Abstract: The tape drive unit of the present invention is constructed such that the reverse rotation of a motor (16) causes a mode cam (32) to drive for setting any mode of normal play, reverse play, fast forward and rewinding, and thereafter the forward rotation of the motor (16) causes a reel shaft (3) or a reel shaft (4) to rotationally drive according to said mode and a head base (51) is slid upon FWD/REV to set up a magnetic head and pinch rollers. With such construction, each operation of normal play, reverse play, fast forward and rewinding can be performed without using a plunger or microcomputer, thereby eliminating the fear of troubles due to the plunger malfunction or a microcomputer bug.

Abstract: A recording and/or reproducing apparatus which includes no pinch roller and no capstan and wherein the converging time to a rated speed upon starting of feeding of a tape can be reduced and the tape can be fed stably at the rated speed during recording and/or reproduction of the tape. A rotary encoder for detecting a period of rotation is disposed between a recording and/or reproducing head and a take-up side reel, and a deviation from a predetermined reference value or a feeding position of the tape is calculated from the period of rotation detected by the rotary encoder.

Abstract: A system for passing through resource information in a computer system including an actual process, a back-up process, and a shared memory connected to the actual process and the back-up process. The actual process includes information which is stored in the shared memory and passed through to the back-up process by passing the contents of the shared memory to the back-up process. The back-up process performs an operation as a new actual process after being passed the contents of the shared memory when the actual process is not operable. The shared memory includes two sets of areas which respectively include an original information area storing information which is transmitted from the actual process to the back-up process, and a difference area storing information related to a change when the actual process changes the original information area.

Abstract: Disclosed is a multi-color transfer image forming method, which comprises subjecting a colored image forming material having a coloration recording layer comprising at least two layers and containing a photosensitive material and a colorant on a support to aqueous development after imagewise exposure, thereby forming a colored image, transferring the colored image to an image receiving member through the outermost surface of the coloration recording layer and then transferring at least one colored image with different hue onto the same image receiving member in conformity with the colored image, characterized in that the layer of the coloration recording layer remotest from the support is a layer adherable to the image receiving member, and only the colored image portion is transferred onto the image receiving member to have the image receiving member surface exposed at the non-image portion of the multi-color image.

Abstract: A suction casting apparatus is disclosed, which comprises a ventilating casting die, a chamber box and a surface peat for supporting the casting die and chamber box. The surface plate has a a through hole for passing a stalk therethrough, and its surface is formed with grooves which extend from the through hole to an area outside a die mounting area and inside a chamber box mounting area. External air entering through a sealed clearance between the surface plate and the stalk and combustion gas generated from the casting die are quickly led through the grooves into the chamber inner space to be quickly exhausted to the outside.

Abstract: The invention provides a method of transferring an image from a transferring medium onto a record sheet. The method includes steps of setting a record sheet on a rotatable drum; superposing a transferring medium, in which only an image to be transferred is formed on a support material of the transferring medium, on the record sheet; and pressing the transferring medium and the record sheet onto the drum by a pressing roller while rotating the drum so that only the image is transferred to the record sheet.

Abstract: There is disclosed an image forming method which comprises forming an image portion by exposing and developing an image forming material having a light-sensitive composition, and transferring only the image portion onto an image receiving material with the non-image portion of the image receiving material being exposed, wherein the light-sensitive composition contains:(1) at least one selected from:(a) o-quinonediazide compounds; and(b) compositions containing both of a photoacid generating agent and a compound having at least one bond decomposable with the acid; and(2) a polymeric compound having a structure unit represented by the following formula in the molecular structure:CH.sub.2 --CH(OCOR)--wherein R represents an alkyl group having 1 to 17 carbon atoms.

Abstract: A light-shielding screen device comprising a first light transmissible substrate, a second light transmissible substrate and an intermediate layer sandwiched therebetween, the intermediate layer comprising at least one light-shielding screen portion located in the middle area of the intermediate layer and a light non-transmissible retaining portion located at least in a portion of the remaining area of the intermediate layer, the portion of the remaining area including the entire outermost peripheral area of the intermediate layer. The light non-transmissible retaining portion of the intermediate layer of the present light-shielding screen device securely retains on its both sides the first and second light transmissible substrates, respectively.

