| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Method and tool for laser texturing of glass substrates | US290648 | 1999-04-12 | US06107599A | 2000-08-22 | Peter Baumgart; Chie Ching Poon; Andrew Ching Tam |
| Method and apparatus for laser texturing symmetrically and simultaneously both sides of a glass containing substrate, such as a magnetic disk. There are two or more acousto-optic modulators arranged in series to obtain equal laser pulses from a first beam from a laser, apparatus for capturing a first order diffracted beam from each acousto-optic modulator; monitoring the wavelength of the laser source, providing a visible indicator or diagnostic beam for each first order diffracted beam, and combining each first order diffracted beam with its respective indicator beam to form a texturing beam for texturing each side of the substrate. | ||||||
| 82 | Mold for making disc substrate, process for producing mold and disc substrate | US983243 | 1998-04-30 | US6068906A | 2000-05-30 | Takeshi Sasa; Toshihiko Takegawa; Eiki Oyanagi; Takehisa Ishida |
| A disc substrate molding metal mold apparatus adapted for molding synthetic resin material to carry out molding of disc substrate of an information signal recording medium. This metal mold apparatus is adapted so that smoothing layers of metal are integrally formed on the molding plane surface sides of a first metal mold serving as the fixed side and a second metal mold serving as the movable side which are butted to each other to constitute a molding portion for molding disc substrate, and uneven patterns corresponding to information signals, etc. formed at the disc substrate are directly formed at the metallic layers, thus to carry out molding of disc substrate in which the surface is flattened with high accuracy, and uneven patterns of the metal mold side are transferred without allowing local undulations and/or projections occurring on the disc surface to take place. | ||||||
| 83 | Glide test slider having electrically isolated piezoelectric crystal for improved noise suppression | US967681 | 1997-11-10 | US6016692A | 2000-01-25 | Mark J. Schaenzer; Zuxuan Lin; Zine-Eddine Boutaghou |
| A high resolution, low noise glide height test slider is provided to detect irregularities on a surface of a rotatable disc. A slider body is arranged to be supported by a support structure in predetermined spaced relation to the surface of the disc as it is rotating. A piezoelectric element on the slider body senses vibration forces acting on the slider body. The slider is electrically isolated from external noise sources. | ||||||
| 84 | Process of making substrate for an optical recording medium | US184058 | 1994-01-21 | US5460766A | 1995-10-24 | Hirofumi Kamitakahara; Yukitoshi Ohkubo; Naoki Kushida; Hitoshi Yoshino; Osamu Kanome; Tetsuya Sato; Hisanori Hayashi |
| A roll stamper for forming an information recording medium substrate has a stamper member having a pattern corresponding to a pre-format for an information recording medium formed in its obverse surface, fixation members fixed to both end portions of a reverse surface of the stamper so as to be integral with the stamper member, and fit grooves formed in a circumferential surface of a specular roll base parallel to the axis of the specular roll base. The fixation members are fitted in the fit grooves, and the stamper member is fixed on the circumferential surface of the specular roll base. The roll stamper also includes a mechanism for applying a tensile force to the stamper member. This roll stamper is used in an apparatus having an extruder for melting and extruding a resin to form a resin sheet and a specular roll facing the roll stamper to continuously form the information recording medium substrate. | ||||||
| 85 | Pattern data generator | US172721 | 1993-12-27 | US5455815A | 1995-10-03 | Takehisa Ishida; Toru Takeda |
| A data pattern generator generates pattern data corresponding to a pre-formatted data pattern and supplies the pattern data to a disc-like recording medium producing apparatus for forming the pre-formatted data pattern, such as clock information, servo information and read-out information in a disc-like recording medium. The data pattern generator includes a first memory unit for storing therein as a data array at least part of a data pattern formed on a disc-like recording medium, and a second memory unit for storing therein an order for outputting the data array or a coordinate for outputting the data array. The data array is re-arrayed in accordance with an angle of rotation of the disc-like recording medium and then is output. The pattern data generator also includes a first memory unit for storing therein as a two-dimensional data array at least part of a data pattern formed on a disc-like recording medium, and a second memory unit for storing therein an order for outputting the data array or a coordinate for outputting the data array. The data array is re-arrayed in accordance with an angle of rotation of the disc-like recording medium and a radius of the same and is then output. These data pattern generators may include a delay unit for adding a predetermined delay quantity to the data array in accordance with a radius of the recording medium. | ||||||
