Abstract: In the method for making the magnetic recording wherein a first magnetic layer is formed on a substrate and a second magnetic layer is formed on the first magnetic layer, before forming the second magnetic layer, accelerated ions are irradiated onto a surface of the first magnetic layer. Thereby, naturally formed oxidized layer and adhered impurity on the first magnetic layer are removed from the surface of the first magnetic layer by ion etching action by the irradiation of ions, and hence a preferable condition of an interface between the first magnetic layer and subsequently formed second magnetic layer is obtained.

Abstract: The method includes applying ions and electrons from an ion gun onto a polymer film while the polymer film is traveling circumferentially along a peripheral surface of a cylindrical can from a supply location to a take-up location of the polymer film relative to the cylindrical drum. The ions and electrons from the ion gun are applied onto a part of the polymer film while it is moving through a position near the supply location of the polymer film relative to the drum at which the polymer film begins to contact the outer peripheral surface of the drum. At a downstream location relative to the drum, electrons are applied from an electron gun onto the polymer film traveling on the drum surface. At a further downstream location relative to the drum, the thin film is deposited, e.g., by vacuum evaporation, on the polymer film travelling on the drum. This method enables a thin film, having no wrinkles and with a high adhesion strength with respect to the polymer film, to be produced in a stable manner.

Abstract: In manufacturing perpendicular magnetic recording medium wherein a magnetic layer containing Co and Cr as main contents on a running substrate of polymer film incident angle (.phi..sub.f) of vaporized atom to form said magnetic layer is 30.degree. or larger at the final part of the film formation to improve manufacturing capacity, and magnetic layer (119) is heated after forming the magnetic layer in an oxygen-containing atmosphere.

Abstract: A perpendicular magnetic recording method uses a perpendicular magnetic recording medium. This medium comprises a perpendicular anisotropy film having perpendicular remanent magnetization Mr and longitudinal remanent magnetization Mr.sub..parallel., wherein the value of the ratio Mr.sub..perp. /Mr.sub..parallel. is not less than 0.2, but is less than 1.

Abstract: A vertical magnetic recording medium comprises a non-magnetic substrate, a permalloy film consisting of plural permalloy layers separated by at least one non-magnetic layer placed therein, each of said plurality of permalloy layers being 2000 .ANG. or less thick, and a Co-Cr vertical magnetization film formed on the permalloy film directly or through another non-magnetic layer.

Abstract: Contactless two-line type timer circuit operable stably for a load of even a small current. In the circuit comprising substantially a full-wave rectifying circuit connected through the load to AC source, a thyristor connected across output terminals of the rectifying circuit and means for applying pulses to the gate of the thyristor after a predetermined time period, a first resistance is inserted between the cathode of the thyristor and negative side output terminal of the rectifying circuit and a second resistance is inserted between the gate of the thyristor and said negative side output terminal so as to allow the thyristor to be of a lower gate sensitivity and to be capable of keeping the gate voltage of the thyristor always larger than the cathode voltage.