Entries |
Document | Title | Date |
20080198738 | Thin film structure with controlled lateral thermal spreading in the thin film - An apparatus includes a magnetic layer, a heat sink layer, and a thermal resistor layer between the magnetic layer and the heat sink layer. The apparatus may be configured as a thin film structure arranged for data storage. The apparatus may also include an interlayer positioned between the magnetic layer and the thermal resistor layer. | 08-21-2008 |
20080205256 | OPTICAL RECORDING MEDIUM, AND RECORDING METHOD AND RECORDING APPARATUS FOR OPTICAL RECORDING MEDIUM - In an optical recording medium having a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, an optimum recording power to each of the recording layers can be determined. The optical recording medium has a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, and each of the recording layers has a power calibration area (PCA) for optimizing the intensity of the laser beam. | 08-28-2008 |
20080219142 | Multi layer optical disc and optical disc apparatus capable of coping with the multi layer optical disc - It is an object of the invention to provide a multi layer optical disc that can be used effectively and an optical disc apparatus that can cope with the multi layer optical disc. The object described above can be accomplished by providing redundancy to the number of layers of the multi layer optical disc. The object can also be accomplished by providing reproducing/recording unit of the multi layer optical disc to the optical disc apparatus. | 09-11-2008 |
20080219143 | MULTI-LAYERED INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, AND RECORDING METHOD - A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium. | 09-11-2008 |
20080247305 | OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING METHOD, AND OPTICAL INFORMATION RECORDING APPARATUS - An information recording medium according to the present invention includes a plurality of recording layers, and a test area for determining a recording power of a laser light for each of the plurality of recording layers, in which a first test area of a first layer and a second test area of a second layer adjacent to the first layer are provided at different radial positions. | 10-09-2008 |
20080253272 | REWRITABLE OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH A MEDIUM - A description is given of a phase-change optical data storage medium ( | 10-16-2008 |
20080279088 | Record Carrier and Method of Recording an Image - A record carrier ( | 11-13-2008 |
20080291815 | Topographical surface label formed in an optical disk substrate - The disclosure is directed to an optical disk with a topographical surface. The topographical surface may be formed in the optical disk to create an aesthetic label for the optical disk. The topographical surface may include raised features that refract, diffuse, reflect, or diffract light that makes images of the label viewable to a user. The topographical surface may be at least partially radially coincident with a data surface of the optical disk. An optical disk that includes a topographical surface as the label may not require an additional layer or process to create the label. In some examples, the topographical surface may include raised features of high spatial frequency and configured to create a hologram label that displays images to the user. | 11-27-2008 |
20090003191 | Common Mode Noise Filter - A common mode noise filter includes a nonmagnetic layer, first and second magnetic layers sandwiching the nonmagnetic layer between the magnetic layers and contacting the nonmagnetic layer, a plane coil provided between the first and second magnetic layers and contacting the nonmagnetic layer, and an external electrode connected electrically with the plane coil. The first and second magnetic layers include a magnetic oxide layer and an insulator layer provided on the magnetic oxide layer. The insulator layer contains glass component. This common mode noise filter has a large bonding strength between the external electrode and the insulator layer. | 01-01-2009 |
20090016207 | Recording Device with a Porous Heat Barrier - This invention relates to a recording medium comprising: | 01-15-2009 |
20090016208 | Storage Medium comprising a security feature and method for producing a storage medium comprising a security feature - The invention relates to a storage medium comprising a security feature, having a substrate ( | 01-15-2009 |
20090022047 | OPTICAL RECORDING MEDIUM AND METHOD OF RECORDING VISIBLE INFORMATION - The optical recording medium comprises a visible information recording layer comprising at least two dyes of the following dyes. | 01-22-2009 |
20090040916 | Mobile Drive Optical Medium - A recording layer is described that is at least partially or entirely positioned at a distance T | 02-12-2009 |
20090046566 | RECORDING LAYER FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM, AND SPUTTERING TARGET FOR OPTICAL INFORMATION RECORDING MEDIUM - Provided is a recording layer for optical information storage media, which not only excels in initial reflectivity and creativity of recording marks, but also extremely excels in durability under high temperature and high humidity conditions, and which can be adequately applied to next-generation optical discs using blue-violet laser. The recording layer for optical information storage media is a recording layer to create recording marks upon irradiation with a laser beam. This recording layer is composed of a tin-based alloy containing a total of 1.0 atomic percent or more and 15 atomic percent or less of at least one selected from neodymium (Nd), gadolinium (Gd), and lanthanum (La). | 02-19-2009 |
