A predispersion (a dispersion of flocculated particles of pigments) obtained by feeding the pigments into a solvent containing a dispersion assistant and predispersing (coarsely dispersing) the pigments by a propeller stirring machine, etc., is supplied to a 'Crea Mix (R)' which is the stirring apparatus 12 and is subjected to dispersion treatment (fine dispersion treatment). 分散助剤を含有する溶媒中に顔料を投入し、プロペラ攪拌機などにより予備分散(粗分散)して得られる予備分散液(顔料の凝集粒子の分散液)を、攪拌装置12である「クレアミックス」に供給し分散処理(微分散処理)する。 - 特許庁