摘要:
A magnetic recording medium includes a tape-shaped nonmagnetic support, and a vertical magnetic layer formed on a main surface of the nonmagnetic support by a vacuum thin-film forming technique, signals being recorded on and reproduced from the vertical magnetic layer in a linear system. In the magnetic recording medium, the dipulse ratio of the vertical recording layer is 0.36 or more.
摘要:
A magnetic recording medium includes a tape-shaped nonmagnetic support, and a vertical magnetic layer formed on a main surface of the nonmagnetic support by a vacuum thin-film forming technique, signals being recorded on and reproduced from the vertical magnetic layer in a linear system. In the magnetic recording medium, the dipulse ratio of the vertical recording layer is 0.36 or more.
摘要:
A lower magnetic layer magnetized and formed in a first direction and an upper magnetic layer magnetized and formed in a second direction opposite to the lower magnetic layer are laminated on a base. A ratio T1/T2 of a thickness T1 of the upper magnetic layer to a thickness T2 of the lower magnetic layer is located within a range of 0.6 to 0.9. Thus, in a herringbone type dual evaporated tape in which data is recorded and reproduced in a serpentine fashion, a vertical magnetization component is canceled to reduce the difference in the waveform distortion of a reproducing signal between a forward direction and a reverse direction.
摘要:
A lower magnetic layer magnetized and formed in a first direction and an upper magnetic layer magnetized and formed in a second direction opposite to the lower magnetic layer are laminated on a base. A ratio T1/T2 of a thickness T1 of the upper magnetic layer to a thickness T2 of the lower magnetic layer is located within a range of 0.6 to 0.9. Thus, in a herringbone type dual evaporated tape in which data is recorded and reproduced in a serpentine fashion, a vertical magnetization component is canceled to reduce the difference in the waveform distortion of a reproducing signal between a forward direction and a reverse direction.
摘要:
There is provided a semiconductor device manufacturing method for forming a step-shaped structure in a substrate by etching the substrate having thereon a multilayer film and a photoresist film on the multilayer film and serving as an etching mask. The multilayer film is formed by alternately layering a first film having a first permittivity and a second film having a second permittivity different from the first permittivity. The method includes a first process for plasma-etching the first film by using the photoresist film as a mask; a second process for exposing the photoresist film to hydrogen-containing plasma; a third process for trimming the photoresist film; and a fourth process for etching the second film by using the trimmed photoresist film and the plasma-etched first film as a mask. The step-shaped structure is formed in the multilayer film by repeatedly performing the first process to the fourth process in this sequence.
摘要:
A scanning exposure apparatus measures levels of a substrate at a predetermined position on the substrate at a first measurement point during the acceleration period and a second measurement point during the constant velocity period, obtains a correction value for a measurement error due to factors associated with acceleration based on the measurement results, corrects the measured level using the obtained correction value and exposes the substrate so that the level at a given position on the substrate becomes equal to the corrected level, when the substrate is exposed at the given position after the level is measured while the stage accelerates, and exposes the substrate so that the level at a given position on the substrate becomes equal to the measured level measured, when the substrate is exposed after the level of the substrate at the given position is measured while the stage moves at a constant velocity.
摘要:
There is provided a semiconductor device manufacturing method for forming a step-shaped structure in a substrate by etching the substrate having thereon a multilayer film and a photoresist film on the multilayer film and serving as an etching mask. The multilayer film is formed by alternately layering a first film having a first permittivity and a second film having a second permittivity different from the first permittivity. The method includes a first process for plasma-etching the first film by using the photoresist film as a mask; a second process for exposing the photoresist film to hydrogen-containing plasma; a third process for trimming the photoresist film; and a fourth process for etching the second film by using the trimmed photoresist film and the plasma-etched first film as a mask. The step-shaped structure is formed in the multilayer film by repeatedly performing the first process to the fourth process in this sequence.
摘要:
A gas laser oscillator includes a plurality of discharge tube arrays, each discharge tube array including a plurality of electrical discharge tubes, a support mechanism supporting the plurality of discharge tube arrays, and an optical part optically connecting the plurality of discharge tube arrays. The support mechanism includes a discharge tube linking holder and an elastic member. The elastic member joins the discharge tube linking holder to a first support rod arranged at an upper side as seen in a direction of gravity.
摘要:
A method is provided for manufacturing a wide band retardation plate which gives uniform phase difference characteristics to incident light over the whole visible wavelength region, and which, as it permits selection of raw materials regardless of whether they have a positive or negative intrinsic double refraction value, allows a wide selection of raw materials. For this purpose, the method comprises a machine direction-stretched film-forming step for transporting and stretching in an identical direction to the transport direction, a Material A of two or more materials having different positive intrinsic double refraction values to form a machine direction-stretched film, a transverse direction-stretched film-forming step for transporting and stretching in a perpendicular direction to the transport direction, a Material B of the aforesaid two or more materials to form a transverse direction-stretched film, and a lamination step for laminating the machine direction-stretched film and the transverse direction-stretched film.
摘要:
An electronic camera includes an imaging device. The imaging device has an imaging surface on which an object scene is captured and repeatedly outputs an object scene image. To the object scene, a plurality of evaluation groups are allocated. Moreover, each of the plurality of evaluation groups is formed by a plurality of evaluation areas. A CPU calculates an evaluation coefficient representing a motion of an object in each of the plurality of evaluation areas, based on the object scene image outputted from the imaging device. The CPU also specifies one of more evaluation groups to which an evaluation area corresponding to an evaluation coefficient exceeding a reference value belongs, and compares a pattern of the specified evaluation groups with a plurality of predetermined patterns. An imaging parameter is adjusted based on a comparison result.