20090046567 | OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium, includes a disc-shaped substrate, at least one information recording layer formed over a recording/reproducing-side main surface of the substrate, a light transmitting layer formed over the information recording layer, and a protecting layer formed to cover the light transmitting layer and at least one part of a side end surface perpendicular to the main surface of the substrate. At least the part of the side end surface is covered with the protecting layer for covering the recording/reproducing-side main surface, and the surface of the protecting layer covering at least the part of the side end surface has a larger surface roughness than that of the surface of the protecting layer covering the upper of the recording/reproducing-side main surface. | 02-19-2009 |
20090073866 | Optical Information Recording Medium and Method for Manufacturing Same - The present invention provides an optical information recording medium having a substrate, a recording layer, and a reflective layer, and including a region corresponding to a burst cutting area: wherein the region has a plurality of bar recorded portions and a plurality of non bar recorded portions; and the ratio (A/B) of transmittance (A) with which the bar recorded portions transmit laser light for use in information reproduction to transmittance (B) with which the non bar recorded portions transmit the laser light is 1.5 or greater. | 03-19-2009 |
20090086615 | Ferroelectric Polarization Pattern With Differing Feedback Signals - A ferroelectric polarization pattern with differing feedback signals. An apparatus including a ferroelectric layer and a polarization pattern configured in the ferroelectric layer to represent position data. The polarization pattern has a first switchable polarization state domain and a second switchable polarization state domain that are both switchable by an applied signal. The first switchable polarization state domain has a first feedback signal in response to the applied signal that is different than a second feedback signal of the second switchable polarization state domain at the applied signal. | 04-02-2009 |
20090086616 | OPTICAL DISK AND METHOD OF MANUFACTURING THE SAME - An optical disk having a recording layer on a substrate, a bonding layer which is made of an ultraviolet cured resin bonding the recording layer, a transparent layer which is bonded to the bonding layer, and an overcoating layer which is formed on the transparent sheet and is made of the ultraviolet cured resin further has a mixed layer which is formed by mixing the ultraviolet cured resins of the bonding layer and the overcoating layer. Consequently, the bonding layer, the overcoating layer, and the mixed layer are integrally cured, so that the substrate is entirely covered with the ultraviolet cured resin having transparency, which allows a light transmitting layer A to be protected with sufficient strength. | 04-02-2009 |
20090109833 | PRINTABLE OPTICAL DISC AND MANUFACTURING METHOD THEREOF - A printable optical disc including an optical disc body, a waterproof protective film, and a first patterned layer is provided. The optical disc body has a printable surface. The waterproof protective film has an upper surface and a lower surface. The lower surface is disposed on the printable surface, and the upper surface has an optical grating pattern or a pixel pattern. The first patterned layer is disposed between the lower surface of the waterproof protective film and the printable surface. | 04-30-2009 |
20090122693 | OPTICAL RECORDING MEDIUM - An optical recording medium of improved recording and reading characteristics, having both a read-only information recording layer and an information recording layer. The optical recording medium includes information recording layers capable of recording and reading by irradiation of laser light having a wavelength λ of 400 to 410 nm through an optical system having a numerical aperture NA of 0.8 to 0.9. In this medium, the information recording layers include at least a read-only information layer having information recorded in advance and an information recording layer different from the read-only information recording layer, the read-only information recording layer being capable of information recording of write-once type or rewritable type. The read-only information recording layer is stacked closest to a light incident surface of the laser light. | 05-14-2009 |
20090196160 | Coating for Optical Discs - An energy-curable flowable coating composition comprising a surface treated inorganic nanoparticle, a photoinitiator, and at least one energy-curable monomer, oligomer or resin. The energy-curable flowable coating can be used as a covering layer of optical discs, and is especially suited for use as a 100 micron cover layer of a Blu-Ray disc, having enhanced scratch resistance and reduced shrinkage. | 08-06-2009 |
20090201793 | MASTER SUBSTRATE AND METHOD OF MANUFACTURING A HIGH-DENSITY RELIEF STRUCTURE - The present invention relates to a recording stack for obtaining a high-density relief structure, comprising: a first recording layer ( | 08-13-2009 |
20090207723 | OPTICAL DISC AND ULTRAVIOLET-CURABLE COMPOSITION FOR OPTICAL DISC - An optical disc of the present invention includes at least a light reflection layer and a light transmission layer formed on a substrate, wherein recording and reading are performed by a laser beam through the light transmission layer, the light transmission layer is formed from a cured film of a ultraviolet-curable composition containing an epoxy acrylate resin obtained by reacting a half ester compound (A), which is obtained from a lactone-adduct of a hydroxyalkyl (meth)acrylate (a1) and a dibasic acid anhydride (a2), and an epoxy resin (B), and the film thickness of the light transmission layer is from 50 to 150 μm. | 08-20-2009 |
20090207724 | Magnetic memory - A magnetic memory is provided with a memory cell. The memory cell includes a magnetic recording element, an interconnection to generate a radio-frequency current-induced magnetic field and a ground line. The magnetic recording element is provided with a first magnetic layer whose magnetization direction is substantially fixed, a magnetic recording layer whose magnetization direction is substantially reversed by spin-polarized electrons passing through the magnetic recording layer and a first nonmagnetic layer provided between the first magnetic layer and the magnetic recording layer. The interconnection is provided above the magnetic recording element to generate a radio-frequency current-induced magnetic field acting in a direction substantially perpendicular to a magnetization easy axis of the magnetic recording layer. The ground line is provided on a side opposite to the magnetic recording element with respect to the interconnection. | 08-20-2009 |
