摘要:
There is provided an optical recording medium having, on a substrate, a visible information recording layer including a dye compound represented by Formula (1). In Formula (1), Ra1, Ra2, Ra3, Rb1, Rb2 and Rb3 each independently represent a hydrogen atom, or a monovalent substituent (Ra2 and Ra3 may bonded to each other to form a 5-membered to 7-membered heterocyclic ring), A represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic ring group, and n represents 0, 1, 2 or 3.
摘要:
The optical recording medium comprises a visible information recording layer comprising at least two dyes of the following dyes. Ra1 to Rb3 each independently denote a hydrogen atom or a monovalent substituent, Ra2 and Ra3 may bond together to form a five to seven-membered heterocyclic ring, A denotes a substituted or unsubstituted aliphatic group, substituted or unsubstituted aryl group, or substituted or unsubstituted heterocyclic group, n denotes 0, 1, 2, or 3. In general formula (II), Rα1 to Rα8 and Rβ1 to Rβ8 each independently denote a hydrogen atom or a monovalent substituent, M denotes two hydrogen atoms, a metal, a metal oxide, or a metal having a ligand. A1═N—B1 General formula (III) A1 denotes a substituted or unsubstituted heterocyclic group, a substituted aliphatic group, or a substituted or unsubstituted carbocyclic group, and B1 denotes a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted aryl group.
摘要:
A resist pattern forming method includes: in the following order, (1) a step of forming a film on a substrate by using a positive resist composition; (2) a step of exposing the film; and (4) a step of performing development by using an alkali developer after the exposing, wherein the positive resist composition contains (A) a polymer compound having a repeating unit represented by the following formula (I) as defined in the specification, a thickness of the film formed in the step (1) is from 15 to 40 nm, and an alkali component concentration in the alkali developer is from 0.5 to 1.1 mass %.
摘要:
The present invention provides an optical disc on which a visible image can be formed by irradiation of laser light, which comprises a logo area on which visible information is indicated, a pre-pit signal area, and an image forming area on which a visible image can be formed by irradiation of laser light; and an image forming method of forming a visible image by irradiation of laser light on an optical disc, the method including detecting a pre-pit signal from a pre-pit signal area formed on the optical disc, and forming the visible image based on the result of the detection, wherein the optical disc is the optical disc of an aspect of the invention.
摘要:
The invention provides an optical disc capable of recording and reproducing information using laser light. Specifically, the invention provides an optical disc on which a drawing of a visible image can be also performed using laser light, a stamper suitable for manufacturing the optical disc, a method for manufacturing the optical disc, a signal processing method that can be used in the optical disc, a signal processing apparatus, an image drawing method, an optical disc recording apparatus, and an optical recording medium.
摘要:
In a method of producing a stamper for roughening a substrate of an optical recording medium, a masking treatment is carried out prior to a blasting treatment, whereby a second pit forming site of a metal plate is protected such that the second pit forming site is not broken in the following blasting treatment. A mask of an adhesive sheet is attached to the second pit forming site in the masking treatment, and then a part of one major surface of the metal plate, exposed between the mask, is roughened in the blasting treatment. An original stamper of the metal plate, having a partly roughened major surface, is obtained by the blasting treatment.
摘要:
An optical information recording medium is composed of a substrate, a recording dye layer on which information can be recorded by irradiation with a laser beam, and a light-reflecting layer overlaid in order, in which the recording dye layer employs a dye having an organic counter ion (such as a cyanine dye of the formula (I): [DYE+]nXn− (I) in which DYE+ is a monovalent cyanine dye cation, n is an integer not less than 2, and Xn− is an organic n-valent anion), and the light-reflecting layer is made of Ag or Ag-containing alloy.
摘要:
An optical pickup is opposed to an inner-radius portion of an optical disc that is set, and pits (a modulation signal) are read by applying laser light for a DVD to the inner-radius portion. The read-out modulation signal is decoded by inputting it to a CD decoder. If decoded disc information includes particular verification data, the optical disc is judged to be a legitimate optical disc of a particular type and formation of a visible image on the label surface is permitted.
摘要:
When an optical disk image forming device forms an image on an optical disk, the image forming device reads information of kinds of coloring matters used in an image forming area from information described in an information area of the optical disk. Then, the optical disk image forming device reads from a table laser power strength information corresponding to the information of the kinds of the coloring matters and a maximum linear velocity (Nx) at the time of forming the image and applies a laser beam having this laser power strength to form the image on the image forming area of the optical disk. Thus, since the discoloration of the coloring matter in the image forming area is always saturated, the image having a constant contrast can be formed on the image forming area of the optical disk.
摘要:
A method of producing a stamper for roughening a substrate of an optical recording medium contains the steps of placing a conductive ring having a hole at the center thereof on a major surface of an original metal plate, electroforming a metal layer over a portion of the metal plate exposed in the hole of the conductive ring, an inner end-face of the conductive ring, and a portion of a major surface of the conductive ring, and entirely or partly roughening a major surface of the metal layer by a blasting treatment to obtain an original stamper.