Abstract: The control unit for the magnetic tape unit compresses data and writes in a physical block unit in the buffer according to the data write instruction from the host computer or without compressing writes in a logical block unit in the buffer. And, according to the data read instruction from the host computer, the data read from the magnetic tape unit is stored in the buffer and transferred to the host computer. When the read data is an extended format due to compression, the data is expanded before being transferred. When an error occurs in writing data in the magnetic tape unit, information such as the maximum block size and total capacity of data within the buffer is informed to the host computer. In the following data recovery process, the unwritten data within the buffer is recovered in the logical block unit or physical block unit. In the recovery in the logical block unit, when it is the standard format data, it is read as it is and transferred to the host computer.

Abstract: A non-reduction type dielectric ceramic composition, which contains 100 parts by weight of (Ca.sub.1-x Sr.sub.x).sub.m (Zr.sub.1-y Ti.sub.y)O.sub.3 -zMnO.sub.2 -wSiO.sub.2 serving as a main component and 2 to 30 parts by weight of an additive which is a(LiO.sub.1.kappa. -RO)-(1-a)(BO.sub.3/2 -SiO.sub.2), where RO is at least one type of SrO, BaO and CaO, and a is not less than 0.01 nor more than 0.8 in terms of a molar ratio, and satisfies the following relationships in the composition formulas of the above described main component and additive: x, y and m satisfy the following relationships in terms of a molar ratio:x.ltoreq.x.ltoreq.1.00.ltoreq.y.ltoreq.0.20.9.ltoreq.m.ltoreq.1.1and z and w satisfy the following relationships when the amount of (Ca.sub.1-x Sr.sub.x).sub.m (Zr.sub.1-y Ti.sub.y)O.sub.3 is 100% by weight:0.1.ltoreq.z.ltoreq.5% by weight0.3.ltoreq.w.ltoreq.8% byw weight.

Abstract: A non-reduction agent for dielectric ceramics is composed of a(MnO+RO) and (1-a) (BO.sub.3/2 +SiO.sub.2), or of b(LiO.sub.1/2 +RO) and (1-b) (BO.sub.3/2 +SiO.sub.2). Here, R is at least one kind selected from among Mg, Ca, Sr and Ba. In these compositions, a is within a range of 0.01.ltoreq.a.ltoreq.0.90 (Mol ratio), and b is within a range of 0.01.ltoreq.b.ltoreq.0.80 (Mol ratio). These non-reduction agents for dielectric ceramics are added to dielectric ceramic materials containing lead oxide, for example, and used as materials for capacitors. These dielectric ceramics become hard to be reduced even when fired in reducing atmospheres.

Abstract: Parts such as bearings are press-fitted into a workpiece by an automatic system which includes a positioning device for positioning a workpiece, and a pressing device for press-fitting a part into the workpiece which is positioned by the positioning device. The positioning device includes a jig base having a stationary reference surface, a support table movable toward and away from the stationary reference surface, and a pusher unit for pushing the support table to create a gap between an end surface of the workpiece and the stationary reference surface when the workpiece is placed on the support table. The pressing device includes a presser unit including a presser rod for holding the part thereon, the presser unit being movable toward and away from the support table, and an actuator for pressing the end surface of the workpiece against the stationary reference surface to position the workpiece before the part is press-fitted into the workpiece by the presser rod.

Abstract: A dielectric paste for fabrication of multilayer ceramic substrates containing capacitive circuits. The paste comprises a dielectric powder composed of a dielectric material and a vitreous binder suspended in an organic vehicle. The dielectric material consists essentially of a composition expressed by the general formula:{(Ba.sub.1-x-y-z Sr.sub.x Ca.sub.y Mg.sub.z)O}.sub.m .multidot.(Ti.sub.1-u Zr.sub.u)O.sub.2wherein x, y, z, u and m take values within the following respective ranges: 0.ltoreq.x<0.30, 0.ltoreq.y<0.30, 0.ltoreq.z<0.05, 0.ltoreq.u<0.25, 1.ltoreq.m<1.03, and the vitreous binder consists essentially of a composition expressed by the general formula:.alpha.Li.sub.2 O.multidot..beta.BaO.multidot..gamma.B.sub.2 O.sub.3 .multidot.(1-.alpha.-.beta.-.gamma.)SiO.sub.2wherein .alpha., .beta. and .gamma. are molar ratios of the respective ingredients and take values within the following respective ranges: 0.ltoreq..alpha.<0.25, 0.1.ltoreq..beta.<0.5, 0.1<.gamma.<0.5, and 0.

