摘要:
An adhesive composition which is the crosslinked product of components which comprise (C) a copolymer of a (meth)acrylic ester having a weight-average molecular weight of 1,000,000 or greater, (D) 5 to 100 parts by weight per 100 parts by weight of component (C) of an oligomer of (meth)acrylic esters having a weight-average molecular weight of 1,000 to 10,000 and (E) 0.001 to 50 parts by weight per 100 parts by weight of component (C) of a crosslinking component comprising a difunctional crosslinking agent. The adhesive composition exhibits excellent adhesion with adherents, and stress relaxation and follows changes in the dimensions of substrates.
摘要:
An outer column (21) is held between a tension member (13) and brackets (12) by operating a lever (L), thereby making it possible to block displacements of fixing members (16, 17) along tilt grooves (12a). An inner column (11) is held to the brackets (12) through the outer column (21), whereby the displacements of the fixing members (16, 17) along telescopic grooves (11a) can be blocked. A steering shaft (S) can be thereby fixed in a tilting direction and a telescoping direction. The brackets (12) apply a pressing force to the inner column (11) through flange portions (21c, 21d) of the outer column (21) by operating the lever (L), and the inner column (11) receives the pressing force in a direction opposite to a direction in which the tension member (13) approaches. As rigidities of the pair of brackets (12) are approximately equal, a central position of the inner column (11) can be therefore kept substantially fixed. Hence, an axis deviation of the steering shaft (S) can be effectively restrained.
摘要:
A magnetic recording medium including a substrate, a first seed layer provided on the substrate, a second seed layer provided on the first seed layer and formed of the same material as that of the first seed layer, and a plurality of crystal layers provided on the second seed layer and including a magnetic recording layer. A normal to a crystal lattice plane preferentially oriented in a given direction in each grain composing one of the first and second seed layers is inclined from a normal to the upper surface of the substrate.
摘要:
A tilt adjusting type steering apparatus comprises a rear steering shaft, a front steering shaft, a universal joint coupling the rear steering shaft and the front steering shaft, a front support member, a rear support member, and an operation mechanism including a fixed gear secured to the front support member and a movable gear supported to be rotatable by the rear support member. The operation mechanism causes the movable gear to be meshed with the fixed gear to secure the rear support member at a tilt adjusted position and releases the movable gear from the fixed gear at the time of tilt adjusting. The fixed gear is integrally formed with a convex part, and the front support member is formed with a concave part. These parts are fitted to each other to secure the fixed gear to the front support member.
摘要:
The radiation detector according to this invention has a common electrode for bias voltage application formed on a surface of an amorphous selenium semiconductor film (a-Se semiconductor film) sensitive to radiation. The common electrode is a gold thin film having a thickness in a range of 100 to 1,000 Å. The gold thin film acting as the common electrode may be formed on the surface of the a-Se semiconductor film at a relatively low vapor deposition temperature and in a reduced vapor deposition time. This feature suppresses a generation of defects in the a-Se semiconductor film due to formation of the common electrode. The gold thin film for the common electrode is not so thick as in the prior art, but is 1,000 Å or less. With the reduced thickness, the common electrode has improved boding property with respect to the a-Se semiconductor film.
摘要:
A radiation detector of this invention has an electrically insulating buffer seat disposed on a front surface of a radiation sensitive semiconductor, in a position outside a radiation detection effective area. A common electrode for bias voltage application is formed to cover the buffer seat. A lead wire for bias voltage supply is connected to a lead wire connection area, located on the buffer seat, of the surface of the common electrode. The buffer seat reduces a shock occurring when the lead wire is connected to the common electrode. As a result, the semiconductor and an intermediate layer are protected from damage which would lead to a lowering of performance. The buffer seat is disposed outside the radiation detection effective area. Thus, the buffer seat is provided without impairing the radiation detecting function.
摘要:
An adhesive composition comprising a crosslinked product of (A) a copolymer of (meth)acrylic esters and (B) a crosslinking agent, and (C) a phenol derivative. An adhesive composition comprising a crosslinked product of (D) a copolymer of (meth)acrylic esters having a weight-average molecular weight of 500,000 to 2,500,000 or (D′) a mixture of the copolymer (D) and an oligomer of (meth)acrylic esters having a weight-average molecular weight of 1,000 to 10,000 in a ratio of amounts of 100:5 to 100:100 by weight and (E) a crosslinking agent, and (F) a radical scavenger. An adhesive optical component comprising a layer of the adhesive composition disposed on at least one face of an optical component. The adhesive composition serves to suppress degradation of easily hydrolyzable materials by hydrolysis, improve durability and provide excellent stress relaxation without plasticizers.
摘要:
A magnetic recording medium which has higher S/N and lower manufacturing cost includes a first underlayer including at least one of Co or Cu and P on a non-magnetic substrate, a second underlayer consisting of a non-magnetic material using Cr, and a magnetic layer on the second underlayer.
摘要:
Activated carbon for an electrode of an electric double-layer capacitor is produced by subjecting a carbon material sequentially to a carbonizing treatment and an alkali activating treatment, and by using a carbon material. The carbon material used is a condensed polycyclic aromatic compound (CPAC) which has a condensed ring (CR) and at least one aliphatic hydrocarbon radical (R) bonded to said condensed ring (CR). The condensed ring (CR) includes at least one alicyclic hydrocarbon structure moiety (ALC). In an analysis chart resulting from a 13C-NMR spectroscopy of the condensed polycyclic aromatic compound, a signal intensity ratio IL/IR is equal to or larger than 0.2, and a signal intensity ratio IC/IR is equal to or larger than 0.14, wherein IR represents a signal intensity of an aromatic peak; IL represents a signal intensity of an aliphatic hydrocarbon peak; and IC represents a signal intensity of an alicyclic hydrocarbon peak. Thus, activated carbon of a low electrostatic capacity revealing voltage and a high electrostatic capacity density (F/cc) can be produced by using a particular carbon material.
摘要:
A magnetic recording medium has a nonmagnetic substrate having applied thereon through a nonmagnetic underlayer a magnetic recording layer composed of a magnetic metal material. The nonmagnetic substrate has a smooth surface with an average surface roughness Ra of not more than 20 Å, a recesses-and protrusions-forming layer having stripe-like protrusions and recesses in the circumferential direction, formed on the substrate. A CrP or CrMoP reinforcing coat layer having a hardness higher than that of the recesses-and protrusions-forming layer is sandwiched between the substrate and the recesses-and-protrusions-forming layer.