Abstract: A hollow frame member is constituted by joining with a truss shape by ribs 13, 13A, 13B (23, 23A, 23B) between two face plates 11, 12 (21, 22). An end portion of one of the hollow frame member 10 is connected according to the rib 13A for constituting the truss. A face plate 21 of another hollow frame member 20 is joined at a vicinity of an apex of the truss of the hollow frame member 10. A face plate of the hollow frame member 10 is joined at a vicinity of an apex of the truss of the another hollow frame member 20. A load during a friction stir joining is received according to the ribs 13A, 13B (13A, 23B). Since the truss structure is formed totally, the light weight structure and the high rigidity performance can be obtained.

Abstract: A heat transfer sheet in which a recorded image having excellent stability in storage and manifesting little variation in sensitivity and resolution can be obtained by adding an additive to a light-heat-conversion layer.

Abstract: A thermal transfer material which has at least a light to heat converting layer and an image forming layer on a supporting body, and the image forming layer containing at least one compound which is selected from the compounds which are represented in the following general formula (1) and the following general formula (2). In the general formula (1), R1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a halogen atom, or an alkoxy group having 1 to 5 carbon atoms; and R2 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms. n represents any integer of 1 to 4. In the general formula (2), R3 and R4 represent respectively independently a nitro group, a halogen atom, a methylsulfonyl group, or a cyano group.

Abstract: A field effect transistor having a high breakdown withstand capacity is provided. An active region 7a is surrounded by a fixed potential diffusion layer 16, and a channel region 15 is formed in the active region 7a. A gate pad 35 is provided outside the fixed potential diffusion layer 16. Minority carriers injected at a peripheral region of the active region 7a flow into the fixed potential diffusion layer 16, which prevents breakdown attributable to concentration of the carriers. The fixed potential diffusion layer 16 is surrounded by a plurality of guard ring diffusion layers 171 through 174, and a pad diffusion layer 18 formed in a position under the gate pad 35 is connected to the innermost guard ring diffusion layer 171. Since this encourages expansion of a depletion layer under the gate pad 35, an increased breakdown voltage is provided.

Abstract: A refrigerator, having a motor for driving a compressor, an inverter for controlling the operation of the motor, a converter responsive to AC to perform a boosting function to supply DC of variable voltage to the inverter, converter control means for controlling the converter so that a plurality of DC voltages are outputted thereby and inverter control means for controlling the inverter in pulse width modulation each of the plurality of voltages. The lowest voltage among the plurality of voltages being a voltage which turns off the boosting function of the converter.

Abstract: A field effect transistor with a high withstand voltage and a low resistance is provided. A ring-shaped channel region is disposed inside a source region formed in a ring, and the inside of the channel region is taken as a drain region. A depletion layer extends toward the inside of the drain region, resulting in a high withstand voltage. In the portion, except the portion within a prescribed distance from the corner portion of the channel region, a low resistance conductive layer is disposed, thereby resulting in high withstand voltage.

Abstract: A refrigerator, having a motor for driving a compressor, an inverter for controlling the operation of the motor, a converter responsive to AC to perform a boosting function to supply DC of variable voltage to the inverter, converter control means for controlling the converter so that a plurality of DC voltages are outputted thereby and inverter control means for controlling the inverter in pulse width modulation each of the plurality of voltages. The lowest voltage among the plurality of voltages being a voltage which turns off the boosting function of the converter.

Abstract: A semiconductor module is mounted on a printed circuit board so that a heat radiating surface of the module and surfaces of the printed circuit boards are parallel to inner wall surfaces of a unit case. The total thickness of the semiconductor module constituting an inverter essential to a servo amplifier, and the printed circuit boards on which the semiconductor module is mounted is made substantially equal to a distance between the inner walls of the unit case so that the width of the servo amplifier can be minimized. The other components having sizes smaller than the width of the unit case are selected, and an electrolytic capacitor and the like are divided into a plurality of parts so that the divided parts are separately accommodated.

Abstract: An abutted portion of face plates 12b and 22b of hollow frame members 10 and 20 is carried out according to a friction stir joining. Next, a connection member 30 is mounted, one end of the connection member 30 is abutted to an end portion of the face plate 11 of the hollow frame member 10. Under this condition, the abutted portion between the face plate 11 and the connection member 30 is carried out according to the friction stir joining. An overlapping portion between another end of the connection member 30 and the hollow frame member 20 is carried out according to the friction stir joining. According to demands, the connection member 30 and the face plate 21 of the hollow member 20 is welded. Without of regard of a dimension accuracy of the hollow frame member and the like, a good joining from one side face of the hollow frame member can be carried out.

Abstract: An abutted portion of face plates 11b and 22b of hollow frame members 10 and 20 is carried out according to a friction stir joining. Next, a connection member 30 is mounted, one end of the connection member 30 is abutted to an end portion of the face plate 11 of the hollow frame member 10. Under this condition, the abutted portion between the face plate 11 and the connection member 30 is carried out according to the friction stir joining. An overlapping portion between another end of the connection member 30 and the hollow frame member 20 is carried out according to the friction stir joining. According to demands, the connection member 30 and the face plate 21 of the hollow member 20 is welded. Without of regard of a dimension accuracy of the hollow frame member and the like, a good joining from one side face of the hollow frame member can be carried out.

