Abstract: Provided is a pneumatic tire. A band-like sound absorptive member is fixed to the inner surface of a tread portion along the tire circumferential direction. An end portion in the tire width direction of the sound absorptive member is located on the outer side in the tire width direction with respect to a shoulder main groove located on the outermost side in the tire width direction. A width W1 of the sound absorptive member in the tire width direction and a tread development width TDW of the tread portion satisfy a relationship of 0.65?(W1/TDW)?0.90. The width W1 of the sound absorptive member and a belt width W2 of a first belt ply having the maximum width of a belt layer satisfy a relationship of 0.70?(W1/W2)?0.95.

Abstract: A pneumatic tire that includes a tread portion extending in a tire circumferential direction and having an annular shape, a pair of sidewall portions disposed on both tread portion sides, and a pair of bead portions each disposed radially on an inner side of the sidewall portions. A first filler rubber is disposed on an outer circumference of a bead core of each bead portion, a carcass layer mounted between the pair of bead portions, a plurality of belt layers disposed on an outer circumferential side of the carcass layer and turned up from a tire inner to a tire outer side around the bead core. A second filler rubber is disposed on an outer side of the carcass layer in a tire width direction, and a transponder is disposed between the carcass layer and the second filler rubber in contact with the second filler rubber.

Abstract: Included in a pneumatic tire are a tread extending in a circumferential direction and having an annular shape, sidewalls disposed on both sides of the tread, and beads disposed on an inner side of the sidewalls in a radial direction. A bead filler is disposed on an outer circumference of a bead core of each of the beads, a carcass layer is mounted between the beads, a reinforcing layer formed of an organic fiber cord is adjacent to an outer side of the bead filler in a width direction, a height of an upper end of the reinforcing layer is equal to or greater than a height of an upper end of the bead filler, and a transponderis between a position of an outer side in the radial direction by 15 mm from an upper end of the bead core and the upper end of the reinforcing layer.

Abstract: In a pneumatic tire in which a carcass layer is turned up from a tire inner side to a tire outer side around a bead core, the carcass layer is formed of a reinforcing cord made of a polyester fiber cord, elongation at break of the reinforcing cord of the carcass layer ranges from 20% to 30%, and a transponder is disposed between a position of an outer side in a tire radial direction by 15 mm from an upper end of the bead core and a position of an inner side in the tire radial direction by 5 mm from an end of a belt layer.

Abstract: Provided is a pneumatic tire. A band-like sound absorptive member is fixed to the inner surface of a tread portion along the tire circumferential direction. An end portion in the tire width direction of the sound absorptive member is located on the outer side in the tire width direction with respect to a shoulder main groove located on the outermost side in the tire width direction. A width W1 of the sound absorptive member in the tire width direction and a tread development width TDW of the tread portion satisfy a relationship of 0.65?(W1/TDW)?0.90. The width W1 of the sound absorptive member and a belt width W2 of a first belt ply having the maximum width of a belt layer satisfy a relationship of 0.70?(W1/W2)?0.95.

Abstract: In a pneumatic tire including a tread portion extending in a tire circumferential direction and having an annular shape, a pair of sidewall portions respectively disposed on both sides of the tread portion, and a pair of bead portions disposed on an inner side of the pair of sidewall portions in a tire radial direction, a transponder is embedded in one of the sidewall portions extending in the tire circumferential direction, the transponder is covered with a coating layer, a relative dielectric constant of the coating layer is lower than a relative dielectric constant of a peripheral rubber member adjacent to the coating layer, and a shortest distance D from an outer edge of the coating layer to the transponder in a tire meridian cross-section is 0.3 mm or more.

