Abstract: A laminated resin film includes: a resin layer; and a Cu film provided on one surface or both surfaces of the resin layer, in which in the Cu film, a peak intensity y of a (200) plane is 2 to 30 when a peak intensity of a (111) plane in X-ray diffraction measurement is set to 100, and Expression (1) is satisfied. y?2.5×?7.5??Expression (1) (in Expression (1), y is the peak intensity of the (200) plane when the peak intensity of the (111) plane in the X-ray diffraction measurement is set to 100, and x is a peak intensity of a (220) plane when the peak intensity of the (111) plane in the X-ray diffraction measurement is set to 100.

Abstract: A laminated resin film includes: a resin layer; and a Cu film having on one surface or both surfaces of the resin layer, in which in the Cu film, an orientation index of a plane is 0.15 or more according to a Lotgering method, a half-width of an X-ray diffraction peak obtained by X-ray diffraction measurement of the plane is 0.3° or less, and Expression (1) is satisfied. y>3.75x?0.675 ??Expression (1) (in Expression (1), Y is the orientation index of the plane in the Cu film according to the Lotgering method, and x is the half-width of the X-ray diffraction peak obtained by the X-ray diffraction measurement of the plane in the Cu film.

Abstract: An electrode for power storage devices includes: a resin layer having a first surface and a second surface that is located on an opposite side from the first surface; a first electrically-conductive layer that is disposed on the first surface side of the resin layer; and a first layer of particles that is disposed on an opposite side of the first electrically-conductive layer from the resin layer. In a cross section parallel to a thickness direction of the resin layer, the first electrically-conductive layer has a first shape including a plurality of protrusions that are convexed toward the resin layer and a recess that is disposed between two adjacent protrusions among the plurality of protrusions. A distance H along the thickness direction from one of top points of the two adjacent protrusions to a bottom point of the recess is smaller than a thickness of the resin layer.

Abstract: There is disclosed an optical recording medium having at least a recording layer provided on a light-transmissive substrate having grooves and lands with prepits, wherein said lands are generally rectangular or trapezoidal in cross section having a top surface and sidewalls, as well as a specified land height (h1), and said prepits are formed in a land in the center area of the land in a width direction thereof, and spaced from the adjacent grooves by boundary walls of a specified height (h2). The optical recording medium permits address information and disc rotation control information to be accessed accurately even if a track pitch is small, and which still can be manufactured efficiently, with the added capability of signal recording in high density and reproduction of high-quality signals.

Abstract: An optical information medium includes a substrate and a recording layer formed on the substrate. The recording layer includes a first recording film formed of a first material that has Si as a main constituent and a second recording film that is formed of a second material that has Cu as a main constituent and to which Ni is added, the second recording film being formed in a periphery of the first recording film. Data is recorded onto and reproduced from the recording layer by irradiation of the recording layer with a laser beam.

Abstract: An optical information medium includes a substrate and a recording layer formed on the substrate. The recording layer includes a first recording film formed of a first material that has Si as a main constituent and a second recording film that is formed of a second material that has Cu as a main constituent and to which In is added, the second recording film being formed in a periphery of the first recording film. Data is recorded onto and reproduced from the recording layer by irradiation of the recording layer with a laser beam.

Abstract: An optical information medium includes a substrate and a recording layer formed on the substrate. The recording layer includes a first recording film formed of a first material that has Si as a main constituent and a second recording film that is formed of a second material that has Cu as a main constituent and to which Sn is added, the second recording film being formed in a periphery of the first recording film. Data is recorded onto and reproduced from the recording layer by irradiation of the recording layer with a laser beam.

Abstract: There is disclosed an optical recording medium having at least a recording layer provided on a light-transmissive substrate having grooves and lands with prepits, wherein said lands are generally rectangular or trapezoidal in cross section having a top surface and sidewalls, as well as a specified land height (h1), and said prepits are formed in a land in the center area of the land in a width direction thereof, and spaced from the adjacent grooves by boundary walls of a specified height (h2). The optical recording medium permits address information and disc rotation control information to be accessed accurately even if a track pitch is small, and which still can be manufactured efficiently, with the added capability of signal recording in high density and reproduction of high-quality signals.

Abstract: There is disclosed an optical recording medium having at least a recording layer provided on a light-transmissive substrate having grooves and lands with prepits, wherein said lands are generally rectangular or trapezoidal in cross section having a top surface and sidewalls, as well as a specified land height (h1), and said prepits are formed in a land in the center area of the land in a width direction thereof, and spaced from the adjacent grooves by boundary walls of a specified height (h2). The optical recording medium permits address information and disc rotation control information to be accessed accurately even if a track pitch is small, and which still can be manufactured efficiently, with the added capability of signal recording in high density and reproduction of high-quality signals.

Abstract: A multi-level optical recording medium according to the present invention is a multi-level optical recording medium (1) which is capable of recording record data according to multi-level recording that defines light reflection ratios of recording portions (12) into multiple levels by switching the irradiation amount of a recording laser beam between multiple levels, wherein light reflection ratio information enabling identification of a light reflection ratio dynamic range within which respective light reflection ratios of the recording portions (12) should be included is readably recorded.