| 86 | Roll stamper and apparatus for forming a substrate for information recording medium | US862523 | 1992-04-02 | US5308235A | 1994-05-03 | Hirofumi Kamitakahara; Yukitoshi Ohkubo; Naoki Kushida; Hitoshi Yoshino; Osamu Kanome; Tetsuya Sato; Hisanori Hayashi |
| A roll stamper for forming an information recording medium substrate has a stamper member having a pattern corresponding to a pre-format for an information recording medium formed in its obverse surface, fixation members fixed to both end portions of a reverse surface of the stamper so as to be integral with the stamper member, and fit grooves formed in a circumferential surface of a specular roll base parallel to the axis of the specular roll base. The fixation members are fitted in the fit grooves, and the stamper member is fixed on the circumferential surface of the specular roll base. The roll stamper also includes a mechanism for applying a tensile force to the stamper member. This roll stamper is used in an apparatus having an extruder for melting and extruding a resin to form a resin sheet and a specular roll facing the roll stamper to continuously form the information recording medium substrate. | ||||||
| 87 | Record carrier having servo-track portions and sector addresses having the same predetermined width | US467696 | 1990-02-20 | US5038339A | 1991-08-06 | Johannes H. T. Pasman; Nicolaas C. J. A. Van Hijningen |
| A record-carrier body is described, in which a user can record information by means of optical radiation, which record-carrier body has a relief structure of optically detectable servo-track portions and sector addresses. If the maximum width of the servo-track portions and the areas in the sector addresses is at least of the order of half the track period, the servo track portions can be tracked in an optimum manner and the sector-address areas and the information areas recorded by the user provide a read signal of high amplitude. | ||||||
| 88 | Optically readable record carrier for recording information, apparatus for manufacturing such a record carrier, apparatus for recording information on such a record carrier, and apparatus for reading information recorded on such a record carrier | US501342 | 1990-03-28 | US5023856A | 1991-06-11 | Wilhelmus P. M. Raaymakers; Franciscus L. J. M. Kuijpers |
| An optical disc record carrier having a radiation-sensitive surface and a spiral or concentric pattern of information tracks thereon. The radial displacement of each track is modulated to produce a periodic radial wobble, the frequency of such periodic displacement being modulated by a position-information signal identifying the relative positions of the tracks. During recording or reading of information on the tracks the track modulation is read by a scanning beam. A clock signal for controlling scanning velocity is recovered from the track displacement modulation, and an FM demodulator recovers the position-information signal from the frequency modulation of such displacement. | ||||||
| 89 | Apparatus for injection molding information recording disks | US280920 | 1988-12-07 | US5006058A | 1991-04-09 | Haruhisa Maruyama; Ken-ichi Ishiguro; Hiroaki Watanabe; Osamu Yagisawa |
| An apparatus for injection molding a substrate of an information recording disk in which melted molding material is injected into a mold space after a pair of mold bodies are clamped together. An uneven surface area is provided between a cutting device for cutting the cured molding material at the molding surface and an aperture for supplying the pressurized gas for causing the cured molding material to be released. The flow of pressurized gas through the cut portion of the cured molding material is prevented and force is generated by the pressurized gas causing the cured molding material and a stamper forming the molding surface to release uniformly from the mold. | ||||||
| 90 | Radiation sensitive carrier body utilized as stamper structure | US939292 | 1986-12-04 | US4845000A | 1989-07-04 | Yoshikatsu Takeoka; Nobuaki Yasuda; Akio Hori; Norio Ozawa |
