公开(公告)号：US10882349B2

公开(公告)日：2021-01-05

申请号：US16510595

申请日：2019-07-12

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Takehito Yamato ,  Takeshi Arita

IPC: B32B27/30 ,  B41M5/395 ,  B41M5/382 ,  B41M5/385 ,  B32B27/38

Abstract: A thermal transfer recording medium which includes a dye layer having storage stability and sufficient color development properties, and enables improvement in image quality of the printed matter. The thermal transfer recording medium according to an embodiment of the present invention includes a substrate, a heat-resistant lubricating layer provided on a first surface of the substrate, and a dye layer provided on a second surface of the substrate, wherein the dye layer includes a dye, a binder A, and a binder B which contains at least one of polyvinyl butyral and polyvinyl acetal, a solubility parameter of the binder A is within a range of 9.5 (cal/cm3)1/2 or more and 12.0 (cal/cm3)1/2 or less, and a melting viscosity of the binder A at 200° C. is 400 Pa sec or less.