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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...
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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...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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5998340 |
Lubricant and magnetic recording medium using the same
A lubricant containing a branched aliphatic diester of the general formula: R 1 R 2 R 3 C--(CH 2 ) n --X--R--X'--(CH 2 ) n --CR 4 R 5 R 6 in which R 1 to R 6 independently represent a...
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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...
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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...
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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...
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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...
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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...
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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.
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4540615 |
High-density information disc lubricant
Tetraphenyl siloxanes having the formula ##STR1## wherein R 1 and R 4 can be hydrogen or lower alkyl, R 2 and R 3 can be hydrogen, phenyl or lower alkyl and n is 0 or 1, when added to methyl...
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4525402 |
High-density information disc lubricants
A titanium coupling agent of the formula ##STR1## wherein R 3 is methyl, ethyl or isopropyl and R 4 and R 5 are long chain alkyl groups of 8-20 carbon atoms, when added to a fractionated methyl...
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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...
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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.
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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...
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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...
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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...
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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...
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4355062 |
Bis(hydroxyalkyl)disiloxanes and lubricant compositions thereof
Bis(hydroxyalkyl)disiloxane lubricants of the formula ##STR1## wherein R 1 and R 3 are methyl or ethyl and R 2 and R 4 are linear alkyl groups of up to 20 carbon atoms. These compounds are...
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4351048 |
High density information disc lubricants
High density information discs are lubricated with a silyl quaternary ammonium salt of the formula ##STR1## wherein R is a lower alkyl group of 1-5 carbon atoms; R 3 is methyl or ethyl; R 4 is an...
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4327140 |
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 an amino alkoxy silane.
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4232072 |
Protective compositions for recording
An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a composition comprising essentially about 0.001 to...
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4151132 |
Molding composition
An improved molding composition for compression molding non-coated video discs containing about 12-20 percent of conductive carbon black particles, about 10 percent of a vinyl chloride-vinyl...
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4137550 |
Video disc with a dielectric layer formed from acetylene and nitrogen
This invention relates to a video disc with a thin polymeric dielectric layer formed from acetylene and nitrogen in a glow discharge. The dielectric layer has improved age deterioration resistance...
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4077052 |
Video disc capacitive recording means with a conductive bilayer
This invention relates to a capacitive recording means comprising a video disc with a thin conductive bilayer on the surface of the disc wherein the bilayer is a first layer of copper and a second...
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4077051 |
Video disc with a conductive layer having an oxygen content gradient
This invention pertains to a video disc having a conductive bilayer thereon of a copper layer and a nickel/chromium/iron alloy layer wherein the alloy layer contains oxygen which decreases in...
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3551264 |
FLUOROCARBON SOUND RECORD
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3578539 |
Title is not available
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