摘要:
The apparatus for waste water treatment has, in a tank, a contact circulation part in which Bincho charcoal is accommodated, a sprinkling circulation part which is disposed above the contact circulation part and in which black coal is accommodated, air lift piping for lifting treatment-object water from the contact circulation part to the sprinkling circulation part, a water-sprinkling tube for sprinkling the treatment-object water onto the sprinkling circulation part, an aquatic plant cultivation bed disposed between the contact circulation part and the sprinkling circulation part, and air-diffusing tubes for introducing malodorous gas. Small quantity of surfactants and colorants are adsorbed by the Bincho charcoal and the black coal and decomposed by microorganisms that have grown in the Bincho charcoal and the black coal. The microorganisms act to biologically decompose the malodorous gas.
摘要:
For producing a vibration insulator for use in a motor vehicle or the like, a unique method is described which comprises (a) producing an inner unit which includes an inner cylindrical member of metal and a compounded rubber block disposed about the inner cylindrical member; (b) applying an adhesive to an inner surface of an outer cylindrical member of FRP, the adhesive being of a type which is cured and hardened when heated; (c) press-fitting the inner unit in the outer cylindrical member; (d) putting an electrode plate around the outer cylindrical member near the inner unit; and (e) applying a high frequency current to the electrode plate to induce a high frequency dielectric heating by which the adhesive and the compounded rubber block are heated, the high frequency current having a frequency lower than 100 MHz.
摘要:
A semiconductor device has a main GTO thyristor section, an auxiliary GTO thyristor section and a MOS transistor section. The main GTO thyristor section is turned on and off in accordance with a gate signal supplied to its gate terminal. The auxiliary GTO thyristor section supplies an igniting signal to the gate of the main GTO thyristor in accordance with an optical signal. The MOS transistor supplies an extinguishing signal to the gate of the main GTO thyristor section in accordance with an optical signal supplied to it.
摘要:
A drive control system for controlling a drive motor in response to external command signals. The system comprises a first control arrangement for obtaining numerical values corresponding to amounts of successive intermittent operations of the drive motor responsive to respective external command signals, summing the obtained numerical values, and subtracting from a current sum of the numerical values a numerical value corresponding to a non-operation time period during which the drive motor is held at rest between the successive intermittent operations. The system further comprises a second control arrangement for inhibiting the operation of the drive motor responsive to the next command signal, for a length of time corresponding to the current sum after the drive motor has completed each of the intermittent operations, whereby the temperature of the drive motor is kept below an upper limit.
摘要:
The carrier core particles for electrophotographic developer have a volume size distribution with a median particle size ranging from 30 μm to 40 μm, the ratio of the carrier core particles having a diameter of 22 μm or lower in the volume size distribution is from 1.0% to 2.0%, the ratio of the carrier core particles having a diameter of 22 μm or lower in a number size distribution is 10% or lower, and the magnetization of the carrier core particles in an external magnetic field of 1000 Oe is from 50 emu/g to 75 emu/g.
摘要:
An image reading apparatus includes a reading unit which reads an image on a document while being conveyed, a cover movable between an opened position where the reading unit is opened and a closed position where the reading unit is covered, a metal pressing member held by the cover and configured to face the reading unit and press the document toward the reading unit when the cover is at the closed position, a metal frame supporting the conveyor and configured to face the pressing member when the cover is at the closed position, and a ground member directly connected to the frame and configured to be separated from the pressing member when the cover is at the opened position, and to be in contact with the pressing member when the cover is at the closed position.
摘要:
An image reader is provided that includes a housing, a sheet support surface disposed at the housing and configured to support a sheet placed thereon, a conveyor that includes a roller and conveys the sheet in a first direction, a drive unit generating a driving force for driving the conveyor, an image sensor unit reading an image on the sheet being conveyed by the conveyor, a cover configured to rotate between an open position to expose the roller and a closed position to cover the roller around a rotational axis extending in a second direction perpendicular to the first direction, and a detector configured to output a first signal when the cover is in the closed position and output a second signal when the cover is in the open position, the detector disposed on a same side as the drive unit in the second direction with respect to the sheet support surface.
摘要:
An image forming apparatus includes a driving source, a first rotator, a first power transmission system, at least one second rotator, a second power transmission system, and a damper. The driving source generates power. The first rotator is drivingly rotated by the power generated by the driving source. The first power transmission system transmits the power from the driving source to the first rotator. The second rotator is further downstream than the first rotator in a flow of power transmission. The second power transmission system transmits the power from at least one of the first power transmission system and the first rotator to the at least one second rotator. The damper attenuates oscillation between the first power transmission system and the second power transmission system or between the first rotator and the second power transmission system.
摘要:
An image carrier driver includes an image carrier, a first power transmitter, a rotator, a second power transmitter, and a damper. The image carrier is configured to rotate by power generated by a driving source. The first power transmitter is configured to transmit the power from the driving source to the image carrier. The rotator is disposed further downstream than the image carrier in a flow of power transmission. The second power transmitter is configured to transmit the power from the image carrier to the rotator. The damper is disposed in the image carrier and is configured to attenuate an oscillation associated with the power transmission and transmitted to the image carrier.
摘要:
An image reader is provided that includes a housing, a sheet support surface disposed at the housing and configured to support a sheet placed thereon, a conveyor that includes a roller and conveys the sheet in a first direction, a drive unit generating a driving force for driving the conveyor, an image sensor unit reading an image on the sheet being conveyed by the conveyor, a cover configured to rotate between an open position to expose the roller and a closed position to cover the roller around a rotational axis extending in a second direction perpendicular to the first direction, and a detector configured to output a first signal when the cover is in the closed position and output a second signal when the cover is in the open position, the detector disposed on a same side as the drive unit in the second direction with respect to the sheet support surface.