公开(公告)号：US20210024760A1

公开(公告)日：2021-01-28

申请号：US16966091

申请日：2019-01-28

申请人： DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.

发明人： Kasumi IGARASHI ,  Hayakazu MASAOKA

IPC分类号： C09D11/037 ,  B41M5/32 ,  B41M5/46 ,  B65D25/20 ,  C09D11/50 ,  C09D11/107

摘要： The present invention provides a laser marking ink composition with which a laser marking layer that enables recording with satisfactory visibility can be formed. This laser marking ink composition is a laser marking ink composition containing a binder resin (A), and titanium oxide (B) that causes color development in the laser marking layer by irradiation with laser light, wherein the titanium oxide (B) comprises at least one surface-treated titanium oxide (BI) selected from the group consisting of alumina-treated titanium oxide (b1), alumina-silica composite-treated titanium oxide (b2), and ATO-treated titanium oxide (b3), and at least one of condition 1 such that a ratio of a content of the surface-treated titanium oxide (BI) to a content of the binder resin (A), (BI/A), is 2.5 to 6.5 on a solid content mass ratio basis and condition 2 such that a ratio of a content of the titanium oxide (b3) to a content of the binder resin (A), (b3/A), is 1.0 to 6.5 on a solid content mass ratio basis is satisfied.