摘要:
There is provided alloy steel powders for the injection molding use manufactured by the atomizing method which are characterized by their substantially spherical particle shape and average particle diameters of 20 microns or less, a compound for the injection molding use which contains the alloy steel powders and one or more organic binders, a process for manufacturing sintered materials in performing injection molding of compound and subsequently debinding the obtained injection molded part followed by sintering the debound part, at least the first stage of the sintering step is performed in reduced pressure atmosphere, and the sintered material having a relative density ratio of 92% or more.
摘要:
An improved method for manufacturing liquid crystal device is described. The method comprises mating a pair of substrates with an inner space therebetween, sealing the periphery of the mated substrates except for inlet ports, placing the mated substrates in a vacuum chamber, evacuating air from the inner space between the substrates by virtue of the differential pressure between the inner space and the vacuum chamber, pouring a liquid crystal material into the inlet ports, introducing the liquid crystal material into the inner space by elevating the pressure of the vacuum chamber at an elevated temperature, cooling the liquid crystal material, and closing the inlet ports by means of a sealing member. The removal of the superfluous portion of the liquid crystal material is done only after closing of the inlet ports.
摘要:
An electrophotographic copier of the type moving an original document and optics relative to each other to expose a photoconductive element imagewise via the optics to thereby form a latent image on the photoconductive element, developing the latent image to produce a visible image, and transferring the visible image to a paper sheet. The size of an original document which is positioned on a glass platen with one corner portion of the glass platen as a reference is sensed, and a lens included in the optics is displaced in response to the document size sensed. A paper sheet is transported with its center with respect to the widthwise direction registered aligned with the center of an image which is provided on the photoconductive element.
摘要:
A copolymer of lactic acid and glycolic acid which has a weight-average molecular weight of not less than about 5000 and a dispersity of about 1.5 to 2 is advantageously used as a biodegradable polymer for medical preparation.
摘要:
A process for treating and recovering pickling waste liquids used for the pickling of stainless steel such as nitric-hydrofluoric acid, nitric acid, hydrochloric acid and, sulfuric acid is disclosed, which comprises recovering the nitric-hydrofluoric acid and the iron oxide or metallic ion from the waste liquids of nitric-hydrofluoric acid and nitric acid by two solvent extraction processes and recovering the Cr and Ni containing ferrite from the waste liquids of sulfuric acid or hydrochloric acid by a ferrite formation process. When the waste acid is sulfuric acid, gypsum of a high purity can be obtained.
摘要:
A copying apparatus capable of performing a first preset number of copying operations corresponding to a first original document in a successive copying operation mode, and performing a second preset number of copying operations corresponding to a second original document in an intruded copying operation mode includes preset number display elements for indicating a first and second preset numbers, first counter for counting a number of copying operations, a copy number display element for indicating a value counted by the first counting means, a second counter for counting a discharged copy paper after the completion of a copying operation, and a detector for detecting a jam of the copy paper. The counted value of the first counter is revised so as to be equal to the counted value of the second counter when a copy paper jam occurs.
摘要:
A copy paper feeding device for a copying apparatus includes a plurality of cassettes which are capable of storing copy paper sheets and a feeder which respectively corresponds to each of the cassettes. Each feeder is selectively driven so as to feed the copy paper sheets in the case where the cassettes store copy paper sheets having different sizes and each feeder is driven in a predetermined order so as to feed the copy paper sheets from one cassette until the cassette is empty and then successively feed the copy paper sheets from the remaining cassette in the case where the cassettes store copy paper sheets having the same size. The copy paper feeding device includes a selector for selecting which feeder is to be driven.
摘要:
An electrostatic copying apparatus wherein a stationary original document image is projected onto a photosensitive member during movement of an optical device for exposing, and an electrostatic latent image formed on the photosensitive member is transferred onto a copy sheet and is fixed, comprising (a) a jam detecting means for immediately detecting a copy sheet being jammed on a transport path; and (b) a cleaning device for removing residual toner particles remaining on the photosensitive member by means of magnetic force and for storing the removed toner particles after transferring operation. According to this invention, an occurrence of jam is detected immediately, and thus a fault or an accident of the electrostatic copying apparatus due to jam is prevented from expanding.
摘要:
An operation lever mechanism for a tape player which comprises an array of operation levers including a play-operation lever for advancing a head plate alone, a stop-operation lever for retiring the head plate, a fast forward-operation lever and a rewind-operation lever, engaging portions provided on the operation levers, respectively; an operating member provided between the operation levers and adapted to be operated, upon depression of any one of the operation levers, through engagement thereof with the depressed operation lever to lock said lever in the depressed position and restore the operation lever adjacent said depressed lever which has been depressed previously; an interlocking member provided in association with the stop-operation lever for an ejecting operation and formed with a projected portion engageable with a salient portion of said stop-operation lever, said operating member having an operation portion for displacing the projected portion of the interlocking member out of the actuation area of the salient portion of the stop-operation lever. With the arrangement, upon depression of any one of the operation levers, the lever previously depressed is released and the lever now depressed is locked in the position and the stop-operation lever can act two ways, namely to stop the operation rendered by the other operation lever and to effect a cassette ejecting operation in cooperation with the interlocking member engaged therewith when any other operation lever is not in an operative condition.
摘要:
A fixing and heating device for an electrostatic copying apparatus includes a fixing roller which (a) remains stationary at least until a toner is softened, (b) is driven at a low speed to even the surface temperature of the fixing roller when the surface temperature is lower than a temperature suitable for fixing, and is equal to the temperature suitable for fixing except during a fixing operation, and (c) is driven at a speed suitable for fixing when the surface temperature is suitable for fixing during the fixing operation.