Abstract: A powder conveying device includes: a conveying nozzle, provided with a powder receiving opening; an open/close member to open/close the powder receiving opening; a flange provided to the open/close member; a biasing member to bias the open/close member; and a container setting section to which a part of a powder container is to be fit. The powder container includes: a conveyor to convey the powder from a second end of the powder container to a first end; a container opening protruding from the first end; a nozzle receiving opening into which the conveying nozzle is to be inserted; and a butting portion provided in the container opening, to butt against the flange. When the powder container is attached to the powder conveying device, the container opening is fitted to the container setting section, and the flange and the biasing member are housed in an inner space of the container opening.

Abstract: A powder conveying device includes: a conveying nozzle, provided with a powder receiving opening; an open/close member to open/close the powder receiving opening; a flange provided to the open/close member; a biasing member to bias the open/close member; and a container setting section to which a part of a powder container is to be fit. The powder container includes: a conveyor to convey the powder from a second end of the powder container to a first end; a container opening protruding from the first end; a nozzle receiving opening into which the conveying nozzle is to be inserted; and a butting portion provided in the container opening, to butt against the flange. When the powder container is attached to the powder conveying device, the container opening is fitted to the container setting section, and the flange and the biasing member are housed in an inner space of the container opening.

Abstract: A powder conveying device includes: a conveying nozzle, provided with a powder receiving opening; an open/close member to open/close the powder receiving opening; a flange provided to the open/close member; a biasing member to bias the open/close member; and a container setting section to which a part of a powder container is to be fit. The powder container includes: a conveyor to convey the powder from a second end of the powder container to a first end; a container opening protruding from the first end; a nozzle receiving opening into which the conveying nozzle is to be inserted; and a butting portion provided in the container opening, to butt against the flange. When the powder container is attached to the powder conveying device, the container opening is fitted to the container setting section, and the flange and the biasing member are housed in an inner space of the container opening.

Abstract: A printer using ink jet printing technology to print one or more colors on a sheet for use in a box is described. The printer has a feeder, a transport mechanism for moving the sheet the print head, and a stacker to receive the printed sheet. Differential air pressure is applied by a suction box disposed in proximity to a conveyer belt for transporting the sheet. The suction box may sized so that the sheet may be oriented with a long dimension in the direction of feeding. Where multiple print heads are used, the print heads overlap in the direction transverse to the motion of the sheet so that an image larger than a print head may be produced. Two printing mechanisms disposed opposite each other may be used to print two sides of a sheet.

Abstract: A printer using ink jet printing technology to print one or more colors on a sheet for use in a box is described. The printer has a feeder, a transport mechanism for moving the sheet the print head, and a stacker to receive the printed sheet. Differential air pressure is applied by a suction box disposed in proximity to a conveyer belt for transporting the sheet. The suction box may sized so that the sheet may be oriented with a long dimension in the direction of feeding. Where multiple print heads are used, the print heads overlap in the direction transverse to the motion of the sheet so that an image larger than a print head may be produced. Two printing mechanisms disposed opposite each other may be used to print two sides of a sheet.

Abstract: An electrophotographic image forming apparatus including a developing unit operable with a one- or two-ingredient type developer and a device for replenishing toner to the developing unit included in the apparatus are disclosed. A plurality of toner bottles are accommodated in the toner replenishing device, so that the toner is replenished from one toner bottle to the developing unit. A rotating mechanism causes all the toner bottles to rotate during toner replenishment. A device is provided for determining the frequency of use of the individual toner bottle. The toner discharged from each toner bottle is fed to a toner transport portion via a respective passageway.

Abstract: An image forming apparatus includes a toner bank that is configured to hold a large-volume of toner that is ultimately used to develop a latent image formed on a latent image carrier. A developing apparatus develops the latent image into a visible image. The toner is supplied to the toner bank, which need not be located adjacent to the developing apparatus, using a mechanism that prevents the toner from becoming clogged while being transported to the developing apparatus from the toner bank. In the toner bank, more than one toner bottles are vertically set. The toner bottles are individually opened and closed at respective opening portions thereon with an opening/closing mechanism and are rotated so as to discharge toner therefrom. Toner discharged from the toner bottles is dropped into the toner bank and is supplied to a developing apparatus by a flexible toner delivering mechanism having a powder pump unit and a flexible toner supplying pipe.

Abstract: An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.

