摘要:
A magnetic recording medium and a method for manufacturing the same are provided, which provide high surface recording density and high recording/reading performance. The magnetic recording medium is manufactured by forming an intermediate protective layer between a continuous recording layer and a first mask layer, dividing the continuous recording layer to form divided recording elements, and then removing the first mask layer while leaving the intermediate protective layer on the top of the divided recording elements. Further, gaps between the divided recording elements are filled with a non-magnetic material before removing the first mask layer.
摘要:
A production method and a production apparatus for a magnetic recording medium, which enable the efficient production of a discrete type magnetic recording medium, while reliably preventing any deterioration of the partitioned recording elements. The magnetic recording medium production apparatus includes: recording layer processing device, which by forming a plurality of grooves, with a spacing therebetween in a planar direction, in an intermediate product of a magnetic recording medium comprising a continuous recording layer, partitions the continuous recording layer into a plurality of partitioned recording elements; non-magnetic body filling device for filling the grooves between the partitioned recording elements with a non-magnetic body; smoothing device for smoothing the surface of the partitioned recording elements and the non-magnetic body; protective layer formation device for forming a protective layer on the partitioned recording elements and the non-magnetic body; and vacuum retention device which houses the recording layer processing device, the non-magnetic body filling device, the smoothing device, and the protective layer formation device, and maintains the environment surrounding the intermediate product in a state of vacuum.
摘要:
A magnetic recording medium is provided which includes a recording layer formed in a concavo-convex pattern including recording elements formed as convex portions, provides a good flying performance of a magnetic head, and has high reliability. A magnetic recording and reproducing apparatus including that magnetic recording medium and a manufacturing method of that magnetic recording medium are also provided. The magnetic recording medium includes: the recording layer formed in a predetermined concavo-convex pattern over a substrate, the recording elements being formed as convex portions of the concavo-convex pattern; filling elements with which concave portions between the recording elements are filled; a conductive film which has a smaller electric resistivity than the filling elements and is formed over the filling elements; and a protective layer which covers the recording elements and the filling elements and is in contact with an upper surface of the conductive film.
摘要:
Liquid nitrogen is filled in a low temperature vessel; an ejector that sucks liquid nitrogen by blowing a cooling agent (liquid or gas) such as low temperature helium gas or liquid helium of pressure higher than in the space within the vessel is disposed in the vessel; the liquid nitrogen blown with the cooling agent is cooled by the cooling agent to become fine particles of solid nitrogen which fall down; and gas in a space of the vessel is discharged out of the vessel so as to maintain the pressure of the space higher than the atmospheric pressure. A gaseous phase of liquid nitrogen in an adiabatic vessel is depressurized to vaporize nitrogen in a liquid phase so that a temperature of the nitrogen is reached to the triple point of nitrogen by lowering temperature thereby and solid nitrogen is produced by keeping at the triple point, and that the produced solid nitrogen is transformed into slush by stirring the content of the adiabatic vessel. In a method for cooling a super conductive body in which a material showing a state of super conductance in the vicinity of the temperature of liquid nitrogen or of the temperature liquid nitrogen and solid nitrogen coexist is used, a method for cooling a super conductive body characterized in that the super conductive body is immersed in slush nitrogen held in an adiabatic vessel, and that the body is contacted with slush nitrogen to cool.
摘要:
In an automatic deboning apparatus, an X-ray irradiation unit is provided on the upstream side of a meat cutting unit in a direction of transport of the work. In the X-ray irradiation unit, an X-ray r is irradiated to a work w from an X-ray irradiation device, an image of the X-ray transmitted through the work is subjected to image processing in an image analysis process unit, and two-dimensional position coordinates of a bone part are thereby obtained. In the meat cutting unit, three robot arms are provided with cutting blades. A storage unit of a controller stores three-dimensional position coordinates of a target operation course of each of the cutting blades. The target operation course is corrected on the basis of the two-dimensional position coordinates of the bone part obtained for each work in the image analysis process unit.
摘要:
Disclosed herein is a lens barrel including a lens having a reference portion, a barrel body having a supporting portion adapted to come into contact with the reference portion of the lens, and a lens holding member for holding the lens so that the lens is sandwiched between the lens holding member and the barrel body in the condition where the reference portion of the lens is biased against the supporting portion of the barrel body.
摘要:
A nuclear reactor comprises a fuel rod into which nuclear fuel is enclosed and a control rod that controls nuclear reactions of the nuclear fuel. A concentration of a neutron absorber in a primary coolant at a full power operation of the nuclear reactor, when an operation of the nuclear reactor is started, is set equal to or lower than a value that is obtained by adding a predetermined value to a value obtained by subtracting a concentration of the neutron absorber that is required for maintaining a cold shutdown state of the nuclear reactor when an operation of the nuclear reactor is started from a concentration of the neutron absorber that is required for maintaining cold shutdown of the nuclear reactor when an operation of the nuclear reactor is completed.
摘要:
The present invention may provide a lens barrel which may include a guide shaft, and a movable lens frame. The barrel may be with an image capturing optical system disposed therein. The guide shaft may be disposed in the barrel and may extend parallel to the optical axis of the image capturing optical system. The movable lens frame may be reciprocally movable along the guide shaft in the barrel and holding lenses of the image capturing optical system. The barrel may include a wall supporting the guide shaft. The wall may include a light shield member projecting therefrom along the guide shaft in covering relation to a surface of the guide shaft which faces the optical axis.
摘要:
A reliable magnetic recording medium manufacturing method is provided in which a resin material used for processing a recording layer into a concavo-convex pattern can be removed reliably. In the magnetic recording medium manufacturing method, an energy ray curable resin material is spread over a continuous recording layer. Then, a stamper having a predetermined concavo-convex pattern is brought into contact with the resin material to transfer the concavo-convex pattern to the resin material, and the resin material is irradiated with energy rays such that the irradiation energy on a portion excluding the edge portion of the resin material is greater than that on the edge portions. The curing reaction proceeds to a greater extent in the portion excluding the edge portions than in the edge portions. Then, the resin material is etched and removed such that more resin material is removed from the edge portions than from the other portion.
摘要:
A magnetic recording medium is provided, which has a recording layer formed in a concavo-convex pattern and makes it possible to obtain the stable flying characteristics of a head. In the magnetic recording medium, concave portions between recording elements are filled with a non-magnetic material. Thus, the surface of the magnetic recording medium takes a concavo-convex shape which is different from the concavo-convex pattern of the recording layer. Also, the arithmetical mean deviation of the assessed profile of the concavo-convex shape in the surface is restricted to 1 nm or less.