20090213720 | INFORMATION RECORDING MEDIUM, AND APPARATUSES FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF, AND METHODS FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF - An information recording medium comprises a substrate, a second recording layer, a second light transmitting layer, a first recording layer for recording different information from that to be recorded in the second recording layer, and a first light transmitting layer. The second recording layer is formed with a continuous second microscopic pattern of grooves. The first recording layer is formed with a continuous first microscopic pattern of grooves that is different from the second microscopic pattern. Both sidewalls of raised portions of the first and second microscopic patterns are formed with wobbling so as to be parallel with each other. Auxiliary information and a reference clock is recorded on these sidewalls alternately and continuously. | 08-27-2009 |
20090274034 | OPTICAL RECORDING MEDIUM, VISIBLE INFORMATION RECORDING METHOD AND METHOD FOR USING DYE COMPOUND - There is provided an optical recording medium having, on a substrate, a visible information recording layer including a dye compound represented by Formula (1). | 11-05-2009 |
20090279415 | INFORMATION RECORDING MEDIUM - In an information recording medium comprising at least a substrate, a recording layer, and a resin layer, the substrate is formed with at least a pit corresponding to a read only area | 11-12-2009 |
20090303864 | OPTICAL RECORDING MEDIUM AND REPRODUCING DEVICE - An optical recording medium is provided with a plurality of recording layers, wherein the recording layers are formed such that all the spacings between two recording layers in all the combinations selected from the plurality of recording layers do not coincide with each other. Accordingly, the return of lights reflected by other layers to an optical head along the same optical path as reflected light from a readout layer during the reproduction can be avoided. Therefore, an optical recording medium, from which a good reproduction signal can be obtained, can be provided by suppressing the deterioration of a servo signal and a reproduction signal of a reproducing device due to a variation of interference fringes on a light receiving element. | 12-10-2009 |
20090310474 | INFORMATION STORAGE MEDIUM, AND RECORDING/REPRODUCING APPARATUS AND METHOD - An information storage medium, and a recording/reproducing apparatus and method, the information storage medium including a plurality of recording layers, each layer including a lead-in area or a lead-out area, a data area, a middle area, and a dedicated area, wherein the data area is flexibly allocated according to data capacity to be recorded in each of the recording layers, the middle area is allocated behind the data area, and the dedicated area is allocated behind the middle area. The dedicated area for a special purpose may selectively be allocated in an outer circumferential area of the information storage medium, i.e., an optical disk including a plurality of recording layers. In particular, optical disks in various formats are provided in which dedicated areas for special purposes can selectively be allocated in outer circumferential areas of the optical disks depending on recording characteristics of the optical disks and the outer circumferential areas. | 12-17-2009 |
20100008212 | OPTICAL DISK - The present invention relates to an optical disc for use as a recording medium in an optical disc drive, which has a transparent protection film ( | 01-14-2010 |
20100034075 | OPTICAL DISC WITH POSTPONED VIEWING WINDOW - An optical storage medium comprising a data layer suitable to be read by means of a radiation beam in an optical scanning apparatus, and access control means for inhibiting reading of at least part of stored information for a predetermined period of time, thereby leading to a postponed viewing window. Preferably the access control means correspond to an access control layer covering at least part of the data layer, chosen to inhibit access to the data layer. The onset of the predetermined period of time may be determined by exposure of the access control layer to an activating substance. A diffusion barrier layer may control the length of the predetermined period of time. Such optical storage medium is preferably used for distributing content having a fixed release date. | 02-11-2010 |
20100061221 | SINGLE-SIDED PRE-RECORDED DUAL-LAYER DVD DISC FUNCTIONING AS A DUAL-SIDED PRE-RECORDED DVD - An optical disc structure for playback by a read-out device is described. The optical disc structure includes a first layer with first content recorded thereon. A second layer is coupled to the first layer. The second layer has first content and second content recorded thereon. The disc of the present principles makes use of the fact that a less than full capacity DVD9 disc leaves available recording space after the end of program area and required lead-out area on the second of the two data layers of a DVD9 disc. | 03-11-2010 |
20100097921 | STORAGE BOX FOR OPTICAL DISC - An optical disc ( | 04-22-2010 |
20100103808 | Optical media manufactured with low-grade materials - This disclosure describes optical media that is compatible with conventional DVD drives. Unlike conventional DVDs, however, the described media uses a lower cost, lower quality material for one of the substrates. In particular, a so-called “dummy” substrate may comprise a non-optical grade polymeric material. In some cases, the dummy substrate may include post-consumer recycled materials, such as recycled polycarbonate. In other cases, dummy substrate may comprise a low cost non-optical grade polycarbonate, such as an industrial grade polycarbonate. In still other cases, the dummy substrate may comprise a polycarbonate blend, or other non-polycarbonate materials. | 04-29-2010 |
