Abstract: The electrostatic information recording medium according to the present invention comprises an electrode layer and an electric charge retaining layer. By improving the laminating method of electric charge retaining layer or by improving the layer arrangement or by converting electrostatic information to the visible information or position information, high information retaining property can be obtained and the accumulated electrostatic information can be maintained for long period.In the electrostatic information recording method according to the present invention, an electrostatic information recording medium is placed face-to-face to a photosensitive member having photoconductive layer on an electrode. The image exposure is performed by applying voltage between two electrodes, and the electrostatic information corresponding to the image exposure is recorded on the electrostatic information recording medium.

Abstract: In a non-volatile semiconductor memory device, predetermined number of memory cells each comprising a non-volatile semiconductor memory element of a floating gate type transistor are connected to a first bit line in parallel, and the first bit line is connected to one of the source and drain regions of each thin film transistor while the other of the source and drain regions is connected to a second bit line. The thin film transistor and the floating gate electrode of the floating gate type transistor are formed in the same semiconductor thin film. The thin film transistor is a selection transistor for selectively reading out data stored in said memory cells, and is a sector erasing transistor for selectively erasing data stored in the memory cells.

Abstract: In the information recording an reproducing method and apparatus according to the present invention, picture image information is recorded as an analog quantity or a digital quantity on an information carrying medium in a planar manner at a high density, charge potential is read for outputting electric signals to correspond to the recorded picture image information and then the outputted signals are printed out by means of various display unit or output device, with high quality and high resolution as well as ease processing of the information. The information carrying medium provides a long period of storage of information and enables stored picture image information to be repeatedly reproduced with a picture quality according to need.

Abstract: In a method of molding resin to seal electronic parts, an internal die space defined at least by pots, cull portions, resin passages and cavities when an upper mold section and a lower mold section are closed, is cut off or sealed from the exterior atmosphere. Thereupon the die space is evacuated using a first evacuation by a vacuum source and a second or instantaneous evacuation by an instantaneous evacuation mechanism. The vacuum source for the first evacuation may be an active vacuum pump, while the instantaneous evacuation mechanism may be a vacuum tank that has been previously pumped down, for example. According to this method, it is possible to quickly improve the degree of vacuum in the internal die space by efficiently and reliably discharging air, moisture and gas from the internal die space to the exterior due to a synergistic action of the evacuation and the instantaneous evacuation. Consequently, the formation of voids in resin molded members is prevented.

Abstract: The electrostatic information recording medium according to the present invention comprises an electrode layer and an electric charge retaining layer. By improving the laminating method of electric charge retaining layer or by improving the layer arrangement or by converting electrostatic information to the visible information or position information, high information retaining property can be obtained and the accumulated electrostatic information can be maintained for long period.In the electrostatic information recording method according to the present invention, an electrostatic information recording medium is placed face-to-face to a photosensitive member having photoconductive layer on an electrode. The image exposure is performed by applying voltage between two electrodes, and the electrostatic information corresponding to the image exposure is recorded on the electrostatic information recording medium.

Abstract: A catalyst for dimerizing a lower .alpha.-olefin monomer with an enhanced selectivity comprises a carrier comprising at least one anhydrous potassium compound, preferably a mixture of potassium fluoride with potassium carbonate, and a carbon material; and a catalytic component carried on the carrier and comprising an alkali metal, preferably sodium metal, the catalyst preferably being compression molded into grains.

Abstract: The present invention relates to an electrostatic information recording medium in which a charge retaining layer having high insulating properties is laminated on an electrode, and an electrostatic information recording/reproducing process wherein, while said electrostatic information recording medium is positioned in opposition to a photosensitive member on which a photoconductive layer is laminated, the recording medium is subjected to information exposure with the application of voltage between both electrodes to accumulate electrostatic charges thereon depending upon the dosage of said information exposure, and the electrostatic information thus accumulated is reproduced by potential reading.The present electrostatic information recording medium has an information density as expressed in terms of a high recording capacity of the order of 8.times.10.sup.8 bits/cm.sup.