Abstract: A dielectric ceramic composition consists essentially of a basic composition of a ternary system, Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3 -PbTiO.sub.3 -PbZrO.sub.3, and 0.05 to 6.5 wt % of an antireducing agent incorporated therein. The basic composition comprises a main component represented by the general formula: xPb(Mg.sub.1/2 ; W.sub.1/2)O.sub.3 -yPbTiO.sub.3 -zPbZrO.sub.3 wherein x, y and z are mole percentages of the respective components, and 0.3 to 2.0 wt % of ZnO contained therein. The main component has a composition falling within the area of a polygen ABCD defined by points A(52.0, 44.0, 4.0), B(47.0, 38.3, 15.0), C(44.0, 40.0, 16.0), D(49.0, 46.0, 5.0) in the attached figure. The antireducing agent has a composition expressed by the general formula:.alpha.Li.sub.2 O+.beta.RO+.gamma.B.sub.2 O.sub.3 +(1-.alpha.-.beta.-.gamma.)SiO.sub.2wherein RO is at least one oxide selected from the group consisting of BaO, CaO, SrO and MgO, .alpha., .beta. and .gamma.

Abstract: A monolithic ceramic capacitor which comprises a laminate composed of a plurality of dielectric ceramic layers and internal electrode layers provided between said dielectric ceramic layers, and external electrodes provided at both ends of said laminate and electrically connected to said internal electrode layers, said dielectric ceramic layer being a dielectric ceramic containing lead oxide and a reduction inhibitor and said internal electrode layer being copper or a copper alloy.

Abstract: A non-reducing dielectric ceramic composition consists essentially of a basic composition expressed by the general formula: xPb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 --yPb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 --zPbTiO.sub.3 where x, y and z are percentages by weight of the respective component and take values within the following respective ranges 98.5.ltoreq.x.ltoreq.59.5, 1.0.ltoreq.y.ltoreq.40.0, 0.5.ltoreq.z.ltoreq.10.0,and an anti-reducing agent incorporated therein and expressed by the general formula: aLi.sub.2 O--bRO--cB.sub.2 O.sub.3 +(1--a--b--c)SiO.sub.2 where R is at least one element selected from the group consisting of Mg, Ca, Sr and Ba, a, b, and c are molar ratios of the respective component and take values within the following respective ranges: 0.ltoreq.a.ltoreq.0.2, 0.1.ltoreq.b.ltoreq.0.55, 0.ltoreq.c.ltoreq.0.4.

Abstract: A method of operating a flash smelting furnace which includes a reaction shaft, a concentrate burner disposed at the top of the reaction shaft, a settler disposed with one end thereof connected to the lower part of the reaction shaft, an uptake disposed as connected to the other end of the settler, and at least one lance pipe disposed through the ceiling of the settler between the reaction shaft and the uptake and adapted to permit forced supply of at least powdery raw materials and a reaction gas into the melt in the settler includes the steps of blowing the powdery raw materials containing only a small amount of incombustible substances and the reaction gas into the reaction shaft through the concentrate burner, blowing powdery raw materials containing at least incombustible substances through the lance pipe, and employing means capable of at least retaining the heat of the melt.

Abstract: A circuit substrate (1) comprises a ceramic laminated structure (10) which has a plurality of ceramic layers (2-7) including ceramic layers (3-6) having cavities (44-49). Chip-like electronic components such as a laminated ceramic capacitor (26, 27) and a resistor (28) are received in the cavities. The chip-like electronic components are formed with external terminal electrodes (29-34) respectively. Conductors (15-20) are formed in through holes (35-43) provided in the ceramic layers and interfaces between adjacent pairs of the ceramic layers, to be connected to the external terminal electrodes. The external terminal electrodes are prepared from metal which is mainly composed of at least one of nickel, copper and palladium, and the conductors are prepared from metal which is mainly composed of copper.

