| 1910 |
1910 - Era of Special Paper |
| 1914 |
Founded Takagawa Paper Works in 1914 (Taisho 3) and began research and trials on electrical insulating paper and electrical communication paper. |
| 1914 |
Founded Tomoe River Paper Co., Ltd. in 1914 (Taisho 3), and began research and development of electrical insulation paper and electrical communication paper. Achieved domestication of electrical insulation paper for the first time. |
| 1914 |
Founded Tomogawa Paper Mill in 1914 (Taisho 3), achieving domestication and mass production of electrical insulating paper |
| 1914-06-19 |
Founded: June 19, 1914 (Taisho 3) (Founding Anniversary) |
| 1917 |
Around 1917 (Taisho 6), Takagawa Paper Works Co., Ltd. was established with a capital of 200,000 yen, and Gen Saburo Inoue became the first president. |
| 1917 |
In 1917 (Taisho 6), Tomoe River Paper Co., Ltd. was established with a capital of 200,000 yen, and Sozaburo Inoue became the first president. |
| 1917 |
Established Tomogawa Paper Co., Ltd. in 1917 (Taisho 6), with a capital of 200,000 yen, with Genzaburo Inoue as the first president |
| 1917-08-15 |
Established: August 15, 1917 (Taisho 6) |
| 1918 |
Established Chousei Printing Co., Ltd. (then Chouseido Printing Co., Ltd.) in 1918 (Taisho 7). |
| 1933 |
Founded NichiRica Co., Ltd. (formerly Japan Rika Paper Works Co., Ltd.) in 1933 (Showa 8). |
| 1933 |
Around 1933 (Showa 8), Yousou Factory (now Shizuoka Office) was established. |
| 1933 |
Founded Japan Rika Paper Co., Ltd. (now NichiRica Co., Ltd.) in 1933 (Showa 8). |
| 1933 |
In 1933 (Showa 8), established the Murojime Factory (now Shizuoka Office) in Shizuoka City, and started developing specialty paper and manufacturing general paper. |
| 1945 |
Around 1945 (Showa 20), the Shinguu Factory was established and began in-house production of kraft pulp. |
| 1945 |
Established the Shingu Factory in 1945 (Showa 20), and began in-house production of craft pulp. |
| 1945 |
Set up the Shingu Factory in 1945 (Showa 20) and began in-house production of craft pulp |
| 1948 |
Established Sanwa Paper Works Co., Ltd. in 1948 (Showa 23). |
| 1948 |
Established Sanwa Paper Industry Co., Ltd. in 1948 (Showa 23). |
| 1949 |
Around 1949 (Showa 24), the Paper Technology Research Institute (now Technology Research Institute) was established. |
| 1949 |
Set up the Paper Technology Research Institute (now Technology Research Institute) in 1949 (Showa 24), and began comprehensive research on paper pulp. |
| 1958 |
In 1958 (Showa 33), a Shouchi Paper Factory was established within the Shinguu Factory. |
| 1958 |
In 1958 (Showa 33), installed a paper-making factory within the Shingu Factory, establishing an integrated system from pulp to paper. |
| 1958 |
Established a paper-making factory within the Shingu Factory in 1958 (Showa 33), establishing an integrated system from pulp to paper |
| 1960 |
In the 1960s, entered the era of information recording media. |
| 1961 |
Listed on the First Section of the Tokyo Stock Exchange in 1961 (Showa 36). |
| 1961 |
Listed on the First Section of the Tokyo Stock Exchange |
| 1963 |
In 1963 (Showa 38), the headquarters building in Kyobashi, Tokyo, commemorating the 50th anniversary of founding, was completed. |
| 1963 |
The headquarters building was completed in Kyobashi, Tokyo, to commemorate the 50th anniversary of founding |
| 1963 |
The headquarters building was completed in Kyobashi, Tokyo, to commemorate the 50th anniversary of founding |
| 1964 |
In 1964 (Showa 39), the 50th anniversary celebration ceremony was held at the Sunpu Hall. |
| 1964 |
50th anniversary ceremony held. A joint memorial ceremony for Uomuro and Shimizu was held at Sunpu Hall |
| 1964 |
50th anniversary ceremony held. A joint memorial ceremony for Uomuro and Shimizu was held at Sunpu Hall |
| 1965 |
Launched the first product, plate-making toner, into the market |
| 1965 |
Launched the first product, plate-making toner, into the market in 1965 |
| 1972 |
In 1972 (Showa 47), the Paper Technology Research Institute was renamed to 'Technology Research Institute'. |
| 1972 |
In 1972 (Showa 47), the first toner factory was completed. |
| 1972 |
Renamed the Paper Technology Research Institute to 'Technology Research Institute' to accelerate the development of new businesses beyond paper |
| 1972 |
Completion of Toner Factory No. 1 |
| 1972 |
Renamed the Paper Technology Research Institute to 'Technology Research Institute' to accelerate the development of new businesses beyond paper |
| 1972 |
Completion of Toner Factory No. 1 |
| 1973 |
Entered the market and built a global supply system that has made us the world's No. 1 toner-only manufacturer today |
| 1973 |
Entered the toner market in 1973 |
| 1977 |
After entering the clean adhesive processing business for polarizing films in 1977, we expanded the application of the newly launched clean coating and lamination technology to the electronic materials field. |
| 1978 |