Abstract: An electrostatic printing method, wherein a photosensitive member has a photoconductive layer formed on a support member with a conductive layer therebetween is placed face to face with a drum of electrostatic information recording medium, which has an insulating layer formed on a cylindrical conductive layer. Voltage is applied between the photosensitive member and the conductive layer of the electrostatic information recording medium drum. Electric charge is accumulated in the shape of an image on the surface of the electrostatic information recording medium drum, by performing image exposure from the direction of the photosensitive member. Recording film is supplied at the same speed as the rotating speed of the drum on contact or non-contact basis with the drum, and toner development is performed by a developing machine which is installed face to face to the drum with the recording film therebetween. A conductive roller may be provided at a position where the recording medium is separated from the drum.

Abstract: In the information recording an reproducing method and apparatus according to the present invention, a piece of picture image information is recorded as an analog quantity or a digital quantity an information carrying medium in a planar manner at a high density, charge potential is read for outputting electric signals to correspond to the recorded picture image information and then the outputted signals are printed out by means of various display unit or output device, with high quality and high resolution as well as ease processing of the information. The information carrying medium provides a long period of storage of information and enables stored picture image information to be repeatedly reproduced with a picture quality according to need.

Abstract: The heat-sensitive stencil sheet of the present invention is a heat-sensitive stencil sheet including a thermoplastic film (3) laminated through an adhesive layer (2) on one surface of a porous base (1). The adhesive layer includes an ionizing-radiation-curable adhesive, and therefore the above porous support (1) and the thermoplastic film (3) can be rapidly and firmly adhered together, and yet printing resistance during printing can be improved simultaneously with the additional excellent effect of making the printed image sharper.

Abstract: A pervaporation method of separating a liquid organic compound mixture at a high speed and efficiency through an aromatic polyimide asymmetric separating membrane produced from an aromatic tetracarboxylic acid component comprising at least 70 molar % of biphenyl or diphenylether tetracarboxylic dianhydride and an aromatic diamine component comprising 85 molar % or more of an aromatic diamine having 2 to 3 benzene ring structure, or 15 molar % or more of 9,10-di(aminophenyl)anthracene, di(aminophenoxy)diphenylsulfone, di(aminophenoxy)biphenyl or di(aminophenoxy)diphenylalkane compounds, or a mixture of 15 to 50 molar % of an aromatic diamine having alone benzene or pyridine ring structure and 50 to 85 molar % of an aromatic diamine having a 2 to 3 benzene ring structure.

Abstract: In a POS system including at least one controller and a plurality of POS terminals, the controller includes a price look-up file formed by a price look-up table and a sum table. When the price look-up table is searched by a price look-up inquiry signal, the sum table is correspondingly accessed by an address information from the price look-up table and the sum table.

Abstract: An electro-optical cell comprises, on an optical path, a pair of electrode base plates and a nematic liquid crystal material having a positive dielectric anisotropy and sandwiched between the electrode base plates, each of which comprises a transparent base plate having an inner surface, an electrode film provided on the inner surface, and a polyimide resin film orientated in one direction and provided on the inner surface over the electrode film, the electrode base plates being mutually disposed on opposite sides of the liquid crystal material with their respective polyimide resin films on their inner sides in mutually facing state with the orientated direction of one polyimide resin film intersecting that of the other as viewed along the optical path. An advantageous feature of this electro-optical cell is that the electrode base plates thereof has durable and heat-resistant orientation which can impart a uniform, initial alignment of ample strength to the liquid crystal.

Abstract: A molded article of plastic having on its surface a cured film of a coating material comprising at least 30% by weight of at least one polyfunctional compound selected from the group consisting of poly-methacryloyloxy compounds having a molecular weight of 250 to 800 and containing at least three methacryloyloxy groups in the molecule and poly-acryloyloxy compounds having a molecular weight of 250 to 800 and containing at least three acryloyloxy groups in the molecule, and optionally 0.01 to 5% by weight of a fluorine-containing surfactant and 0.01 to 5% by weight of a carbonyl compound as photosensitizer has improved surface characteristics, particularly a high surface hardness, a high surface smoothness, high heat resistance, high abrasion resistance and a minimized optical distortion. Said molded article of plastic having improved surface characteristics can be prepared by coating the molded substrate of plastic with said coating material to a thickness of 1 to 50.mu.