Abstract: A screen in which observation distance may be adjusted while maintaining image brightness and a projection system using the screen. In a light control layer of a screen, a first angle region that determines a diffusion distribution of a reflected light is different according to the screen position in a control direction in which light diffusion control is performed. Accordingly, a diffusion distribution of image light emitted from a screen surface is adjusted to be tilted downward by an upper end and upward by a lower end according to the screen position. Thus, for example, a size of a diffused angle range is maintained to be 30°, and a direction in which the image light is diffusion-emitted corresponds to an assumed position of an observer. The projection image can be observed while maintaining brightness of an image and the observation distance can be adjusted to be short.

Abstract: An image forming apparatus includes a fusing unit with a heating member arranged to fuse toner to a printing paper, a heat source arranged to heat the heating member, a thermal sensor arranged to measure a surface temperature of the heating member, an electricity controlling unit arranged to control electricity supplied to the heat source based on a temperature measured by the thermal sensor, a first temperature controlling unit arranged to control the surface temperature of the heating member in STANDBY mode to gradually rise to an upper limit temperature by turning on/off electricity to the heat source with an electricity controlling unit, and a second temperature controlling unit arranged to control the surface temperature of the heating member in STANDBY mode to gradually fall to a lower limit temperature by turning on/off electricity to the heat source with the electricity controlling unit.

Abstract: A screen which reflects light emitted from a projector includes a light diffusion layer through which light incident from a specific angular region is diffused and transmitted and through which light incident from the other angular region is transmitted straight; area pairs having a mirror forming area and a non-mirror forming area; a light transmissive layer having a back surface, on which the area pairs are disposed, and an opposite surface being bonded to a back side of the light diffusion layer; and a specular reflection film formed on a back surface of each mirror forming area. An inclination of the mirror forming area with respect to a normal line of the screen close to the projector becomes larger than the inclination of the mirror forming area far from the projector within a cross section perpendicular to the mirror forming areas inside the screen.

Abstract: A fusing unit includes a heat roller and a press roller, which fuse a toner image fused to a recording sheet; a first separating pawl contacting a circumferential surface of the heat roller and separating the recording sheet from the heat roller; second separating pawls that are spaced from the first separating pawl in an axial direction to contact the circumferential surface of the heat roller and separate the recording sheet from the heat roller; a first rotatable guide in the first separating pawl that guides the recording sheet to a sheet discharge guide of an exit feed path while changing its orientation; a second rotatable guide provided in each of the second separating pawls which guides the recording sheet to a sheet discharge guide of an exit feed path while changing an orientation of the recording sheet; and a fusing feed path that reaches the sheet discharge guide.

Abstract: An image forming device includes a device main body, a drum unit, a stud which is fixed to a frame of the device main body, and a drum drive transmitting gear which is supported by the stud such that the drum drive transmitting gear can axially rotate. The drum unit includes a unit frame and a photoconductive drum which is supported on the unit frame such that the photoconductive drum can axially rotate. The photoconductive drum has a driven transmission gear at one end. When the drum unit is inserted into the device main body, the drum drive transmitting gear and the driven transmission gear are engaged with each other, and an end portion of the stud can be inserted into and received by an engaging hole of the unit frame of the drum unit.

Abstract: An image forming device includes a device main body, a drum unit, a stud which is fixed to a frame of the device main body, and a drum drive transmitting gear which is supported by the stud such that the drum drive transmitting gear can axially rotate. The drum unit includes a unit frame and a photoconductive drum which is supported on the unit frame such that the photoconductive drum can axially rotate. The photoconductive drum has a driven transmission gear at one end. When the drum unit is inserted into the device main body, the drum drive transmitting gear and the driven transmission gear are engaged with each other, and an end portion of the stud can be inserted into and received by an engaging hole of the unit frame of the drum unit.

Abstract: A carrier transporting apparatus comprises a thermostat for testing devices loaded on a carrier, and the carrier is carried out from the thermostat through an opening formed in the thermostat. A shutter is provided for opening and closing the opening, and a carrier guide is integrated with the shutter. As the shutter is opened for carrying out the carrier from the test section, the carrier guide is moved to a waiting position where the carrier guide does not obstruct the carrier. As the shutter is closed after the carrier is carried out, the carrier guide is moved to a guiding position where the carrier guide guides the carrier in a direction to cross the direction in which the carrier is carried out from the thermostat. Thereafter, the carrier guide guides the carrier so that the carrier is transported in the cross direction.

