Abstract: A negatively chargeable toner for developing latent electrostatic images comprising a coloring agent, a resin component which comprises a homopolymer of a first monomer having formula (I) or a copolymer of the aforementioned first monomer and a second monomer: ##STR1## wherein R.sup.1 represents --H or --CH.sub.3 ; R.sup.2 and R.sup.3 each represent --CN, --COOH or --NO.sub.2 ; R.sup.4 represents --F, --Cl or --Br; and n is an integer of 1 to 10.

Abstract: A toner for developing latent electrostatic images comprising a coloring agent and a fluorine-contained graft copolymer which is prepared by grafting a fluorine-contained monomer to a main polymer comprising a repeating unit represented by formula (I): ##STR1## wherein R and R' each independently represent H or CH.sub.3, and m represent san integer of 1 to 20.

Abstract: A toner for electrophotography is disclosed, which comprises as the main components a coloring component and a binder resin which is a block copolymer comprising a functional segment (A) consisting of at least one of a fluoralkyl acryl ester block unit or a fluoralkyl methacryl ester block unit, and a compatible segment (B) consisting of a fluorine-free vinyl or olefin monomer block unit.

Abstract: The present invention relates to a liquid developer for electrostatic latent images which comprises a toner comprising a colorant and a binding agent as the main components dispersed in an aliphatic hydrocarbon carrier liquid, characterized in that said colorant is prepared by using a yellow dye or pigment having the following general formula (I), ##STR1## (wherein X and Y represent --H, --OCH.sub.3, --Cl, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 CH.sub.3, --OCH.sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3 or --OCH.sub.2 CH.sub.2 CH.sub.3).

Abstract: A developer for electrophotography is disclosed, which comprises toner particles containing therein at least an ionomer resin, which toner particles may comprise a colorant which is prepared by a flushing method by using a pigment component and an ionomer resin, when necessary, with addition thereto a humic acid component selected from the group consisting of humic acid, a salt of humic acid, and a humic acid derivative.

Abstract: A developer for electrophotography is disclosed, which comprises toner particles containing therein at least an olefin resin having a melt index of 25.about.700 g/10 min, which toner particles may comprise a colorant which is prepared by a flushing method by using a pigment component and an olefin resin having a melt index of 25.about.700 g/10 min, when necessary, with addition thereto a humic acid component selected from the group consisting of humic acid, a salt of humic acid, and a humic acid derivative.

Abstract: This invention relates to a liquid developer for electrophotography comprising toner particles dispersed in a highly insulative aliphatic hydrocarbon and/or halogenated hydrocarbon carrier liquid having a low dielectric constant, said toner particles having two particle size distributions of a mean small particle size in the range of 0.01 .mu.m to 1 .mu.m and a mean large particle size in the range of 2 .mu.m to 30 .mu.m, characterized in that said large toner particles in the range of 2 .mu.m to 30 .mu.m are prepared by using polytetrafluoroethylene as the main binder resin.

Abstract: This invention relates to a non-aqueous type resin dispersion obtained by polymerizing a polymerizable composition containing at least monomer A represented by the general formula (I), ##STR1## (wherein, R.sup.1 represents --H or --CH.sub.3, X represents --COOC.sub.n H.sub.2n+1 or --OCOC.sub.n H.sub.2n+1, and n represents an integer of 6-20), monomer B represented by the general formula (II), ##STR2## (wherein, R.sup.2 and R.sup.3 represent --H or --CH.sub.3 and m represents an integer of 1-20), and monomer C having a carboxyl group or a glycidyl group in the presence of a polymerization initiator in an aliphatic hydrocarbon solvent.

Abstract: The present invention relates to a liquid developer for electrophotography having a solid content of not less than 10% by weight and the diffusion speed (as defined in the specification) of not lower than 1 mm/min., which comprises a toner containing a coloring agent covered with a resin and an aliphatic hydrocarbon dispersing medium dispersing said toner therein, wherein said coloring agent comprises a resinous composition containing an ethylene-vinylacetate copolymer as the essential component, which disperses therein a pigment coated with at least one of humic acid, humate and humic acid derivatives, and said toner comprises said coloring agent covered with a resinous composition containing a polymer prepared from a composition containing Monomer I of the following general formula, ##STR1## (wherein R represents hydrogen or methyl group and A represents --COOC.sub.n H.sub.2n+1 or --OCOC.sub.n H.sub.2n+1, n being an integer of 6 to 20) and Monomer II having an allyl group as the essential components.

Abstract: This invention relates to a non-aqueous type resinous composition obtained by polymerizing a polymerizable composition containing at least monomer A represented by the general formula (I), ##STR1## (wherein R represents --H or --CH.sub.3, X representing --COOC.sub.n H.sub.2n+1 or --O--CO--C.sub.n H.sub.2n+1, and n representing an integer of 6-20) and monomer B represented by the general formula (II), ##STR2## (wherein R represents --H or --CH.sub.3, n representing an integer of 1-20, and M representing --H, Na, K, Mg, Mn, Ca, Li, Al or Co) in the presence of a polymerization initiator in an aliphatic hydrocarbon solvent.

