Metal substrate for a magnetic disc and manufacture thereof

Details Metal substrate for a magnetic disc and manufacture thereof Metal substrate for a magnetic disc and manufacture thereof

1994-03-01

1997-01-14

Dang, Thi

Etching a substrate: processes

Masking of a substrate using material resistant to an etchant

Resist material applied in particulate form or spray

216 22, 216 49, 216 50, 216100, C23F 100

Patent

active

055936024

ABSTRACT:
The present invention provides a process for producing a metal substrate for a thin film magnetic data storage disc, the process including the steps of: (a) providing a metal substrate; (b) printing a masking pattern onto at least a portion of the surface of the substrate; and (c) etching the unmasked surface of the substrate thereby to texture the substrate surface. The present invention also provides a metal substrate for a thin film magnetic data storage disc, the substrate having a roughened surface produced by preferential area etching, the roughened surface being composed of a regular pattern of peaks separated by valleys.

REFERENCES:
patent: 4264410 (1981-04-01), Frantzen
patent: 4407695 (1983-10-01), Deckman et al.
patent: 4642163 (1987-02-01), Greschner et al.
patent: 4664748 (1987-05-01), Ueno et al.
patent: 4879457 (1989-11-01), Ludden
patent: 5059279 (1991-10-01), Wilson
patent: 5127330 (1992-07-01), Okazaki et al.
patent: 5166006 (1992-11-01), Lal et al.
patent: 5220725 (1993-06-01), Chan et al.
patent: 5242544 (1993-09-01), Itoh et al.
patent: 5275693 (1994-01-01), Nakama
patent: 5312514 (1994-05-01), Kumar
patent: 5388020 (1995-02-01), Nakamura et al.

Affiliated with

Also associated with

Rating

Metal substrate for a magnetic disc and manufacture thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal substrate for a magnetic disc and manufacture thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal substrate for a magnetic disc and manufacture thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1385682