Kyocera Corporation

Takehisa Higa

Kazuo Watada

Kunihide Shikata

Masamichi Shingu

Masayuki Onitsuka

Akio Yuguchi

Satoshi Kiyota

The light shielding member of the present disclosure includes an aluminum oxide ceramics including an oxide of titanium whose composition formula is shown as TiO(1≤x<2), and a total content of Fe, Ni, Co, Mn and Cr is 260 mass ppm or less.

Light shielding member

Provided is a channel member having a channel which penetrates from one main surface to the other main surface. The channel is formed with its diameter increased toward the other main surface from the one main surface. A parallel section which is substantially parallel to the other main surface and is exposed to the other main surface is provided on the inner surface of the channel.

Channel member, inkjet head structure and inkjet recording device

The ink delivery holeof the support membermade of ceramics that supports the recording headconsists of the elongated holeprovided with the inclined bottom surfacethat opens on the ink jet recording head side and deepens toward the center and the small-diameter holethat communicates therewith, while surface roughness of at least the inclined bottom surfaceof the ink delivery holeis set in a range from 0.4 to 1.0 &#x3bc;m in terms of arithmetic mean roughness (Ra) and the void ratio is set in a range from 5 to 30%. This constitution prevents bubbles, if ever entered, from staying in the ink delivery hole of the support member that supports the ink jet recording head, and enables it to stably discharge ink droplets of a predetermined quantity.

Ink jet recording head structure, ink jet printer, powder molding method, method of manufacturing recording head structure supporting member, and powder molding press apparatus

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Higashiomi, Japan

Takehisa Higa