Abstract: A plastic optical fiber cable includes: a bare optical fiber including a core made of a poly(methyl methacrylate) or a copolymer including methyl methacrylate as a major component and a cladding layer including, at least in the outermost layer, a layer made of a certain fluorine-containing olefin-based resin; and a coating layer provided on the outer surface thereof. The coating layer includes a protective coating layer, a light blocking coating layer, and a functional coating layer, the layers being provided in the order mentioned from inner side. The protective coating layer is made of a certain resin material. The light blocking coating layer is made of a nylon-based resin including, as a major component, nylon 11 or nylon 12, the nylon-based resin containing monomer and oligomer compounds derived from the nylon-based resin in an amount of a certain range.

Abstract: An image display method in which a position of a shot image of the ground surface having been taken from the air is specified three-dimensionally, a photographic area on the ground surface having been shot is obtained by computation, and a shot image is transformed in conformity with the photographic area thereof and thereafter displayed being superposed on a map of geographic information system, and in which landmarks are extracted from a map of a geographic information system and a shot image respectively, and the corresponding landmarks are compared, whereby a parameter for use in computing a photographic area having been shot is compensated.

Abstract: A plastic optical fiber cable includes: a bare optical fiber including a core made of a poly(methyl methacrylate) or a copolymer including methyl methacrylate as a major component and a cladding layer including, at least in the outermost layer, a layer made of a certain fluorine-containing olefin-based resin; and a coating layer provided on the outer surface thereof. The coating layer includes a protective coating layer, a light blocking coating layer, and a functional coating layer, the layers being provided in the order mentioned from inner side. The protective coating layer is made of a certain resin material. The light blocking coating layer is made of a nylon-based resin including, as a major component, nylon 11 or nylon 12, the nylon-based resin containing monomer and oligomer compounds derived from the nylon-based resin in an amount of a certain range.

Abstract: A mobile unit information sharing system with which it is possible by wireless communications and without providing a communications control station to share not only voice data but also position information of multiple mobile stations and business information such as images formed in the course of business and instructions and the like. A base station and multiple mobile stations each, by a time-sharing synchronous wireless modem device, acquire position information for themselves and time information via a GPS antenna and transmit their station position information via a wireless installation using a wireless frequency common to all the stations and with timing determined, on the basis of the acquired time information, so that their station position information does not collide with position information transmissions from other stations.

Abstract: An image display method in which a position of a shot image of the ground surface having been taken from the air is specified three-dimensionally, a photographic area on the ground surface having been shot is obtained by computation, and a shot image is transformed in conformity with the photographic area thereof and thereafter displayed being superposed on a map of geographic information system, and in which landmarks are extracted from a map of a geographic information system and a shot image respectively, and the corresponding landmarks are compared, whereby a parameter for use in computing a photographic area having been shot is compensated.

Abstract: An annular endless belt includes, as an outermost later thereof, a release layer containing a fluororesin and having an outer surface formed of a molded surface; a support layer as an innermost layer thereof; and an elastic layer disposed between the outermost layer and the innermost layer. A method of manufacturing the endless belt includes the steps of coating a release layer on an inner circumferential surface of an annular molding die; baking the release layer at a given temperature; coating an elastic layer; baking the elastic layer at a given temperature; coating a support layer; baking the support layer at a given temperature, and separating the endless belt from the molding die.

Abstract: A release layer, which contains fluoropolymers is applied on a die surface of a shaping die, and is baked. An elastic layer is applied onto the external surface of the release layer and is baked. A supporting layer containing heat-resistant synthetic resin is applied onto the external surface of the elastic layer, and is dried. The dried supporting layer is polished to remove the unevenness, and the supporting layer is baked. The release layer, the elastic layer and the supporting layer are turned inside out to be removed from the die surface. The evenness of the fixing belt is improved, and the pressure unevenness is reduced.

Abstract: An annular endless belt (1), comprising a release layer (2) formed of fluororesin and having an outer surface formed of a molded surface disposed as an outermost layer, a support layer (6) disposed as an innermost layer, and an elastic layer (4) disposed between the outermost layer and the innermost layer, whereby the fluororesin layer as the release layer can be formed by coating on the outer surface of the endless belt without hardening the elastic layer thereof used as the fixing belt of a color copying machine.

Abstract: An electrochromic device having two electrochromic layers respectively formed on oppositely arranged two electrodes and containing an electrolyte such as a solution of an alkali metal salt in an organic solvent which fills up the gap between the two electrodes. The electrochromic layers are formed of an electrochromic material which can alternately and stably exist in three different oxidation states and assumes three different colors in its respective oxidation states such that there is a clear contrast between the color of this material in its normal or intermediate oxidation state and a composite color given by superposition of the color in the highest oxidation state on the color in the lowest oxidation state. Prussian blue is a preferred example of such an electrochromic material, on condition that an adequate amount of water be present in the electrolyte solution or, alternatively, that the Prussian blue layers be pretreated to substitute alkali metal cation for Fe.sup.