| 摘要 |
PROBLEM TO BE SOLVED: To obtain an ink not causing plugging of nozzles and ink supply passages and improved in redispersibility, storage stability and plate wear by dispersing resin particles having a specified composition in a nonaqueous carrier liquid having a specified electric resistance and a specified permittivity. SOLUTION: A nonaqueous carrier liquid having an electric resistance of 10<9> Ωcm or above and a permittivity of 3.5 or below is used. Polymers particles obtained by the polymerization and granulation of a mixture containing at least one member selected among a monofunctional macromonomer having a weight-average molecular weight of 2×10<4> or below and prepared by bonding a polymerizable double bond group of formula II to one terminal of the main chain of a polymer comprising a monofunctional monomer insoluble in the nonaqueous solvent when polymerized and comprising repeating units of formula I, a macromonomer having a weight-average molecular weight of 1×10<3> to 2×10<4> and prepared by bonding a polymerizable double bond group of formula I to one end of the main chain of a polymer and based on a monomer component of formula III and a dispersion-stabilizing resin colloidially dispersed in a nonaqueous solvent are dispersed in the liquid. |
