Abstract: A moisture sensor comprising a substrate; a bottom electrode on the substrate; a moisture sensitive film sandwiched between an upper electrode and the bottom electrode on the substrate; a pair of connection terminals one of which is extended on the substrate from the bottom electrode and the other of which is formed on the substrate to be connected to the upper electrode; a step-shaped extension extended on the end of the moisture sensitive film from the upper electrode to the connection terminal for the upper electrode; and a metal film which covers said step-shaped extension.

Abstract: A platinum resistor for the measurement of temperatures having a silicon substrate, an aluminum oxide film formed on said silicon substrate, and a platinum film formed on said aluminum oxide film.

Abstract: A field effect transistor-type moisture sensor comprising a field effect transistor device incorporated with a moisture sensitive means, the electrostatic capacity or the electrical conductivity of which varies with the absorption and the desorption of water vapor or moisture, wherein said moisture sensitive means is disposed on a gate insulating film of said field effect transistor device to form an electrode structure, said moisture sensitive means being a film prepared by cross-linking cellulose acetate butyrate with at least one selected from the group consisting of compounds containing two or more isocyanate groups; compounds containing two or more epoxy groups; compounds containing two or more carboxylic acid groups; and acid anhydrides of carboxylic acids.

Abstract: A resistance-variation type moisture sensor comprising a moisture sensitive film made of a moisture sensitive material which consists essentially of sodium styrenesulfonate, methylene-bis-acrylamide, polyvinyl alcohol and polyethylene glycol, said polyethylene glycol being contained in the moisture sensitive film in an amount ranging from 3 to 7 parts by weight per 100 parts by weight of sodium styrenesulfonate.

Abstract: A moisture sensor comprising a substrate, a bottom electrode formed on said substrate, a moisture sensitive film formed on said bottom electrode and a moisture permeable electrode formed on said moisture sensitive film, said moisture sensitive film being formed by heat-treating polyvinyl alcohol, thereby exhibiting a moisture sensitive characteristic which has a linear relationship between the impedance and the relative humidity.

Abstract: A magnetic-record reproduction system is provided for selectively reproducing magnetic information signals recorded on a magnetic tape as a plurality of programs, each program being separated from other programs by cue signals. The system includes a head for reproducing the recorded magnetic information, a movable tension arm for maintaining the head in tensioned contact with the magnetic tape, and a cue signal detector mounted to the tension arm to enable selection of recorded programs thereby. A cavity is formed in the tension arm for receiving a magnetoresistive element to form the detector, and a non-magnetic metallic film is mounted on the surface of the tension arm to protect the arm from abrasion as it contacts the magnetic tape.

Abstract: A moisture sensor comprising a substrate, a moisture sensitive polymer film having hydroxyl groups formed on said substrate, an electrode formed on said moisture sensitive film, and a chemical modification layer disposed between said substrate and said moisture sensitive film, said chemical modification layer having chemical bonding strength to both said substrate and said moisture sensitive film thereby increasing adhesion between said substrate and said moisture sensitive film.

Abstract: A moisture sensitive resistive element includes a substrate made of an electrically non-conductive material, first and second electrodes deposited on the substrate in a spaced relation to each other, and a moisture sensitive film deposited on the substrate covering both the first and second electrodes. The moisture sensitive film is formed by a material given by a formula: [--CH(C.sub.6 H.sub.4 SO.sub.3 X)--CH.sub.2 --].sub.n wherein X is any one of a hydrogen atom, metal atom, ammonium, urea, triethylenediamine, tetramethyleneguanidine and hexamethylenediamine, or formed by a mixture of the above material with a hydrophilic polymer which is any one selected from a group consisting of polyvinyl alcohol, methyl cellulose and polyamide resin.

Abstract: A moisture sensitive resistive element includes a substrate made of an electrically non-conductive material, first and second electrodes deposited on the substrate in a spaced relation to each other, and a moisture sensitive film deposited on the substrate covering both the first and second electrodes. The moisture sensitive film is formed by a material given by a formula: [--CH(C.sub.6 H.sub.4 SO.sub.3 X)--CH.sub.2 --].sub.n wherein X is any one of a hydrogen atom, metal atom, ammonium, urea, triethylenediamine, tetramethyleneguanidine and hexamethylenediamine, or formed by a mixture of the above material with a hydrophilic polymer which is any one selected from a group consisting of polyvinyl alcohol, methyl cellulose and polyamide resin.

Abstract: A moisture responsive element comprises a moisture responsive organic membrane in contact with electrically conductive members, in which the organic membrane consists essentially of a crosslinked organic polymer having a hydrophilic group. The element has excellent water and moisture resistance, long-term stability and excellent humidity response over a range of humidity from 0 to 100 percent. The moisture responsive element includes a protective layer of cellulose acetate and/or polyvinyl acetate.

Abstract: A method for production of a moisture sensor comprising forming a moisture sensitive polymer film on a substrate, disposing a patterned masking material on said moisture sensitive polymer film, and etching said moisture sensitive film by means of an oxygen plasma, whereby a desired fine pattern of the moisture sensitive film is formed with fair accuracy and reproducibility.

Abstract: A thin-film moisture sensor includes a moisture sensitive polymer film formed on a bottom electrode which is carried on a substrate, and a moisture permeable upper electrode formed on the polymer film. The moisture permeable upper electrode is made of an indium (In) thin-film. In another form, the moisture permeable upper electrode is made of a two-layered electrode including an indium (In) thin-film and a gold (Au) thin-film formed on the indium (In) thin-film.

Abstract: A magnetic record-reproduction device is provided for controlling a program selection system of a tape containing a recording member and a base element. The recording member records cue signals indicating positions of programs on the tape to be reproduced. The base element supports the recording member. A magnetoresistive head comes into contact with the base element for detecting and reproducing the cue signals recorded in the recording member.