Abstract: A nanoimprinting mold having high durability enables reduction of thickness fluctuations in resist. The mold is equipped with a patterned base plate having a patterned region, in which a fine pattern of protrusions and recesses is formed, on a first surface thereof, and a second surface having a 3? value related to a height difference distribution within a range from 1 nm to 6 nm; a hollowed base plate having a hollowed shape at least at a portion corresponding to the patterned region and a thickness greater than or equal to that of the patterned base plate; and a metal film formed between the patterned base plate and the hollowed base plate so as to bond the second surface of the patterned base plate and a surface of the hollowed base plate that faces the second surface.

Abstract: To provide a pattern forming method including: providing an active species supply source to at least one of a mold structure having a plurality of concave portions in its surface, and an object to be patterned; pressing the side of the mold structure, where the concave portions are provided, against the object so as to encapsulate the active species supply source in the concave portions; and oxidatively decomposing parts of the object which are in positions corresponding to the concave portions, by irradiating the active species supply source with excitation light through one of the mold structure and the object.

Abstract: Volatilization of a photocuring composition is suppressed while reducing residual gas in a nanoimprinting method. A nanoimprinting method transfers the shapes of protrusions and recesses of a mold onto a photocuring composition layer formed on a substrate, by placing the mold and the photocuring composition layer in close contact. One or both of the mold and the substrate is formed by quartz. The mold and the substrate are placed in close contact with a gas having at least 70% He by volume and a pressure within a range from 10 kPa to 90 kPa interposed therebetween.

Abstract: The disclosed nanoimprinting method suppresses fluctuations in thickness of residual film and defects due to residual gas in a resist film, onto which a pattern of protrusions and recesses is transferred, in a nanoimprinting method that employs the ink jet method to coat a substrate with droplets of resist material. Droplets are coated onto a substrate such that the spaces between the droplets along an A direction which is substantially parallel to the direction of the lines of a linear pattern of protrusions and recesses are longer than the spaces between the droplets in a B direction which is substantially perpendicular to the A direction, in a nanoimprinting method that coats a substrate with the droplets of a resist material using the ink jet method.

Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.

Abstract: A friction couple including a frictionally rubbing member that contains at least one of a binder and a filler, in which the binder and the filler have a modulus of elasticity of 1 GPa or higher and 15 GPa or lower, no softening point or no glass transition point in the range of ?50° C. or higher and 200° C. or lower, and a compressive strength of 50 MPa or higher at 25° C. and 25 MPa or higher at 200° C.; and a frictionally rubbed member. The ratio of the maximum value tan ?(Max) to the minimum value tan ?(Min) of the loss tangent tan ? of the frictionally rubbing member obtained through a dynamic viscoelastic measurement performed at a frequency of 0.1 Hz or higher and 20 Hz or lower and in the range of ?50° C. or higher and 250° C. or lower after thermoforming is 5 or less.

Abstract: To provide a pattern forming method, which contains: providing an active species-supplying source to a pattern formable body; and applying excitation light to the active species-supplying source to form an oxide film on a surface of the pattern formable body.

Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.

Abstract: To provide a mold structure used to produce a discrete track medium, including in a surface of the mold structure: a plurality of line pattern forming concave portions which are positioned so as to be adjacent and substantially parallel to each other; and a communicating concave portion which is positioned so as to intersect the line pattern forming concave portions and connects the line pattern forming concave portions.

Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.

Abstract: To provide a mold structure used to produce a discrete track medium, including in a surface of the mold structure: a plurality of line pattern forming concave portions which are positioned so as to be adjacent and substantially parallel to each other; and a communicating concave portion which is positioned so as to intersect the line pattern forming concave portions and connects the line pattern forming concave portions.

Abstract: A friction couple including: a first friction member that contains a metallic material and includes a first friction surface; and a second friction member that includes a second friction surface that contacts the first friction surface and that contains an oxidation film developer that accelerates formation of an oxidation film on at least one of the first friction surface and the second friction surface by oxidizing the metallic material when the first friction surface and the second friction surface contact each other.

