Abstract: A plasma monitoring system includes a monitoring device and a control device. The monitoring device is a device to be placed on a stage in the plasma processing apparatus. The monitoring device includes a plate-shaped base substrate, and a plurality of spectroscopes having optical axes facing upward on the base substrate, and being disposed apart from each other to acquire light emission intensities of the plasma. The control device acquires light emission intensity distribution data of the plasma in the plasma processing apparatus based on the light emission intensity acquired by each of the plurality of spectroscopes.

Abstract: A particle monitoring system includes a light emitting device for irradiating an inside of a plasma processing apparatus with light, and a monitoring device to be placed on a stage in the plasma processing apparatus. The monitoring device includes a base substrate, a plurality of imaging devices, and a control device. The base substrate has a plate shape. The plurality of imaging devices have optical axes facing upward on the base substrate, and are disposed apart from each other to capture images including scattered light from the particle irradiated with the light. The control device discriminates the particle in the images captured by the plurality of imaging devices.

Abstract: A fuel tank includes an upper surface portion, a bottom surface portion, and a peripheral wall portion, and a weir portion vertically arranged at the bottom surface portion and causing a fuel in a predetermined amount to stay in a predetermined position of an inner portion when a vehicle body is inclined. The peripheral wall portion includes a first wall and a second wall which is perpendicular to and continuous with one end side of the first wall. The weir portion includes a first weir, a second weir, a third weir parallel to the first weir, a fourth weir parallel to the first weir and arranged between the first weir and the third weir, and a fifth weir interconnecting the third weir and the fourth weir.

Abstract: A fuel tank includes an upper surface portion, a bottom surface portion, and a peripheral wall portion, and a weir portion vertically arranged at the bottom surface portion and causing a fuel in a predetermined amount to stay in a predetermined position of an inner portion when a vehicle body is inclined. The peripheral wall portion includes a first wall and a second wall which is perpendicular to and continuous with one end side of the first wall. The weir portion includes a first weir, a second weir, a third weir parallel to the first weir, a fourth weir parallel to the first weir and arranged between the first weir and the third weir, and a fifth weir interconnecting the third weir and the fourth weir.

Abstract: A method for manufacturing a composite preform is provided, including preparing a preform that is formed from a plastic material, preparing a tubular heat shrinkable plastic member that is longer than the preform and has a margin for thermocompression bonding at one end, inserting the preform into the plastic member having the plastic member undergo thermal shrinkage by heating the preform and the plastic member, and bonding the margin of the plastic member by thermocompression.

Abstract: This method for manufacturing a composite preform (70) includes: preparing a preform (10a) that is formed from a plastic material; preparing a tubular heat shrinkable plastic member (40a) that is longer than the preform (10a) and has a margin (80a) for thermocompression bonding at one end; inserting the preform (10a) into the plastic member (40a); having the plastic member (40a) undergo thermal shrinkage by heating the preform (10a) and the plastic member (40a); and bonding the margin (80a) of the plastic member by thermocompression.

Abstract: A roller hemming device includes a large diameter roller having a large tapered surface and a small diameter roller having a small cylindrical surface. The small diameter roller is coaxially disposed with the large diameter roller. The small diameter roller and the large diameter roller enable to relatively move in an axial direction. The outer diameter of the small cylindrical surface is smaller than the minimum outer diameter of the large tapered surface.

Abstract: A roller hemming device includes a large diameter roller having a large tapered surface and a small diameter roller having a small cylindrical surface. The small diameter roller is coaxially disposed with the large diameter roller. The small diameter roller and the large diameter roller enable to relatively move in an axial direction. The outer diameter of the small cylindrical surface is smaller than the minimum outer diameter of the large tapered surface.

Abstract: A plurality of undulations are continuously formed on a front surface and a back surface of at least a beam portion in an injection molded article, and warpage generated by molding is prevented. Injection molding of the present invention is effective for, for example, prevention of the warpage of a beam generated by influences of light intercepting ridges formed on an inner surface of a lens barrel or the like.

Abstract: A polygon mirror includes a mounting portion and a plurality of reflective surfaces. The mounting portion is mounted on a rotating body having a support surface. The mounting portion has the shape of a polygonal plate. The plurality of reflective surfaces are arranged around the rotating body so as to surround the rotating body. A plurality of protrusions configured to abut against the support surface of the rotating body are arranged on one side of the mounting portion.

Abstract: A polygon mirror includes a reflective surface group having n number of reflective surfaces (M(1), . . . , M(n)) formed individually as outer peripheral side faces, a flat portion which shuts one end portion of the reflective surface group, and n number of pin gate traces (L(1), . . . , L(n)) which are provided on the flat portion, correspond to the n number of reflective surfaces, individually, and are kept individually at distances from edge portions at which the reflective surfaces cross the flat portion. There are conditions DM(1)>DL(1)/2, . . . , DM(n)>DL(n)/2 and DM(1)>DL(n)/2, . . . , DM(n)>DL(n?1)/2, where DM(n) is a shortest distance from an edge portion at which the reflective surface M(n) and the flat portion cross each other to the pin gate trace L(n) and DL(n) is a shortest distance between the pin gate trace L(n) and the pin gate trace L(1).

