Abstract: Phosphor layers are formed on the inner surface of a face plate. An electron source device that emits electrons to excite the phosphor layers is provided on the inner surface of a base plate. The electron source device comprises an alumina substrate that has a number of small through holes. Electron-emitting material is buried in the through holes. A reference electrode is formed on the lower surface of the alumina substrate and contacts the electron-emitting material. A gate electrode is formed on the upper surface of the substrate and insulated from the electron-emitting material. The gate electrode is configured to concentrate an electron field of the electron-emitting material by virtue of an voltage applied between the reference electrode and the gate electrode, thereby to cause the electron-emitting material to emit electrons toward the phosphor layers.

Abstract: To suppress pressure fluctuation caused by insertion of arms between disks, which arms support thereon magnetic heads, to reduce disk flutter to thereby reduce disk driving power in a magnetic disk apparatus, there are provided an open space not covered by a shroud, which constitutes a part of a housing structure to cover a side surface of a disk stack, and provided on a downstream side of the arms relative to an airflow moving along surfaces of the disks as the disks rotate, and a channel, which connects a space on an upstream side of the arms and the open space not restricted by the shroud on the downstream side of the arms, the channel being provided with a linear section, which has a rectifying effect on the airflow.

Abstract: Disclosed is a coloring coating agent comprising at least a binder, a pigment, and a dispersing agent, the binder being sol obtained by a partial reaction of an organic silicon compound, the pigment being a mixture comprised of a red rouge pigment and a yellow organic pigment in a ratio ranging from 1:10 to 2:1 by weight, the red rouge pigment having a spherical particle shape and a particle size of 0.1 to 0.3 &mgr;m, the yellow organic pigment having a particle size smaller than or equal to 0.3 &mgr;m, and the binder (solid portion) and the pigment being mixed in a ratio ranging from 2:1 to 2:5 by weight. The coating agent is useful in coloring a bulb for lightning equipments of vehicles yellow.

Abstract: A data collection method and system is provided, by which blank time due to a time lag is not generated and a call probability to be broadcast can be calculated based on the number of potentially calling terminals which was counted as recently as possible. In the method, the center broadcasts to terminals a call probability and a control ID number which is increased by one for each broadcast. Each terminal calls up the center based on the received probability value, and if calling up, the terminal informs the center of terminal data and the received ID number. The center manages the probability value and the number of received calls for each ID.

Abstract: A magnetic recorder in which magnetic signals are transmitted between a magnetic head device and a magnetic tape, comprises a capstan shaft for driving the magnetic tape when the magnetic tape is pressed against the capstan shaft, so that the magnetic tape runs on the magnetic head device. A pinch roller presses the magnetic tape against the capstan shaft. A main chassis has the magnetic head and the capstan shaft mounted thereon. The magnetic tape and the pinch roller are mounted on a side chassis, with the slide chassis being movable relatively to the main chassis in a feed path between a first position in which the magnetic tape is wound on the magnetic head device for transmitting the magnetic signals therebetween, and a second position in which the magnetic tape is separated apart from the magnetic head device.

Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.

Abstract: There is provided a magnetic tape device capable of highly accurate positioning at a high speed. For this purpose, the head is driven in the direction of the width of the tape by eliminating the friction between the tape the head. In order to allow positioning in the direction of the width of the tape, even if a servo signal cannot be read from a servo track, the absolute position of the head from a reference position is detected, and the head is controlled based on the absolute position.

Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.

Abstract: There is disclosed a salt of a polymer having charged anionic functionalities used as a dispersant in a dispersion solution containing a pigment and used for forming a first pigment layer. A substance which forms a salt with a polymer having charged anionic functionalities is mixed into a solution applied on the pigment layer, and/or mixed into a developing solution. The formed layers are patterned and thus a display screen is obtained.

Abstract: A data collection scheme with an improved data collection efficiency. In order to collect data from many terminals to a center having a plurality of center service ports through a public network, terminal data are transmitted from the terminals to the center through the public network by carrying out a calling operation to call up the center at each terminal, and the terminal data received at the center service ports are collected together. At the same time, a congestion state of the center service ports is measured, and a control data for controlling the calling operation at each terminal in order to improve the measured congestion state is generated and broadcast from the center to the terminals. Then, the calling operation at each terminal is controlled according to the control data broadcast from the center. The control data indicates at least a call probability by which the calling operation at each terminal is carried out probabilistically.

Abstract: A tape cartridge is received into one end of an information recording and/or reproducing apparatus conforming to an 8 inch Form Factor Size. A first reel is held inside this tape cartridge, and a tape wound onto this first reel is extracted from a cartridge including the first reel and threaded by a simple pivotal motion of a tape threading arm, and wound onto a second reel disposed at the other end of the information recording and/or reproducing apparatus. The pivotal center of the tape threading arm and a recording head are disposed at opposite sides respectively with regard to a line joining a first and second reel axes to facilitate a compact overall construction. Tape guides formed into cylindrical rollers and the recording head are disposed on the inner side of the trajectory of the tape threading to transfer the tape smoothly. The tape guides and the recording head may be arranged substantially in line. Also, the tape guides next to the recording head may be fixed rollers.