Abstract: Provided is a pneumatic tire that can provide improved communication performance of a transponder while ensuring durability of the tire. In a pneumatic tire including a tread portion extending in a tire circumferential direction and having an annular shape, a pair of sidewall portions respectively disposed on both sides of the tread portion, and a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction, a transponder is embedded in one of the sidewall portions, the transponder is covered with a coating layer, a relative dielectric constant of the coating layer is lower than a relative dielectric constant of a peripheral rubber member adjacent to the coating layer, and a total thickness Gac of the coating layer and a maximum thickness Gar of the transponder satisfy a relationship 1.1?Gac/Gar?3.0.

Abstract: Provided are an RFID (radio frequency identification) module and a pneumatic tire in which the RFID module is embedded. An RFID module includes an IC (integrated circuit) substrate that stores data, an antenna that transmits and receives data, and a covering layer that covers the antenna. The covering layer contains calcium carbonate, and a relative dielectric constant of the covering layer is 7 or less.

Abstract: A pneumatic tire is provided that enables communication performance and scratch resistance of a transponder to be improved, A transponder (20) that extends along a tire circumferential direction is embedded between a carcass layer (4) and an innerliner layer, and the transponder (20) is disposed between a position (P1) located on an outer side of and 15 mm away from an upper end (5e) of a bead core (5) in a tire radial direction and a position (P2) located on an inner side of and 5 mm away from an end (7e) of a belt layer (7)in the tire radial direction.

Abstract: In a pneumatic tire in which a carcass layer is turned up from a tire inner side to a tire outer side around a bead core of each bead portion, a transponder is embedded between the carcass layer and a rubber layer disposed in a sidewall portion on an outer side of the carcass layer, the transponder extending along a tire circumferential direction in contact with the rubber layer, and the transponder is disposed 10 mm or more away from an end of a turned up portion of the carcass layer in a tire radial direction.

Abstract: In a pneumatic tire in which a carcass layer is turned up from a tire inner side to a tire outer side around a bead core, an end of a turned up portion of the carcass layer is disposed between a body portion of the carcass layer and a belt layer, a transponder that extends along time circumferential direction is embedded between the turned up portion of the carcass layer and a rubber layer disposed in a sidewall portion on an outer side of the carcass layer, and the transponder is disposed between a position (P1) located on an outer side of and 15 mm away from an upper end of the bead core in a tire radial direction and a position (P2) located on an inner side of and 5 mm away from an end of the belt layer in the tire radial direetion

Abstract: A pneumatic tire includes a transponder extending along a circumferential direction embedded between a position (P1) located on an outer side of and 15 mm away from an upper end of a bead core in a radial direction and a position (P2) located on an inner side of and 5 mm away from an end of a belt layer in the radial direction, and a tire inner surface in which a release agent layer made of a release agent is formed has a surface electric resistivity of 109 ?·cm to 1015 ?·cm. The transponder extending along the circumferential direction is embedded between the position (P1) and the position (P2), and the amount of silicon of the release agent at least in the tire inner surface corresponding to an embedment section for the transponder is 10.0 wt % or less or a thickness of the release agent is 100 ?m or less.

Abstract: A pneumatic tire includes a tread with inner and outer main grooves; a center land portion between the inner main grooves; intermediate land portions between the inner main grooves and the outer main grooves; and shoulder land portions outward of the outer main grooves. The land portions include sipes having a three-dimensional shape; the intermediate land portions include lug grooves having a bent portion; the lug grooves include one end that opens to one of the outer main grooves and the other end that terminates within the intermediate land portion; a groove width of the inner main grooves is from 28% to 33% with respect to a width of the center land portion and of the intermediate land portions; and a groove width of the outer main grooves is from 28% to 33% with respect to the width of the center land portion and of the intermediate land portions.

Abstract: A pneumatic tire includes a first main groove on the outer side in the vehicle width direction of the equatorial plane, a second main groove closer to the equatorial plane than the first main groove, a third main groove on the inner side in the vehicle width direction of the equatorial plane, a fourth main groove farther from the equatorial plane than the third main groove, a first narrow groove between the third and fourth main grooves, and a first groove portion extending in the width direction between the first narrow groove and the fourth main groove and opening at one end to the fourth main groove. A relationship between the first main groove width G1, the third main groove width G3, and the fourth main groove width G4 satisfies 1.05?G1/G3?1.25, 1.10?G4/G3?1.30, and G3<G1<G4.

