Abstract: A disk reproducing apparatus with a plurality of disks arrayed and held therein for selecting a desired disk from the arrayed disks and reproducing the disk.

Abstract: A toner exhibiting good fixing performances even at a high process speed is formed of a binder resin, a wax and a colorant. The toner is especially characterized by visco-elastic properties including: (a) a storage modulus G' (160.degree. C.) of 8.0.times.10.sup.2 -1.2.times.10.sup.4 Pa at 160.degree. C., (b) a loss modulus G" (160.degree. C.) of 4.0.times.10.sup.2 -6.0.times.10.sup.3 Pa at 160.degree. C., (c) a loss tangent tan.delta. (160.degree. C.)=G" (160.degree. C.)/G' (160.degree. C.) of 0.1-1.5 at 160.degree. C., (d) a storage modulus G' (190.degree. C.) of 6.0.times.10.sup.2 -1.6.times.10.sup.4 Pa at 190.degree. C., (e) a loss modulus G" (190.degree. C.) of 2.0.times.10.sup.2 -4.0.times.10.sup.3 Pa at 190.degree. C., (f) a yloss tangent tan.delta. (190.degree. C.)=G" (190.degree. C.)/G' (190.degree. C.) of 0.05-1.2 at 190.degree. C., (g) G' (160.degree. C.)/G' (190.degree. C.)=0.5-2.0, and (h) tan.delta. (160.degree. C.)>tan.delta. (190.degree. C.).

Abstract: A magnetic toner which is excellent in the low temperature fixability and the anti-offset properties is disclosed. The binder resin of the toner comprises a non-crosslinked styrene polymer, a non-crosslinked styrene copolymer or a mixture of these, and a polyolefin, wherein;the binder resin has, in its molecular weight distribution pattern measured by gel permeation chromatography (GPC), at least one maximal point (peak) in each region of a low molecular weight of from 5,000 to 20,000 and of a high molecular weight of from 200,00 to 1,000,000, where a height H1 of a maximum peak in the low molecular weight region, a height H3 of a maximum peak in the high molecular weight region and a height H2 of a minimal point between both of said peaks satisfy the relationship H1:H2:H3 of 3-25:1:1.5-12; and has a weight average molecular weight Mw and a number average molecular weight Mn in a value Mw/Mn of from 15 to 80.

Abstract: A developer for developing an electrostatic image is constituted by an insulating magnetic toner, inorganic fine powder and a flowability-improving agent having a BET specific surface area of at least 30 m.sup.2 /g. The insulating magnetic toner has a weight-average particle size (t-D.sub.4) of 4-14 .mu.m, a number-average particle size (t-D.sub.1) of 1-10 .mu.m, and a ratio (t-D.sub.4)/(t-D.sub.1) of 1.01-2. The inorganic fine powder has a weight-average particle size (m-D.sub.4) of 0.6-5 .mu.m, a number-average particle size (m-D.sub.1) of 0.5-4 .mu.m, and a ratio (m-D.sub.4)/(m-D.sub.1) which is in the range of 1.0-2.4 and is equal to or larger than the ratio (t-D.sub.4)/(t-D.sub.1). The inorganic fine powder is contained in an amount which is 2-8 times that of the flowability-improving agent by weight. The developer is able to retain stable developing performances by effecting suppressing preferential consumption of a particular particle size fraction in a long term of successive copying.

Abstract: The present invention relates to a method for sintering an iron scrap in a process for producing a sintered ore which is used as a raw material in ironmaking in a blast furnace. Zn contained in the iron scrap is removed in the step of sintering to enable a light-weight iron scrap to be used in a large quantity in the blast furnace and, at the same time, to enhance the yield of sintered ore in the step of sintering.In the production of a sintered ore as a raw material for use in a blast furnace by using a Dweight-Lloyd sintering machine, a mixture obtained by mixing a fine debris of an iron scrap with a raw material for a sintered ore is placed on a pallet to produce a scrap-bearing sintered ore. The mixture may be incorporated in a packed bed in its entirety, in its upper bed alone or in its lower bed alone. The iron scrap is fixed to the sintered ore and used as a material for use in a blast furnace.