In 1978 (Showa 53), TOMOEGAWA (U.S.A.) INC. was established in Illinois, USA. |
| 1978 |
Established TOMOEGAWA (U.S.A.) INC. in Illinois, USA |
| 1978 |
Built a new factory and established a further production increase system. |
| 1980 |
In the 1980s, entered the electronics era. |
| 1981-10 |
Started manufacturing toner |
| 1984 |
Established TOMOEGAWA EUROPE B.V. in Amsterdam, Netherlands, and began selling toner and processed paper products. |
| 1984 |
The second chemical products factory was completed as a toner filling plant. |
| 1984 |
Developed a lead frame fixation tape independently in 1984. |
| 1987 |
Established Shin-Bakagawa Processing Co., Ltd. and Bakagawa Logistics Service Co., Ltd. |
| 1989 |
Established a dedicated factory for high-performance products such as electronic component materials and magnetic recording products at the Shimizu plant. |
| 1992 |
Established a dedicated factory for adhesive processing of LCD displays within the Youshou factory. |
| 1995 |
Closed the Shinguu plant and withdrew from the pulp business. |
| 2000 |
In the 2000s, entered the FPD era. |
| 2001 |
Established a printer paper processing plant in Chihuahua, Mexico. |
| 2001 |
Established an analysis center within the Shizuoka plant. |
| 2002 |
Established a production factory for display optical films and adhesive tapes for electronic components within the Shizuoka plant. |
| 2004 |
Established TOMOEGAWA HONG KONG CO., LTD. in Hong Kong. |
| 2005 |
Established Bakagawa Holdings Co., Ltd. Heizhou, a holding company overseeing Chinese operations. |
| 2005 |
Delisted from the Osaka Stock Exchange. |
| 2005 |
Established Bakagawa Imaging Technology (Heizhou) Co., Ltd., a toner manufacturing and sales company in Heizhou, Guangdong Province, China, and completed the Heizhou plant in April 2006. |
| 2005 |
The third chemical products factory was completed within the Shizuoka plant. |
| 2005 |
Established Bakagawa Fine Coding Co., Ltd. (now TFC Co., Ltd.), which develops and manufactures optical films in Tsuruga City, Fukui Prefecture. |
| 2005 |
To cope with the increasing demand for toner, the Chemical Products Factory No. 3 was completed at the Shizuoka plant |
| 2005 |
Established Bachaow Yingxiang Technology (Ezhou) Co., Ltd. in Heyuan City, Guangdong Province, China, which manufactures and sells toner. |
| 2006 |
The paper division was spun off and New Tamoegawa Paper Co., Ltd. was established. |
| 2006 |
The company adopted the trade name "TOMOEGAWA" and introduced a new logo. |
| 2006 |
Established Tamoegawa Korea Co., Ltd. in South Korea. |
| 2006-04 |
The Heyuan factory was completed in April 2006. |
| 2009 |
Established AT Electrolode Co., Ltd. as a joint venture for capacitor and battery electrode business. |
| 2010 |
Established TOPPAN TOMOEGAWA Optical Products Co., Ltd. (now TOPPAN TOMOEGAWA Optical Film Co., Ltd.) to manufacture anti‑reflective films for displays. |
| 2011 |
Transferred the printer paper processing business in Chihuahua, Mexico. |
| 2011 |
Established Nissai Imaging Technology (Jiujiang) Co., Ltd. in Jiujiang, Jiangxi Province, China, to manufacture and sell toner. |
| 2012 |
Invested in Aura Paper Industries (India) Pvt. Ltd., an electrical insulation paper manufacturer in India. |
| 2013 |
Absorbed and merged with New Tamoegawa Paper Co., Ltd. |
| 2013 |
Opened a representative office in Kaohsiung, Taiwan. |
| 2014-06-19 |
Celebrated the 100th anniversary of founding on June 19. |
| 2015 |
Established the unified brand "iCas" for heat, electrical, and electromagnetic wave control products. |
| 2015 |
Founded the unified brand "iCas" for heat, electricity, and electromagnetic wave control-related products. |
| 2016 |
Established Tamoegawa Taiwan Co., Ltd. as a subsidiary to replace the representative office in Taiwan. |
| 2016 |
Acquired additional shares and made Aura Paper Industries (India) Pvt. Ltd. a subsidiary. Renamed it to TOMOEGAWA Aura India Pvt. Ltd. |
| 2016 |
Established Tomoegawa Co. Middle East in Dubai, United Arab Emirates. |
| 2018 |
Established Tamoegawa (Guangzhou) International Trading Co., Ltd. for the sale of copier and printer toner in China. |
| 2018 |
Moved headquarters to Kyobashi Trust Tower in Chuo‑ku, Tokyo. |
| 2020 |
Made Chousei Printing Co., Ltd. a consolidated subsidiary. |
| 2020 |
Ended production activities at TOMOEGAWA (U.S.A.) Inc. |
| 2020 |
Closed Tomoegawa Co. Middle East. |
| 2020 |
In the 2020s, moving into a new era. |
| 2021 |
Osaka Sales Office Abolished |
| 2022 |
Transition to the Tokyo Stock Exchange Standard Market |
| 2022 |
Fully acquired Japan Rika Paper Co., Ltd. (now NichiRica Co., Ltd.) |
| 2022 |
Fully acquired Sanwa Paper Industry Co., Ltd. |
| 2023 |
Change in industry classification at the Tokyo Stock Exchange Standard Market from "Pulp & Paper" to "Chemicals" |
| 2023 |
Establishment of Tohoku Sales Office |
| 2024 |
Celebrating 110th anniversary, changed company name from "Tomoe River Paper Co., Ltd." to "Tomoe River Corporation" |
