Abstract: A shredder equipped with paper feeder comprises a shredder unit including a pair of intermeshed cutting cylinders driven by a power source and a paper feeder, which paper feeder has a cover, a paper feeding tray on which paper sheets are set and held, a lifter unit pivotally mounted on a base of the paper feeding tray to be vertically movable, a first feed roller for feeding out multiple paper sheets from the paper feeding tray, a separator wall for controlling the number of paper sheets fed to approximately the number the shredder can shred at one time, a second feed roller for feeding forward the paper sheets passed by the separator wall, a control unit for feeding from the second feed roller a number of paper sheets not greater than the number the shredder can shred at one time, a third feed roller and fourth feed roller for nipping and transporting to the shredder the paper sheets exiting the control unit, and a control switch for controlling the operation of the first feed roller and second feed roller.

Abstract: An automatic paper feeding mechanism and an automatic paper feeding device incorporating the mechanism are provided that enable a stack of document sheets to be automatically fed into a shredder by at least one disk-shaped claw member in lots of a specified maximum number of sheets for shredding by the shredder, simply by setting the stack in the paper feeder. The automatic paper feeding mechanism is adapted to be supplied with rotational power by a shredder nit having intermeshed cutting blades for supplying paper sheets to the shredder unit in lots of two or more. It is equipped on at least one side face of a paper feed roller of a paper feeding section with a disk-shaped claw member formed with sharp portions for automatically supplying paper sheets to the shredder unit under piercing.

Abstract: An electric pencil sharpener comprises a wasteful shaving prevention mechanism for separating the rotatable cutting blade from the pencil a pencil-core tip adjustment mechanism for adjusting the diameter of the shaved pencil-core tip, and a core fragment removal mechanism for removing any broken off pencil-core fragment remaining in the electric pencil sharpener. The wasteful shaving prevention mechanism includes the cutting blade, a cutter shaft and a plate and is structured to separate the cutting blade from the pencil when sharpening if finished. The pencil-core tip adjustment mechanism includes a pencil-core tip adjustment dial, a rotatable pencil-core tip adjustment screw, a gear shaft, a connecting rod, a plate and a stop. The core fragment removal mechanism includes a button, a gear shaft, a connecting rod, a plate and a stop. An electric pencil sharpener that further incorporates a pencil diameter adapter is also provided.

Abstract: A shredder equipped with paper feeder comprises a shredder unit including a pair of intermeshed cutting cylinders driven by a power source and a paper feeder, which paper feeder has a cover, a paper feeding tray on which paper sheets are set and held, a lifter unit pivotally mounted on a base of the paper feeding tray to be vertically movable, a first feed roller for feeding out multiple paper sheets from the paper feeding tray, a separator wall for controlling the number of paper sheets fed to approximately the number the shredder can shred at one time, a second feed roller for feeding forward the paper sheets passed by the separator wall, a control unit for feeding from the second feed roller a number of paper sheets not greater than the number the shredder can shred at one time, a third feed roller and fourth feed roller for nipping and transporting to the shredder the paper sheets exiting the control unit, and a control switch for controlling the operation of the first feed roller and second feed roller.

Abstract: An electric stapler is provided that performs stapling driven by electric power and is provided with a release button for operation at the time of reloading staples to release and eject a magazine frame retained under pressure. The electric stapler is provided on the magazine frame with at least one engagement projection and on a main unit with at least one engagement potion constituting a stop that engages with the engagement projection to control the ejection distance of the magazine frame so that the magazine frame is not ejected by an elastic body more forcefully than necessary upon operation of the release button.

Abstract: A pencil sharpener includes a frame, a drive mechanism, a transmission mechanism, a cutting mechanism, and a pencil-core adjustment mechanism. The pencil-core adjustment mechanism is constituted of a core stopper shaft, an elastic body, and a core adjustment switch constituted of electrode plates aligned in parallel. A pencil inserted into the cutting mechanism presses against and turns ON a switch provided in the drive mechanism to transmit power from the electric power supply unit to the drive device, thereby operating the cutting mechanism via the transmission mechanism to sharpen the pencil. When the pencil is pressed against the upper end of the core stopper shaft, a disk of the core stopper shaft contacts and pushes down one end of the longer electrode plate to separate the projection of the longer electrode plate from the shorter electrode plate, thereby turning OFF the core adjustment switch.