20100103809 | OPTICAL DISC AND MANUFACTURING METHOD THEREOF - A method of manufacturing an optical disc comprises the steps of: (1) forming a substrate including an inner supporting section and an outer information recording section, the inner supporting section having a thickness larger than that of the outer information recording section; and (2) forming a vibration suppressing layer by printing UV curable paste three to five times over the surface of the non-recording side of the outer information recording section from an inner edge of the outer information recording section to a designated diameter, wherein the printed UV curable paste has a weight of 15% to 25% of the weight of the substrate, and at least 90% of the weight of the printed UV curable paste is distributed within a circular region with diameter 90 mm to 110 mm, each time the UV curable paste printed not exceeding 5% of the weight of the substrate. | 04-29-2010 |
20100157784 | MANUFACTURING METHOD FOR OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM - There is provided a manufacturing method for an optical information recording medium having three information recording layers, two intermediate layers, and one light transmitting layer, the method includes: providing a first UV curable resin on a first information recording layer; forming a first intermediate layer by curing the first UV curable resin by performing first-time UV irradiation to irradiate the first UV curable resin with UV light emitted from above the first UV curable resin at a first dose; providing a second information recording layer on the first intermediate layer; providing a second UV curable resin on the second information recording layer; forming a second intermediate layer by curing the second UV curable resin by performing second-time UV irradiation to irradiate the second UV curable resin with UV light emitted from above the second UV curable resin at a second dose; providing a third information recording layer on the second intermediate layer; providing a third UV curable resin on the third information recording layer; and forming a light transmitting layer by curing the third UV curable resin by performing third-time UV irradiation to irradiate the third UV curable resin with UV light emitted from above the third UV curable resin at a third dose, wherein the first UV curable resin and the second UV curable resin have substantially the same characteristics in terms of the relationship between total UV dose received and coefficient of linear expansion, and wherein the first dose during the first-time UV irradiation, the second dose during the second-time UV irradiation, and the third dose during the third-time UV irradiation are controlled so that a total UV dose received by the first intermediate layer and a total UV dose received by the second intermediate layer become substantially the same. | 06-24-2010 |
20100182894 | OPTICAL DATA STORAGE MEDIA CONTAINING AN ENCAPSULATED DATA LAYER - Optical information media containing encapsulated data layers are disclosed. Selective layering of materials in inner radial, middle radial, and outer radial zones allows for the faces and edges of at least the data layers to be encapsulated by other materials, resulting in increased resistance to harmful environmental agents such as oxygen and moisture. | 07-22-2010 |
20100195477 | RECORDING APPARATUS, METHOD FOR CONTROLLING THE APPARATUS, AND STORAGE MEDIUM STORING CONTROL PROGRAM - A recording apparatus to record data on a recording medium including a plurality of recording layers is provided. The recording apparatus includes a recording circuit adapted to record data on a recording layer selected from among the plurality of recording layers included on the recording medium; a recordable capacity detecting circuit adapted to detect recordable capacity of each of the plurality of recording layers; an instructing circuit adapted to provide instructions to start recording of the data; and a selecting circuit adapted to select a recording layer on which the data is to be recorded in accordance with the instructions to start recording provided from the instructing circuit based on the recordable capacity of the plurality of recording layers detected by the recordable capacity detecting circuit. | 08-05-2010 |
20100208576 | RECORDING DEVICE AND RECORDING METHOD FOR DUAL LAYER RECORDING DISC - In a first recording process, an end position of a kth cell ( | 08-19-2010 |
20100220583 | Optical data storage media and methods of formation - Provided are methods of forming multi-layered optical data storage media which include a high-density data layer, as well as multi-layered optical data storage media that can be formed by such methods. | 09-02-2010 |
20100226239 | MULTILAYER OPTICAL DISC - A multilayer optical disc which has three or more recording layers and enables easy positioning of a focused beam spot onto a particular recording layer in which a BCA is disposed. An inter-layer distance between a particular recording layer and a recording layer adjacent to the particular recording layer is larger than the other inter-layer distances in which, at the focused beam spot positioning, the focused beam spot traverses the said adjacent recording layer earlier than the other recording layer adjacent to the particular recording layer. | 09-09-2010 |
20100226240 | READ-ONLY OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium of the present invention is a read-only optical information recording medium in which at least one reflective film formed of an Al-based alloy and at least one light transmission layer are successively laminated on a substrate. The arithmetical mean roughness of the reflective film is 0.5 nm or less, and the thickness of the reflective film is 25 nm or more. The optical information recording medium of the present invention is the read-only optical information recording medium including the reflective film which has a high reflectivity and low jitter, preferably has excellent durability, and is used particularly appropriately in an optical disc using a blue laser such as BD-ROM or HD DVD-ROM. | 09-09-2010 |
