Tokyo Shibaura Denki Kabushiki Kaisha

Yukio Suzuki

Toshihiko Oguchi

Tsutomu Uehara

Tsutomu Kubo

Takeshi Matsuo

Ichiyoshi Saito

Toshiharu Nakagawa

Syozo Kobayashi

An electrophotographic photosensitive member constituted of an electroconductive supporting substrate and a photoconductive layer provided on said substrate, said photoconductive layer being composed primarily of a microcrystalline silicon or a layered product of a microcrystalline silicon and an amorphous silicon.

Electrophotographic photosensitive member using microcrystalline silicon

A high-frequency heating device comprises a rotating disk including a base plate made of a material having low dielectric loss and arranged above in a heating chamber to rotate around its center axis, and a plurality of high-frequency screening pieces each arranged on the base plate and defining an exciting opening therebetween which has plural portions extending radially from the center axis to the outer circumference of the base plate. The rotating disk is driven by a motor or a part of air flow for cooling a magnetron whereby high frequency energy generated by a magnetron is introduced into the heating chamber through a waveguide and the exciting opening.

High-frequency heating device

A high-frequency heating device comprises a rotating disk including a base plate made of a material having low dielectric loss and arranged above in a heating chamber to rotate around its center axis, and a plurality of high-frequency screening pieces of a fan shape each arranged above the base plate through projections and defining an exciting opening therebetween which has plural portions extending radially from the center axis to the outer circumference of the base plate. The rotating disk is driven by a motor whereby high-frequency energy generated by a magnetron is introduced into the heating chamber through a wave-guide and the exciting opening.

A microwave heating apparatus comprises a heating chamber, high frequency radio wave generator and heating resistors selectively connected through first and second switches to a power supply, and a control circuit connected through the first switch to the power supply. The heating apparatus also comprises heating resistor coupling units each including a displaceable member and a third switch. The displaceable member is displaced when the heater end is inserted into a predetermined position of the coupling unit. The third switch is closed when this displaceable member is displaced. This third switch is connected in series between the first switch and the control circuit. The high frequency radio wave generator or the heater is not connected to the power supply unless the heater end is completely connected to the heater coupling unit. Accordingly, it can prevent external leakage of the radio wave, dielectric breakdown accident or the like.

Microwave heating apparatus with resistive heaters

An apparatus for forming a cloud of magnetic toner particles has a rotatable magnet roller with a number of magnetic poles disposed within a non-magnetic cylindrical sleeve. Magnetic toner particles are supplied from a hopper onto the sleeve. A magnetic bar is disposed above the sleeve. The rotation of the magnet roller causes the sleeve to carry magnetic toner particles thereon. When the magnetic toner particles carried approach to the magnetic bar, those become in a cloudy state.

Apparatus for forming a cloud of toner particles

A magnetic brush apparatus is provided with a hopper for supplying powdered one-component magnetic developer to a cylindrical sleeve housing a rotating magnet roller with a number of magnetic poles. The powdered magnetic toner supplied onto the sleeve surface is formed into a magnetic brush on the sleeve surface under control of alternating magnetic field generated by the magnet roller. The magnet brush is carried around the sleeve surface with rotation of the magnet roller. Outside the sleeve surface a predetermined distance is positioned a magnetic member which may be attached to the tip end of a doctor blade. The magnetic member disturbs the alternating magnetic field on the sleeve surface, thereby restricting the height of the powdered developer passing between the end of the magnetic member and the sleeve surface.

Growing community of inventors

Ayase, Japan

Yukio Suzuki