Abstract: A power supply system includes a plurality of electric products; a power generation apparatus capable of varying an amount of power generation; and a power control apparatus for controlling power supply from the power generation apparatus to the plurality of electric products. Each of the plurality of electric products is structured to be capable of outputting a first power request signal for requesting a desired amount of power. The power control apparatus receives the plurality of first power request signals respectively from the plurality of electric products, generates a second power request signal for requesting an amount of power which is determined in accordance with a total amount of power requested by the plurality of first power request signals, and outputs the second power request signal to the power generation apparatus.

Abstract: Disclosed is a novel anti-reflective film used for reducing the adverse influences of stray light within an optical instrument such as photographic cameras by attaching onto the inner walls of the instrument. The anti-reflective film consists of a substrate film of a synthetic resin and an anti-reflective coating layer formed on one surface of the substrate film by coating with a coating composition comprising (a) a synthetic resin as a binder to form the matrix phase of the coating layer, (b) particles of a synthetic resin having an average particle diameter in the range from 15 to 50 .mu.m dispersed in the matrix phase, and (c) particles of carbon having an average particle diameter not exceeding 2 .mu.m dispersed in the matrix phase.

Abstract: Disclosed is a method of manufacturing a silver halide emulsion, the method comprising the step of ultrafiltrating and electrodialyzing a silver halide emulsion containing silver halide grains and gelatin having an average molecular weight of 500 to 70,000, by means of an ultrafiltration unit having an ultrafiltration membrane, whereby the emulsion is desalted and concentrated.

Abstract: A camshaft made of cast iron containing at least one element selected from the group consisting of Bi, Te, Se, As, Sb and Sn in a total amount of 0.0001 to 0.1 weight %, preferably, 0.001 to 0.1 weight %. The cast iron may further contain at least one elements selected from the group consisting of Ni, Cu and Co in an amount of 0.2 to 5.0 weight %. Furthermore, in the camshaft of the present invention, a carbide area ratio at the sliding surface of the cam lobe portion is not less than 40%, the chilled carbide has an average grain diameter of not more than 15 .mu.m, and the sliding surface of the cam lobe portion has a hardness of not less than HRC 53.

Abstract: A manuscript display apparatus includes a bow-shaped main body having a light emitting body housed therein translucent diffusion plate arranged on top of the main body to diffuse light emitted from the light emitting body, a support portion rotatably supported with respect to the main body, and a half mirror supported at the tip end of the support portion. When the manuscript display apparatus is to be used, a manuscript sheet is placed on top of the diffusion plate in such a way that its surface on which a manuscript is written faces down to th diffusion plate. The light emitted from the light emitting body is diffused by the diffusion plate and uniformly illuminate the manuscript sheet from the underside thereof. The light that passes through the manuscript sheet is reflected off the half mirror and therefor the manuscript is displayed as a virtual image. Because the virtual image is reversed at the half mirror, the virtual image displays the manuscript of the manuscript sheet in its original form.

Abstract: A spiro-oxazine compound represented by the following general formula (A) or (A') is a photochromic compound having an excellent fatigue resistance to repetition of coloration and decoloration and an abundance of hues: ##STR1## wherein the .alpha. ring is a ring selected from a 5-membered ring having one N atom, which may be connected to a benzene ring or naphthalene ring, and a 6-membered ring having one N atom, with the proviso that the N atom in the e ring is bonded to a C.sub.1-20 alkyl or another organic group, X is selected from O, S, Se and N-R.sup.1 (in which R.sup.1 is selected from H, and C.sub.1-20 alkyl and other organic groups), R.sup.2 and R.sup.3 are selected from --OH, amino, C.sub.1-20 alkoxy, halogen, and other groups, and k is an integer of 0 to 2.

Abstract: A camshaft made of cast iron containing at least one element selected from the group consisting of Bi, Te, Se, As, Sb and Sn in a total amount of 0.0001 to 0.1 weight %, preferably, 0.001 to 0.1 weight %. The cast iron may further contain at least one element selected from the group consisting of Ni, Cu and Co, in an amount of 0.2 to 5.0 weight %. Furthermore, in the camshaft of the present invention, a carbide area ratio at the sliding surface of the cam lobe portion is not less than 40%, the chilled carbide has an average grain diameter of not more than 15 .mu.m, and the sliding surface of the cam lobe portion has a hardness of not less than HRC 53.

Abstract: A microscope comprises a cantilever having a distal end equipped with an electrically conductive probe allowing current to flow and having a fine tip whose voltage is controllable, a position control mechanism for controlling position of a sample with respect to a base end of the cantilever, a small displacement measuring mechanism for measuring a deflection amount of the cantilever, and a deflection control mechanism for controlling deflection of the cantilever so as to adjust a distance between the fine tip of the probe and the sample.

Abstract: A spiro-oxazine compound represented by the following general formula (A) or (A') is a photochromic compound having an excellent fatigue resistance to repetition of coloration and decoloration and an abundance of hues: ##STR1## wherein the .alpha. ring is a ring selected from a 5-membered ring having one N atom, which may be connected to a benzene ring or naphthalene ring, and a 6-membered ring having one N atom, with the proviso that the N atom in the .alpha.ring is bonded to a C.sub.1-20 alkyl or another organic group, X is selected from O, S, Se and N--R.sup.1 (in which R.sup.1 is selected from H, and C.sub.1-20 alkyl and other organic groups), R.sup.2 and R.sup.3 are selected from --OH, amino, C.sub.1-20 alkoxy, halogen, and other groups, and k is an integer of 0 to 2.