20100246374 | OPTICAL INFORMATION STORAGE MEDIUM REPRODUCTION APPARATUS AND CONTROL METHOD OF THE SAME - In an optical information storage medium reproduction apparatus ( | 09-30-2010 |
20100254251 | ARTICLES INVOLVING ENCAPSULATION OF HYGROSCOPIC MATERIALS - An article involving encapsulation of one or more hygroscopic materials and manufacturing method and system thereof are provided. The article includes a first substrate, a second substrate, one or more first structures formed at a first periphery associated with the first substrate, and one or more second structures formed at a second periphery associated with the second substrate. The first structures and the second structures are engaged together mechanically to form an enclosure between the first substrate and the second substrate. The enclosure is capable of preventing exposure of a hygroscopic material encapsulated between the first substrate and the second substrate to the surrounding environment. | 10-07-2010 |
20100254252 | RECORDING MEDIUM, RECORDING APPARATUS AND RECORDING METHOD - A recording medium of the recordable type in the form of a multi-layer disc or the like which is improved in compatibility and feasibility in use and a recording apparatus and a recording method ready for the recording medium are disclosed. A region for recording interlayer folding back position information is set on the recording medium (for example, “End sector number in Layer | 10-07-2010 |
20100260035 | INFORMATION RECORDING MEDIUM AND MANUFACTURING METHOD THEREOF - An information recording medium ( | 10-14-2010 |
20100278031 | ULTRAVIOLET-CURABLE COMPOSITION FOR OPTICAL DISK AND OPTICAL DISK - With branched epoxy(meth)acrylate which comprises a phenyl skeleton serving as a stiff molecular skeleton, and which comprises in the molecular skeleton a number of branched structures capable of forming a coating structure at a high crosslinking density after ultraviolet curing, it becomes possible to design the coating hardness to be high even if the content of an acryloyl group is designed to be low to effect less crosslinking reaction induced by ultraviolet curing, and it becomes possible to relax distortions inside a cured film due to cure shrinkage which occurs at the time of ultraviolet curing. As a result, there can be realized an ultraviolet-curable composition for an optical disk which has a high elastic modulus and is less tilted at the time of curing even if the coating hardness is designed to be high. | 11-04-2010 |
20100278032 | OPTICAL INFORMATION RECORDING MEDIUM AND RECORDING/REPRODUCING METHOD THEREFOR - An optical information recording medium in which recorded information is stably stored for long time in the initial state, signals are not deteriorated by a laser beam for reproduction at the time of signal reproduction, the quality does not change in normal long-term storage, the write characteristic is held, a manufacturing cost is reduced, a margin in the manufacture process is assured, and excellent recording/reproducing characteristics are obtained in the wide range of linear speeds and recording powers is provided. An optical information recording medium | 11-04-2010 |
20110019527 | DUAL SIDED OPTICAL STORAGE MEDIA AND METHOD FOR MAKING SAME - A dual sided optical storage medium which comprises a substrate disk having a first information layer readable from one side of the medium through the substrate disk and one or more information layers formed on the non-read side of the first information layer and configured to be read from the other side of the medium. | 01-27-2011 |
20110044156 | OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - An optical information recording medium including a recording layer that can record a large amount of information is manufactured using a simple system. A single recording layer is formed by bonding two optically transparent substrates on which the first photosensitive polymer and the second photosensitive polymer are spread such that the layers of the photosensitive polymers face each other. Furthermore, since the absorptivity of light in the recording layer increases as the focal point of light for information recording moves in a depth direction, information can be recorded without decreasing the recording transfer rate of the information. | 02-24-2011 |
20110044157 | OPTICAL RECORDING MEDIUM - An optical recording medium includes: a substrate; an information recording layer that is formed on the substrate and that has a recording film, which contains Zn or Al, Pd, and oxygen and in which the amount of oxygen is larger than that in a stoichiometric composition when Zn or Al is completely oxidized to become ZnO or Al | 02-24-2011 |
20110051592 | OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS, INFORMATION RECORDING METHOD, INFORMATION REPRODUCING METHOD AND METHOD FOR PRODUCING OPTICAL INFORMATION RECORDING MEDIUM - An optical information storage medium according to the present invention has at least one information storage layer. The optical information storage medium has a management area that stores at least one unit containing control information about the optical information storage medium. The control information includes a format number, which provides information about at least a write strategy type and a write pre-compensation type, and a write strategy parameter, which provides information about the magnitude of shift in an edge position, or variation in the pulse width, of a write pulse train to form a recording mark. And the value of the format number changes according to a combination of the write strategy type and the write pre-compensation type. | 03-03-2011 |