Abstract: A cylindrical member, which is a cylindrical part molded by injection molding, has a cylindrical shape having a substantially uniform thickness in a circumferential direction and whose both end-face edge portions are opened, in which a band-state groove portion for forming a thin portion along the outer circumference of a cylindrical center portion forming a cylindrical portion and a thick edge portion along the outer circumference of the both end-face edge portions are provided. Since the band-state groove portion and the thick edge portion are provided, the temperature of the cylindrical member does not become relatively high at the center portion, while the temperature of the end-face portions does not become relatively low at molding, and molding contraction rates are made uniform in general and the cylindrical member with good form accuracy can be obtained.

Abstract: A plurality of undulations are continuously formed on a front surface and a back surface of at least a beam portion in an injection molded article, and warpage generated by molding is prevented. Injection molding of the present invention is effective for, for example, prevention of the warpage of a beam generated by influences of light intercepting ridges formed on an inner surface of a lens barrel or the like.

Abstract: A polygon mirror includes a reflective surface group having n number of reflective surfaces (M(1), . . . , M(n)) formed individually as outer peripheral side faces, a flat portion which shuts one end portion of the reflective surface group, and n number of pin gate traces (L(1), . . . , L(n)) which are provided on the flat portion, correspond to the n number of reflective surfaces, individually, and are kept individually at distances from edge portions at which the reflective surfaces cross the flat portion. There are conditions DM(1)>DL(1)/2, . . . , DM(n)>DL(n)/2 and DM(1)>DL(n)/2, . . . , DM(n)>DL(n?1)/2, where DM(n) is a shortest distance from an edge portion at which the reflective surface M(n) and the flat portion cross each other to the pin gate trace L(n) and DL(n) is a shortest distance between the pin gate trace L(n) and the pin gate trace L(1).

Abstract: A polygon mirror includes a mounting portion and a plurality of reflective surfaces. The mounting portion is mounted on a rotating body having a support surface. The mounting portion has the shape of a polygonal plate. The plurality of reflective surfaces are arranged around the rotating body so as to surround the rotating body. A plurality of protrusions configured to abut against the support surface of the rotating body are arranged on one side of the mounting portion.

Abstract: A linear bearing that can be used in applications requiring high rigidity, such as guide posts of presses and molds is composed of a guide shaft, an outer cylinder capable of moving in the axial direction relatively to the guide shaft outside the guide shaft, numerous rolling elements interposed between the guide shaft and the outer cylinder, and a cage provided between the guide shaft and the outer cylinder for retaining said numerous rolling elements disposed in the circumferential direction and in the axial direction, characterized in that each of the rolling elements is a roller having a convex circular arc surface of revolution formed on the cylindrical surface thereof, that the inner surface of the outer cylinder is formed as a cylindrical surface, that the outer surface of the guide shaft is provided with axially extending guide grooves, each having a concave cylindrical surface, corresponding to the respective rows of rollers disposed in the axial direction, that the radius of the circle constituting

Abstract: The present invention relates to a linear bearing, particularly a linear bearing that can be used in applications requiring high rigidity, such as guide posts of presses and molds.

Abstract: A multi-degree-of-freedom table support unit U comprising a lengthwise and crosswise motion mechanism with two outer support plates integrally combined with an inner support plate sandwiched therebetween, and with bearings B installed between the inner support plate and outer support plates. A spherical bearing mechanism consisting of a spherical face 5 formed on a surface of the inner support plate having a spherical body 6 slidably engaged with the spherical face. A rod 8 is installed in an opening 7 formed in at least one of the outer support plates, with its tip connected with the spherical body; and a straight motion bearing mechanism for back-and-forth movement of the rod is provided. There is also provided a multi-degree-of-freedom table mechanism, in which support units with the above structure are used to support a stage 14 on a support frame 13, so that the stage 14 can be moved in X, Y and Z directions by driving the rods of the support units back and forth.

Abstract: There is provided a multi-degree-of-freedom positioning mechanism having a guide shaft and first and second moving members movably mounted on the guide shaft. Each drive is connected with the first and second moving members so as to allow the moving members to travel along the guide shaft. The machanism has a pair of foldably joined equally long links, which are pivotally rotatably engaged with the first and second moving members by first and second couplings. Furthermore, one edge of a table is pivotally rotatably engaged with the joint between the mating links of the foldably joined equally long links, to displaceably support the table.

Abstract: A flanged linear ball bearing is provided with a linearly translocatable flange which can be secured to a flange support. A gap is formed between the flange and the ball bearing proper and an intermediate member is adapted to fit in the gap so as to secure the flange to the outside of the bearing proper. The flange is adapted to be secured to a flange support which extends around the bearing proper.