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Dive into the research topics where Kengo Ito is active.

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Featured researches published by Kengo Ito.


Clays and Clay Minerals | 2000

INTERCALATION CHARACTERISTICS OF 1,1′-DIETHYL-2,2′-CYANINE AND OTHER CATIONIC DYES IN SYNTHETIC SAPONITE: ORIENTATION IN THE INTERLAYER

Masashi Iwasaki; Masaki Kita; Kengo Ito; Atsuya Kohno; Koushi Fukunishi

The basal spacings of complexes of saponite with five cationic dyes, 1,1′-diethyl-2,2′-cyanine, crystal violet, methylene blue, 1,1′-diethyl-2,2′-carbocyanine, and 1,1′-diethyl-2,2′-dicarbocyanine, varied with degree of saturation of each dye. At low loading of dye to saponite, each cationic dye showed nearly the same absorption spectrum in the UV-visible region as that of its dilute aqueous solution, whereas the spectrum changed distinctly at high loading. With increasing degree of dye loading, the absorption band shifted to longer wavelength for 1,1′-diethyl-2,2′-cyanine (J band) and to shorter wavelength for the others (D, H bands). On the basis of the basal spacing of each respective dye-clay complex, the orientation of the intercalated dye molecules is proposed as follows: the major plane of the cationic dye lies horizontal to the 2:1 layer surface at low loading. With increasing loading, the dye molecules interact with adjacent dye molecules and orient vertically to the 2:1 layer at high loading near the cation-exchange capacity.


Archive | 1996

Printing apparatus and recording solution

Toshio Fukuda; Makoto Ando; Kengo Ito


Archive | 1990

Display composition, coloring pigment, and recording material

Kengo Ito


Archive | 1992

Recording material with a display composition including a coloring pigment

Kengo Ito


Archive | 1997

Printing paper, dye-receiving layer forming composition for preparing it, ink composition suitable for it, and image forming method using them

Kengo Ito; Yoshio Fujiwara


Archive | 1992

Image-forming method, and an ink ribbon and a printing sheet used for the method

Kengo Ito


Archive | 1994

Composition for fixing water-color ink, cover film for thermal transfer image using composition for fixing water-color ink, and thermal transfer image recorded medium

Kengo Ito; Motohiro Mizumachi; Yoshio Fujiwara; Satoru Shinohara


Archive | 1985

Photosensitive imaging material

Kengo Ito


Archive | 1993

Printing device and photographic paper

Shuji Sato; Masanori Ogata; Kengo Ito; Hiroyuki Shiota


Archive | 2002

Recording medium for printer

Yoshinori Nakamura; Kengo Ito

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Koushi Fukunishi

Kyoto Institute of Technology

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Atsuya Kohno

Kyoto Institute of Technology

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Masaki Kita

Kyoto Institute of Technology

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Masashi Iwasaki

Kyoto Institute of Technology

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