20110069602 | PRODUCTION METHOD FOR AN OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING MEDIUM - A production method for an optical recording medium including a substrate, an information recording layer, and a light transmission layer, includes: molding the substrate; forming on the substrate the information recording layer so as to have a multilayer structure including a layer that has been sputtered under a first deposition condition and a layer that has been sputtered under a second deposition condition with use of targets of the same composition; and forming the light transmission layer on the information recording layer. | 03-24-2011 |
20110069603 | MULTILAYER INFORMATION RECORDING MEDIUM MANUFACTURING METHOD, MULTILAYER INFORMATION RECORDING MEDIUM MANUFACTURING APPARATUS, AND MULTILAYER INFORMATION RECORDING MEDIUM - The invention provides a multilayer information recording medium manufacturing method, a multilayer information recording medium manufacturing apparatus, and a multilayer information recording medium that enable to make a distance from a light incident surface of the multilayer information recording medium to a farthest information recording layer thereof uniform within a plane of the medium. A multilayer information recording medium manufacturing apparatus ( | 03-24-2011 |
20110075548 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the first light reflecting layer is smaller than the thickness of the second light reflecting layer. | 03-31-2011 |
20110080824 | SHEET FOR PRODUCING A MULTILAYER OPTICAL RECORDING MEDIUM AND MULTILAYER OPTICAL RECORDING MEDIUM - A sheet for producing a multilayer optical recording medium having a repeated structure in which a plurality of optical recording layers are laminated, wherein the sheet has a structure such that a unit comprising at least a release assisting layer, an optical recording layer having a thickness of 1 to 1,000 nm and a pressure sensitive adhesive layer are disposed on a process film, the release assisting layer is disposed on the surface of the process film, and a pressure sensitive adhesive layer is disposed as the outermost layer, and an absolute value of difference between refractive indices of the release assisting layer and the pressure sensitive adhesive layer at a wavelength of 660 nm is 0.11 or smaller; and a multilayer optical recording medium obtained by using the sheet. The sheet enables to release the process film and transfer the optical recording layer while the condition of the surface of the optical recording layer is kept excellent. The multilayer optical recording medium has a great recording density and exhibits excellent property for recording. | 04-07-2011 |
20110085435 | IMAGE RECORDING MEDIA AND IMAGING LAYERS - Imaging layers, optical disks, and methods of preparation of each, are disclosed. | 04-14-2011 |
20110085436 | IMAGE RECORDING MEDIA, METHODS OF MAKING IMAGE RECORDING MEDIA, IMAGING LAYERS, AND METHODS OF MAKING IMAGING LAYERS - Imaging layers, optical disks, and methods of preparation of each, are disclosed. | 04-14-2011 |
20110085437 | SHEET FOR MULTILAYER OPTICAL RECORDING MEDIUM AND MULTILAYER OPTICAL RECORDING MEDIUM USING THE SAME - Disclosed is a sheet for producing a multilayer optical recording medium having a repeating structure wherein a plurality of optical recording layers are laminated. The sheet for a multilayer optical recording medium has a structure having a unit wherein an optical recording layer and an adhesive layer are laminated, or a structure having a unit wherein an optical recording layer, a barrier layer and an adhesive layer are laminated in this order. The maximum height roughness (Rz) of the optical recording layer or the barrier layer is not more than 500 nm. A multilayer optical recording medium is produced by using the sheet for a multilayer optical recording medium. Also disclosed is a sheet for producing, with high precision, a high-quality multilayer optical recording medium having a repeating unit wherein a plurality of optical recording layers containing a multiphoton absorbing material are laminated. A multilayer optical recording medium is also produced by using this sheet. | 04-14-2011 |
20110096655 | FORMING LIGHT-TRANSMITTING COVER LAYER FOR RECORDING MEDIUM - An optical recording medium includes a recording layer in or on a substrate, a light-transmitting cover layer over said recording layer, and a disc rib over an outer periphery of a first side of the substrate and delimiting an outer diameter of the cover layer. | 04-28-2011 |
20110096656 | Multi-Layer Optical Disc, And Recording Method And Apparatus For Multi-Layer Optical Disc - Each layer includes a data recording area and a test writing area divided into a plurality of small areas, wherein the small areas of the test writing area are recorded in advance so that other each layer can make a combination of recorded and unrecorded states with respect to the small area, where OPC is carried out, in a layer where OPC is carried out. Moreover, OPC is carried out to each small area, where a combination of recorded/unrecorded states of other each layer differs from each other, to thereby calculate, as the optimum power, an average value of the result of each OPC or a central value of the dispersion thereof. | 04-28-2011 |
20110128841 | MULTI-SPEED RECORDING FOR MULTI-LAYER DISC - The present invention relates to a recording apparatus, record carrier and method of recording data on at least two layers of a recording medium by using a radiation power, wherein individual recording speeds are determined for respective ones of the at least two layers at different values of the radiation power. A recording speed to be used for recording on an individual one of the at least two recording layers is selected based on a maximum radiation power specified for the recording operation, and the speed of the recording operation is controlled individually for each of the at least two layers based on the selected recording speed. The determination of the individual recording speeds at different radiation power values may be written or embossed on the record carrier. Furthermore, a recording sequence used for recording on the recording layers can be set based on the sensitivities and thus recording speeds. Thereby, total recording time can be minimized for multi-layer recording media. | 06-02-2011 |
