Abstract: A lithographic printing plate precursor includes a support and an ink-receptive layer containing a microcapsule.

Abstract: An ink composition contains: from 60% to 99% by weight of an organic solvent having a boiling point of from 110° to 210° C.; a colorant; and from 0.5% to 35% by weight of an oleophilic polymer.

Abstract: An electrostatic inkjet ink composition including: a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension at 25° C. of from 15 to 60 mN/m; a color material that is insoluble in the non-aqueous solvent; and a charge control agent that is soluble in the non-aqueous solvent, wherein the charge control agent contains a half-aside maleic acid copolymer containing repeating units represented by the formulae (Ia) and (Ib) as defined herein.

Abstract: Disclosed is an ink composition for inkjet recording. The ink composition for inkjet recording comprises a dispersion medium, a colorant, and a lipophilic substance. The ratio of the content of the colorant to the content of the lipophilic substance is from 1/2 to 1/24. The ink composition for inkjet recording also comprises a component soluble in the dispersion medium so that the ratio of the content of both of the colorant and the lipophilic substance to the content of the component soluble in the dispersion medium is from 1/0.1 to 1/1.

Abstract: An oil based ink composition for inkjet printer comprising a coloring agent and a binder resin in a non-aqueous dispersion medium, wherein the binder resin comprises a block copolymer having a repeating unit (a) corresponding to a monofunctional monomer containing an aliphatic cyclic hydrocarbon group having from 5 to 30 carbon atoms or a graft copolymer having the repeating unit (a) in the main chain thereof.

Abstract: A process for producing an ink composition containing a dispersing medium and particles containing a colorant and a polymer, the process comprising: wet dispersing the colorant and the polymer in the dispersing medium at a temperature of lower than 10° C.

Abstract: An oil based ink composition for inkjet printer comprising colored resin particles obtained by dispersion polymerization of a monofunctional polymerizable monomer (A) and a macromonomer (M) copolymerizable with the monomer (A) with coloring component fine particles comprising a surface-treated coloring agent, which are dispersed in a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension of from 15 to 60 mN/m at 25° C., as seed particles, in the presence of a dispersion stabilizer (P) soluble in the non-aqueous solvent and a polymerization initiator.

Abstract: A method for producing an ink for inkjet recording is provided and includes subjecting at least a resin and a colorant in succession to a step of melt-kneading, a step of crushing and a step of wet dispersing in a dispersion medium, in which colorant-resin particles obtained in the crushing step are stored in an external environment with an absolute humidity of 4 to 35 g/m3 and are subjected to a wet dispersion in a dispersion medium.

Abstract: An ink stock solution for ink jet recording comprising at least; a dispersion medium; coloring material particles containing a resin; and a dispersant, wherein a flowing characteristic of the ink stock solution shows Newtonian fluidity. The ink stock solution is obtained by subjecting the coloring material particles containing the resin to a swelling or a softening treatment during the dispersing process and/or after the dispersing process. Further, by diluting the ink stock solution with a dispersion medium, a viscosity of the ink for ink jet recording at 20° C. is made to be within a range of from 0.5 to 5 mPa·s.

Abstract: An oil based ink composition for inkjet printer comprising colored resin particles obtained by dispersion polymerization of a monofunctional polymerizable monomer (A) and a macromonomer (M) copolymerizable with the monomer (A) with coloring component fine particles comprising a surface-treated coloring agent, which are dispersed in a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension of from 15 to 60 mN/m at 25° C., as seed particles, in the presence of a dispersion stabilizer (P) soluble in the non-aqueous solvent and a polymerization initiator.

Abstract: A production method of an inkjet recording ink comprising a dispersion medium and coloring material particles containing at least a coloring material, which method comprises a step of removing minute coloring material particles from the coloring material particles.

Abstract: A process for, producing an ink composition comprising a non-aqueous solvent, a, coloring material coated with a resin insoluble in the non-aqueous solvent and a dispersant, which comprises a first dispersion-treating step wherein the coloring material coated with the resin insoluble in the non-aqueous solvent is subjected to dispersion treatment together with the dispersant in the non-aqueous solvent at a dispersion liquid temperature of from 10° C. to less than 40° C., and a second dispersion-treating step wherein the dispersion liquid-obtained in the first dispersion-treating step is further subjected to dispersion treatment at a dispersion liquid temperature of from 40 to 60° C.

Abstract: An electrostatic inkjet ink composition comprising: a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension at 25° C. of from 15 to 60 mN/m; a color material that is insoluble in the non-aqueous solvent; and a charge control agent that is soluble in the non-aqueous solvent, wherein the charge control agent contains a half-aside maleic acid copolymer containing repeating units represented by the formulae (Ia) and (Ib) as defined herein.

Abstract: An oil based ink composition for inkjet printer comprising a coloring agent and a binder resin in a non-aqueous dispersion medium, wherein the binder resin comprises a copolymer, which is insoluble in the non-aqueous dispersion medium and comprises (a) a monofunctional monomer A containing an aliphatic cyclic hydrocarbon group having from 5 to 30 carbon atoms and (b) a monofunctional monomer B, which is capable of copolymerizing with the monofunctional monomer A and a homopolymer of which is soluble in the non-aqueous dispersion medium.

Abstract: An oil based ink composition for inkjet printer comprising a coloring agent and a binder resin in a non-aqueous dispersion medium, wherein the binder resin comprises a block copolymer having a repeating unit (a) corresponding to a monofunctional monomer containing an aliphatic cyclic hydrocarbon group having from 5 to 30 carbon atoms or a graft copolymer having the repeating unit (a) in the main chain thereof.

Abstract: An oil based ink composition for inkjet printer comprising colored resin particles obtained by dispersion polymerization of a monofunctional polymerizable monomer (A) and a monofunctional polymerizable monomer (B) copolymerizable with the monomer (A) having a substituent containing a silicon atom and/or a fluorine atom with coloring component fine particles comprising a surface-treated coloring agent, which are dispersed in a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension of from 15 to 60 mN/m at 25° C., as seed particles, in the presence of a dispersion stabilizer (P) soluble in the non-aqueous solvent and a polymerization initiator.

Abstract: An oil based ink composition for inkjet printer comprising colored resin particles obtained by dispersion polymerization of a monofunctional polymerizable monomer (A) and a macromonomer (M) copolymerizable with the monomer (A) with coloring component fine particles comprising a surface-treated coloring agent, which are dispersed in a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension of from 15 to 60 mN/m at 25° C., as seed particles, in the presence of a dispersion stabilizer (P) soluble in the non-aqueous solvent and a polymerization initiator.

Abstract: An image forming method comprising ejecting an oil-based ink composition comprising: a non-aqueous dispersion medium; a coloring material; and a binder resin comprising a graft copolymer, wherein the graft copolymer comprises a monomer constituting a main chain moiety soluble in the non-aqueous dispersion medium and a macro monomer constituting a graft moiety insoluble in the non-aqueous dispersion medium.

Abstract: A lithographic printing plate precursor comprising an image-forming layer provided on a support by applying an electric field between the support and a dispersion containing an electric charged particulate high molecular polymer to cause electrodeposition of the particulate high molecular polymer on the support;

Abstract: There is disclosed a liquid developer composition for electrostatic photography, which comprises, in a nonaqueous solvent having an electric resistance of 10.sup.9 .OMEGA..cm or over and a dielectric constant of 3.5 or over, a toner particle, a charge-controlling agent or resin, and an acid group containing polymer soluble in said nonaqueous solvent and/or a quaternary ammonium salt.