摘要:
A cutting device for an electric shaver comprising an outer cutter and a plurality inner blades that are made of a ferrous alloy comprising a substrate of an Fe-Cr stainless steel and a hardened layer of improved hardness and wear resistance. The substrate has a Vickers hardness of 400 or more. The hardened layer has a Vickers hardness of at least 700 and a thickness of 2 to 15 .mu.m. In particular, it is preferred that the hardened layer is a diffusion layer comprising at least 90 vol % of intermetallic compounds of Al and Fe relative to a total volume of the diffusion layer, and Al content included within a depth of at least 2 .mu.m of the diffusion layer is 35 to 65% by weight based upon total weight of a region of the diffusion layer ranging up to the thickness of at least 2 .mu.m. When the ferrous alloy is polished to form the outer cutter and inner blades, it is possible to provide sharp cutting edges of the outer cutter and inner blades, while preventing the occurrence of burrs or micro-chippings at the cutting edges.
摘要:
An intermetallic-compound coated stainless steel having excellent rigidity, toughness, wear resistance and corrosion resistance comprises a substrate of a martensite stainless steel having a Vickers hardness of 400 or more, and a hard film having a bottom surface adhered to the substrate and an exposed top surface. The hard film has an outermost layer made of a compound selected from the group consisting of a Ti—Ni intermetallic compound, Ti—Fe intermetallic compound, and a mixture of the Ti—Ni intermetallic compound and a Ti—Cu intermetallic compound. The coated stainless steel can be produced by cladding an outer sheet made of Ti or a Ti alloy to a martensite stainless steel sheet directly or through an intermediate sheet made of Ni, Fe or a Ni—Cu alloy, heating the laminate at a temperature of 900° C. to 1150° C. for 30 seconds to 5 minutes, and then cooling the heated laminate at a cooling rate of 1° C./sec or more.
摘要:
A razor blade is provided, which achieves improved safety in use and reduced cutting resistance to an object to be cut such as beard and hair, as compared with conventional razor blades. This razor blade can be obtained by using, as a silicon thin sheet, a single crystal silicon material such as Si wafer or a polycrystalline silicon material including relatively large silicon crystal grains, forming at least one opening in the silicon thin sheet by chemical etching, and forming a cutting edge made of silicon single crystal by ion beam etching without machining such that the cutting edge projects into the opening and has a nose radius of 0.5 μm or less, and preferably 0.1 μm or less.
摘要:
An inner cutter for a dry shaver is fabricated from a metal plate to have a plurality of blades each provided with cutting edges. The metal plate includes a plurality of parallel straight slits to leave an array of straight beams each defined between the adjacent ones of the slits. The beams are forged and ground at a segment of each beam to give the cutting edges thereto. After making the cutting edges, the metal plate is bent into a generally U-shaped configuration so as to correspondingly curve the beams and shape the beams into the blades having the arcuate contour and the cutting edges. The metal plate is provided with a joint for connection with a driving source of moving the inner cutter relative to an outer cutter.
摘要:
The present invention provides a hybrid vehicle driving system which can implement sufficient lubrication while a vehicle is being driven. A hybrid vehicle driving system 1 of the invention includes a lubrication pump 122 which is connected to a first input shaft 11 and which is adapted to lubricate a transmission 20 and a lubricated state determination unit 55 which determines a lubricated state of the transmission 20. When the lubricated state determination unit 55 determines that lubrication is necessary, the first input shaft 11 is rotated by an electric motor 7 so as to drive the lubrication pump 122, or the first input shaft 11 is rotated by an internal combustion engine 6 by engaging a first engaging and disengaging unit to thereby drive the lubrication pump 122.
摘要:
An image recording material which has a support and an image recording layer containing a crystalline polymer and an amorphous polymer on at least one surface of the support, wherein the image recording layer has a storage elastic modulus G′ at 100° C. of 1×102 Pa to 1×105 Pa during a temperature increase at 5° C./min, a storage elastic modulus G′ at 60° C. of 1×106 Pa or more during a temperature decrease at 5° C./min and a temperature difference of 18° C. or less between a temperature at which the storage elastic modulus G′ during a temperature increase at 5° C./min reaches 1×105 Pa and a temperature at which the storage elastic modules G′ during a temperature decrease at 5° C./min reaches 1×105 Pa, upon measurement of viscoelasticity by using a rheometer of plate-to-plate distance: 1.5 mm, diameter: 20 mm.
摘要:
The present invention provides an electrophotographic image receiving sheet including a support, and at least two toner image receiving layers formed over at least one surface of the support, wherein a mixture mass ratio M of a crystalline polymer and an amorphous polymer in each of the toner image receiving layers is defined as [A/(A+B)], where A represents a mass of the crystalline polymer (g), and B represents a mass of the amorphous polymer (g), and a mixture mass ratio M1 of the outermost toner image receiving layer which is located farthest from the support, and a mixture mass ratio M2 of the highest inner toner image receiving layer, which has the highest mixture mass ratio among the inner toner image receiving layers located under the outermost toner image receiving layer, satisfy the relation: M1
摘要:
The present invention provides a support for image recording material etc. that can record high-quality images far from occurrences of blister, uneven recording or uneven fixing.In order to attain the object, a support for image recording material is provided that comprises a raw paper, and at least one polyolefin resin layer on both sides of the raw paper, wherein two or more polyolefin resin layers are disposed at the front side where an image recording layer is to be disposed, polypropylene resin is included within at least one polyolefin resin layer at the front side other than the outermost polyolefin resin layer at the front side, and the content A (% by mass) of polypropylene resin within the at least one polyolefin resin layer at the front side other than the outermost polyolefin resin layer is higher than the content B (% by mass) of polypropylene resin within the outermost polyolefin resin layer at the front side. Preferably, the support for image recording material is used for recording an image by way of at least one of recording by heating, development by heating, and fixing by heating.
摘要:
A hard disk drive includes a base having a bottom plate. A magnetic body is embedded in the bottom plate. The magnetic body is allowed to serve as a magnetic shield in the hard disk drive. The magnetic body is allowed to have a sufficient thickness without requiring an additional space outside the base, since the magnetic body is embedded in the base. The magnetic field directed outside the base can reliably be absorbed at the magnetic body. The magnetic body may be received in a depression defined in the bottom plate. The depression may be formed based on a reduction in the thickness of the bottom plate.
摘要:
A magnetic disk device comprises a magnetic disk in which a data zone is formed. An actuator has a voice coil and a head slider carrying a magnetic head, the actuator being swung to move the magnetic head over the disk between an innermost position of the data zone and an outermost position of the data zone. A magnet has a magnetization center and is opposed to the voice coil so that a voice coil motor which swings the actuator is formed, the magnet having a north pole and a south pole confronting each other via the magnetization center. The magnetic disk device is provided so that a deviation of a center of the voice coil from the magnetization center when the magnetic head is in the innermost position of the data zone is substantially equal to a deviation of the center of the voice coil from the magnetization center when the magnetic head is in the outermost position of the data zone.