Abstract: A liquid developer for electrophotography is disclosed, which comprises a highly electrically insulating carrier liquid with a low dielectric constant and a colorant comprising a pigment component treated with a humic acid component selected from the group consisting of humic acid, a humic acid salt and a humic acid derivative, and then coated with a resin component, which colorant is dispersed in the highly electrically insulating carrier liquid.

Abstract: A liquid developer for use in electrophotography is disclosed which is prepared by dispersing a toner consisting essentially of a pigment or dye and a resin in a carrier liquid having a high insulating property and a low dielectric constant, wherein said resin is a nonaqueous dispersed resin obtained by effecting, in a nonaqueous solvent comprising an aliphatic hydrocarbon, the steps of:(a) copolymerizing (1) a monomer A having the general formula I: ##STR1## [wherein R is H or --CH.sub.3, and A is --COOC.sub.n H.sub.2n+1 or --OC.sub.n H.sub.

Abstract: A liquid developer for use in electrostatic photography is prepared by blending in a carrier liquid having a high electric resistivity and a low dielectric constant, (1) a resin dispersion composition A comprising a polymer obtained from at least one kind of resin which is difficult to dissolve or insoluble in said carrier liquid and at least one kind of monomer in which said resin is soluble and (2) a coloring agent having a high electric resistivity and consisting essentially of fine particles of pigment coated with a resin B which is different from said resin-dispersion composition A and is substantially insoluble in said carrier liquid. The liquid developer is superior in dispersion stability, polarity controlling property, adhesive property and storage stability and contributes to effecting development manifesting improved fixability as well as transferability.

Abstract: A liquid developer for use in electrophotography which is prepared by dispersing a pigment or dye and a resin in a carrier liquid comprising a nonaqueous solvent having a high insulating property and a low dielectric constant, wherein said resin comprises those obtained by grafting, upon a copolymer comprising a monomer having the general formula ##STR1## [wherein R is --H or --CH.sub.3 and X is a phenyl group, a methylphenyl group, --COOC.sub.n H.sub.2n+1 (1.ltoreq.n.ltoreq.20) or --COOC.sub.2 H.sub.4 N(C.sub.m H.sub.2m+1).sub.2 (1.ltoreq.m.ltoreq.5)], a monomer having a glycidyl group and a unsaturated carboxylic acid or its anhydride, in particular the unsaturated carboxylic acid or its anhydride when the copolymer has the glycidyl group as the constitution unit, and the monomer having a glycidyl group when the copolymer has the unsaturated carboxylic acid or its anhydride as the constitution unit.

Abstract: A liquid developer for use in electrophotography which is prepared by making a carrier liquid comprising a non-aqueous solvent having a highly insulating property and a low dielectric constant contain a coloring agent and a resin dispersed therein, characterized in that said resin contains the following components (A) and (B):(A) a polymer comprising at least one kind of resin having an acetone tolerance value of 100-5000 and at least one kind of monomer capable of dissolving said resin, and(B) a non-aqueous type thermoplastic resin obtained by esterifying a copolymer obtained from a monomer having the general formula I ##STR1## [wherein R is --H or --CH.sub.3 and X is --COOC.sub.n H.sub.2n+1 or --OC.sub.n H.sub.2n+1 (6.ltoreq.n.ltoreq.

Abstract: A liquid developer for use in electrophotography, which is superior in storage stability and transferability, said developer comprising a resin A and a coloring agent dispersed in a carrier liquid having a high electric resistivity and a low dielectric constant, said coloring agent having a high electric resistivity and consisting essentially of fine particles of pigment coated with a resin B which is different from said resin A and is substantially insoluble in said carrier liquid.

Abstract: A liquid developer for use in electrostatic photography which comprises at least one kind of resin which is substantially insoluble in a carrier liquid consisting of a non-aqueous solvent with high insulating property and low dielectric constant, a polymer consisting essentially of at least one kind of monomer which can dissolve said resin and a coloring agent, each component being contained in said carrier liquid, is excellent in dispersion stability, fixability and redispersibility so that it is suitable for use in offset printing and various transfers as well.

Abstract: A non-aqueous resin dispersion is obtained by dissolving a resin, which is substantially insoluble in non-aqueous solvents, in at least one monomer which can dissolve said resin, subjecting the resulting solution to polymerization reaction in the presence or in the absence of non-aqueous solvent, and if necessary, adding a non-aqueous solvent to the reaction product. The non-aqueous resin dispersion is useful as a coating material or as a liquid developer for use in electrophotography.

Abstract: This invention provides a liquid developer for use in electrophotography which comprises a dispersion of toner particles in a carrier liquid having a high resistivity and a low dielectric constant and is superior in fixability, dispersion stability and redispersability, said toner particles consisting essentially of pigment or dye particles and a non-aqueous dispersion of thermoplastic resinous composition comprising a graft-copolymer and at least one substance selected from wax the groups consisting of polyethylene.

Abstract: Liquid electrostatic developer having pigment or dyestuff dispersed in a non-aqueous dispersion containing a graftcopolymer and at least one substance selected from the group consisting of polyethylene, polyethylene wax and paraffin wax in a liquid carrier having a high resistivity and a low dielectric constant.