Abstract: A scanning type image formation apparatus capable of selectively changing image magnifications is provided with a mirror for scanning an original, movable support means for supporting the mirror, a moving member to which a drive force transmitting member is connected and which is caused to move along a predetermined path for scanning of the original by the drive force transmitted by the drive force transmitting member, connecting means for connecting to the moving member the movable support means supporting the mirror, and means for changing the connected position of the movable support means to the moving member to change the length of the light path correspondingly to a selected magnification.

Abstract: An apparatus for reproducing a disc record on which a PCM signal is recorded in run length limited code includes an input terminal for receiving a reproduced signal from the disc record; a detecting circuit for detecting the maximum or minimum transition interval contained in the reproduced signal and for producing a detecting signal in response thereto, and a comparing circuit for comparing the detecting signal with a reference signal corresponding to the maximum or minimum transition interval during the rotation of the disc record at a predetermined velocity, and for producing a control signal in response to said comparisons to be supplied to a servo circuit for controlling the rotation of the disc record.

Abstract: A magnetic recording medium comprising a non-magnetic base which has formed thereon a magnetic layer made of a binder and fine ferromagnetic particles dispersed therein is disclosed. The magnetic layer is characterized by containing a mineral oil having a viscosity of 300 cs or less at 37.8.degree. C. and an aliphatic acid having 12 to 22 carbon atoms.

Abstract: Apparatus for maintaining a constant linear velocity for a PCM disc record which includes a detector for optically detecting the PCM signal on the record and supplies the output to a differentiating circuit and a rectifier circuit with the output of the rectifier circuit supplied to a peak detector circuit which supplies its output to a level comparator that also receives a reference level from a reference source. A first phase comparator also receives the output of the rectifier circuit and controls a voltage controlled oscillator through a low pass filter and the output of the voltage controlled oscillator is supplied to the phase comparator. A divider receives the output of the voltage controlled oscillator and supplies a first input to a phase comparator which also receives an input from a reference frequency generator. The outputs of the level comparator and the phase comparator are supplied to the motor drive circuit which controls the drive motor for the disc record.

Abstract: A moving-coil type stereo pickup cartridge comprises a vibration mechanism, including a stylus for tracing the groove of a sound track on a record disc, at least one coil plate provided in the vibration system and adapted to vibrate in response to vibrations of the stylus, and a structure for forming a magnetic field for the coil plate. The coil plate comprises a thin insulative substrate and a pair of left and right coils substantially symmetric with respect to a center line and formed by an electrically conductive thin film placed in a spirally wound pattern on at least one surface of the substrate. The magnetic field-forming construction comprises a permanent magnet and a pair of yokes adapted to clamp the permanent magnet. The pair of yokes have confronting surfaces for defining a gap in which the coil plate is interposed and a recessed substantially reverse V-shaped notch or cutout. The notch is defined by edge parts or facets.

Abstract: A seat is made by using a frame fabricated by cold drawing of laminates composed of an inner layer of a non-metallic material sandwiched between two metal foil outer layers.

Abstract: In a disc record reproducing apparatus for reproducing a disc on which a PCM (pulse code modulation) signal in the form of an RLLC (run length limited code) is recorded, a reproduced PCM signal therefrom is frequency-divided at a constant frequency dividing ratio, a frequency-divided PCM signal is compared with a reference frequency signal, and then the rotation of the disc record is controlled by a compared output.

Abstract: The present invention relates to a magnetic recording medium having on a non-magnetic support a magnetic layer comprising a ferromagnetic fine powder in a binder, in which a colloidal silica having a diameter of 7 to 50 m.mu. and methyl groups on the surface thereof is added in a proportion of 2 to 20 parts by weight to 100 parts by weight of the ferromagnetic fine powder during dispersion of the coating composition of the ferromagnetic fine powder.

Abstract: An image forming apparatus including image forming device, for forming an image on a recording member, having a scanner for scanning the recording member, an input device for selecting and instructing the function mode of the scanner, and a controller having a plurality of stored programs corresponding to the scanning modes for controlling the function of the image forming device, the controller being adapted to select a stored program in response to the input device and controlling the function of the image forming device in accordance with the program of the selected scanning mode.

