Abstract: A lubricating oil composition may have excellent long-term anti-foaming performance and detergency while blending a silicone-based anti-foaming agent. Such a lubricating oil composition may contain a base oil (A) and a silicone-based anti-foaming agent (B). A silicon atom content may be 50 ppb by mass to 4,000 ppb by mass, based on a total amount of the lubricating oil composition.

Abstract: Provided is a visual target display device or a visual target presentation method which can test the cone-specific visual function more accurately in a device that displays a visual target, of a chromatic color, for testing the color-related visual function of a subject or a method of presenting the visual target. A visual target of a chromatic color and a background around the visual target are presented in such a way that the brightness of the background is a numerical value between a numerical value 10% less than the brightness of the visual target and a numerical value 10% greater than the brightness of the visual target and a combination of the color of the visual target and the color of the background is a combination of colors which are in a relationship of confusion colors in dichromatism.

Abstract: The present invention relates to a lubricating oil composition containing: (A) a poly-?-olefin base oil obtained by using a metallocene catalyst; (B) a mineral oil-based base oil exhibiting a distillation curve with a temperature gradient ?|Dt| of distillation temperature between two points 2.0 vol % and 5.0 vol % of distillation amount being 6.8° C./vol % or less; and (C) an ester-based base oil in an amount of 6% by mass or more based on a total amount of the composition.

Abstract: The present invention relates to a lubricating oil composition containing: (A) a poly-?-olefin base oil obtained by using a metallocene catalyst; (B) a mineral oil-based base oil exhibiting a distillation curve with a temperature gradient ?|Dt| of distillation temperature between two points 2.0 vol % and 5.0 vol % of distillation amount being 6.8° C./vol % or less; and (C) an ester-based base oil in an amount of 6% by mass or more based on a total amount of the composition.

Abstract: Provided are: a lubricating oil composition that contains a base oil (A) containing an alkylnaphthalene (A1) and an ester compound (A2), wherein the content ratio of the component (A1) to the component (A2) [(A1)/(A2)] is 15/85 to 85/15 as a ratio by mass, and a tenter device using the lubricating oil composition. The lubricating oil composition has a small evaporation loss, has a suppressed amount of evaporation, maintains good fluidity and hardly causes adherence of residue even in long-term use in high-temperature environments.

Abstract: What is provided is an aluminum alloy substrate for a magnetic recording medium which has high rigidity and an excellent plating properties. The aluminum alloy substrate for a magnetic recording medium has a constitution in which coarse grains whose average grain size is within a range that exceeds 2 ?m and is less than or equal to 20 ?m are dispersed, the average number of coarse grains per area of 0.042 mm2 is 100 or more, and a surface roughness Ra is less than or equal to 0.2 ?m.

Abstract: The present invention provides a substrate for a magnetic recording medium in which bulges are not easily formed on a surface thereof by a physical impact in a size for a 2.5-inch type hard disk drive, and a width of displacement caused by fluttering is small. The substrate for a magnetic recording medium includes an Al alloy substrate and a Ni alloy plating film formed on a surface of the Al alloy substrate, has a diameter of 54 to 70 mm, and a disk shape having a hole whose inner diameter ranges from 19 to 26 mm in the center thereof. The Al alloy substrate has a Young's modulus (E) of 74 GPa or more, a density (?) of 2.75 g/cm3 or less, and a ratio (E/?) of 27 or more between the Young's modulus (E) and the density (?). The Ni alloy plating film has a thickness of 4 to 7 ?m, and when an indentation is formed by pressing a diamond indentor whose tip has a square pyramid shape against a surface of the Ni alloy plating film with a test force of 0.

Abstract: The present invention provides a substrate for a magnetic recording medium in which bulges are hardly formed on a surface thereof by a physical impact in a size for a 3.5-inch type HDD, and a width of displacement caused by fluttering is small. The substrate for a magnetic recording medium includes an Al alloy substrate and a Ni alloy plating film formed on a surface of the Al alloy substrate, and has a diameter of 95 to 98 mm, a disk shape having a hole whose inner diameter ranges from 19 to 26 mm in the center thereof, a thickness of 0.48 to 0.64 mm, and a mass of 9.0 to 15.0 g. The Al alloy substrate has a Young's modulus (E) of 74 GPa or more, a density (?) of 2.75 g/cm3 or less, and a ratio (E/?) of 27 or more between the Young's modulus (E) and the density (?). The Ni alloy plating film has a thickness of 4 to 7 ?m, and when an indentation is formed by pressing a diamond indentor whose tip has a square pyramid shape against a surfaces of the Ni alloy plating film with a test force of 0.

Abstract: A reclining device for vehicle seat, which is of such a structure wherein a main shaft is provided between a movable arm plate fixed to a seat back of the seat and a base plate fixed to a seat cushion fixed to a seat cushion of the seat, wherein a first lock gear element is defined in one of the arm and base plates, while a second lock gear element is slidably mounted on the main shaft for meshed engagement with or disengagement from the first lock gear element, and wherein an interlocking element is disposed along the main shaft between the arm and base plates, so as to permit such engagement and disengagement between the first and second lock gear elements to be effected by rotational operation of a lever. This makes the reclining device small in size and weight. The two gear elements may be formed generally annular for full meshed engagement therebetween, thereby making them rigid against deformation.

Abstract: An automotive seat is disclosed which comprises a vertically movable seat cushion and a fixed seat back and which is capable of closing a spacing produced between the seat cushion and seat back when the seat cushion is lowered. In the automotive seat, an expandable and contractible resilient member is disposed in the portion of the seat cushion to which the lower end of the seat back faces and the resiliency of the resilient member is utilized to close the spacing between the seat cushion and seat back.

Abstract: A passive restraint for a vehicle seat comprising a seat belt is disclosed which is designed so as to secure the security of an occupant. In this passive restraint, since a retractor is mounted in the inside front portion of one of side frame sections of a cushion frame and a belt guide is installed in the outside rear portion of the same one side frame section, an input from the seat belt will be little applied to the intermediate portion of the cushion frame, and points of the input is located adjacent to the front and rear points of installation of a slide rail. As a result of this, loads of the seat belt are distributed directly over the side of the slide rail, which offers an advantage to the cushion frame from the standpoint of strength.

Abstract: An arm rest device is disclosed in which a base plate, supported onto a bracket in a seat-back by means of link mechanisms, is mounted to an arm rest body in such a manner to be free to slide fore and aft and is also connected with a connecting pin of the arm rest body by means of a spring. If the arm rest body is pushed against the elastic forces of the spring, then such connection is removed and thus the arm rest body is free to move. Then, if the pressure is released, the connecting pin is caused to engage with a predetermined tooth groove in the base plate so that the angle of the arm rest body is adjusted. Thus, the inclining angle of the arm rest body can be adjusted by pushing it directly, which eliminates the provision for any knob, handle or the like.Further, the arm rest body can be adjusted such that it always maintains its horizontal position even when the seat-back is inclined.