Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Shiro Yamamiya

Michiei Nakamura

Yoshio Abe

Shigeru Sakamoto

Mitsuo Yamazaki

Hisao Okamoto

Hiroaki Saikatsu

Tetsuo Fukuda

Shojiro Horiguchi

Yoshiyuki Zama

Kazuo Kanou

Masaru Hasegawa

Kimihide Kawamura

Katsuhiko Kitabayashi

Shozo Ohira

Pigment dispersions for color filters are composed of pigments, dispersants, film-forming resins and liquid media. The dispersants comprises compounds represented by the following formula (I):

Pigment dispersions for color filters, fabrication process of color filters, and color filters

Dispersants for organic pigments comprise compounds represented by the following formula (I):

Pigment dispersants, pigment dispersions and writing or recording pigment inks

Disclosed is a pigment dispersant represented by the following formula (1): ##STR1## wherein X represents a hydrogen atom or an acylamino group; Y represents a specific aromatic group; Z represents a specific aromatic group or a C.sub.2-30 aliphatic, alicyclic or hetero-alicyclic amine reaction residual group having at least one amino group; G represents a reaction residual group of at least one compound selected from C.sub.2-30 aliphatic, alicyclic and hetero-alicyclic hydrocarbons each of which has at least one amino group; n is an integer of from 0 to 3; and when N stands for O, Z represents a reaction residual group of a C.sub.2-30 aliphatic, alicyclic or hetero-alicyclic polyamine having at least two amino groups. A pigment dispersion making use of the dispersant and a color filter produced from the pigment dispersion are also disclosed.

Pigment dispersant, pigment dispersion, and pigment dispersion for color

A print is produced by printing or coating an infrared reflective coloring agent and another printing ink containing an infrared absorptive coloring agent in combination on a base material. The print therefore contains visually-recognizable information along with other information which is recognizable by infrared rays.

Prints and production method thereof

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Tokyo, Japan

Shiro Yamamiya