公开(公告)号：US12110403B2

公开(公告)日：2024-10-08

申请号：US17029607

申请日：2020-09-23

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Yuichi Hoshino ,  Masatoshi Saito

IPC: C09D11/322 ,  A61K9/20 ,  C09D11/38

CPC classification number: C09D11/322 ,  A61K9/2072 ,  C09D11/38

Abstract: An inkjet ink in which a food color containing at least sodium copper chlorophyllin and a pigment other than sodium copper chlorophyllin is dispersed in a dispersion medium containing propylene glycol, and which prevents the occurrence of precipitation of the pigment components or other components even when the inkjet ink is stored for a long period of time, and there is also provided a tablet having a print pattern printed by the inkjet ink. The inkjet ink of the present embodiment, which is edible, comprises a food color containing at least sodium copper chlorophyllin and a pigment other than sodium copper chlorophyllin, and a dispersion medium containing propylene glycol, and has a propylene glycol content in the range of 0.001 mass % or more and 19 mass % or less relative to the total mass of the inkjet ink.

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.