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| Number | Title | Issue Date |
| 7252897 | Magnetic recording disk and process for manufacture thereof A magnetic recording disk having a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a perfluoropolyether compound having an end m... | 08/07/2007 |
| 7060377 | Lubricant film containing additives for advanced tribological performance of magnetic storage medium A magnetic recording medium having a lubricant film containing a non-phase separated additive and a lubricant a base layer, wherein the additive is bonded to the base layer, for better and faster mobility of a lubricant to ensure rapid healing of areas of the medium... | 06/13/2006 |
| 6971428 | Device for vacuum-pressing of DVD substrates The invention relates to a device for vacuum-pressing of disk-shaped substrates, in particular DVD substrates into a finished DVD, wherein the device has a vacuum chamber with two substrate holders and an intermediate element that can be displaced inside the vacuum ... | 12/06/2005 |
| 6953514 | Method and device for assembling substrates A method and apparatus for joining at least two substrates together, especially to form an optical data carrier, are provided. Substrates are disposed in a spaced-apart manner between two plates that are disposed opposite from, and are movable relative to, one anoth... | 10/11/2005 |
| 6846542 | UV treatment for improving performance of lubricated thin film recording media and media obtained thereby A method of increasing the performance of a composite lubricant material when utilized as a thin film lubricant, comprising: (a) providing a substrate including a surface; (b) providing a composite lubricant compri... | 01/25/2005 |
| 6749917 | Magnetic recording medium The present invention provides a magnetic recording medium of high density with high durability and good electromagnetic transfer characteristics. The present invention provides a magnetic recording medium, which comprises a primer layer containing at least nonmagne... | 06/15/2004 |
| 6740607 | Substrate with stretch and heat sealing properties to make a multidirectional restraint module design The invention is directed to coating a plurality of polyurethane films onto a stretchable knit fabric substrate and heat sealing such substrates together to yield an air curtain or air bag having improved air-holding properties. ... | 05/25/2004 |
| 6686019 | In-situ stabilization of composite lubricant/additive films on thin film media A method of in situ stabilizing a composite lubricant in order to reduce or subtantially eliminate phase separation of the components of the composite lubricant, comprising sequential steps of: (a) providing a substrate including a surface; (b) applying a thin... | 02/03/2004 |
| 6572934 | Method for manufacturing a magnetic recording disk In manufacturing a magnetic recording disk, a magnetic film for a recording layer is deposited on a substrate of the magnetic recording disk in a magnetic-film deposition chamber, and the substrate is transferred from the magnetic-film deposition chamber ... | 06/03/2003 |
| 6555197 | Lubricant, magnetic disk and magnetic disk apparatus A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reprodu... | 04/29/2003 |
| 6455101 | Method for depositing a protective carbon coating on a data recording disk A method and apparatus for depositing a protective film on a data recording disk, including the steps of depositing a magnetic film layer as a data recording layer on a surface of a substrate while the substrate is at a magnetic film deposition temperatur... | 09/24/2002 |
| 6355300 | Disc lubrication for the load/unload head disc interface A method for lubricating a thin film magnetic media is disclosed wherein the magnetic media is lubricated only at the head-disc interface zone. The method comprises the steps of vaporizing the lubricant, mixing the lubricant with a carrier gas stream, and... | 03/12/2002 |
| 6346309 | Optical recording medium and process for producing same The present invention provides an optical recording medium which is inhibited or prevented from sticking of lubricants onto a light emitting face of a solid immersion lens. The optical recording medium 10 of the present invention comprises a substrate 1 a... | 02/12/2002 |
| 6319583 | Lubricated and overcoated magneto-optical media with improved tribological performance Magneto-optical information storage media having improved tribological properties when used in high-density storage devices employing very small head flying heights are formed by providing by a protective overcoat/lubricant topcoat layer system on the med... | 11/20/2001 |
| 6274227 | Magnetic recording medium having a magnetic layer and a coating thereunder A magnetic recording medium comprising a nonmagnetic substrate, a liquid lubricant-containing coating layer having a porosity (U) formed on the substrate, and a magnetic layer having a porosity (M) formed directly on the coating layer. The ratio of porosi... | 08/14/2001 |
| 6198208 | Thin film piezoelectric device A thin film piezoelectric device has an epitaxial metal thin film (4) on a silicon substrate (2) and a PZT thin film (5) on the metal thin film, the PZT thin film (5) having a Ti/(Ti+Zr) atomic ratio between 0.65 and 0.90. A film bulk acoustic resonator h... | 03/06/2001 |
| 6194048 | Magnetic recording disk A magnetic recording disk having on its surface a texture structure of fine surface irregularities with reduced variations, which is suitable for high-density magnetic recording, and a method of manufacturing such a magnetic recording disk are provided. T... | 02/27/2001 |
| 6190749 | Hydroxyethyloxymethyl terminated perfluoropolyethers for lubrication of discs in information storage systems An information storage system including a perfluoropolyether lubricant having hydroxyethyloxymethyl terminated endgroups on the surface of a rigid storage medium is provided. In the subject invention, the perfluoropolyether lubricant has the general repea... | 02/20/2001 |
| 6110524 | Method of forming lubricant layer on magnetic disc, device for forming lubricant layer thereon, and magnetic disc In the method of the present invention, lubricant layers of magnetic discs, which have fixed thickness, can be formed by volatilizing solvent. The method of forming the lubricant layer on the magnetic disc, comprises the steps of: dipping the magnetic dis... | 08/29/2000 |