Abstract: A reflection preventive light-shielding screen comprising a transparent plate and a side surface-rough relief of a cured photopolymerized resin composition formed thereon and having a striped pattern or a lattice pattern. The present reflection preventive light-shielding screen can effectively shield extraneous light rays without scattering the light rays emitted from image-indicating devices. Therefore, the present reflection preventive light-shielding screen can be advantageously used for various extraneous light rays-shielding applications. Furthermore, the present reflection preventive light-shielding screen can be produced by an extremely simple process as compared with those of the prior art.

Abstract: An automatic fuel supply stopping device incorporated in fuel combustion equipment including a shut-off valve and a combustor. The automatic fuel supply stopping device comprises a fluid intercepting mechanism interposed in a channel through which the fuel supply to the combustor is supplied. A photosensor is adapted to detect fuel combustion in the combustor by radiation emitted from a thermosensitive luminous medium. The fluid intercepting mechanism alternately takes its first stable state or passage blocking state and is changed over, in response to an output from a sensor circuit, from the passage opening state to the passage blocking state.

Abstract: An operating mode change-over apparatus in a tape recorder includes: a plunger-solenoid having a stationary iron core and a movable iron core movable from a first position in contact with, and a second position spaced from, the stationary iron core; an electric motor; a pinion driven by the electric motor; a rack engageable with and disengageable from the pinion; an operating mode change-over member driven by the rack; a locking lever driven by the movable iron core and holding the engaged condition of the rack and pinion; and a spring for pressing the movable iron core to the stationary iron core, wherein, while the movable iron core is pressed to the stationary iron core, the plunger-solenoid is energized, and the electric motor is driven.

Abstract: A fluid shut-off device is provided which comprises a magnetic valve body provided in a non-magnetic hollow casing for movement between a first position to open a fluid passage and a second position on a valve seat to close the passage, and an annular permanent magnet provided outside the casing and urged toward the periphery of the valve seat by an elastic spring. The valve body is normally held in the first position but is allowed to move to the second position by the magnetic force of the permanent magnet at a predetermined condition.

Abstract: A fluid shut-off device is provided which comprises a non-magnetic casing having a fluid passage therein, a metallic valve body movably disposed in the casing to close the passage at one operative position, and a magnetic member slidably disposed outside the casing and magnetically attracting the valve body. The magnetic member takes an inoperative position against a spring force and is locked at this position. The lock is released by a bimetallic strap deformable by supply of an electric current. When the lock is released, the magnetic member is moved by the action of the spring force, so that the valve body magnetically attracted by the magnetic member is also moved to the operative position to shut off the flow of fluid material through the passage.

Abstract: A mode change-over mechanism for a recording and/or reproducing apparatus comprises a drive gear which is effective to drive a cam gear upon the release, by energizing of at least one of a plurality of electro-magnets, of a stopper for the cam gear so that a cam on the latter can effect a longitudinal displacement, in one direction, of a detecting slide which is thereafter spring urged to return to an original position, a plurality of selecting slides individually movable in response to energizing of respective ones of the electro-magnets for selectively limiting the return movement of the detecting slide toward the original position, mode establishing slides individually displaceable for changing-over the apparatus into respective operating modes thereof, a mode change-over lever positionable by the detecting slide for coupling with a selected one of the mode establishing slides in response to the selective limitation of the return movement of the detecting slide toward its original position, and a drive ass

Abstract: In pouring molten metal in a die casting device wherein a shot sleeve for supplying molten metal in a die cast mold is substantially horizontally arranged, a guide means for conducting molten flow is obliquely removably inserted into said shot sleeve through an opening provided at a top portion of said shot sleeve so as to guide a flow of molten metal directly into a molten holding space provided at a forward end portion of said shot sleeve.