Abstract: A composition for forming a photosensitive coating is disclosed which includes:(a) a photosensitive agent which is an o-naphthoquinone diazide compound,(b) a polyvinylpyrrolidone compound, and(c) a stannic halide, wherein the o-naphthoquinone diazide compound is present in an amount of 5-50 parts by weight per 100 parts by weight of the polyvinylpyrrolidone compound and the stannic halide is present in an amount of 4-40% based on the weight of the o-naphthoquinone diazide compound.

Abstract: A matted film is disclosed which includes a synthetic resin film, and a mat layer provided over at least one surface of the film and containing a matting agent which is a mixture of 50-95% by weight of an organic filler having an average particle size of 10 .mu.m or less and 5-50% by weight of an inorganic filler having an average particle size of 10 .mu.m and selected from sericite, calcined sericite, kaolin minerals, calcined kaolin minerals, pyrophyllite, calcined pyrophyllite and mixtures thereof.

Abstract: A fluidized coating apparatus wherein a rotatable perforated disk 2 is provided at the lower portion of a processing cylinder 1 and perforated disk opening portions 3 are provided in the vicinity of the outer peripheral edge of this perforated disk 2. The ratio of the total opening area of the perforated disk opening portions 3 to an area of an annular slit 8 formed between the perforated disk 2 and the inner wall of the processing cylinder 1 is within the range from 0.2 to 0.6. Each of the perforated disk opening portions 3 is provided with a cover and side walls so that gas is blown out outwardly in the radial direction or obliquely backward with respect to a rotating direction within 30.degree. to the radial direction of the perforated disk.

Abstract: A composite film is disclosed which includes (a) a synthetic resin substrate film having a roughened surface, and (b) a thin, slippery, electrically conducting layer coated over the roughened surface. The conducting layer contains 2-10% by weight of carbon black, 10-40% by weight of a fluorine resin, 25-78% by weight of a hardened binder resin selected from hardened amino resins, hardened phenol resins and mixtures thereof, and 7-25% by weight of a modifying resin selected from polyurethane resins, acrylic resins, polyester resins and mixtures thereof, the total amount of the hardened binder resin and the modifying resin being 50-85% by weight.

Abstract: A chemical mat film having good writability and printability is disclosed which includes a transparent film, a chemical mat layer provided on one or both sides of the transparent film and containing finely divided solid particles which provide surface roughness, and an overcoat layer formed of a polymeric material and provided over the surface of the chemical mat layer, the overcoat layer having a surface roughness which is substantially coincident with that of the chemical mat layer. The chemical mat film may be used as a substrate of a photosensitive film for supporting a photosensitive layer thereon.

Abstract: A novel spiro-oxazine compound of the formula (A): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 independently represent hydrogen, (C1 or 2) alkyl, halogenated (C1 or 2) alkyl, (C1 or 2) alkoxy, halogen or nitro, R is unsubstituted or substituted phenyl or naphthyl, and n is 1 to 5.The spiro-oxazine compound is prepared by reacting a precursor of the spiro-oxazine compound of the formula (A), which has a substituent of the formula: --(CH.sub.2).sub.n R in the nitrogen atom of the indoline nucleus, with an .alpha.-nitroso-.beta.-naphthol. The spiro-oxazine compound is valuable as a photochromic material and exhibits enhanced fatigue resistance in photocolorability.

Abstract: A process for producing a hydrocarbon fluoride at a high selectivity with minimum formation of by-products is disclosed, which comprises reacting a hydrogen-containing hydrocarbon halide with anhydrous hydrogen fluoride in a liquid phase in the presence of a reaction product of (i) at least one of (a) an oxygen-containing compound selected from the group consisting of H.sub.2 O, H.sub.2 O.sub.2 and an oxygen-containing organic compound, and (b) a nitrogen-containing compound selected from the group consisting of NH.sub.3 and a nitrogen-containing organic compound, (ii) a tin compound selected from the group consisting of a stannic halide, a stannic oxyhalide and an organotin compound, and (iii) anhydrous hydrogen fluoride.

Abstract: A clean room having an air-conditioner unit built in the shell of an airtight main room in such a manner as to form part of the internal wall of the main room. This air-conditioner unit is provided with an external casing of a small thickness and this external casing is provided with an air inlet and an air outlet which is fitted with a high-performance filter. The casing has an air blower disposed therein. The airtight main room is mainly formed of a plurality of gate-shaped frames disposed in parallel as regularly spaced on a floor surface. The air-conditioner unit and a control unit are disposed in the spaces intervening between the adjacent vertical members of the gate-shaped frames. The internal wall of the main room is formed of wall panels and the front panel of the casing of the air-conditioner unit.

Abstract: A method for producing an extrusion die which is employed to extrude a ceramic honeycomb structure for use as a catalyst carrier or support for purifying exhaust gases of an automobile or the like, is disclosed.

Abstract: A mechanical filter having as its major part at least one longitudinal vibration mode vibrator, includes a piezoelectric ceramic plate an electrode pair attached to top and bottom surfaces thereof. The piezoelectric ceramic plate is polarized in its thickness direction to form at least two polarized regions, the polarization directions being different from each other.

Abstract: An extrusion die for extruding a honeycomb structure having a thick outer peripheral wall without generating any distortion or deformation therein, comprises a die body provided with a plurality of disconnected feed passageways and interconnected grid-shaped extrusion slots, an annular die mask which is closely contacted with the outer peripheral portion of the outlet face of the die body. In the outlet face of the die body, along the inner peripheral wall of the die mask, an annular groove of which depth is smaller than that of the extrusion slots is formed so as to open in the extruding direction.