Abstract: An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.

Abstract: A remote control transmitter used for a switching of a state of a door lock device between a locked state and an unlocked state and so on comprises a portable-size case, operating buttons provided on an outer surface of the case, a secondary battery provided within the case, a solar battery provided on the outer surface of the case and rechargeably connected to the secondary battery, and a generator for generating a coded signal. One terminal of each operating button is connected to a positive terminal of the secondary battery and the other terminal is connected to a positive terminal of the generator. When one of the operating buttons is pushed, electric current is fed from the secondary battery to the generator.

Abstract: Disclosed is a corrugated board sheet transporting system in a printing line, in which a plurality of printers, each provided with an ascendable printing cylinder having a printing die mounted thereon and a press roll opposing to the printing cylinder, are aligned in a corrugated board sheet forwarding direction. This system consists of a first feed belt unit and a second feed belt unit for holding the corrugated board sheet with the first feed belt unit, which are disposed between every adjacent two printers; the first feed belt unit consisting of a first conveyor belt which is fixed with respect to the sheet forwarding direction and a second conveyor belt which can be shifted forward and backward with respect to the sheet forwarding direction; wherein the second conveyor belt is designed to be shifted, when the printing cylinder is ascended or descended to be spaced from the press roll, to advance to a position closer to the printing cylinder in the printer.

Abstract: High-sensitivity transmission can be performed in a wide temperature range, and spread spectrum communication free from jitters and bit errors in high-speed digital signal transmission can be performed. There is provided a spread spectrum communication transmitter for performing FSK modulation for switching the frequency in correspondence with the level of each bit of the serial digital data, performing spread spectrum modulation of a resultant FSK-modulated signal, and transmitting the data, wherein an FSK modulation unit (1) for performing the FSK modulation has a direct digital synthesizer and a synchronization circuit (19) is arranged to synchronize an FSK signal having a frequency corresponding to at least one level of the each bit with a PN code for the spread spectrum modulation.

Abstract: An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.

Abstract: Disclosed is a printing die replacement assisting unit for facilitating die replacement by an operator in a printing apparatus having a plate cylinder rotatably supported in the main body of the apparatus with a printing die having engagement plates being mounted on the circumference of the plate cylinder, the printing die replacement assisting unit comprising a support frame disposed on the main body, with a fitting member being descendably supported on supporting means disposed on the support frame; holding means disposed to the fitting member, which can releasably hold one of the engagement plates of the printing die; and an urging means connected to the supporting means, which normally urges the means in the direction such that the fitting member may be ascended, but allows pulling down of the fitting member; wherein the printing die is designed to be held by and suspended from the fitting member via the holding means.

Abstract: A surface acoustic wave convolver includes first and second interdigital electrodes for exciting surface acoustic waves and an output electrode for detecting the surface acoustic waves to extract a convolution output as an electrical signal, the first and second interdigital electrodes and the output electrode being formed on a piezoelectric or electrostrictive substrate.

Abstract: A surface acoustic wave element has a low insertion loss in one direction and a wide band width. This surface acoustic wave element has first and second interdigital electrodes each having a thickness on a piezoelectric or electrostrictive substrate. In a first interdigital electrode for exciting a surface acoustic wave, positive and negative electrodes are alternately arranged such that their electrode widths and periods are gradually decreased in a direction of propagation of the surface acoustic wave. In a second interdigital electrode for receiving the surface acoustic wave, positive and negative electrodes are alternately arranged such that their electrode widths and periods are gradually increased or decreased in the direction of propagation of the surface acoustic wave.

Abstract: In the control of the operation of a power plant including a gas turbine power generating unit, a main boiler whose heat source is exhaust gas of the gas turbine and which supplies steam to a heat load, a back-up boiler which has an independent fuel system and which is operated to supply steam to the heat load when the quantity of supply of steam of the main boiler to the load is insufficient, and a heat exchanger which is disposed in a boiler feeding system common to the main boiler and the back-up boiler and which receives excess steam or condensed water as discharged from the heat load and heats feed water, a method of operating a power plant and apparatus therefor comprising a circulating pipe for connecting a steam generating portion of the back-up boiler and the heat exchanger and for causing boiler feed water to flow from the back-up boiler back to the heat exchanger even during shutdown of the back-up boiler, and valve means disposed in the circulating pipe and adapted to be shut when a condition of t