Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1994-07-14
1995-08-08
Foelak, Morton
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428480, 428694SL, 428694BB, B32B 712
Patent
active
054397383
ABSTRACT:
There is provided a biaxially oriented polyester base film for a magnetic tape for use in a cassette for a digital audio tape recorder. The film has (a) a stress when the biaxially oriented polyester base film is extended in the longitudinal direction by 5% of at least 12 kg/mm.sup.2, (b) a residual extension in the longitudinal direction of 0.2% or less and a residual extension in the transverse direction of 0.3% or less, (c) a heat shrinkage in the longitudinal direction of 1.5% or less, (d) at least one surface of which has a surface roughness, Ra, of 25 nm or less, and (e) a film thickness of in the range of from 3 to 12 .mu.m. A magnetic tape for use in a cassette for a digital audio tape recorder is also provided.
REFERENCES:
patent: 5051292 (1991-09-01), Katoh et al.
patent: 5252388 (1993-10-01), Murooka et al.
Chemical Abstracts, vol. 109, No. 10, Sep. 5, 1988, Columbus, Ohio.
Chemical Abstracts, vol. 110, No. 6, 1989 Columbus, Ohio.
Chemical Abstracts, vol. 110, No. 22, May 29, 1989, Columbus, Ohio.
Chemical Abstracts, vol. 111, No. 8, Aug. 21, 1989, Columbus, Ohio.
Chemical Abstracts, vol. 111, No. 16, Oct. 16, 1989, Columbus, Ohio.
Chemical Abstracts, vol. 112, No. 6, Feb. 5, 1990, Columbus, Ohio.
Patent Abstracts of Japan, vol. 14, No. 116, Mar. 5, 1990.
Chujo Takao
Endou Kouhei
Hamano Hisashi
Nishiyama Masanori
Ogawa Tatsuya
Foelak Morton
Teijin Limited
LandOfFree
Magnetic tape for use in cassette for digital audio tape recorde 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 for use in cassette for digital audio tape recorde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic tape for use in cassette for digital audio tape recorde will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-970024