| 6096385 | Method for making magnetic disks with uneven distribution of bonded/unbonded lubricating molecules A magnetic disk having improved tribological characteristics in the data zone of the disk surface while retaining a low sliding stiction in the landing zone is disclosed. It contains the conventional elements of a substrate, a magnetic recording layer, a ... | 08/01/2000 |
| 5998340 | Lubricant and magnetic recording medium using the same A lubricant containing a branched aliphatic diester of the general formula: R1 R2 R3 C--(CH2)n --X--R--X'--(CH2)n --CR4 R5 R6 in which R1 t... | 12/07/1999 |
| 5985403 | Magnetic recording medium and magnetic recording reproducer A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer and a protective layer which are formed on the non-magnetic substrate in that order, wherein a substance(s) as a single component or a plurality of components, which cons... | 11/16/1999 |
| 5945197 | Laser texturing of magnetic recording medium using multiple lens focusing A magnetic recording medium is textured with a pulsed laser light beam through a multiple lens focusing system. The use of a multiple lens focusing system enables the formation of a plurality of relatively uniform protrusions smaller than those obtained w... | 08/31/1999 |
| 5631041 | Manufacturing method for magnetic disc A magnetic disc manufacturing apparatus is includes a polishing device for conducting a surface polishing treatment on a disc, a supply device for supplying lubricant onto the polished disc, and a feeding mechanism for feeding the disc between the devices... | 05/20/1997 |
| 5604005 | Magneto-optical disc A magneto-optical disc comprising a recording layer and a protective coating on a substrate is operated for magneto-optical recording in a magnetic field modulation mode such that the protective coating is in sliding contact with a magnetic head. The prot... | 02/18/1997 |
| 5037710 | Anti-spin-off coating for disc records Magnetic recording media wherein the record surface is coated with an isocyanate lubricant (and, preferably, a supercoat of like lubricant), such lubrication being adapted to inhibit spin-off and like depletion, despite frequent head-contact, while exhibi... | 08/06/1991 |
| 4906499 | High density information record medium comprising a polymer material having a lubricant uniformly dispersed therein An information signal record medium of an electrostatic capacitance type in which a signal information is recorded as geometric variations is described. The medium is made of a conductive resin composition which comprises a vinyl chloride resin and 5 to 3... | 03/06/1990 |
| 4560601 | High-density information disc lubricants High-density information records are lubricated with a methyl alkyl siloxane lubricant containing an effective amount of a donor-acceptor complex to reduce moisture sensitivity.... | 12/24/1985 |
| 4540615 | High-density information disc lubricant Tetraphenyl siloxanes having the formula ##STR1## wherein R1 and R4 can be hydrogen or lower alkyl, R2 and R3 can be hydrogen, phenyl or lower alkyl and n is 0 or 1, when added to methyl alkyl siloxane lubr... | 09/10/1985 |
| 4525402 | High-density information disc lubricants A titanium coupling agent of the formula ##STR1## wherein R3 is methyl, ethyl or isopropyl and R4 and R5 are long chain alkyl groups of 8-20 carbon atoms, when added to a fractionated methyl alkyl siloxane lubricant f... | 06/25/1985 |
| 4515843 | Disc-shaped information carrier having a high storage density A disc-shaped information carrier produced by thermoplastic deformation comprising a pressed mass including a co-polymer of vinyl chloride having additives incorporated therein. The carrier has hygroscopic properties and relief-like surface portions which... | 05/07/1985 |
| 4486325 | High-density information disc lubricants Chlorophenyl trialkoxysilane, when added to a fractionated methyl alkyl siloxane lubricant for capacitive electronic discs, improves the playback performance and surface quality of the discs.... | 12/04/1984 |
| 4455335 | High density information disc lubricants Capacitance electronic discs comprising conductive carbon-loaded PVC records are lubricated with a long chain polyalkylethylene lubricant containing 9-phenylstearyl alcohol as a dopant in an amount sufficient to reduce the moisture sensitivity of the disc... | 06/19/1984 |
| 4444820 | High density information disc lubricants 9-Phenylstearyl alcohol, when added to a fractionated methyl alkyl siloxane lubricant for capacitive electronic discs, improves the playback performance and surface quality of the disc.... | 04/24/1984 |
| 4416789 | High density information disc lubricants High density information discs comprising a conductive carbon-loaded polyvinylchloride disc is lubricated with a fractionated methyl alkyl siloxane lubricant which contains a long chain alkyl substituted betaine.... | 11/22/1983 |
| 4414660 | High density information disc High density information discs comprising conductive carbon loaded polyvinylchloride discs are lubricated with a fractionated methyl alkyl siloxane lubricant which contains an alkylene oxide silicone copolymer additive.... | 11/08/1983 |
| 4410748 | High density information disc lubricants High density information records comprising a conductive carbon-loaded polyvinylchloride record are lubricated with a long chain polyalkylethylene containing a polar dopant substituted with a long chain alkyl group in amounts sufficient to reduce sensitiv... | 10/18/1983 |
| 4390579 | Doped polyphenylene ether lubricant for high density information discs High density information discs comprising a conductive carbon-loaded polyvinylchloride disc are lubricated with a polyphenylene ether containing a polar dopant substituted with a long chain alkyl group in amounts sufficient to reduce surface tension of th... | 06/28/1983 |
| 4389441 | High density information record lubricants High density information records comprising a conductive carbon-loaded polyvinylchloride record are lubricated with a fractionated methyl alkyl siloxane lubricant which contains at least two dopants in an amount sufficient to reduce sensitivity of the rec... | 06/21/1983 |
| 4355062 | Bis(hydroxyalkyl)disiloxanes and lubricant compositions thereof Bis(hydroxyalkyl)disiloxane lubricants of the formula ##STR1## wherein R1 and R3 are methyl or ethyl and R2 and R4 are linear alkyl groups of up to 20 carbon atoms. These compounds are useful as additives t... | 10/19/1982 |