Abstract: A pencil sharpener includes a frame, a drive mechanism, a transmission mechanism, a cutting mechanism, and a pencil-core adjustment mechanism. The pencil-core adjustment mechanism is constituted of a core stopper shaft, an elastic body, and a core adjustment switch constituted of electrode plates aligned in parallel and provided with a projection for making contact to establish an electrically conductive state. A pencil inserted into the cutting mechanism presses against and turns ON a switch provided in the drive mechanism to transmit power from the electric power supply unit to the drive device, thereby operating the cutting mechanism via the transmission mechanism to sharpen the pencil. When the pencil is pressed against the upper end of the core stopper shaft, a disk of the core stopper shaft contacts and pushes down one end of the longer electrode plate to separate the projection of the longer electrode plate from the shorter electrode plate, thereby turning OFF the core adjustment switch.

Abstract: The invention provides an improved electric tape cutter in which a pinion gear with an attached magnet that is connected to a drive source is embedded with a member having a weight equal to that of the magnet at a location that is symmetrical to the location at which the magnet is mounted, with respect to a center axis of rotation, imparting balanced rotation that enables eccentric rotation of the pinion gear to be prevented, preventing noise and apparatus malfunction.

Abstract: This invention provides a decorative hole punch of a structure such that anyone would be able to easily and safely return the cutting head to its original position by raising the arm after cutting holes, and such that its manufacturing process is simplified. The structure is such that, in a decorative hole punch comprising a frame, cutting head, guide hole, slit and a cutting head lever arm: the cutting head consists of a decorative hole cutting head formed in the shape of one of a variety of patterns, and also, the cutting head lever arm is pivotally supported by a support provided to one side of the external frame such that the back end of the arm rotates freely about a support pin in pivot holes so that the cutting head travels down vertically along the guide hole, and also is linked via a linkage pin to central linkage holes in a linkage area at the top end of the cutting head near the center of the arm.

Abstract: An electric stapler comprises a case body, a drive section consisting of a motor and gears, electrical circuitry, a magazine frame in which staples are loaded, and an arm that pushes down on staples in the magazine frame so that the staples penetrate and fasten a sheaf of documents. The staples are pressed down on a document sheaf under the weight of the magazine frame. The stapling operation is effected by the magazine frame and arm swing up and down about swingable fulcrums, with the arm pushing down on a staple stored in the magazine frame and the magazine frame swinging about a swingable fulcrum to press against the document sheaf. An elastic body is provided on the lower part of the magazine frame that urges the magazine frame and arm back to their original stapling position. A deformation prevention member is provided on the front end of the magazine frame to prevent the magazine frame from being deformed due to frequent use.

Abstract: An adhesive tape cutter is provided with a circular cutting blade, and by making the cutting portion that comes into contact with the tape a roughly 90° partial arc, cutting is possible in the center and also even if the tape is twisted to either the left or right, a cut can be easily made and the tape can be easily cut. The adhesive tape cutter consists of a tape holding mechanism, cutting mechanism, and a support member. The cutting mechanism consists of a circular cutting blade disposed perpendicular to the lengthwise direction of adhesive tape unwound from the roll, and a left and right pair of rotating protective members above the circular cutting blade that also serve as tape guides and that rotate in a direction perpendicular to the lengthwise direction of the tape.

Abstract: An electric punch for automatically punching holes in documents and the like is provided that allows the spacing between the holes to be selectively set at either 70 mm (U.S. standard) or 80 mm (European and Japanese standard) by forming a bend midway of the length of operating arms of respective perforating members so that forward and rearward portions of the operating arms are laterally offset in parallel by a prescribed distance and clamping the operating arms with two supports of different width, thereby enabling the punched hole spacing to be selectively changed by exchanging the left and right perforating members.