公开(公告)号：US12091563B2

公开(公告)日：2024-09-17

申请号：US17403581

申请日：2021-08-16

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Yuichi Hoshino ,  Masato Fukushiro ,  Hideki Ishikawa ,  Masatoshi Saito

IPC: C09D11/328 ,  A61K9/20 ,  C09D11/40

CPC classification number: C09D11/328 ,  A61K9/20 ,  C09D11/40

Abstract: An inkjet ink that shows only a small amount of discoloration over time and is capable of printing with a stable color, not only when printed on a surface of a print object having a relatively low ink permeability, but also when printed on a surface of a print object having a relatively high ink permeability, and provide a printed item including a printed area printed using the inkjet ink. A gray ink according to the present embodiment is an edible inkjet ink which contains at least a first colorant which is a food dye and a second colorant which is a food dye, and the first colorant is at least one of Red No. 3, Red No. 40, Red No. 104, Red No. 105, and Red No. 106.