20110170401 | OPTICALLY-READABLE DISK WITH COPY PROTECTION DEVICE - An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended playing device, or for when a defined integral of velocity and time is exceeded. The device may include a fluid container that disperses a data-disruptive fluid. The device may include a membrane or layer that is disrupted when the disk is rotated above a defined angular velocity, or when a defined integral of velocity and time is exceeded. | 07-14-2011 |
20110205881 | SERIES OF OPTICAL RECORDING MEDIA - A series of optical recording media is provided to reduce a burden on an optical pickup by introducing a standardized idea among a plurality of optical recording media. In the series of optical recording media, optical recording media are of a plurality of types, each optical recording medium including a plurality of planar recording and reading layers with no projections and depressions for tracking control, and a servo layer with projections and depressions for tracking control. The plurality of optical recording media have different numbers of stacked recording and reading layers, and the positions of the servo layers with respect to the corresponding light incident surfaces are standardized among the plurality of optical recording media. | 08-25-2011 |
20110205882 | SERIES OF OPTICAL RECORDING MEDIA - A series of optical recording media is provided to reduce a burden on an optical pickup by introducing a standardized idea among a plurality of optical recording media. In the series of optical recording media, optical recording media are of a plurality of types, each optical recording medium including a plurality of planar recording and reading layers with no projections and depressions for tracking control, and a servo layer with projections and depressions for tracking control. The plurality of optical recording media have different numbers of stacked recording and reading layers. The plurality of optical recording media have different numbers of stacked recording and reading layers. The positions of the servo layers from the corresponding light incident surfaces are standardized among the plurality of optical recording media. The position of at least one recording and reading layer from the corresponding light incident surface is standardized among the plurality of optical recording media. | 08-25-2011 |
20110216643 | RECORDING LAYER FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM, AND SPUTTERING TARGET - A recording layer for an optical information recording medium, which has a high reflectance (initial reflectance) and excellent recording characteristics; an optical information recording medium comprising the recording layer; and a sputtering target useful for forming the recording layer. The recording layer for an optical information recording medium, on which recording is performed by irradiation of laser light, is characterized by containing indium (In) oxide and palladium (Pd) oxide which includes palladium monoxide and palladium dioxide. The recording layer for an optical information recording medium is also characterized in that the ratio of Pd atoms contained in the recording layer relative to the total of In atoms and Pd atoms contained therein is 6-60 atom %. | 09-08-2011 |
20110222391 | METHOD FOR MANUFACTURING MEDIUM ON WHICH INFORMATION IS RECORDED IN PIT PATTERN - A method by which depressions and projections (pit pattern) can be formed directly and easily in a substrate made of inorganic material is provided. A method for forming a medium on which information is recorded in a pit pattern comprises the steps of: forming a recording material layer ( | 09-15-2011 |
20110249547 | OPTICAL DISC - Disclosed herein is an optical disc having an information area situated between an internal edge and an external edge of the optical disc. The optical disc includes a first substrate, a second substrate, a recording layer, a reflecting layer and a number of surface structures. The second substrate is disposed over the second substrate, the recording layer and the reflecting layer are disposed between the two substrates, and the reflecting layer is disposed between the first substrate and the recording layer. The surface structures are discontinuously disposed on the surface of the second substrate. | 10-13-2011 |
20110261672 | OPTICALLY WRITABLE HOLOGRAPHIC MEDIA - An optically writable holographic card, an optically writable holographic media, and a method of making the media are herein described. The card has a media region that includes an optically writable material. The optically writable material has an holographic embossment such that an holographic image is producible by the optically writable material. The media includes an holographically embossed first layer. An optically writable, optically readable second layer conforms to the embossment. The holographic image is generable by the second layer. The method includes producing an holographic embossment associated with an holographic image. An optically writable layer is conformed to the holographic embossment. The holographic image is viewable in response to illuminating the optically writable layer. The optically writable layer is optically readable. The optically writable material on the card may support optically written digital data and an optically written image, or an optically written image having embedded digital data. | 10-27-2011 |
20120163158 | UV-CURABLE COMPOSITION FOR OPTICAL DISCS AND OPTICAL DISC - A UV-curable composition for optical discs contains a fluorine-containing UV-curable resin having a poly(perfluoroalkylene ether) chain and a UV-curable group. The fluorine-containing UV-curable resin exhibits good compatibility with the composition and satisfactorily localizes in and near a surface of a coating film. Thus, the composition can be used to form an outermost layer of an optical disc such that the droplet size of grease such as that constituting fingerprints adhering to the outermost layer is reduced and scattering of light having a short oscillation wavelength passing through the outermost layer is suppressed. Accordingly, an optical disc on and from which signals can be satisfactorily recorded and read is formed. | 06-28-2012 |
