Abstract: A sheeter which can cut a running printed sheet discharged from a web-fed rotary gravure press, a web-fed rotary forms press, or similar rotary press with higher accuracy is provided on-line. The sheeter can selectively carry out a change in the length of cut with the change of a printing plate cylinder. A drum roller, which has the same diameter as that of the plate cylinder in a printing unit or a diameter that is enlarged by an amount of the applied tension, is provided in such a way that it is exchangeable and lies on a sheet guide passage introducing the running printed sheet to a cutting section with the flying knife. The drum roller is rotationally driven synchronous with the plate cylinder by a driving shaft of the plate cylinder, and feeds the running printed sheet to the cutting section by winding it.

Abstract: A data recording/reproduction method and apparatus uses an optical disk equipped with wobbling track guide grooves disposed in a track scanning direction and minutely wobbled. The apparatus uses a circuit for detecting and correcting displacement of an optical spot position from the wobbling track, and a system for allowing data to correspond to front and rear edges of recording pits as a recording system, and includes a circuit for independently handling reproduction pulses obtained from reproduction signals of the recording pits on the front and rear edge sides and for generating reproduction clocks. A circuit resynthesizes the two series of reproduction pulse trains by a specific pattern portion in the data. Another optical disk apparatus divides each track into zones, and switches a rate of revolution each zone to attain a substantially equal linear velocity. A servo signal reproduction clock generation circuit and a data signal recording/reproduction clock generation circuit are disposed separately.

Abstract: In a rotary type storage apparatus and a control method thereof, a plurality of concentric or spiral information tracks are set and also each of the plural information tracks is subdivided into a plurality of sectors along a circumferential direction, which constitute a plurality of information recording planes. Also, in this apparatus and method, there are provided a plurality of read/write heads employed at each of the information recording planes and accessible to the information tracks, and also a head drive mechanism for positioning these plural read/write heads to the information tracks. At least one of the plural information recording planes corresponds to such a recording plane where a substitution information track has been set, on which a substitution sector corresponding to a failed sector present at another information recording plane is recorded.

Abstract: A separation type optical head according to the present invention includes at least a light source portion for emitting collimated beams, a focusing device (a focusing lens) for focusing the collimated beams onto an information recording surface of an optical disc medium, a focal point control mechanism for the position of the spot on the information recording surface, and a photo-detection portion for receiving beams reflected by the information recording surface. The structure is divided into a fixed portion including the light source portion and the photo-detection portion and a movable portion including the focusing device (focusing lens) and the focal point control mechanism. At least the movable portion of the separation type optical head is movably accommodated n a frame (sealing case) for the optical head so as to prevent irregular vibrations of the movable portion due to high speed air flows or turbulence.

Abstract: Surface-treated sodium bicarbonate particles, the surfaces of which are coated with sodium carbonate or its double salt, are disclosed. Heat treatment or irradiation with micro waves o infrared light converts the surfaces of sodium bicarbonate particles into sodium carbonate. The surface-treated sodium bicarbonate particles exhibit an increased capacity to bind with other sodium bicarbonate particles as well as with other components when they are molded. They can be used as an excellent binder for molding various preparations. The products produced have a prolonged storage stability.

Abstract: A magnetic recording medium comprising a magnetic recording layer and at least one protective layer formed on the recording layer, wherein the outermost protective layer on the side exposed to air is made of an oxide film.

Abstract: The novel antitumor antibiotic designated herein as BU-3420T is produced by fermentation of Micromonospora chersina strain M956-1 (ATCC 53710). BU-3420T and its triacetate derivative possess antibacterial and antifungal activity and also inhibit the growth of mammalian tumors such as P388 leukemia in mice.

Abstract: A recording/reproduction head incorporates an optical system which produces two light spots on an optical disk at positions spaced out from each other by, for example, half the radial span of the effective area of the disk. In recording or reproducing information using the two light spots, the inner light spot is moved to an unused track area provided in the innermost section of the disk, an auto-focusing servo system for the inner light spot is started, a control track provided near the unused area is read to judge the compatibility of the disk, and, only when the disk compatibility is verified, the outer light spot is moved to an unused track area provided in the outermost section of the disk, and an auto-focusing servo system for the outer light spot is started by making reference to a signal to the already operating inner auto-focusing servo system.