| A radiation-sensitive carrier body directly utilized as a stamper has a glass substrate, a first highly adhesive layer securely adhered to the substrate, a radiation-sensitive layer which discharges a gas component upon being irradiated with a laser beam and which locally forms a protuberance due to the absorbed energy, a second highly adhesive layer securely adhered to the specific material of the radiation-sensitive layer and which deforms in accordance with deformation of the layer, and a metal layer which has a high releasability to allow easy separation from a optical disk substrate material such as an acrylic material when the carrier body is used as a stamper substrate for manufacturing optical disks. A protuberance formed on the carrier body such as a continuous spiral protuberance allows formation of a corresponding spiral groove in the acrylic material, serving as a pre-track into which desired information will be digitally written by a user. | ||||||
| 91 | Method for producing a prerecorded disk-shaped die | US12899 | 1987-02-10 | US4814047A | 1989-03-21 | Horst Redlich; Gunter Joschko |
| A method for producing a prerecorded disk-shaped die is specified in which the information signal is recorded onto a metallic recording medium. According to the invention, the information carrier layer consisting of base metal is first vapor-deposited onto a glass base. Then the information signal is recorded onto the surface of the information layer with the aid of a cutting or stamping tool. Following this, a metallic interlayer of precious metal is galvanized on, onto which another base layer particularly of metal, is then galvanized. After the glass base has been mechanically separated, the information carrier layer can then simply be removed by a chemical medium which does not attack the interlayer. The method according to the invention is particularly suitable for producing dies for digital sound recording according to the compact disk process. | ||||||
| 92 | Method and apparatus for scanning the recording surface of a rotating disc-shaped record carrier | US916248 | 1986-10-07 | US4794584A | 1988-12-27 | Rene Hamer; Johannes H. T. Pasman |
| A method and apparatus for scanning a plurality of concentric or spiral tracks on the surface of a rotating disc-shaped record carrier with a beam of radiation which may be modulated with information to be recorded on such surface. The beam is produced by an optical head and is directed at a target point on the record carrier by a positioning device and a deflection device, the positioning device radially displacing the optical head and the deflection device radially deflecting the radiation beam produced by the optical head. The composite resultant motion of the target point on the carrier is in a radial direction and includes a non-reversing component produced by the positioning device and a reciprocating component produced by the deflection device. Since the reciprocal motion occurs only over the small distance between successive tracks, accurate low-vibration radial motion of the target point is achieved, enabling information to be rapidly and accurately recorded on respective spiral or concentric tracks by means of single-spot radiation beam. | ||||||
| 93 | Process for forming a master mold for optical storage disks | US943845 | 1986-12-24 | US4724043A | 1988-02-09 | Albert S. Bergendahl; Paul E. Cade; Norman T. Gonnella; Francis S. Luecke; Kurt E. Petersen |
| A method for forming a master mold for optical storage disks includes thermally growing an oxide or nitride layer on a semiconductor wafer. The thermally grown layer is then coated with a photoresist. The photoresist is exposed to a laser beam to form a data pattern and developed. The oxide or nitride under the developed pattern is etched and the photoresist stripped to provide a semiconductor master mold for optical disks. | ||||||
| 94 | Recording disc and method for fabricating same | US735355 | 1985-05-17 | US4716560A | 1987-12-29 | Makoto Itonaga |
| A recording disc comprises a substrate having a tracking servo groove of spiral or concentric pattern on one surface thereof. The servo groove has a constant depth and a variable width which varies to allow generation of a position indicating signal. An eraseable recording layer is deposited on the surface of the substrate to store information signals. The recording disc is fabricated by a method involving modulating the intensity of a laser beam with a permanently stored signal and directing it to the surface of a photoresist layer on a master blank placed on a rotating turntable. The beam penetrates the full thickness of the layer. The optically excited portion of the layer spreads in lateral directions by an amount proportional to the energy. The turntable is moved relative to the laser to expose a portion of the photoresist layer in spiral or concentric pattern to the directed beam. The exposed portion is then etched to form the tracking servo groove. A replica of the groove is then form on a substrate followed by the deposition of a radiation sensitive layer on the substrate. | ||||||
| 95 | Process for manufacturing optical disks by pressing | US627096 | 1984-07-02 | US4659407A | 1987-04-21 | Jean-Pierre Lacotte; Sylvain Kretschmer; Pierre Oprandi; Georges Broussaud |
