Magnetic tape

Details Magnetic tape Magnetic tape

1992-02-12

1994-05-31

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428480, 428694ST, 428694SL, 428694SG, 428900, G11B 566, B32B 2706

Patent

active

053168232

ABSTRACT:
A magnetic tape for audio cassettes wherein a magnetic layer is provided on base film characterized in that the a base film, is biaxially oriented polyethylene-2,6-naphthalate film having a Young's modulus in the longitudinal direction of 850 Kg/mm.sup.2 or more, a Young's modulus in the transverse direction of 550 Kg/mm.sup.2 or more a surface roughness Ra in the range of 0.015 to 0.040 .mu.m, and a thermal shrinkage rate in the longitudinal direction of 0.3% or less in a case where it was held at a temperature of 100.degree. C. for 1 hour.
A magnetic tape for audio cassettes is provided which is capable of long-time recording and wherein deterioration of magnetic characteristics does not easily occur in use, storage and the like at a high temperature, for example in the open during summer or in cars, compared to conventional ones.

REFERENCES:
patent: 4614687 (1986-09-01), Nishimatsu et al.
patent: 4710421 (1987-12-01), Ono et al.
patent: 4720412 (1988-01-01), Katoh et al.
patent: 4780353 (1988-11-01), Takahashi et al.
patent: 4804736 (1988-02-01), Utsumi et al.
patent: 5051292 (1991-09-01), Katoh et al.
Teijin, Patent Abstracts of Japan, vol. 11, No. 293 (P-619) (2740), 1987.

Affiliated with

Also associated with

Rating

Magnetic tape 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 tape, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic tape will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1626826