20120176883 | RECORDING LAYER FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM, AND SPUTTERING TARGET - A recording layer for optical information recording medium excellent in recording property, an optical information recording medium including the recording layer and a sputtering target useful for formation of the recording layer are provided. A recording layer for an optical information recording medium on which recording is performed through irradiation with laser light, the recording layer including an oxide of a metal of which an absolute value of the standard free energy of oxide formation per 1 mol of oxygen is larger than that of Pd (hereinafter referred to metal X) and a Pd oxide, wherein the Pd oxide includes a Pd monoxide and a Pd dioxide, and wherein a ratio of the Pd atom to a total of the metal X atom and the Pd atom which are contained in the recording layer is 4 to 85 atomic %. | 07-12-2012 |
20120201117 | MANUFACTURING METHOD OF OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM - A manufacturing method of an optical information recording medium includes forming a substrate which has a first main surface and a second main surface, forming a first information signal layer on the first main surface of the substrate, forming an intermediate layer on the first information signal layer, forming a second information signal layer on the intermediate layer, irradiating light from the second main surface side of the substrate and recording identification information on a first region out of the first region and a second region, and forming a barrier layer with regard to the second main surface in the second region which excludes the first region where the identification information is recorded before the recording of the identification information. | 08-09-2012 |
20120201118 | MULTILAYER OPTICAL RECORDING MEDIUM - An object of the present invention is to increase the number of stacked layers in a multilayer optical recording medium while simplifying the design of the multilayer optical recording medium. | 08-09-2012 |
20120213053 | SINGLE-SIDED PRINTING PROVIDING DUAL-SIDED READING OF PRINT ON OPTICAL DISCS - Disclosed is an optical disc with a first area to store data for playback and that is reflective or opaque to visible light, and a second area that is transparent to visible light and includes first and second concentric rings. In one embodiment, a method of printing information on the optical disc includes: printing an inverse first text pattern in the first ring during a first printing on a first side, where the first text pattern is formed in reverse as viewed from the first side; printing a second text pattern in the second ring during a second printing on the first side, where the second text pattern is correctly visible from the first side; and printing, during the second printing, a first solid pattern to overlay at least a portion of the first text pattern, where the first text pattern is correctly visible as viewed from a second side. | 08-23-2012 |
20120263029 | OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium ( | 10-18-2012 |
20130064063 | MASTER DISC HAVING A PTM LATER AND A NICKEL UNDERCOAT - The invention provides a master disc comprising a stack of a substrate, a phase transition material layer, a heat absorption layer provided between the substrate and the phase transition layer, and an anisotropic heat sink layer provided between the substrate and the absorption layer. Further, a method of manufacturing a master disc is provided. A stack having an upper side and a lower side is provided, wherein the stack comprises a substrate provided at the lower side of the stack, a phase transition material layer, a heat absorption layer provided between the substrate and the phase transition layer, and an anisotropic heat sink layer provided between the substrate and the absorption layer. The upper side of the stack is exposed to a laser beam and developed. | 03-14-2013 |
20130142029 | OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium has a first information recording layer ( | 06-06-2013 |
20130294216 | METHOD OF PRODUCING RECORDING MEDIUM, AND RECORDING MEDIUM - A method of producing a recording medium includes preparing a substrate of the recording medium, forming a first face recording layer at a first face side of the substrate, forming a first face protection layer for protecting the first face recording layer on the first face recording layer, forming a second face constituting whole or a part of a layer configuration at a second face side of the substrate,
| 11-07-2013 |
20140050069 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 02-20-2014 |
20140050070 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 02-20-2014 |
20140050071 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 02-20-2014 |
20140050072 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 02-20-2014 |
20140050073 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 02-20-2014 |
20140050074 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 02-20-2014 |
20140071800 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 03-13-2014 |
20160055877 | BLU-RAY DISC FROM RECYCLED DISC MANUFACTURING MATERIALS AND A METHOD OF MANUFACTURING THE SAME - A Blu-ray ray optical disc comprises a base substrate of recycled polycarbonate molded without a data layer on a first surface. The disc further includes a first transmission stack having (a) a data region layer having a first surface adjoining the first surface of the base substrate and a second, opposite surface embossed with data, and (b) a layer of metallization overlying the second surface of the data layer. Lastly, a protective layer overlies the region of metallization of the first transmission stack. | 02-25-2016 |