Dye transfer type thermal printing sheets

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8471, 428195, 428212, 428327, 428421, 428447, 428500, 428913, 428914, B41M 5035, B41M 526

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active

051186578

ABSTRACT:
A dye transfer sheet consisting of a transfer substrate and a coloring material layer comprising a high concentration layer which comprises a dye and is formed on the transfer substrate and a low concentration layer which comprises a water soluble resin or water dispersible resin having a polydimethylsiloxane structure and has a lower dye concentration than the high concentration layer and is formed on the high concentration layer. A dye transfer sheet consisting of a transfer substrate and a coloring material layer comprising a high concentration layer which comprises a dye and a binder polymer cross-linked with a cross-linking agent and is formed on the transfer substrate and a low concentration layer which comprises a water soluble resin or water dispersible resin and has a lower dye concentration than the high concentration layer and is formed on the high concentration layer. The dye transfer sheet of the present invention can be used in a multiple-use mode printing system including a relative speed printing.

REFERENCES:
patent: 4623580 (1986-11-01), Koshizuka et al.
patent: 4724288 (1988-02-01), Hann
patent: 4880768 (1989-11-01), Mochizuki et al.
patent: 4902669 (1990-02-01), Matsuda et al.
Patent Abstracts of Japan, vol. 11, No. 82 (M-571)(2529) 12 Mar. 1987, & JP-A-61 237688 (Ricoh Co. Ltd.) 22 Oct. 1986.
Patent Abstracts of Japan, vol. 11, No. 48 (M-561)(2495) 13 Feb. 1987, & JP-A-61 211094 (Hitachi Ltd.) 19 Sep. 1986.
Patent Abstracts of Japan, vol. 10, No. 291 (M-522)(2347) 3 Oct. 1986, & JP-A-61 106296 (Dainippon Printing Co. Ltd.) 24 May 1986.
H. Sato et al., Journal of the Institute of Image Electronics Engineers, 16(5), 280-286 (1987).
Y. Murata, "Material for Information Recording System", Academic Publication Center (1989), pp. 127-146.
H. Matsuda et al., "Partially Reusable Printing Characteristics of Dye Transfer Type Thermal Printing Sheets" in Collected Papers of Proceedings of 2nd Non-impact Printing Technologies Symposium, pp. 101-104 (1985).
T. Shimizu et al., "Multi-Usable Sublimation Dye Sheets" National Convention Record of the Institute of Image Electronics Engineers (Jun. 1986) pp. 1-4.
H. Matsuda et al., "Multi-Usable Dye Transfer Sheets" Advanced Printing of Paper Summaries of the 30th Anniversary Conference of the Society of Electrophotography of Japan, pp. 266-269.

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