Abstract: A toner for developing an electrostatic image is composed by a binder resin, and a magnetic material and/or a colorant. The binder resin (a) comprises a styrene resin polymerized in the presence of a poly-functional polymerization initiator, (b) provides a molecular weight distribution on a GPC chromatogram showing a maximum (P1) in a molecular weight range of 3.5.times.10.sup.3 -5.times.10.sup.4 and a maximum (P2) or shoulder in a molecular weight range of at least 1.times.10.sup.5, and (c) contains 15 wt. % or less of a resin component in a molecular weight range of at most 3.times.10.sup.3. Further the toner contains at most 100 ppm of styrene and benzaldehyde.

Abstract: The present invention relates to an electrophotographic image forming method characterized in using a photosensitive member having an organic photoconductive layer and fluorine-containing resin particles in the surface, a contact charging means being in contact with the photosensitive member to electrostatically charge it, a contact transfer means being in contact with the photosensitive member to transfer the developed image to the transfer medium;wherein the toner to be used for developing the latent image is a magnetic toner comprising at least a magnetic material and a binder resin, wherein the binder resin contains a polymer synthesized from vinyl monomer in the presence of an aromatic organic solvent in an amount of 50 parts by weight or more on the basis of 100 parts of the binder resin, and the amount of the residual aromatic organic solvent in the magnetic toner is 500 ppm by weight or less.

Abstract: A process for producing a toner comprises the steps of mixing toner particles having a weight average particle diameter of from 2 to 15 .mu.m, with an external additive to prepare a toner, and passing the resulting toner through a sieve. The sieve has a wire cloth of twill weave that satisfies the following condition:0.052.ltoreq.d mm .ltoreq.0.208100.ltoreq.W .mu.m .ltoreq.1807.3.times.10.sup.-4 .ltoreq.d mm / W .mu.m.ltoreq.9.1.times.10.sup.-4wherein d represents average diameter of the wire used in the sieve, and W represents an aperture size of the sieve.

Abstract: The present invention provides a developer which is comprised of the magnetic toner having the specific binder resin component and low-molecular weight wax and the additives of the fine silica powder, metal oxide powder and fluorine-containing fine resin powder which are used in combination in given amounts. Hence, it is possible to prevent the melt-adhesion of toner to the surfaces of the contact charging member and contact transfer member, to cause no faulty images and to obtain images with the enjoyment of superior low-temperature fixing performance and anti-offset properties, even when copies are taken on a large number of sheets using the image forming method having contact charging and contact transfer systems.

Abstract: A wearing article with a taping function for wearing on a human body in pressed relation to a surface of the human body, has a heavily-stretchable portion which has an excellent tightening force and is adapted to be held against a required portion of the human body so as to extend generally along muscle fibers over a region from a tendon to a central portion of the muscle. The remainder of the wearing article is defined by an easily-stretchable portion. With this arrangement, by merely wearing this wearing article on the required portion of the body, the heavily-stretchable portion tightens only a required portion of the body to support the central portion of the relevant muscle, thereby easily achieving a taping function.

Abstract: A magnetic toner is constituted by at least a binder resin and a magnetic iron oxide. The magnetic iron oxide is characterized by having an Fe(II) content of 18.5-24.1 wt. %, and shows a BET specific surface area of S (m.sup.2 /g) and an X-ray diffraction pattern giving a half-value width W (deg.) of a diffraction peak corresponding to 311 plane of the magnetic iron oxide in spinel structure, the values S and W satisfying: 4.5.times.10.sup.-3 S+0.130.ltoreq.W.ltoreq.4.5.times.10.sup.-3 S+0.160, and 4.5.ltoreq.S.ltoreq.11.0. Alternatively, the magnetic iron oxide is characterized by having a number-average particle size D satisfying a relationship with W of: -0.08D+0.180.ltoreq.W.ltoreq.-0.08D+0.212, and 0.10.ltoreq.D.ltoreq.0.45. The relationship between W and S or D indicates a good crystallinity of the magnetic iron oxide which provides the magnetic toner with a stable performance for a long period of time. The magnetic iron oxide can be obtained through a heating treatment at a temperature of 130.degree.

