Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1993-01-29
1995-10-03
Kiliman, L.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428328, 428329, 428331, 428332, 428336, 428693, 428694B, 428694BS, 428694BN, 428694BM, 428702, 428900, 428928, 427127, 427128, 427130, 427131, B32B 516, G11B 566
Patent
active
054551129
ABSTRACT:
A magnetic recording medium produced by providing a lower non-magnetic layer comprising a non-magnetic powder dispersed in a binder on a non-magnetic support followed by providing, while the lower non-magnetic layer is still wet, an upper magnetic layer comprising a ferromagnetic powder dispersed in a binder on the lower non-magnetic layer, wherein a mean thickness of the upper magnetic layer is 1.0 .mu.m or less and the non-magnetic powder in the lower non-magnetic layer comprises (A) a granular inorganic powder having a mean particle size of from 0.01 to 0.08 .mu.m, (B) a carbon black powder having a mean particle size of from 0.01 to 0.04 .mu.m and (C) a powder component having a larger mean particle size than the mean particle size of each of powders (A) and (B). The magnetic recording medium has good electromagnetic characteristics and has excellent running durability with little edge damage after repeated running.
REFERENCES:
patent: 4587157 (1986-05-01), Brock et al.
patent: 4746558 (1988-05-01), Shimozawa et al.
patent: 4863793 (1989-09-01), Ogawa et al.
patent: 4874633 (1989-10-01), Komatsu et al.
patent: 4963433 (1990-10-01), Ogawa et al.
patent: 5336559 (1994-08-01), Yamagishi
patent: 5358777 (1994-10-01), Kojima
patent: 5389418 (1995-02-01), Ota
Ejiri Kiyomi
Inaba Hiroo
Fuji Photo Film Co. , Ltd.
Kiliman L.
LandOfFree
Magnetic recording medium 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 recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1076536