. The roller body (2) of the developing roller (1) is formed from a rubber composition comprising: a base rubber which is a mixture comprising NBR and/or SBR, CR and an epichlorohydrin rubber; and not less than 2.5 parts by mass and not greater than 15 parts by mass of a tackiness imparting agent based on 100 parts by mass of the base rubber.

Abstract: A developing roller is provided, which is particularly used in an image forming apparatus of a highly durable design and is free from toner leakage even after formation of a predetermined number of images. Opposite end regions (5a) of an outer peripheral surface (5) of a roller body (2) of the developing roller (1) to be respectively kept in sliding contact with seal members each have a friction coefficient ? of not greater than 0.15.

Abstract: An inventive developing roller is adapted for use in an electrophotographic image forming apparatus. The developing roller includes a roller body. At least an outer peripheral surface of the roller body is formed from a rubber composition containing a base rubber. The base rubber contains a styrene butadiene rubber in a proportion of not less than 10 mass % and not greater than 70 mass % based on the overall amount of the base rubber. The outer peripheral surface of the rubber body has a surface roughness Ra of not less than 0.78 ?m and not greater than 1.8 ?m.

Abstract: The semiconductive roller according to the present invention includes a roller body having an outer peripheral surface made of a crosslinked substance of a semiconductive rubber composition and exhibiting Shore A hardness of not more than 60, the semiconductive rubber composition contains a base polymer made of a mixture of (1) mixed rubber N of liquid nitrile rubber and solid nitrile rubber, (2) chloroprene rubber C, and (3) epichlorohydrin rubber E in a mass ratio (C+E)/N of 10/90 to 80/20, the ratios of the chloroprene rubber and the epichlorohydrin rubber in the total quantity of the base polymer are not less than 5 mass % and not less than 5 mass % respectively, and roller resistance at an applied voltage of 5 V is not less than 104? and not more than 109?.