| 1923 |
Establishes Mitsuboshi Manufacturing & Company in Sakai (Osaka) to manufacture pigments. |
| 1925 |
Begins manufacturing printing inks by using its original pigments. |
| 1945 |
Domestic facilities totally destroyed during the World War II, and all overseas branches confiscated at the end of the war. |
| 1959 |
The company reorganizes and changes its name to Mitsuboshi Printing Ink Co., Ltd. |
| 1965 |
New ink plant fully equipped with the latest technologies and engineering opens in Sakai (Osaka), and receives a Government (MITI) appointment as Model Plant. |
| 1969 |
The first in the world to develop RM (Ready-Mixed) type Offset Gold Ink of outstanding stability and performance. Expands production facilities to meet rapidly growing sales. |
| 1975 |
Supported and necessitated by growing sales Head Office relocated to new location at Tennoji, Osaka. |
| 1976 |
For its unique features RM (Ready-Mixed) Gold Ink receives a Patent from Japan Patent Office. |
| 1982 |
Patent granted to RM Royal Gold Ink by patent offices of the USA, F.R. of Germany and Switzerland. |
| 1992 |
Develops and sells, as among one of the first ink companies in Japan, low VOC and environmentally-friendly Soy Inks using soy-bean oil. |
| 1997 |
Ink plant in Sakai totally renovated with the latest machines, equipments and system to further improve production capacity and efficiency. |
| 1999 |
To expand the business Kyoto Branch moves into new built location. |
| 2000 |
Ink and varnish plant in Sakai receives ISO-9001 Certification. |
| 2001 |
Becomes the first in the industry to receive Recognition for Excellent in Pursing Quality Control from the Office of Osaka Prefecture. |
| 2005 |
Develops and sells environmentally-friendly Water-Based Flexo and Gravure Gold and Silver Inks. |
| 2006 |
New Head Office constructs at the location of ink plant in Sakai to achieve better effects on both production and sales by concentrating Head Office and Plants. |
| 2010 |
Develops and sells LED-UV Gold and Silver Ink for LED curing system for energy conservation. |
| 2015 |
Develops and sells UV No.1 Gold and Silver Ink having better shelf-life, excellent metallic shine and good printability. Develops and sells powder-less Process Ink New KNS Process Ink. |
| 2016 |
Develops and sells H-UV and LED-UV No.1 Gold and Silver Ink based on UV No.1 Gold and Silver Ink. |