About Us

OKI Data (President & CEO Harushige Sugimoto, Minato-ku, Tokyo) , an OKI Group company specializing in the printer business, and OKI Digital Imaging (President & CEO Mitsuhiko Ogihara, Takasaki-city, Gunma) have offered LED light source device to Tokyo University of Agriculture and Technology for Advanced Plant Factory Research Institute of Department of Life Science and Biotechnology（President Tadashi Matsunaga, Fuchu-city, Tokyo). The institute has been selected as a recipient of "Federal funding of advanced plant factory research institute" by Ministry of Economy, Trade, and Industry in 2009.

The goal of this institute is the management of plant factory that enables to expect profitability and stable supply of blueberries while its supply is scarce for its demand. The research aims the increased yield of approximately six times larger than the current value. In recent years, usage of LED has been receiving high expectation in the management of plant factories that can provide stable supplies of high quality products without using any pesticide because the electricity takes up a large percentage of the running cost of such factories. LED light source device used for plant factories needs to have high luminance to achieve high yield and high quality (large-fruit /high sugar content /high antioxidant effect). Tokyo University of Agriculture and Technology was therefore looking for a manufacturer with the ability to produce high luminance LED light source device.

OKI Digital Imaging developed LED light source device that enables irradiation from low luminance to high luminance （0～3000µmol m-2 s-1） that effectively combines blue, green, red, and infrared of LED depending on the growth of blueberries. Especially red and blue LED wavelengths match with the peak absorption level of chlorophyll, and also improve photosynthesis for increased yield, and increase the content of anthocyanin(*1) of fruits.