摘要:
Arranged in the bottom of a cup-shaped cylindrical casing is a solid disc form of axially uniformly magnetized permanent magnet having a single pair of poles each formed on one or the other of its opposite end faces over the whole region thereof. A circular plate of magnetically permeable material is fixedly mounted on the magnet and to which plate a set of coiled posts are fixedly fitted. The casing is preferably formed on its outer periphery with cooling fins for dissipation of heat generated therein during printing operation. The magnet and the plate thereon, identical in outer diameter, are radially spaced an appropriate slight distance from the inner wall surface of the casing to form a bypass circuit for the flux of the magnet. Arranged in the open top of the casing is a spring-charge type print hammer assembly which includes a radial array of resilient tongues (hammers) and print wires secured thereto preferably through the medium of flat armature plates fixed to the respective tongues. The print head is particularly suited for high-speed printing operation with low power requirements and, owing primarily to the extremely simplified form of magnet used, is of reduced fabrication cost. The armature plates, in cooperation with a yoke plate slotted to receive the plates serve to compensate for any possible increase in reluctance of the main magnetic circuit and increase the kinetic energy of the tongues or print hammers when released.
摘要:
Disclosed is a thermoplastic resin composition having excellent impact resistance at a low temperature, while maintaining high transparency; this thermoplastic resin composition is obtained by compounding an impact resistance improver into a thermoplastic resin, the impact resistance improver being composed of a graft copolymer which is obtained by polymerizing a vinyl monomer component in the presence of a polymer mixture containing a polymer having butadiene units as an essential component and a polymer having styrene units as an essential component, the polymer mixture containing 45 to 65% by mass of the butadiene units and 35 to 55% by mass of the styrene units.
摘要:
An objective lens driving apparatus includes an objective lens (13) collecting a light flux emitted from a light source on a optical disk (11), and a lens holder (14) holding the objective lens (13). The lens holder (14) includes a first bonding portion (14i) and a second bonding portion (14j) for holding the objective lens (13) by means of bonding. The objective lens (13) is fixed to the lens holder (14) by applying a first bonding adhesive (25) to the first bonding portion (14i) to thereby bond the objective lens (13) thereto, adjusting an inclination of an optical axis of the objective lens (13) while causing the first bonding adhesive (25) to deform, and applying a second bonding adhesive (26) to the second bonding portion (14j). The second bonding adhesive (26) has a larger Young's modulus after curing than the first bonding adhesive (25).
摘要:
The present invention provides 2-furancarboxylic acid hydrazide compounds represented by General Formula (I) below, and prodrugs, physiologically acceptable salts, hydrates, solvates thereof: wherein A is a group represented by Formula (a) or the like: (wherein either R4 or R5 represents cyano, nitro or the like, and the other represents a hydrogen atom or the like); either R1 or R2 represents a group: -D-(X)m-R6 or the like, and the other represents a group: -E-(Y)n-R7, hydrogen atom, aryl or the like; R3 is a hydrogen atom or the like; D and E independently represent aryl; X and Y independently represent O or the like; R6 and R7 independently represent alkyl, aryl, arylalkyl or the like; and m and n are independently 0 or 1, provided that the aryl is optionally substituted.
摘要:
The object of the present invention is to use the same FIFO line memory for both enlargement and reduction during variable-magnification processing in the scan direction, allowing reduction in circuit board area, reduction in power consumption, and reduction in cost, and to provide an image processing apparatus that allows variable-magnification processing to be carried out such that the speed of a scanning unit that captures image data during variable-magnification processing in the cross-scan direction is constant. During processing to enlarge an image in the scan direction, image data travels from CCD circuit board, passing through gate b of selector, is written to and read from FIFO memory, and from gate b of selector is written to memory provided at variable magnification unit. At variable magnification unit, image data is read from memory a plurality of times in correspondence to enlargement ratio, changing the magnification of the image data. Furthermore, image data is output through gate a of selector to LSU unit. During processing to reduce an image, image data travels from CCD circuit board, passing through gate a of selector, is input to variable magnification unit where it is subjected to variable-magnification processing, passes through gate a of selector, is written to and read from FIFO memory, passes through gate b of selector, and is output to LSU unit.
