Other

Ricoh Company, Ltd.

Makoto Shinohara

Makoto Saito

Takeshi Shimizu

Takashi Tomita

Tetsuya Nakai

Hiroshi Takahagi

Hiroshi Azami

Hideaki Mamiya

Yoichi Uehara

Masato Kouno

Hirofumi Iwakiri

Yasuhiko Kawamura

Fumitomo Kawahara

Katsuo Arai

An ink-jet recording head includes a recording head and pressure damper assembly module including a recording head part at a lower position having nozzle holes on an under surface and an ink passage communicating with the nozzle holes, and a pressure damper part higher than the recording head part having an ink containing chamber inside. The ink-jet recording head further includes first flexible tube supplying ink in the ink containing chamber to the ink passage and connecting an ink discharge part communicating with the ink containing chamber and an ink supply part at one end side in the recording head part communicating with one end of the ink passage; and a second flexible tube connected with another end side in the recording head part and communicating with another end of the ink passage. At least the inside of the first flexible tube is filled with the ink.

Ink-jet recording head and ink-jet recording apparatus having the same

The present invention aims at providing a method for producing a nutrient solution for plant culture utilizing an organic material and providing a method of hydroponic culture in which a plant can be cultured while directly adding the organic material to the nutrient solution. The present invention provides a method for producing a biomineral-containing substance comprising establishing a microbial ecosystem necessary for stable mineralization of organic material by adding the organic material to water gradually or at one time and fermenting the resulting mixture and a method of hydroponic culture comprising utilizing the biomineral-containing substance obtained according to the method as at least a part of the nutrient solution and culturing the plant while directly adding the organic material to the nutrient solution.

Method for producing biomineral-containing substance and organic hydroponics method

Wafer holder

Growing community of inventors

Kanagawa, Japan

Makoto Shinohara