Hitachi Chemical Company, Ltd.

Osamu Higashida

Hitoshi Yamazaki

Masato Fukasawa

Takashi Ikeda

Shigeshi Ohno

Hatuo Sugitani

Isamu Moribe

Yuugo Kumagai

Michio Ogawa

Chiaki Okada

Tetsuya Fujii

Ryouji Tan

Hajime Yamamoto

The present invention relates to a light control film, comprising: two transparent electroconductive substrates; and a light control layer sandwiched between the two transparent electroconductive substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the concentration of the light control suspension in the vicinity of each of the transparent electroconductive substrates is smaller than that of the light control suspension in the middle in the thickness direction of the light control layer.

Light control film

The present invention relates to a light control film, comprising:

Light control film and light control glass

A dry toner composition comprising (A) a binder resin, (B) a colorant and (C) charge control agents comprising a special metal complex of oxycarboxylic acid (C-1) and a special metal complex of azo compound (C-2) can provide high quality images without causing toner flying even after printed for a long period of time, and thus is useful for providing a dry developer and a process for forming images using said dry developer.

Dry toner, dry developer and process for forming electrophotographic

A toner comprising a resin, a colorant and a positive charge control agent selected from the group consisting of mica, monoalkyl and dialkyl tin oxides and urethane compounds, said charge control agent having high positive charging ability and good dispersibility in the resin, can be used for developing to give good quality images, having high density in the image areas and low background in the non-image areas.

Positively chargeable powdered electrophotographic toner containing

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Hitachi, Japan

Osamu Higashida