Abstract: As a method of increasing the storage capacity of a magnetic recording and reproducing apparatus for recording and reproducing information to and from a magnetic tape in a cartridge, there is a helical scan recording method in which the magnetic tape is diagonally wound around a drum which rotates a magnetic head. With an apparatus adapted to this method, the disposition of the cartridge and the take-up reel for taking up the magnetic tape on the same plane arises a necessity of considerably bending the magnetic tape at the drum portion and, accordingly, the magnetic tape is damaged. In order to prevent the damage of the foregoing type, the tape passage surface from the cartridge to the drum and the tape passage from the drum to the take-up reel are formed by an angle at which the direction in which the magnetic tape is moved is changed due to winding of the magnetic tape around the drum so that the magnetic tape is not bent excessively.

Abstract: A load torque imposed on a take-up reel motor is estimated from the current in a take-up reel motor and the rotational speed of the take-up reel. The current value supplied to the take-up reel motor is adjusted on the basis of the estimated load torque. A tape feed rate detected is compared with a reference signal produced from a target tape speed signal. On the basis of the comparison result, the torque of the take-up reel motor is controlled in such a manner that the tape feed rate assumes a predetermined value. The gain of a speed control system for controlling the rotational speed of the take-up reel is adjusted on the basis of a detected period of tape speed.

Abstract: A tape guide device having apertures formed in two tape-winding surfaces of non-rotatable curvature portions. A tape restriction is provided at a connecting portion of the tape guide device interconnecting the curvature portions. A flange is provided on one of the curvature portions for movement along an axis thereof to adjust the height thereof. The flange has an outer diameter greater than that of the one curvature portion. The curvature portions are integrated with each other. According this, an air film is generated between the tape and the tape-winding surfaces by discharging air from the apertures, thereby reducing the friction coefficient between the tape and the tape-winding surfaces to suppress the increase of tape tension. The tape is restricted to fluctuate in the direction of width. Further, the attitude and relative positioning between the curvature portions can be secured with high precision.

Abstract: In a tape loading device of the invention, a tape is taken out by tape guides mounted on an inclined loading ring, and the loading ring is rotated to wind the tape on a rotary drum from one side thereof. An auxiliary inclined guide is provided between the rotary drum and the leading tape guide. Only during a loading operation, the auxiliary inclined guide contacts the tape, while angularly moved about the leading tape guide. When the loading operation is completed, the auxiliary inclined guide is disengaged from the tape. With the provision of the auxiliary inclined guide, the tape is prevented from being twisted between the rotary drum and the leading tape guide.

Abstract: A coating solution composition for forming a glass gel thin film, contains at least one material selected from the group consisting of a metal alkoxide and a polycondensate of the metal alkoxide, a coloring material, an alcohol solvent, and a dispersant having an adsorption material for the coloring material, soluble in the alcohol solvent, and having miscibility with the metal alkoxide, wherein the coloring material has an average particle size of 3 nm to 300 nm. A glass gel thin film obtained by sintering this composition at a temperature of 100.degree. to 300.degree. C. is excellent in water resistance, durability and has a high strength.

Abstract: A magnetic recording/reproducing apparatus includes a head for performing recording/reproducing, a chassis for positioning the head, a cassette holder for positioning a cassette on the chassis, the cassette including an opening portion through which a recording medium is received or drawn out, a cassette holder supporting member for supporting the cassette holder on the chassis, and a casing which contains these component parts. The cassette holder supporting member has a substantially U-shape, facing three side surfaces of the cassette except the opening portion, and includes integrally formed fastening portions to be secured on the casing. The cassette holder supporting member is fastened to the casing through two fastening portions, and the chassis is directly fastened to the casing in one portion of the chassis.

Abstract: A magnetic recording and reproducing device and a magnetic tape library device are provided for properly recovering a function and issuing a warning when a failure of a magnetic head of the device takes place because of wear and dirt of the magnetic head. Further, a method for maintaining the magnetic head is provided. A wear sensor and a dirt sensor are prepared for sensing a wear amount of a state of dirt of the magnetic head. A head check controller operates to determine the wear amount of the magnetic head and the state of dirt based on the sensed result. In accordance with the determined result, the warning device is started for taking a precaution of preventing a head failure. As one aspect, the tape library device instructs to load the cleaning tape using a robot.

Abstract: A coating solution composition for forming a glass gel thin film, contains at least one material selected from the group consisting of a metal alkoxide and a polycondensate of the metal alkoxide, a coloring material, an alcohol solvent, and a dispersant having an adsorption material for the coloring material, soluble in the alcohol solvent, and having miscibility with the metal alkoxide, wherein the coloring material has an average particle size of 3 nm to 300 nm. A glass gel thin film obtained by sintering this composition at a temperature of 100.degree. to 300.degree. C. is excellent in water resistance, durability and has a high strength.

Abstract: Nitrogen-doped group II-VI compound semiconductor thin film manufacturing method and apparatus which are applicable to an MOVPE process. The group II-VI compound semiconductor thin film manufacturing method according to the present invention is characterized by the use of osmium as a catalyst to activate nitrogen molecules. The growth device according to the present invention has a construction wherein a nitrogen gas introducing pipe for blowing a nitrogen gas against a semiconductor substrate is disposed in a reaction chamber for growing the group II-VI compound semiconductor thin film by the MOVPE process and the osmium is disposed between the semiconductor substrate and the nitrogen gas introducing pipe.