Abstract: A flash smelting furnace which comprises a reaction shaft, a concentrate combustion device disposed at the top of the furnace shaft, a settler disposed with one end thereof connected to the lower part of the reaction shaft, an uptake disposed as connected to the other end of the settler and at least one lance pipe extending through the ceiling of the settler between the reaction shaft and the uptake and adapted to blow at least powdery raw materials and a reaction gas into the melt inside the settler.

Abstract: A silicate ore containing gold and silver is melted with the slag from a copper converter and a reducing agent. A source of CaO may also be added to the slag so that the treated slag may contain at least 3.0% by weight of CaO. Copper is recovered from the slag and absorbs gold and silver from the ore. This method drastically improves the capacity for the treatment of a silicate ore containing gold and silver during the smelting of copper. It enables the complete melting of the ore without leaving any ore undissolved.

Abstract: A method of recovering Zn and Pb from iron and steel dust wherein the interior of a rotary smelting furnace connected to the discharge side of a rotary kiln is heated by a burner disposed on the outlet side of the rotary smelting furnace; a heating gas is introduced into the rotary kiln to subject the iron and steel dust containing Zn and Pb which was fed in the rotary kiln to a preliminary reduction with the aid of a reducing agent and, if required, a flux so as to volatilize Zn and Pb; and the product of the rotary kiln is fed into the rotary smelting furnace with addition of a flux to melt the resultant mixture and further volatilize Zn and Pb entrained in the product.

Abstract: A honing head comprises a holder having a plurality of radial guide slots angularly spaced from each other and an axial hole, a rough-finishing cone shaft and a finishing cone shaft or a single cone shaft axially slidably received in the hole, and a plurality of rough-finishing and finishing honing stone supports alternately disposed in the guide slots for radial movement therein. The honing stone supports have axially spaced legs having inclined cam surfaces held in abutment with tapered portions of the cone shafts. The honing stone supports are connected to the cone shafts by connectors having one ends fixed to the honing stone supports and second ends slidably received in grooves defined in the cone shafts or the supports and having portions inclined with respect to the axes of the cone shafts in the same direction and at the same angle as the inclination of the tapered portions.

Abstract: In a photosensor having a metal electrode, at least one photoelectric conversion layer which overlies the metal electrode, and a transparent or partly transparent conductive layer which overlies the photoelectric conversion layer, a recombination layer for recombining electrons and holes is disposed between the metal electrode and the photoelectric conversion layer. By disposing the recombination layer, the metal electrode having an insulating oxide film on its surface can be handled as if the insulating oxide film were not existent. The dark current is suppressed, and the photo-response is made good. As the materials of the recombination layer, Sb.sub.2 S.sub.3, As.sub.2 Se.sub.3, As.sub.2 S.sub.3, Sb.sub.2 Se.sub.3 etc. are typical.

Abstract: A planar heat generating device is made up of two heat radiating plates having through-holes, heat generating units of positive temperature characteristic material held between the two plates, two lead wires connected to the two plates, and an insulating cover layer of heat resisting synthetic resin which covers the two plates, the heat generating units and the connecting points of the lead wires. Fluid through-holes are formed in the parts of the insulating cover layer which are applied to the through-holes of the plates, so that the heat generated is effectively conducted to the fluid.

Abstract: Disclosed is an electrophotographic plate having a laminated structure comprising a first Se layer containing 3 to 10% by weight of As, a second Se layer containing 40 to 47% by weight of Te and 3 to 10% by weight of As and a fourth Se layer consisting solely of Se or comprising Se and up to 10% by weight of As or an organic semiconductor layer, wherein a substrate is arranged so that at least the face of the substrate which is contiguous to the face of one of said first Se layer and said fourth Se layer or organic semiconductor layer, that is located on the outer side of the laminated structure, is electrically conductive.It is preferred that the fourth Se layer be formed by vacuum evaporation deposition while maintaining the substrate temperature at 50.degree. to 80.degree. C. The residual potential of the electrophotographic plate can be reduced.