Abstract: A device for colorimetric assay of at least one component in a liquid sample, which device comprises a support, a reagent layer formed on a part of one surface of the support and a sample-receiving layer which covers at least a part of the reagent layer and at least a part of the support surface, with which the timing of application of a sample on the device is automatically detected with accuracy.

Abstract: A method and apparatus for recording and reading information in a recording medium comprising a thin film of an organic compound having polymorphisms. The free energy of each polymorphism is different with each other. Information is recorded in the recording medium by applying energy to the recording medium and transferring locally the polymorphism of the organic compound to another polymorphism of the organic compound. The amount of the energy corresponds to the difference in free energy between the polymorphisms. Information is read from the recording medium by optically discriminating between the optical absorption properties of the polymorphisms.

Abstract: A refrigerating apparatus which is capable of accurate and swift correspondence to a transient change of a refrigerant circuit or an accumulated deviation of the degree of superheat of a refrigerant, thereby releasing the state in which the liquid refrigerant is flowing back to the compressor and the overheated state, and a method of controlling such a refrigerating apparatus. The refrigerating apparatus comprises a refrigerant circuit composed of a condenser, an expansion valve and an evaporator which are connected to each other in series, a means for detecting the evaporating temperature of the refrigerant, a means for detecting the exit temperature of the evaporator, and a control means for controlling the opening of the expansion valve on the basis of the evaporating temperature of the refrigerant and the exit temperature of the evaporator in accordance with a fuzzy reasoning.

Abstract: A device for colorimetric assay of at least one component in a liquid sample, which device comprises a support having a through hole with an area of from 3 to 80 mm.sup.2, a transparent porous film which is provided on the support to cover the hole, a reagent layer provided on a surface of the porous film which is not contacted to the support, and a sample-holding layer which covers the reagent layer and a part of a surface of the support, whereby an amount or concentration of at least one component in the liquid sample may be easily and accurately measured.

Abstract: A signal reproducing apparatus reproduces a video signal from a recording medium in which a first modulation signal has a video signal frequency-modulated at carrier frequency fc and a second modulation wave has a second signal modulated in a lower frequency region than the frequency fc. A frequency demodulation circuit for frequency-demodulates a first modulation wave and subtracts the cross modulation interference generated in the demodulation signal depending on the output from a detecting circuit. A first filter separates the second modulation wave from the reproduced signal. A detecting circuit detects the cross modulation interference component remaining in the demodulation signal in a specified period from the output signal of the first filter and the output of the demodulation circuit.

Abstract: A cation exchange polyimide resin having resistance to organic solvents which contains polyamidocarboxylic acid units providing sites of ion exchange and represented by the formula (I): ##STR1## wherein R.sup.1 is a tetravalent organic group, and R.sup.2 is a bivalent organic group, which is capable of trapping cations from organic solvents.

Abstract: An optically active compound represented by formula (I): ##STR1## wherein R.sup.1 represents an alkyl group having from 6 to 18 carbon atoms or an alkoxy group having from 6 to 18 carbon atoms; A represents ##STR2## or ##STR3## wherein ring ##STR4## represents a nitrogen-containing hetero-aromatic ring; n and m each represents 0 or 1; R.sup.2 represents an alkyl group having from 1 to 12 carbon atoms; and C* is an asymmetric carbon atom. The compound of formula (I) exhibits excellent physicochemical stability, a low temperature range for the chiral smectic C phase when used either alone or in combination with other compounds, and a rapid response.

Abstract: A device is provided for electronically editing and recording new signals on recorded tracks on a recording medium. Reproduction is started from the track just before an editing point and a magnetic head mounted on an electro-mechanical converting element traces the curvature of the reproducing track. A deviation amount of the electro-mechanical converting element upon reproduction of the track just before the editing point is detected by a strain detecting sensor mounted on the electro-mechanical converting element. The detection signal is sampled at a plurality of sample points and stored in a memory circuit. When the head reaches the editing point, the head is set into the recording mode.

Abstract: A method of manufacturing a polyimide thin film is disclosed which comprises supplying vapors of a polyimide starting material comprising a plurality of polyimide forming monomers into a plasma atmosphere, transferring the ionized polyimide starting material, under an electric field, to the surface of a glass or metallic substrate and depositing the material thereon, and heating the same during or after deposition, thereby forming a polyimide thin film as an orientation film on the substrate.

Abstract: A video recording and reproducing apparatus with photoelectric image camera in which a color signal processing circuit of a recording system is simplified. For recording, a luminance signal and a chrominance signal are produced in accordance with an image being picked up through a photoelectric transducer. The luminance signal is angle-modulated, while a carrier signal having a lower frequency than the standard carrier signal is directly modulated with the chrominance signal, whereby a chrominance recording signal equivalent to a signal obtained by a frequency conversion of the standard carrier signal to a low frequency band is obtained and added with the angle-modulated luminance signal to be recorded. Upon reproduction, the angle-modulated luminance signal undergoes angle-demodulation to be converted to a reproduced luminance signal, while the color (chrominance) recording signal is frequency-converted to a high frequency band to be reproduced color signal.

