公开(公告)号：US20210114394A1

公开(公告)日：2021-04-22

申请号：US17135518

申请日：2020-12-28

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Akira MOTOHASHI

IPC: B41M5/44 ,  B41M5/41 ,  B41M5/385

Abstract: A thermal transfer ribbon comprising a dye layer and a transferable protective layer repeatedly formed on one surface of a substrate, the transferable protective layer having a first layer formed on the substrate, and a second layer formed on the first layer. The first layer comprises an acrylic resin (X) containing methyl methacrylate, an acrylic resin (Y) containing a styrene resin, and a polyester resin (Z). X has a weight average molecular weight of 120000 or more, the mass ratio of X and Y is within the range of 1:9 to 9:1, and the mass of Z is 1% or more and 3% or less of the total mass of X and Y.

公开(公告)号：US20210178791A1

公开(公告)日：2021-06-17

申请号：US17186885

申请日：2021-02-26

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Akira MOTOHASHI

IPC: B41J31/08

Abstract: A thermal transfer ribbon including a substrate, the substrate has a surface provided with dye layer parts and transferable protective layer parts repeatedly formed thereon, and the transferrable protective layer parts include first layer parts formed on the substrate, and second layer parts formed on the respective first layer parts. The first layer parts contain a charge control agent, and the second layer parts contain an antistatic agent and a lubricant.