Abstract: In a pneumatic tire, regions on an outer side in a radial direction of maximum width positions of outer surfaces of sidewall portions include decorative regions and display regions adjacent to the decorative regions in a circumferential direction, the decorative regions being formed by serration processing to include an array of parallel ridges, the display regions including a portion where a smooth surface without ridges extends in the circumferential direction between end portions of the decorative regions, and being including an indication formed by combining constituent units each depicting an alphanumeric, a pattern, or a symbol, a valley formed between adjacent ridges in the decorative regions being recessed relative to the smooth surface, and the display regions in one of the sidewall portions on one side and in another one of the sidewall portions on the other side being arranged at positions shifted from each other in the circumferential direction.

Abstract: In a pneumatic tire, regions on an outer side in a radial direction of maximum width positions of outer surfaces of sidewall portions include decorative regions and display regions adjacent to the decorative regions in a circumferential direction, the decorative regions being formed by serration processing to include an array of parallel ridges, the display regions including a portion where a smooth surface without ridges extends in the circumferential direction between end portions of the decorative regions, and being including an indication formed by combining constituent units each depicting an alphanumeric, a pattern, or a symbol, a valley formed between adjacent ridges in the decorative regions being recessed relative to the smooth surface, and the display regions in one of the sidewall portions on one side and in another one of the sidewall portions on the other side being arranged at positions shifted from each other in the circumferential direction.

Abstract: Provided is a remaining toner conveying apparatus including a cleaning blade which recovers a toner remaining on a surface of a photosensitive drum and a conveying screw which conveys the remaining toner so that a conveyance amount per predetermined time in a first conveyance path conveying the remaining toner recovered by the cleaning blade to a discharge portion for discharging the remaining toner is equal to or less than a conveyance amount in a second conveyance path in a downstream side in a conveyance direction where the conveyance path is narrower than the first conveyance path.

Abstract: Provided is an image forming apparatus capable of appropriately setting a range of a charging voltage for electrically charging an image bearing member. A charging roller (2) and a charging power source (S1) are configured to apply a voltage between the charging roller (2) and a photosensitive drum (1) to electrically charge the photosensitive drum (1). A control circuit (13) is configured to set a voltage for obtaining a predetermined discharge current by the charging roller (2) with the photosensitive drum (1). The control circuit (13) is configured to determine, depending on a state of a resistance acting on an electric current flowing between the charging roller (2) and the photosensitive drum (1), at least one of an upper limit or a lower limit of the voltage set by the control circuit (13).

Abstract: Provided is a remaining toner conveying apparatus including a cleaning blade which recovers a toner remaining on a surface of a photosensitive drum and a conveying screw which conveys the remaining toner so that a conveyance amount per predetermined time in a first conveyance path conveying the remaining toner recovered by the cleaning blade to a discharge portion for discharging the remaining toner is equal to or less than a conveyance amount in a second conveyance path in a downstream side in a conveyance direction where the conveyance path is narrower than the first conveyance path.

Abstract: Provided is an image forming apparatus capable of appropriately setting a range of a charging voltage for electrically charging an image bearing member. A charging roller (2) and a charging power source (S1) are configured to apply a voltage between the charging roller (2) and a photosensitive drum (1) to electrically charge the photosensitive drum (1). A control circuit (13) is configured to set a voltage for obtaining a predetermined discharge current by the charging roller (2) with the photosensitive drum (1). The control circuit (13) is configured to determine, depending on a state of a resistance acting on an electric current flowing between the charging roller (2) and the photosensitive drum (1), at least one of an upper limit or a lower limit of the voltage set by the control circuit (13).