摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A glass chopped strand mat binder according to the invention can be supplied in an amount smaller than a conventional binder amount and can form a glass chopped strand mat having desired uniform strength. The invention is a glass chopped strand mat binder that includes a polyester resin powder (A) having a volume average particle diameter DV of 100 to 250 μm, containing at most 20% by weight of particles with a volume based particle diameter of at least 300 μm, and having a coefficient CV of variation of volume based particle diameter distribution of 0.1 to 30% as measured by the laser diffraction scattering method.
摘要:
The integrated type electrophotographic light-sensitive material is disclosed, the material comprising two layers comprising (1) an electric charge generating layer containing an electric charge generating material and (2) an electric charge transporting layer containing an electric charge transporting material, provided on an electrically conductive base, wherein said electric charge generating layer contains at least one hydrazone compound represented by the following general formulas (I)-(V): ##STR1##
摘要:
Disazo compounds of a specified structure as a photoconductive element for photoreceptors in an electrophotographic process, which achieve higher photosensitivity and higher durability compared with conventional organic photoconductive materials, useful with copying machines, printers, video camera pickup tubes and semiconductor circuits for signal transfer and scanning.
摘要:
Novel compounds are disclosed which are composed of a barbituric acid residue or a thiobarbituric acid residue and a pyrylium salt residue, thiopyrylium salt residue, benzopyrylium salt residue, or a benzothiopyrylium salt residue. The compounds are suitable as charge generating materials for an electrophotographic light-sensitive material of the type containing a charge generating material and a charge transporting material in one layer or two separate layers. The use of the compounds improves the durability and light-sensitivity of the light-sensitive material.