Abstract: A tracking error signal forming circuit is disclosed, which circuit comprises means for obtaining a reproduction time difference between specified signals, each of which is contained in the reproduced signal reproduced by each of at least two heads having different azimuthal angles and mounted on an electro-mechanical converting element; reference value forming means for forming a reference value for the tracking control, operating means for calculating the difference between the reproduction time difference and the reference value or the sum thereof; displacement means for displacing forcedly the electro-mechanical converting element in the positive or negative direction; and maximum value detecting means for detecting the maximum value of at least one of the reproduced signals; the reference value forming means including means for calculating the difference between the reproduction time difference and the fixed reference value or the sum thereof at the point of time at which the maximum value of the reprodu

Abstract: A photographing number change-over device for a two lens camera having two photographing lenses equipped with shutters, respectively, is capable of photographing two pictures on a film. The photographing number change-over device comprises a driving member moving to two different positions alternately every time shutter charge is effected, a light cut-off plate rotatable about an axis substantially in parallel with optical axes of the photographing lenses, a regulating member engaging the light cut-off plate and detachably engaging the driving member for anchoring the light cut-off plate at either of first and second positions where the light cut-off plate shuts off either of the two photographing lenses and anchoring the light cut-off plate at a third position where the light cut-off plate shuts off neither of the two photographing lenses, and a change-over member for causing the regulating member and driving member to engage and disengage from each other.

Abstract: A circuit for reproducing informaiton signals and four different tracking control pilot signals recorded on respective tracks on a magnetic tape and producing from the pilot signals a tracking error signal indicative of a relative positional deviation between each of a plurality of magnetic heads and each track of the tape. The circuit includes a balanced modulation circuit for successively multiplying reproductions of the pilot signals and a reference signal to produce a multiplication output signal having components corresponding to the respective pilot signals. Respective tuning circuits derive first and second signals from the multiplication output signal, having different frequency components and corresponding to different ones of the pilot signals.

Abstract: The present invention relates to a cue signal recording method in which multi-audio tracks are formed by dividing a magnetic tape in a widthwise direction, and PCM data is recorded in a scanning track segment of an audio track of the multi-audio tracks by a helically scanning rotary head. A cue signal is then recorded in a remaining area of the scanning track segment except for the area recorded with the PCM data, such as in the after-recording-margin area or the track-guard area which is immediately after the PCM data area.

Abstract: An apparatus for processing sensitive materials has a tank in which film containing a sensitive material is conveyed, the film passing through a processing bath while guided by conveying rollers, and at least one wiper coming into contact with at least one of the conveying rollers facing to a film surface of the sensitive material. A flow of processing solution is produced by at least one inlet or jet in the region where contact occurs between a wiper and a conveying roller, so that any material wiped off the roller is removed away from the contacting region.

Abstract: In a helical-scan tape recorder, a digital signal having a series of M identification words of N bits each is generated. One of the N-bit words is a discrimination word identifying a particular combination of the other N-bit words. The M words are organized into J groups of I words each (where J.times.I=M) and recorded with an information signal at spaced intervals within each of a series of sectors defined along each track of a recording tape so that the word groups are interleaved with the information signal and each of the recorded sub-blocks can be traced substantially simultaneously by a transducer head during a search mode. At least one of the word groups includes data bits identifying distinct, but mutually closely related items of information and discrimination bits which identify the data bits. During search mode, distribution bits can be detected with the data bits of the same word group to allow the closely related items of information to be displayed.

Abstract: An asphalt foam having open cells wherein asphalt mixed with an alkali metal silicate is fixed to the wall of the open cells. The asphalt foam is useful for a joint filler, a vehicle floor material, etc. A method of producing the asphalt foam, which comprises the steps of impregnating an open cell foam sheet with an aqueous mixture consisting of asphalt emulsion and an aqueous solution of an alkali metal silicate, and drying the impregnated foam sheet.

Abstract: A system for interconnecting with a single coaxial cable between an image pickup device such as a color television camera and a recording device such as a video tape recorder is provided. The camera signal is separated into the luminance signal which in turn is frequency modulated and two color signals which in turn are converted at a low frequency band lower than the lower sideband of the FM luminance signal. The FM luminance signal and the modulated color signal are multiplexed with the audio signal at the base band and transmitted on a single coaxial cable to the recording device. In the case of the high-density recording without the guard bands between the adjacent tracks, there is provided a means for maintaining the one-to-one correspondence between the rotating recording head and the processing of the modulated color signal which is varied for each track.

Abstract: A control signal recording and reproducing system for exactly tracking a record track in a helical scan type VTR or the like is disclosed.Intermittent pilot signals are recorded with the frequency spectra thereof being interleaved between adjacent tracks. In a reproducing operation, the main track pilot signals and the adjacent track pilot signals are separated by a comb type filter, and using a time position of the main pilot signals as a reference, the adjacent track pilot signals are separated in time to the front adjacent track pilot signal and the rear adjacent track pilot signal to detect the direction of a tracking error.