Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1992-06-05
1994-07-12
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428212, 4284881, 4284884, 428522, 428913, 428914, B32B 900
Patent
active
053287460
ABSTRACT:
A thermal transfer recording medium includes a sheet-like base member and a hot-melt ink layer containing a colorant and a hot-melt material. The hot-melt ink layer contains a hot-melt material having a melting point Tm of 70.degree. to 90.degree. C., a complex elastic modulus of 10.sup.6 Pa to 10.sup.7 Pa at 100.degree. C., and a pour point Tp of 150.degree. C. or more, the hot-melt ink layer is in an amorphous or microcrystalline state and satisfies condition I/I.sub.0 .ltoreq.0.9 where I is the diffraction peak intensity in a range of 21.3.degree. to 21.5.degree. originated from an ethylene-based crystal and measured by an x-ray diffraction method, and I0 is the halo intensity in a range of 16.degree. to 17.degree. originated from an amorphous part, or the hot-melt ink layer contains a low-melting point crystalline material having a specific acid value and a specific saponification value and 15 to 30 wt % of a specific copolymer resin whose ethylene content is 65 to 80 wt % and a melt index of 60 or less.
REFERENCES:
patent: 3368989 (1968-02-01), Wissinger et al.
patent: 4681796 (1987-07-01), Maehashi et al.
patent: 4948446 (1990-08-01), Yamahata et al.
patent: 5043228 (1991-08-01), Yamahata et al.
patent: 5147707 (1992-09-01), Hasegawa et al.
Patent Abstracts of Japan, vol. 9, No. 275, (M-426), Nov. 2, 1985, & JP-A-60 120 093, Jun. 27, 1985, Kitamura Shigehiro, et al., "Thermal Transfer Recording Medium".
Nakamura Nanao
Nakamura Tadayuki
Okuyama Tetsuo
Sato Noriaki
Takayama Satoshi
Kabushiki Kaisha Toshiba
Krynski William A.
Ryan Patrick J.
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