摘要:
The present invention provides a thermoplastic resin composition capable of demonstrating impact strength, and high resistance to hydrolysis and heat discoloration without impairing the essential properties of the thermoplastic resin. The present invention provides a thermoplastic resin composition containing: 70 to 99% by mass of thermoplastic resin (A) containing a polycarbonate resin as an essential component; and 1 to 30% by mass of graft copolymer (B) which is a graft copolymer obtained by emulsion graft polymerization of a monomer or monomer mixture containing at least alkyl methacrylate in the presence of a latex containing a butadiene rubber polymer, wherein the amount of the butadiene rubber polymer included is in the range of 55 to 90% by mass, and the graft copolymer (B) is obtained by using 0.05 to 10 parts by mass of sodium alkylphenylether disulfonate with respect to 100 parts by mass of the graft copolymer (B).
摘要:
An objective lens driving apparatus is used for accurately positioning an abject to focus a light spot on an optical recording medium. A lens holder holds the objective lens and has a bearing hole through which a shaft extends in a direction parallel to the optical axis so that the lens holder is rotatably supported on the shaft. Two magnets are supported on the lens holder so that the shaft is between the magnets. A base has two magnetic members disposed such that each of the two magnets exerts an attraction force on a corresponding one of the two magnetic members to urge the lens holder in a direction of the optical axis and in a direction perpendicular to the optical axis. A first coil set of first focusing and tracking coils and a second coil set of focusing and tracking coils are mounted to the two magnetic members.
摘要:
An impact strength modifier comprises an acrylic rubber graft copolymer (I) obtained by graft-polymerizing a polyalkyl (meth)acrylate composite rubber (A) with a vinyl monomer (B), and a compound (II) which has a sulfonic acid group or a sulfuric acid group and also has two or more benzene ring skeletons, or a salt thereof. The polyalkyl (meth)acrylate composite rubber (A) contains two or more acrylic rubber components each having a different glass transition temperature, and the respective acrylic rubber components have 20% by weight or less of a monomer having two or more unsaturated bonds in a molecule. The compound (II) preferably has two or more benzene ring skeletons, and a particle size distribution of the polyalkyl (meth)acrylate composite rubber (A) is preferably a polydisperse distribution in which two or more peaks exist within a specific range. When using the impact strength modifier of the present invention, the impact resistance, particularly low-temperature impact resistance of the resin can be improved in a small amount and weatherability such as fading resistance or impact resistance of the resulting molded article can be satisfactorily maintained.
摘要:
An objective lens driving apparatus is used for accurately positioning an abject to focus a light spot on an optical recording medium. A lens holder holds the objective lens and has a bearing hole through which a shaft extends in a direction parallel to the optical axis so that the lens holder is rotatably supported on the shaft. Two magnets are supported on the lens holder so that the shaft is between the magnets. A base has two magnetic members disposed such that each of the two magnets exerts an attraction force on a corresponding one of the two magnetic members to urge the lens holder in a direction of the optical axis and in a direction perpendicular to the optical axis. A first coil set of first focusing and tracking coils and a second coil set of focusing and tracking coils are mounted to the two magnetic members.
摘要:
An optical wavelength tunable filter includes an optical waveguide having a first branched optical waveguide and a second branched optical waveguide merging into one piece of the optical waveguide through which optical wavelength multiplexed signals, each having a different wavelength component being incident from an end face of the first branched optical waveguide, are propagated. A comb-type electrode (or a plurality of comb-type electrodes each corresponding to each of the different wavelength-components) is mounted vertically to apropagating direction of the optical wavelength multiplexed signals leaving a specified space apart from the optical waveguide formed by a merger of the branched first branched optical waveguide with the second branched optical waveguide. A voltage applying device applies a predetermined voltage to each of the comb-type electrodes.