Roll or roller – Concentric layered annulus – Specific composition
Patent
1995-12-12
1998-11-17
Schwartz, Larry I.
Roll or roller
Concentric layered annulus
Specific composition
492 28, 29724, B21B 3108
Patent
active
058368604
ABSTRACT:
In a resin roll 5 for calendering a magnetic recording medium, a surface portion 3a of a thermosetting resin outer layer 3 has high storage elastic modulus (E') of 5.times.10.sup.10 to 5.times.10.sup.11 dyn/cm.sup.2 at a temperature of 50.degree. to 150.degree. C. at a frequency of 10 hertz (Hz). At the surface portion of the thermosetting resin outer layer, the expression representing the relation between storage elastic modulus (E') and the Poisson's ratio (.nu.) is within the following range, under the same conditions:
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Japanese Industrial Standard JIS B 0601 (1994) Surface roughness Definitions and designation, pp. 1-27.
Abe Tatsuyuki
Nakayama Kenjiro
Watanabe Atsuo
Butler Marc W.
Schwartz Larry I.
Yamauchi Corporation
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