US 11,912,053 B2
Thermal transfer sheet, coating liquid for release layer, and method for producing thermal transfer sheet
Kazuya Yoshida, Tokyo (JP); Tomohiko Imoda, Tokyo (JP); Yoshihiro Imakura, Tokyo (JP); Yasuyuki Shouji, Tokyo (JP); Daisuke Fukui, Tokyo (JP); Ryoji Hattori, Tokyo (JP); and Koichiro Kuroda, Tokyo (JP)
Assigned to Dai Nippon Printing Co., Ltd., Tokyo (JP)
Filed by Dai Nippon Printing Co., Ltd., Tokyo (JP)
Filed on Sep. 15, 2021, as Appl. No. 17/447,707.
Application 17/447,707 is a division of application No. 16/768,365, granted, now 11,148,450, previously published as PCT/JP2019/003355, filed on Jan. 31, 2019.
Claims priority of application No. 2018-015583 (JP), filed on Jan. 31, 2018; application No. 2018-015584 (JP), filed on Jan. 31, 2018; and application No. 2018-125383 (JP), filed on Jun. 29, 2018.
Prior Publication US 2021/0402819 A1, Dec. 30, 2021
Int. Cl. B41M 5/44 (2006.01); B41M 5/382 (2006.01); B41M 5/40 (2006.01); B41M 5/52 (2006.01); B41M 7/00 (2006.01)
CPC B41M 5/443 (2013.01) [B41M 5/38214 (2013.01); B41M 5/405 (2013.01); B41M 5/52 (2013.01); B41M 7/0027 (2013.01); B41M 5/382 (2013.01); B41M 2205/10 (2013.01); B41M 2205/38 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A thermal transfer sheet comprising:
a substrate; and
a transfer layer provided on the substrate,
wherein the transfer layer has a single-layer structure consisting of a protective layer or a layered structure including a protective layer,
wherein the protective layer contains a cured product of an active ray-curable resin,
wherein an initial breakage peeling-off force when the transfer layer is peeled under conditions of a peeling-off temperature of 20° C. or more and 40° C. or less and a peeling-off angle of 90° is 49 N/m or less, and
wherein the protective layer further comprises a first filler having a volume average particle size in a range of 0.1 μm or more and 2 μm or less, and a second filler having a volume average particle size of 40 nm or less.