Victor Company of Japan, Limited

Yuji Kikuchi

Hideshi Tanaka

Tsutomu Yashiro

Kiyoshi Senzaki

Naoyuki Kubo

In a melt-type thermal transfer printing apparatus, an ink ribbon is brought into contact with a recording medium. A thermal head presses the ink ribbon. By controlling an electric power supplied to the thermal head, a melt or fusion area of ink is controlled so as to obtain a multi-gradational image on the recording medium. The recording medium is a porous surfaced medium having a multilayered porous layer containing numerous pores having a porous diameter in a range up to about 25 .mu.m.

Melt-type thermal transfer printing apparatus and a printing sheet with

A thermal transfer sheet is provided which comprises a support and an ink layer formed on one side of the support. The ink layer is made of a composition of a sublimable dye and a resin binder comprised of not less than 15 parts by weight of an epoxy resin and not less than 30 parts by weight of a butyral resin. The resin binder is effective in suppressing soiling on a sheet to be transferred as will be caused by the dye additionally deposited on the background of the thermal transfer sheet during the thermal printing procedure.

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Mito, Japan

Yuji Kikuchi