Magnetic medium comprising a substrate having pits and grooves o

Details Magnetic medium comprising a substrate having pits and grooves o Magnetic medium comprising a substrate having pits and grooves o

1992-02-26

1994-09-27

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

360131, 360135, 369109, 369277, 428167, 428168, 428694BR, 428694TR, 428900, B32B 300

Patent

active

053506189

ABSTRACT:
A magnetic medium comprising a substrate formed with a stepped pit and a magnetic substance buried in the stepped pit. A method of manufacturing a magnetic medium comprising the steps of forming a first groove in a substrate by photoetching, forming a second groove in the first groove or in a portion adjacent to the first groove by the photoetching, the second groove being different in depth from the first groove, and burying magnetic substances into the first and second grooves.

REFERENCES:
patent: 2501126 (1946-10-01), Howell
patent: 3099571 (1963-07-01), Maierson et al.
patent: 3554798 (1971-01-01), Nacci
patent: 4351010 (1982-09-01), Arai
patent: 4480302 (1984-10-01), Kalk et al.
patent: 4517616 (1985-05-01), Bischoff
patent: 4556967 (1985-12-01), Braat
patent: 4562105 (1985-12-01), Machida et al.
patent: 4716560 (1987-12-01), Itonaga
patent: 4844963 (1989-07-01), Takasuna et al.
patent: 4875987 (1989-10-01), Wada et al.
patent: 4911967 (1990-03-01), Lazzari
patent: 4935278 (1990-06-01), Krounbi et al.
patent: 5060223 (1991-10-01), Segawa
patent: 5114552 (1992-09-01), Abe
Patent Abstracts of Japan vol. 10, No. 279 (E-439)(2335) 20 Sep. 1986 & JP-61 100 910 (H. Yamada) 19 May 1986 -Abstract.
Patent Abstracts of Japan, vol. 10, No. 217 (E-423)(2273) 29 Jul. 1986 & JP-61 54 857 (Nippon Radiator Co.) 19 Mar. 1986 -Abstract.
Extended Abstracts, vol. 82, No. 2, Oct. 1982, Princeton, N.J., pp. 291-292, W. Van Den Hoek et al.

Affiliated with

Also associated with

Rating

Magnetic medium comprising a substrate having pits and grooves o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic medium comprising a substrate having pits and grooves o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic medium comprising a substrate having pits and grooves o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1264599