Abstract: A variable-directivity microphone device comprises at least three microphones. First and second microphones spaced apart by specific distances and facing in the same direction and a third microphone facing in the opposite direction. A directivity varying control capable of undergoing displacement between at least three positions, a first mixer operating, while the control is between a first and a second position, to mix, in accordance with the position thereof, the third microphone signal with the first microphone signal and, while the control is between the second and third positions, to cause the third microphone output signal to be zero, and a second mixer operating, while the control is between the second and third positions, to mix the first and second microphone output signals with varied mixing quantity and, while the control is between the first and second positions, to cause the output signal of the second microphone to be zero.

Abstract: A magnetic recording material, and, more particularly, a high density magnetic recording material is disclosed having an aromatic polyamide support in which the adhesion between the support and the magnetic recording layer is improved by an undercoating of an alcohol-soluble polyamide resin.

Abstract: A large-sized pneumatic radial tire is disclosed. The tire comprises a tread including grooves, a belt composed of a plurality of rubberized layers each containing steel cords, and a carcass of a substantially radial construction. The tread includes two half regions divided with respect to a crown center, one a region in a direction of plysteer due to the tire construction and the ground contact reaction force acting on steel cords of at least one rubberized layer disposed near the tread, and the other being a region opposite to the direction of plysteer. A row of small holes are formed in an island part along its edge near the kicking-out side of the groove in the region opposite to the direction of plysteer.

Abstract: A pneumatic tire for heavy load vehicles such as trucks and buses comprising a tread composed of a flat main region and an inclined region located at both side edges of the flat main region and including a number of notches spaced apart from each other and arranged substantially transversely to the circumferential direction of the tire.

Abstract: The cortisol compound of the formula (E) ##STR1## wherein R represents a hydroxy group, a tyrosine lower alkyl ester residue, a tyramine residue, a histamine residue, a 7-aminoheptanoyl-tyrosine lower alkyl ester residue, a radioiodinated tyrosine lower alkyl ester residue, a radioiodinated tyramine residue, a radioiodinated histamine residue, a radioiodinated 7-aminoheptanoyltyrosine lower alkyl ester residue, a protein or a polypeptide; and a radioimmunoassay method using cortisol derivative.

Abstract: A hentriacontapeptide of the formula (I) ##STR1## a radioactive labeled hentriacontapeptide of the formula (I), useful in a radioimmunoassay method and a radioimmunoassay method for determining calcitonin.

Abstract: A heavy duty pneumatic radial tire exhibiting less railway wear is disclosed. This tire has a tread pattern formed in a tread divided into a plurality of circumferential ribs by at least two zigzag grooves. Each of these zigzag grooves has a width, amplitude and pitch of 4.5 to 7.5%, 0.5 to 2.0% and 2.0 to 7.0%, respectively, based on a width of the tread.

Abstract: An electronic calculator watch which comprises timekeeping means composed of an oscillator, a frequency divider connected to the oscillator, a counter circuit connected to the frequency divider, and a driver circuit connected to the counter circuit for providing an output signal indicative of time information, and calculating means composed of an oscillator circuit and a calculation circuit responsive to perform calculations under control of numerical inputs furnished by external operation device provided on a watch case. The watch also comprises a display including a first display section connected to the driver circuit of the timekeeping means to display the output signal delivered therefrom, and a second display section connected to the calculating means to display the result of calculations, each of the first and second display sections having a plurality of digit electrodes and a plurality of segment electrodes arranged in a matrix configuration.

Abstract: A process for producing a magnetic recording member comprising a non-magnetic support and a magnetic layer comprising at least two layers on the non-magnetic support which comprises the steps of:(A) providing the lower magnetic layer on the non-magnetic support;(B) bringing the lower magnetic layer into contact with an organic solvent incapable of dissolving the lower magnetic layer; and(C) providing the upper magnetic layer on the lower magnetic layer by coating thereon a magnetic coating composition, preferably containing the above organic solvent or a binder soluble in the above organic solvent.

Abstract: A radial tire for heavy load vehicles comprising a tread portion having an outer contour composed of a relatively transversely flat main region and a conical region located at both end edges of the main region. A number of thin incisions extend across the conical region having inner ends not reaching to the inside of the main region.

Abstract: A switch structure for an analog quartz crystal timepiece having a watchglass plate, a time dial to display time in an analog mode, and a digital display device, which switch structure comprises a plurality of transparent electrically conductive electrode films provided on the watchglass plate at positions corresponding to numerical display indicia on the time dial to permit generation of input signals corresponding to the numerical display indicia, respectively.