Abstract: An abutted portion of face plates 12b and 22b of hollow frame members 10 and 20 is carried out according to a friction stir joining. Next, a connection member 30 is mounted, one end of the connection member 30 is abutted to an end portion of the face plate 11 of the hollow frame member 10. Under this condition, the abutted portion between the face plate 11 and the connection member 30 is carried out according to the friction stir joining. An overlapping portion between another end of the connection member 30 and the hollow frame member 20 is carried out according to the friction stir joining. According to demands, the connection member 30 and the face plate 21 of the hollow member 20 is welded. Without of regard of a dimension accuracy of the hollow frame member and the like, a good joining from one side face of the hollow frame member can be carried out.

Abstract: When inverter control is implemented in a refrigerator or the like, the rotating speed of a compressor motor is often operated at the preset minimum rotating speed. At this time, there has been a problem that when the DC voltage is boosted, the efficiency of the circuit drops due to switching loss in the power element. Still more, when the DC voltage is boosted even at the minimum rotating speed, the lowest voltage of the DC voltage must be controlled at 163 V or more including the fluctuation of the voltage. Therefore, there has been a problem in that the efficiency of the compressor motor also drops.

Abstract: The present invention provides a thermal transfer sheet comprising a substrate, and a light-to-heat conversion layer containing a substance capable of converting light to heat and a binder, and an image forming layer, which are disposed on the substrate, wherein the binder in the light-to-heat conversion layer is a polyimide resin soluble in an organic solvent. In the thermal transfer sheet provided by the present invention, the light-to-heat conversion layer is not affected by the coating liquid disposed as a layer on the light-to-heat conversion layer. Further, the light-to-heat conversion layer thus formed exhibits high heat resistance and humidity resistance. Accordingly, the thermal transfer sheet of the present invention produces good images with little or no fogging.

Abstract: An image forming kit is composed of one or more ink sheets and an image receiving sheet. The ink sheet is composed of a support sheet and an ink layer of 0.2-1.0 .mu.m thick composed of 30 to 70 weight parts of a particulate pigment and 25 to 60 weight parts of an amorphous polymer having a softening point of 40.degree.-50.degree. C. The image-receiving sheet is composed of a support sheet, an intermediate layer and an image-receiving layer. The intermediate layer is composed of a polymer and a fluorine atom-containing anionic surfactant.

Abstract: A method for thermal transfer recording of a multicolor image which utilizes a heat sensitive ink sheet having a support sheet and a transparent heat sensitive ink layer having a thickness of 0.2 to 1.0 .mu.m which is formed of a heat sensitive ink material comprising 30 to 70 weight parts of a colored pigment at least 70 weight % of which has a particle size of not more than 1.0 .mu.m and 25 to 60 weight parts of amorphous organic polymer having a softening point of 40.degree. to 150.degree. C.

Abstract: Disclosed is image receiving sheet having a support sheet, a first image receiving layer thereon and a second image receiving layer provided on the first image receiving layer; wherein the second image receiving layer comprises butyral resin and polymer having at least one of recurring units represented by the following formula: ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group; and Q represents a group having amide bond, a nitrogen-containing heterocyclic group, or a phenyl group substituted with residue of ammonium salt. Further, a thermal transfer recording methods by area gradation using a heat sensitive ink sheet and the image receiving sheet are also disclosed.

Abstract: An image-receiving sheet material for forming a transfer image by heat-transferring an ink layer from a transfer material having a heat-transferable ink layer onto an image-receiving sheet material, and re-transferring the ink layer onto a permanent support. The image-receiving sheet material comprises a support having thereon at least two image-receiving layers, at least one of the image-receiving layers is transferred onto the permanent support, and at least the image-receiving layer onto which the ink layer is transferred contains a modified resin prepared from a polyvinyl acetal resin containing hydroxyl groups in which from 0.1 to 1 equivalent of the hydroxyl groups of the polyvinyl acetal resin have been converted to a group represented by formula (I). In a preferred embodiment, the image-receiving layer onto which the ink layer is transferred further contains a high molecular weight compound having at least a repeating unit represented by formula (II) and/or formula (III).

Abstract: A photocoupler includes: a first chip formed with a light emitting element emitting light in response to an input current; and a second chip formed with a light receiving element outputting a current having a magnitude in association with the intensity of the light from the light emitting element, a capacitor formed of a PN-junction for storing charges from the output current from the light receiving element, and a Darlington circuit having the capacitor interposed between the base and emitter thereof, The first and second chips are sealed to form a single photocoupler which is capable of solely effecting phase control.

Abstract: An image forming method comprises the steps of applying a laser light imagewise and sequentially onto a laminate for image formation and separating the image receiving sheet from other materials of the laminate so as to keep on the image receiving sheet an imagewise transferred image formation layer comprising the thermoplastic resin and pigment.

Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.