Abstract: A device carrier capable of reliably measuring electric characteristics of the device with accuracy and an auto-handle are provided. The device carrier holds an IC having terminals on a lower face thereof at multiple positions, and allows the terminals to be brought into contact with contacts provided on an IC socket, wherein the device carrier comprises an opening through which the device can pass, a support part disposed on the opening for supporting the lower face of the IC, and a hinge part for turnably supporting the support part, wherein said supporter part is turned to release the support of the device when the socket approaches thereto. The supporter part engages with the release pins as the device carrier approaches to the IC socket to be turned so as to release the support of the lower face of the IC. The IC which has been released from being supported by the supporter part passes through the opening and is placed on the IC socket.

Abstract: A device carrier capable of reliably measuring electric characteristics of the device with accuracy and an auto-handle are provided. The device carrier holds an IC having terminals on a lower face thereof at multiple positions, and allows the terminals to be brought into contact with contacts provided on an IC socket, wherein the device carrier comprises an opening through which the device can pass, a support part disposed on the opening for supporting the lower face of the IC, and a hinge part for turnably supporting the support part, wherein said supporter part is turned to release the support of the device when the socket approaches thereto. The supporter part engages with the release pins as the device carrier approaches to the IC socket to be turned so as to release the support of the lower face of the IC. The IC which has been released from being supported by the supporter part passes through the opening and is placed on the IC socket.

Abstract: In a horizontal conveyance type auto-handler, the operation of a carrier is stopped when a positional displacement of the carrier relative to a test board is detected. A shaft is provided on a center of a guide pin on the test board. When the carrier which is displaced relative to the test board is lowered, the shaft is pushed down by the carrier, and the lowering of the shaft is detected by an optical sensor, thereby stopping the lowering operation of the carrier.

Abstract: A carrier transporting apparatus comprises a thermostat for testing devices loaded on a carrier, and the carrier is carried out from the thermostat through an opening formed in the thermostat. A shutter is provided for opening and closing the opening, and a carrier guide is integrated with the shutter. As the shutter is opened for carrying out the carrier from the test section, the carrier guide is moved to a waiting position where the carrier guide does not obstruct the carrier. As the shutter is closed after the carrier is carried out, the carrier guide is moved to a guiding position where the carrier guide guides the carrier in a direction to cross the direction in which the carrier is carried out from the thermostat. Thereafter, the carrier guide guides the carrier so that the carrier is transported in the cross direction.

Abstract: A hand of an auto handler comprises a suction section composed of a suction nozzle and a suction pad, a compulsory separation ring and a coil spring. An electronic component is transferred to a given position by allowing the compulsory separation ring to bring into contact with the electronic component at the periphery thereof in a state where the electronic component is sucked by the suction pad. At the given position, air is discharged through the suction pad, while the compulsory separation ring is lowered at the same time, thereby pushing out the electronic component under the suction pad. With the construction, the electronic component can be transferred with assurance while it is less inclined when it is sucked by the suction section.

Abstract: A contact mechanism for connecting the leads of an IC package to an IC tester comprises a carrier block provided with an opening to receive therein an IC package provided with leads on its side surfaces, an IC connector connected to the IC tester, and a shifting mechanism for shifting the IC package received in the opening of the carrier block toward the IC connector after the carrier block has been joined to the IC connector, to bring the leads of the IC package into contact with the corresponding electrodes of the IC connector. The opening of the carrier block is tapered downward so that the leads of the IC package is guided by the inclined side surfaces of the opening as the IC package is pushed down toward the IC connector to position the leads of the IC package correctly relative to the corresponding electrodes of the IC connector.

Abstract: A parallel computer system includes a plurality of processor units, a data transfer network for interconnecting the processor units, a synchronizing network for allowing program execution to be performed synchronously by the individual processor units, a connecting unit for connecting the individual processor units and the synchronizing network, and an input unit connected to the synchronizing network. The connecting unit connects selectively the individual processor units to the synchronizing network in accordance with information inputted via the input unit. With the parallel computer system, a program can be executed synchronously in parallel by using a desired number of processor units of those incorporated in the system, whereby availability of processor resources of the system can be enhanced.

Abstract: There are disclosed a torque sensor having a rotary shaft and a thin strip of an amorphous magnetic alloy which has a great magnetic strain constant windingly fixed on the rotary shaft and detecting a torque in a non-contact style by a variation in magnetic properties of the thin strip of the amorphous alloy, characterized in that the amorphous alloy is an iron-based amorphous alloy having a crystallization temperature of 450.degree. C. or more, and a method for manufacturing the same, characterized in that an inductive magnetic anisotropy had been previously given to the thin strip and then the thin strip is windingly fixed on the rotary shaft.The torque sensor according to the present invention permits measuring a large torque with a good accuracy in an extensive temperature, and is manufactured with ease.

Abstract: An electrode for electrical discharge machining formed of a tungsten-based alloy including Ag and/or Cu, 15 to 40% by weight, and ZrO.sub.2, 0.5 to 10% by weight.