Plus Corporation

Zero Lab Co., Ltd.

Kuroudo Hara

Ritsuo Koga

Hideto Kubouchi

Kouichi Minami

A magnetic erasing device including a magnet that includes an S pole and an N pole extending along an axial direction of the magnet, and a rotation mechanism for rotating the magnet in a housing around an axis of the magnet, wherein lines of magnetic force generated around the axis of the magnet during rotation of the magnet are designed to be applied to magnetic particles in the microcapsules to erase a visible image on a magnetic panel when the axis of the magnet is spaced from a surface of the magnetic panel by a predetermined distance.

Magnetic erasing device

A magnetic eraser can be used for erasing markings drawn on a magnetic sheet. The magnetic eraser includes a housing with a magnet placed in the housing. The magnetic eraser also includes a first magnetic body placed between a first surface of the housing and the magnet. The first surface of the housing can provide a first erasing surface.

Magnetic eraser, writing system and display device

A magnetic erasing device includes a rotating member provided in an internal space of a cylindrical housing, a first magnet and a second magnet attached to the rotating member, and a motor for driving the rotating member. The first magnet is arranged so that the S pole is exposed and the second magnet is attached so that the N pole is exposed. By rotating the rotating member, the magnetic field generated by the first and second magnets is changed.

A magnetic pen can be used in drawing arbitrary characters, figures, and symbols on a magnetic panel for a display by applying a magnetic field. The magnetic pen includes a body that includes an end portion. A holder made of a magnetic material is attached to the end portion and an internal space is formed in the holder. The holder includes a bottom portion formed with an opening and a side portion connected to the bottom portion. A magnet is arranged in the internal space of the holder. The magnet is received in a space formed by the bottom portion and the side portion.

Magnetic pen

A magnetic pen can be used with a magnetic panel. The magnetic pen includes a body with an end portion. A holder made of a magnetic material is attached to the end portion and an internal space is formed in the holder. A magnet having an S pole and an N pole is arranged in the internal space of the holder so that the S pole and the N pole are opposite the magnetic panel.

A lamp cartridge according to the present invention includes a lamp as a light source; a reflecting mirror for converging the light emitted from the lamp; and several side surfaces forming a case for covering the lamp, the reflecting mirror and for supporting the reflecting mirror. In the present invention, one of the surfaces forming the case where light is emitted out of the lamp cartridge and away from the reflecting mirror is provided with a hole having a diameter smaller than that of the end of the reflecting mirror. In addition, an optical axis of the hole is directly aligned with an optical axis of the end of the reflecting mirror where light is emitted out of the lamp cartridge. Further, a fan is provided on one of the side surfaces forming the lamp cartridge case. Outside air is introduced through the hole and into the interior of the lamp cartridge whereby heat generated by the lamp and the reflecting mirror is exhausted by the fan.

Lamp cartridge

Image display apparatus

The present invention discloses an automatic sheet feeder to feed manuscript sheets onto and discharge the same from the top of the stage on the overhead projector. The automatic sheet feeder comprises a side guide plate disposed at the top of a side edge of the stage, a bottom plate forming a manuscript set window together with the side guide plate, a side plate perpendicular to the side guide plate, a plurality of side feeding rollers for forward and backward rotations supported by the above side plate, and notches formed at the above side guide plate immediately below these rollers to accept the manuscript sheet whose side edge is pressed downward by the outer circumference of the side feeding rollers.

Automatic manuscript sheet feeder

An opaque projector includes a light source, a stage through which the light radiating from the light source passes and on which an object is placed, a projection mirror for reflecting light reflected by the object, and a projector lens for gathering the light reflected by the projection mirror to form an image of the object on an image projecting surface located outside of the projector. A reflection mirror for reflecting the light from the light source to illuminate the object is provided on each of the two sides of the projection mirror. The light source is disposed in front of the projeciton mirror and on the inner sides of the reflection mirrors. The reflection mirrors and light source are disposed at positions relative to each other and to the projection mirror which ensures that the light reflected by the reflection mirrors, and regularly reflected by the object and the stage, is not incident on the projection lens and that the real and virtual images of the light source exist outside of the field angle of the projection lens.

Opaque projector

Information of an object to be read out is read out by an image sensor synchronizing with a first synchronous signal and is stored in a memory which is then subjected to printing on a transfer surface in synchronism with a second synchronous signal by moving the transfer apparatus in contact with the outside transfer surface.

Growing community of inventors

Tokyo, Japan

Ritsuo Koga