Abstract: The present invention provides a method of initializing a perpendicular magnetic recording medium in which a magnetic field having a magnetic field strength Hex is applied to a perpendicular magnetic recording medium having a magnetic layer having a coercive force Hc to initialize the magnetic layer, the method comprising the steps of: controlling a magnetic field strength HexP in a direction parallel to the medium surface of the magnetic field so that HexP>1.3×Hc; and controlling a magnetic field strength HexV in a direction perpendicular to the medium surface of the magnetic field so that HexV<Hc.

Abstract: To provide a pattern forming method including: providing an active species supply source to at least one of a mold structure having a plurality of concave portions in its surface, and an object to be patterned; pressing the side of the mold structure, where the concave portions are provided, against the object so as to encapsulate the active species supply source in the concave portions; and oxidatively decomposing parts of the object which are in positions corresponding to the concave portions, by irradiating the active species supply source with excitation light through one of the mold structure and the object.

Abstract: The present invention provides a master disk for magnetic transfer which has a disk-like outer shape and in the surface of which a large number of fine magnetic layer patterns are formed, wherein the relationship between the outside diameter size d (mm) of the extreme outer circumference of the magnetic layer pattern and the master disk thickness t (mm) is given by 2.04×10?3×d+0.006?t?8.15×10?3×d+0.024, in order to exclude the effects of bows, strains and thickness deviations of a master disk in performing magnetic transfer and ensure that accurate transfer of magnetization patterns can be performed.

Abstract: The present invention provides an imprint mold structure which can efficiently and uniformly transfer a pattern by enhancing flow of a composition of the imprint resist layer when the imprint mold structure is pressed against the imprint resist layer, an imprinting method of improved transfer accuracy by using the imprint mold structure, and a magnetic recording medium of improved recording and reproduction property. Provided is an imprint mold structure in which at at least any one of an inner circumferential edge and an outer circumferential edge of the concavo-convex patterns in a data area and a servo area of the disc-shaped substrate of the imprint mold structure a dummy pattern is formed which corresponds to a pattern on a magnetic recording medium substrate extending radially from at least any one of an inner circumferential edge and an outer circumferential edge of a pattern forming area.

Abstract: Provided is a method of magnetic transfer. The method includes initially DC-magnetizing a transfer-recipient disc in a circumferential direction, by applying a magnetic field to the transfer-recipient disc in the circumferential direction thereof bringing initially DC-magnetized transfer-recipient disc and a master disc into close contact with each other, on the top side of the master disc a magnetic layer including a great number of protrusions that configure a magnetic pattern being formed; and executing magnetic transfer in such a way that a magnetic-field generation device is provided, and that, when a magnetic field is applied in a circumferential direction to the transfer-recipient disc and the master disc, transfer of the magnetic pattern of the master disc onto the transfer-recipient disc occurs.

Abstract: The present invention provides a method of initializing a perpendicular magnetic recording medium in which a magnetic field having a magnetic field strength Hex is applied to a perpendicular magnetic recording medium having a magnetic layer having a coercive force Hc to initialize the magnetic layer, the method comprising the steps of: controlling a magnetic field strength HexP in a direction parallel to the medium surface of the magnetic field so that HexP>1.3×Hc; and controlling a magnetic field strength HexV in a direction perpendicular to the medium surface of the magnetic field so that HexV<Hc.

Abstract: A friction device includes at least one pair of sliding surfaces which are brought into contact with each other. The friction device comprises a friction material containing silicon carbide, and a mate material in which a cermet layer containing tungsten carbide is formed in a sliding surface of the mate material.

Abstract: The present invention provides a disk-shaped magnetic recording medium in which a servo signal for tracking is recorded as a preformat by a magnetic transfer method. This disk-shaped magnetic recording medium facilitates the manufacture of a master disk which carries information to be transferred. The disk-shaped magnetic recording medium permits the asymmetry of a regenerative signal of a servo signal for tracking which is recorded, facilitates the manufacture of a master disk which carries information to be transferred, and enables a servo signal for tracking to be recorded in a short time by use of a magnetic transfer method.