History
| April 1898 | Hisaya Iwasaki purchased a paper mill operated by Walsh Brothers in Sannomiya, Kobe, and formed Kobe Paper Mill Company to start production and sale of paper. (Founding of the company) |
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| June 1901 | Mill moved from Sannomiya, Kobe to Takasago-shi, Hyogo-ken. (present Takasago Mill) |
| December 1902 | Began production of Kin-bishi (wood free paper). |
| June 1904 | Changed company name to Mitsubishi Paper Mills Company. |
| June 1911 | Established Taiwan Mitsubishi Paper Mills Company in Taiwan to produce bamboo pulp by sulfite process. |
| April 1916 | Closed Taiwan Mitsubishi Paper Mills Company. |
| February 1917 | Constructed Nakagawa Mill in Niijuku, Katsushika-ku, Tokyo. |
| November 1917 | Incorporated and changed name to Mitsubishi Paper Mills, Ltd. |
| March 1918 | Began production of real art paper. |
| December 1925 | Moved head office from Takasago, Hyogo to Yurakucho, Chiyoda-ku, Tokyo. |
| June 1935 | Began production of Baryta paper (photographic base paper). |
| February 1944 | Merged with the Kyoto Photographic Industry Company, Ltd. And began trial production of photographic paper in the Kyoto Trial Mill. (present Kyoto Mill) |
| August 1944 | Merged with Naniwa Paper Mill Ltd. Renamed Naniwa Mill with the beginning of paperboard production. |
| August 1946 | Association of Mitsubishi Paper Mills labor unions organized. |
| April 1950 | Individual mills' labor unions federated into independent union called Mitsubishi Paper Mills Labor Union. |
| July 1950 | Released Gekko V (blue-tint black) photographic paper utilizing fluorescent materials. Welcomed by much acclaim. |
| November 1952 | Mitsubishi Paper Mills Health Insurance Cooperative organized. |
| June 1962 | Technical license agreement concluded with National Cash Register Company, U.S.A. for the domestic production of NCR paper in Japan. |
| April 1965 | Released Mitsubishi Color Photographic Paper. |
| April 1966 | Constructed Hachinohe Mill in Hachinohe-shi, Aomori. |
| April 1966 | Merged with Shirakawa Pulp Industry Ltd. and acquired Shirakawa Mill and Kitakami Mill. (present Kitakami Hitec Paper Corp.) |
| December 1966 | Closed Naniwa Mill. |
| August 1971 | Established Central Research Laboratory. |
| July 1974 | Released the Mitsubishi Silver Master direct platemaking system. |
| July 1979 | Established Printing Center. |
| July 1981 | Moved head office to 3-4-2 Marunouchi, Chiyoda-ku, Tokyo. (Present location) |
| April 1986 | Established Process Developement Laboratory, Closed Printing Center. |
| January 1989 | Established Tsukuba Research Laboratory. (present Tsukuba R&D Laboratory) |
| August 1989 | Established Mitsubishi Paper GmbH in Dusseldorf, (Germany). |
| August 1990 | Established joint venture with Mitsubishi Corporation in Chili called Forestal Tierra Chilena Ltda. to start afforestation overseas. |
| January 1995 | Established joint venture called Mitsubishi Imaging (MPM), Inc in New York, U.S.A. |
| January 1999 | Acquired stock of two German paper companies. (Present Mitsubishi Hitec Paper Bielefeld GmbH and Mitsubishi Hitec Paper Flensburg GmbH) |
| June 2002 | Established Mitsubishi Paper Holding（Europe）GmbH （Germany）on top of Mitsubishi Paper GmbH and two subsidiary companies in Germany（Mitsubishi Hitec Paper Bielefeld GmbH and Mitsubishi Hitec Paper Flensburg GmbH.） |
| March 2003 | Closed Nakagawa Mill. |
| April 2005 | Spun off Kitakami Mill to create Kitakami Hitec Paper Corp. |
| August 2007 | Formed business alliance with FUJIFILM in the photography business. |
| November 2007 | Formed operating alliance with Oji Paper in relation to the communication paper business. |
| November 2007 | Established Zuhai MPM Filter, Ltd. in China to process filter products. |
| October 2010 | Two subsidiary companies in Germany(Mitsubishi Hitec Paper Bielefeld GmbH and Mitsubishi Hitec Paper Flensburg GmbH) merged,established Mitsubishi Hitec Paper Europe GmbH. |
| October 2011 | Acquired all stocks of KJ Specialty Paper Co.,Ltd. （Subsidiary of Kohjin Co.,Ltd.） |
| July 2012 | Moved head office to 2-10-14 Ryogoku, Sumida-ku, Tokyo. |
| April 2014 | Established MPM Operation Co., Ltd. |
| March 2016 | Established joint venture with Oji Green Resources Co., Ltd. called MPM OJI |
| April 2017 | Established joint venture with Oji Nepia Co., Ltd. called MPM OJI Home Products Co., Ltd. |
| March 2019 | Mitsubishi Paper Mills became an equity-method affiliate of Oji Holdings Corporation through the third-party allocation of shares etc. |
| June 2021 | Established Takasago R&D Laboratory. |
| October 2021 | Closed Tsukuba R&D Laboratory. |
| March 2022 | Closed Process Developement Laboratory. |
