Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Patent
1998-03-09
2000-07-11
Pianalto, Bernard
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
2041922, 20419235, 427128, 427130, 427131, 427599, H01F 100
Patent
active
060869615
ABSTRACT:
Servo-pattern information is magnetically recorded on a product disc by magnetic print-through from a master medium. The master servo-writing medium is brought into close proximity with the product "slave" disc, and the two are subjected to an external magnetic field which assists in transferring magnetic servo-patterns to the slave disc in a print-through process. The preferred external magnetic field alternates and rotates with respect to the master/slave combination. In an alternative product disc structure, the magnetic layer is magnetically altered in a servo-pattern configuration. Non-magnetic portions of the servo pattern are created which define both gray code and servo burst information for the product disc.
REFERENCES:
patent: 3258750 (1966-06-01), Shew
patent: 3593331 (1971-07-01), Connell et al.
patent: 3753252 (1973-08-01), Tietze
patent: 4783705 (1988-11-01), Moon et al.
patent: 4802050 (1989-01-01), Miyabayaski et al.
patent: 5193034 (1993-03-01), Tsuyoshi et al.
patent: 5210672 (1993-05-01), Ivers et al.
patent: 5278703 (1994-01-01), Rub et al.
patent: 5350618 (1994-09-01), Togawa et al.
Pianalto Bernard
Seagate Technology Inc.
LandOfFree
Quickly written servo-patterns for magnetic media including remo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quickly written servo-patterns for magnetic media including remo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quickly written servo-patterns for magnetic media including remo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-539739