Abstract: A method is provided for recording data in a write-once type optical recording medium which can record data by forming a recording mark having a desired length and reduce jitter of a reproduced signal. The method comprises determining a pulse train pattern so that a level of a pulse is switched from the level corresponding to the level of the recording power Pw to the level corresponding to the level of the bottom power Pb in accordance with the length of a blank region to be formed immediately after formation of a first recording mark and the length of a second recording mark formed subsequent to the formation of the first recording mark.

Abstract: There is disclosed an optical recording medium having at least a recording layer provided on a light-transmissive substrate having grooves and lands with prepits, wherein said lands are generally rectangular or trapezoidal in cross section having a top surface and sidewalls, as well as a specified land height (h1), and said prepits are formed in a land in the center area of the land in a width direction thereof, and spaced from the adjacent grooves by boundary walls of a specified height (h2). The optical recording medium permits address information and disc rotation control information to be accessed accurately even if a track pitch is small, and which still can be manufactured efficiently, with the added capability of signal recording in high density and reproduction of high-quality signals.

Abstract: A reproduction method for a multi-level optical recording medium according to the present invention rotates an optical recording medium, on which recording data has been recorded according to a multi-level recording method which sets several levels for light reflectivity of virtual recording cells, emits a reproduction laser beam towards the optical recording medium, and reproduces the recording data based on an electric signal generated in accordance with a received level of reflected light, the method setting the emission power of the reproduction laser beam in a range of 1.0 mW to 2.5 mW inclusive when the optical recording medium is rotated at a linear velocity in a range of 9 m/s to 25 m/s inclusive. By doing so, it is possible to improve the read accuracy for recording data while suppressing the reproduction deterioration of the optical recording medium to a level where deterioration effectively does not occur.

Abstract: On a recording layer (12) of a disc-shaped optical recording medium (10), a plurality of virtual recording cells (40) are assumed contiguously in a spiral or concentric fashion in a groove (16). The irradiation time of the laser beam is modulated in five stages or more for each of the virtual recording cells (40) in response to information to be recorded, thereby forming recording marks (48A to 48G) of different sizes in five stages or more. The optical reflectivity of the virtual recording cell (40) is modulated in multi-stages to thereby vary the reflection level of a reading laser beam for reading operations in five stages or more. The length of the virtual recording cells (40) in the rotational direction of the disc is set to be equal to that of an arc having the same center angle with respect to the center of the disc.

Abstract: An optical multi-level recording medium, having a recording layer on which a recording mark is formed by irradiating a laser beam, plural virtual recording cells being continuosly formed in a relative moving direction to the laser beam on the recording layer with an arbitrary unit length and a unit width, five stages or more irradiation times being set so that the irradiation time becomes long successively from the first to final stages, a power average value of laser beam in a specific irradiation time of the plural-stage irradiation times being set so as to become larger than a power average value of another irradiation time longer than the specific irradiation time, and recording marks being formed in the virtual recording cell and giving five stages or more different optical reflectance when the laser beam is irradiated to the virtual recording cell.

Abstract: An optical recording medium can be recorded at a high linear velocity of at least 10 m/s while maintaining an excellent light stability and favorable reflectance. A recording medium is constructed of a recording layer on a substrate, the recording layer including a first dye with a maximum absorption wavelength in a thin-film state of 450 nm to 620 nm inclusive as a first dye and being formed so as to include a second dye with an extinction coefficient of at least 0.5 for a recording wavelength. In this case, it is preferable for the second dye to have a maximum absorption wavelength of 620 nm to 750 nm inclusive in a thin-film state.

Abstract: An optical recording method for irradiating an optical recording medium 10 with a laser beam to form recording marks 48A to 48G. The method includes defining contiguously a virtual recording cell 40 in a displacement direction S on the recording layer 12, setting reference irradiating time with the laser beam to five stages or more, and defining a predetermined waiting time in a neighboring subsequent virtual recording cell 40, corresponding to the length of the reference irradiating time in the preceding virtual recording cell 40. The method also includes setting actual irradiating time by subtracting the waiting time from the reference irradiating time for irradiation of the aforementioned subsequent virtual recording cell 40.

Abstract: It is an object of the present invention to provide a method for recording data in a write-once type optical recording medium which can record data by forming a recording mark having a desired length and reduce jitter of a reproduced signal.

Abstract: An optical recording medium having a higher improved read accuracy is disclosed. In the case of irradiating a laser beam to an optical recording medium including an optical reflective layer and a recording layer so as to record information therein, in the recording layer, a virtual recording cell having an arbitrary unit length and a unit width perpendicular to the unit length is continuously defined. In the case where the laser beam is irradiated to the virtual recording cell over the entire allowable irradiation time T securable to one virtual recording cell, a reference power of the laser beam is preset so that an optical reflectance of the virtual recording cell can be reduced more than 50% with respect to the initial reflectance.

Abstract: An optical recording medium can be recorded at a high linear velocity of at least 10 m/s while maintaining an excellent light stability and favorable reflectance. A recording medium is constructed of a recording layer on a substrate, the recording layer including a first dye with a maximum absorption wavelength in a thin-film state of 450 nm to 620 nm inclusive as a first dye and being formed so as to include a second dye with an extinction coefficient of at least 0.5 for a recording wavelength. In this case, it is preferable for the second dye to have a maximum absorption wavelength of 620 nm to 750 nm inclusive in a thin-film state.