Abstract: A composite elastic filament with a rough surface, consisting of a sheath component composed of a fiber-forming thermoplastic polymer, such as polyamide, polyester or polyolefin, and a core component composed of a fiber-forming elastomer, such as polyurethane or polyester elastomer, wherein the core/sheath conjugate ratio ranges from 1/1 to 100/1 by cross-sectional area and the core portion has a smooth peripheral surface uniformly extending in the direction of the filament axis while the sheath portion covering the core portion has numerous ridges rising along the circumference of the filament and closely spaced along the length of the filament. This filament can be readily produced by the melt conjugate spinning of the core and sheath components at the above-specified conjugate ratio, followed by drawing 1.1- to 10.0-fold and relaxation.

Abstract: A potentially elastic composite filament, preferably a core-sheath composite filament composed of a polyurethane as the core and a polyester as the sheath, wherein the ratio of a polyurethane component having allophanate cross-linkages to a linear polyester component readily soluble in water or an aqueous alkali solution ranges from 1/1 to 90/1 and the polyester component is exposed on the surface of the filament in its cross-section. Although the core component has a high tensile strength and a large elongation at break, these properties are controlled by the sheath component. Therefore, this filament can be formed into a textile structure with good workability similar to that of ordinary synthetic fibers, and the obtained structure develops characteristics as an elastic polyurethane filament when treated with water or alkali.

Abstract: A wearing article with a tapering function for wearing on a human body in pressed relation to a surface of the human body, has a heavily-stretchable portion which has an excellent tightening force and is adapted to be held against a required portion of the human body so as to extend generally along muscle fibers over a region from a tendon to a central portion of the muscle. The remainder of the wearing article is defined by an easily-stretchable portion. With this arrangement, by merely wearing this wearing article on the required portion of the body, the heavily-stretchable portion tightens only a required portion of the body to support the central portion of the relevant muscle, thereby easily achieving a taping function.

Abstract: A sintering method, which includes igniting a layer of raw materials and providing a downwardly directed air suction is improved by applying a magnetic field to the materials for which a predetermined amount of sintering has been completed in the upper region of the layer of raw materials. The sintering is continued while a magnetic floating force is applied to such sintered cakes. An apparatus for carrying out the method is provided.

Abstract: A composite elastic filament yarn having excellent heat resistance is produced by conducting conjugate-spinning, in a core-sheath arrangement, preferably a concentric core-sheath arrangement, of a polyurethane, as a core component, which is crosslinked by a polyisocyanate at a crosslink density (Y) of 15 .eta.mol/g or more to thereby have improved heat resistance, and a non-polyurethane thermoplastic elastomer, as a sheath component, particularly a polyester elastomer, a polyamide elastomer or polystyrene elastomer, under such conditions that the core to sheath conjugate ratio (X) is in the range of from 3/1 to 100/1, and that the relationship of Y.gtoreq.-X+35 is satisfied. This elastic yarn is free from tackiness and can be wound at a high speed. Further, the yarn is easy to unwind and its workability is excellent. This elastic yarn is suited for use in various fields, such as socks, tricots, panty hose, swimsuits and foundations.

Abstract: A cassette insertion device comprising a holder for receiving a tape cassette, the holder having an upper inner surface with a first projection thereon for contacting an upper surface of the tape cassette and a lower inner surface having a second projection adapted to engage a pawl of the tape cassette to unlock a slider of the tape cassette, the first and second projections being laterally separated by a distance greater than or equal to the length of a lower projection formed on a lower surface of the tape cassette.

Abstract: In an apparatus for feeding a sintering raw mix, a plurality of bars downwardly sloped in a falling direction of the sintering raw mix onto a pallet of a sintering apparatus is provided so that the falling direction of the raw mix is opposite to the advancing direction of the pallet, a screen is formed by rotatably supporting the bars, and the upper ends of the bars are connected to a rotating drive(s).

Abstract: An apparatus comprising a parison forming assembly and a final shaping assembly each having a mold, and a reheating and intermediate forming assembly provided between the two assemblies and having a cover or an intermediate forming mold for enclosing the parison in a confined space, the assemblies being associated with one another for sequential operation. Without prolonging the molding cycle time usually needed for the parison forming assembly and the final shaping assembly, unfinished parisons can be reheated sufficiently.

Abstract: In an apparatus for feeding a sintering raw mix, a plurality of bars downwardly sloped in a falling direction of the sintering raw mix onto a pallet of a sintering apparatus is provided so that the falling direction of the raw mix is opposite to the advancing direction of the pallet, a screen is formed by rotatably supporting the bars, and the upper ends of the bars are connected to a rotating drive(s).