Abstract: A digital television receiver capable of storing a desired television image information in response to an image storage instruction signal and reproducing the stored image information as a still image on the screen of a display tube (116) at any time as required. This digital television receiver comprises a control circuit (117', 122a) for writing desired image information in any of field memories (120a, 120b) in response to pressing of a memo key (128) of a remote controller (118), and a control circuit (117', 122b) for repeatedly reading out image information written in the field memories (120a, 120b) in response to pressing of a call key (129) of the remote controller (118) and supplying the information to a color matrix circuit (114).

Abstract: The novel antitumor antibiotic designated herein as BU-3420T is produced by fermentation of Micromonospora chersina strain M956-1 (ATCC 53710). BU-3420T and its triacetate derivative possess antibacterial and antifungal activity and also inhibit the growth of mammalian tumors such as P388 leukemia in mice.

Abstract: The novel antitumor antibiotic designated herein as BU-3420T is produced by fermentation of Micromonospora chersina strain M956-1 (ATCC 53710). BU-3420T and its triacetate derivative possess antibacterial and antifungal activity and also inhibit the growth of mammalian tumors such as P388 leukemia in mice.

Abstract: An apparatus for positioning and holding a photosensitive material comprises: a case provided movably in a back-and-forth direction on a transparent plate held on a table frame of a copying apparatus; an overlay sheet to be spread over the photosensitive material, having one end fixed to a rear end of the transparent plate and another end held by a sheet roller in the case in a yieldable and retractable manner; stopper members provided on the table frame for placing the case in a desired position in the back-and-forth direction; contact members held by the case for positioning the photosensitive material in a transverse direction, with which at least two right-angled edges of the photosensitive material are brought into contact; and an evacuating device for evacuating air trapped between the overlay sheet and the transparent plate after positioning of the photosensitive material.

Abstract: Novel cycloalkan-1-ol derivatives having a formula (I): ##STR1## wherein R represents a hydrogen atom, lower alkyl group or an allyl group, and n is an integer of 3 or 4 provided that when n is 3, R is not a hydrogen atom or lower alkyl group, have a woody, green and earthy odor and may be prepared according to one of the following reaction formulae: ##STR2## where R.sub.1 represents a lower alkyl group or allyl group, M represents MgX or lithium atom, n is a value of 3 or 4, and X represents a halogen atom. ##STR3## The derivatives (I) may be blended with other perfumes to give perfume compositions and thus obtained compositions can be widely applied to various articles which require aromatizing such as perfumes, soaps, shampoos, hair rinses, cosmetics, hair sprays and the like.

Abstract: A tubular belt conveyor has an endless belt having a substantially flat cross-section with constant thickness over the breadth thereof. The belt is deformed over its breadth in a curved fashion such that the longitudinal side edges of one surface are brought into abutment with each other thus forming a tube, with the adjacent edges constituting a longitudinal lug projecting radially outwardly from the tube portion. The lug is clamped and held on both sides by a pair of guide rollers and pressed at its radially outer end surface by a pressing roller. The tubular form of the belt is maintained by a plurality of tube-forming rollers surrounding the tube portion of the belt. The flat belt is easy to produce and can be coiled in a compact manner for easy packaging. Local wear of the belt due to contact with the axial end edges of the pulley is avoided because the pulley at each end of the conveyor may have an axial length greater than the breadth of the belt, because of the flat cross-section of the belt.

Abstract: A buffer, particularly suitable for use in railway vehicles, comprising a cylinder including a movable piston and a buffer fluid contained therein, the buffer fluid formed of a very high-viscosity fluid such as silicone oil, and at the same time the cylinder includes a gaseous medium having a volume at least corresponding to the displacement of the piston rod of the piston when it moves in the cylinder to the end of its stroke.

Abstract: In the manufacture of compound billets composed of two or more different metals for use in hydrostatic extrusion, care must be exercised to see whether or not products possessing a predetermined compound status are produced from the compound billets by means of the hydrostatic extrusion process.