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1. (WO2006019177) MAGNETIC RECORDING MEDIA AND PRODUCTION METHOD THEREFOR
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2006/019177 International Application No.: PCT/JP2005/015305
Publication Date: 23.02.2006 International Filing Date: 17.08.2005
IPC:
G11B 5/84 (2006.01) ,G11B 5/73 (2006.01) ,G11B 5/82 (2006.01) ,C23C 14/02 (2006.01) ,C23C 16/02 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
84
Processes or apparatus specially adapted for manufacturing record carriers
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
62
Record carriers characterised by the selection of the material
73
Base layers
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
74
Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
82
Disc carriers
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14
Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
02
Pretreatment of the material to be coated
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
16
Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes
02
Pretreatment of the material to be coated
Applicants: OSAWA, Hiroshi[JP/JP]; JP (UsOnly)
KUROKAWA, Gohei[JP/JP]; JP (UsOnly)
SHOWA DENKO K.K.[JP/JP]; 13-9, Shibadaimon 1-chome, Minato-ku Tokyo 105-8518, JP (AllExceptUS)
Inventors: OSAWA, Hiroshi; JP
KUROKAWA, Gohei; JP
Agent: SHIGA, Masatake ; 2-3-1, Yaesu, Chuo-ku Tokyo 104 8453, JP
Priority Data:
2004-23957119.08.2004JP
60/605,49931.08.2004US
Title (EN) MAGNETIC RECORDING MEDIA AND PRODUCTION METHOD THEREFOR
(FR) SUPPORT D'ENREGISTREMENT MAGNÉTIQUE ET PROCÉDÉ DE PRODUCTION CORRESPONDANT
Abstract:
(EN) The present invention is a production method for a magnetic recording media in which at least a magnetic layer, a protective layer, and a lubricnat layer are sequentially layered onto a non-magnetic substrate 1, and non-magnetic substrate 1 is surface treated using a gas activated by plasma generated at around atmospheric pressure. As a result of the present invention, it is possible to produce magnetic recording media with good yield that have few errors and superior head floating properties, by effectively removing foreign material and projections present on the surface of the magnetic recording media.
(FR) La présente invention est un procédé de production d’un moyen d'enregistrement magnétique ; au moins une couche magnétique, une couche protectrice et une couche lubrifiante sont séquentiellement disposées en couche sur un substrat non magnétique 1 ; le substrat non magnétique 1 est traité en surface à l'aide d'un gaz activé par plasma généré près de la pression atmosphérique. En conséquence de la présente invention, il est possible de produire un moyen d'enregistrement magnétique avec un bon rendement et peu d'erreurs et des propriétés supérieures de flottement de tête, en enlevant efficacement le matériau étranger et les projections présentes sur la surface des supports d'enregistrement magnétique.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)