| The invention provides a process for manufacturing optical disks by pressing and disks obtained by such a process, for improving the inherent flatness of the optical disk of the thick type, obtained by a process of pressing between a recorded master and another master, recorded or not depending on whether it is a question of a single or double side disk, this latter being formed from a stack of at least two thin sheets of thermoformable material subjected to a pressure-temperature cycle after which bonding together of the sheets and duplication of the information from the masters for information recording are obtained. | ||||||
| 96 | Fabricating optical record media | US723410 | 1985-04-15 | US4619804A | 1986-10-28 | Eric M. Leonard; Robert V. Fister; James R. Pledger |
| A process for making at least a single-faced, write and/or read optical disk having a sub-layer with a smooth or high-resolution featured surface and the opaque, substantially flat substrate includes the steps of interjecting between the opaque, substantially flat substrate and a transparent, highly polished or featured master mold, a thin layer of viscous composition which is radiation-curable to a solid plastic without undergoing significant shrinkage. The layer of viscous composition is irradiated through the transparent mold to cure the composition to a solid plastic sub-layer having the desired smooth or high-resolution featured surface. After irradiation of the composition, the master mold is removed, leaving the cured plastic sub-layer adhered to the substrate. The substrate is preferably metal, such as aluminum, and the master is preferably glass with an etched featured surface thereon. | ||||||
| 97 | Method for determining variations from flatness in the topography of a disc surface | US518733 | 1983-07-29 | US4602359A | 1986-07-22 | Richard C. Palmer |
| A method is provided for determining the magnitude of flatness deviation in high density information discs, such as video discs, manifesting irregularities in playback. Such flatness deviations are known as "orange-peel." A stylus riding over a relatively large area (4-5 grooves) of the disc surface provides a vertical velocity signal within a given spatial or temporal frequency band. The signal in velocity or displacement form is the quantitative measure of deviation. The method is useful for other type discs where quantitative measurements in flatness deviation are desired. | ||||||
| 98 | Process of using radiation-sensitive carrier body to form stamper structure and subsequent use as a stamper to make optical disks | US630232 | 1984-07-12 | US4565772A | 1986-01-21 | Yoshikatsu Takeoka; Nobuaki Yasuda; Akio Hori; Norio Ozawa |
| A radiation-sensitive carrier body directly utilized as a stamper has a glass substrate, a first highly adhesive layer securely adhered to the substrate, a radiation-sensitive layer which discharges a gas component upon being irradiated with a laser beam and which locally forms a protuberance due to the absorbed energy, a second highly adhesive layer securely adhered to the specific material of the radiation-sensitive layer and which deforms in accordance with deformation of the layer, and a metal layer which has a high releasability to allow easy separation from a optical disk substrate material such as an acrylic material when the carrier body is used as a stamper substrate for manufacturing optical disks. A protuberance formed on the carrier body such as a continuous spiral protuberance allows formation of a corresponding spiral groove in the acrylic material, serving as a pre-track into which desired information will be digitally written by a user. | ||||||
| 99 | Method of providing a metal layer on a substrate | US558402 | 1983-12-05 | US4521444A | 1985-06-04 | Johannes J. Ponjee; Johan W. A. Nelissen; Christiaan J. A. Verwijlen |
| A method of providing a metal layer on a substrate having an ultra-smooth or microprofiled surface, in which the surface structure is reproduced in the metal layer. On the substrate surface which is hydrophilic or is made hydrophilic, preferably a monomolecular layer of alkoxysilylalkylthiol, an alkoxysilylalkylamine or a chlorosilylalkylthiol is provided as a bonding intermediary in a layer which is at most 15 molecules thick by contact with an atmosphere in which said substance is present in a vapor form. The metal layer is vapor-deposited thereon in a thickness of 50-300 nm. | ||||||
| 100 | Metallized information carrying discs | US406121 | 1982-08-09 | US4519065A | 1985-05-21 | Terry W. Lewis; Roger J. Anderson; Donald J. Kerfeld |
| Coded information bearing elements such as video discs may be produced from multilayered articles. The articles comprise a base having a thermoplastic, radiation curable resin on one surface and an embossable electrically conductive or radiation reflective layer over said resin. | ||||||
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