Abstract: A developing device including a developer container casing, a developer bearing member to supply toner to a latent image, a supply path to convey developer in an axial direction of the developer bearing member, a supply conveyance member to apply a force to the developer in the supply path to convey the developer, a recovery path to return the developer reaching a downstream end of the supply path to an upstream end of the supply path relative to a direction of conveyance of the developer, and a recovery conveyance member to apply a force to the developer in the recovery path to convey the developer. A bottom surface of the supply path is tilted such that the bottom surface at the downstream end of the supply path relative to the direction of conveyance of the developer is lower than the bottom surface at the upstream end of the supply path.

Abstract: A developing device includes a first screw that supplies a developer to a developing roller while agitating/conveying the developer in a first direction, and a screw that collects residual developer from the developing roller, agitates/conveys the residual developer in a second direction opposite to the first direction, and delivers the residual developer to the first screw. Between two points that a magnetic flux density in a normal direction of a magnetic field formed in a developer separating magnetic pole in the developing roller become substantially zero, a point at a downstream side in a rotating direction of the developing roller is formed at an upstream side to a developing roller rotating direction, than a line joining the center of the developing roller and the center of the second screw.

Abstract: A brake mechanism in a tape recorder for applying a brake force to a supply reel and a take-up reel. In particular, a supply reel main brake and a take-up reel main brake are rotatably supported on a movable chassis. The brakes have first ends provided with rubber pads and opposite ends provided with abutting portions which are abuttable with each other. Intermediate portions of the brakes are provided with control pins which are in abutment with the cam portion of a slider. A spring interconnects the control pins. The brakes are configured such that the abutting piece of the supply reel side main brake pushes the abutting piece of the take-up side main brake so as to cause the rubber pad to be displaced from the take-up reel stand. Accordingly, the take-up side main brake is controlled by movement of the supply side main brake.

Abstract: A tape recorder including two chassis which are relatively movable from the tape loading and unloading positions is provided. One of the chassis mounts thereon a rotary drum, a capstan, a tape loading mechanism and motors for driving these segments. Another chassis mounts thereon a reel stand, a mode switching mechanism and drive motors for driving these segments. The tape loading mechanism includes first and second guide members adapted to be movable along an outer periphery of the rotary drum. The guide members have tape draw-out pins for drawing out the tape from a tape cassette and a third guide member adapted to draw out the tape in cooperation with the first and second guide members. The third guide member has a first tape draw-out pin which changes the height of the tape draw-out position to a height which is the same as that of the tape cassette position.

Abstract: A tape draw-out mechanism in a tape recorder which has a tape cassette mounted thereon. The tape recorder includes a rotary drum having a magnetic head where a tape is drawn out from the tape cassette and wound on the rotary drum by a predetermined amount for recording and reproduction. The tape draw-out mechanism includes first and second guide members which are adapted to be movable along an outer periphery of the rotary drum for drawing out the tape from the tape cassette. Additionally, a third guide member is provided to draw the tape out in cooperation with the first and second guide members. The third guide member includes a first tape draw-out pin which adjusts the height of the tape passed through a capstan at a terminal end of the tape draw-out position to a height which corresponds to the height of the tape cassette position.

Abstract: A vacuum fuse includes a pair of metallic spiral elements of different wrapping directions mounted on inner end portions of axially aligned conductor rods. The radial inner ends of spiral elements are electrically connected to respective conductor rods and the radial outer ends are electrically connected to outer metallic rings, respectively. Arcing electrode disks are mounted to opposite axial ends of the outer rings to define confronting spaced apart and parallel arcing surfaces. A fusible element is connected between the conductor rods. When the fusible element is broken by an excess current, an arc is produced between the arcing surfaces and a magnetic flux is induced by the current flowing through the spiral elements. The magnetic flux causes the arc to move so that each arcing electrode is prevented from being locally heated, thereby improving the current interrupting property of the fuse.