A magnetic toner includes toner particles. The toner particles each include a toner mother particle. The toner mother particle includes a polyester resin domain, a vinyl resin domain, and a magnetic powder. A vinyl resin constituting the vinyl resin domain includes a repeating unit having a non-ring-opened oxazoline group. An area rate of an area in which the vinyl resin domain is exposed in a surface area of the toner mother particle is at least 0.02% and no greater than 1.00%.

A photoresponsive polymer includes a structural unit represented by the following general formula (1), the photoresponsive polymer being fluidized by light irradiation, and reversibly non-fluidized:
[Chemical formula 1]
R.sub.1Z.sub.1?Z.sub.2R.sub.2General formula (1) in the formula, Z.sub.1 and Z.sub.2 each represent CH or N, and Z.sub.1?Z.sub.2, R.sub.1 represents an aromatic hydrocarbon group having a substituent R.sub.a selected from the group consisting of an alkyl group, an alkoxy group, and a halogen atom at each of two ortho positions with respect to Z.sub.1, R.sub.2 represents an aromatic heterocyclic group with or without a substituent, and at least one of the R.sub.1 and the R.sub.2 is bonded to a group containing a structure derived from a polymerizable group.

A support material toner particle for use in xerographic additive manufacturing includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the T.sub.g of the PVA polymer to be within about 1 C. to about 20 C. of a desired build material toner T.sub.g. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the T.sub.g of the PVA polymer to be within about 1 C. to about 20 C. of the build material toner T.sub.g. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.

A toner consists essentially of food-grade components. Because the toner consists essentially of food-grade components, it can be used to provide a coating or create an image on food products, including those intended for human or animal consumption.

A binder resin for toner includes a carboxy group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E), a reactant thereof, and a fatty acid metal salt (M), in which the carboxy group-containing vinyl resin (C) includes a high molecular weight vinyl resin (H) having a peak in a region in which the molecular weight is equal to or more than 2.510.sup.4 and equal to or less than 1.210.sup.6 in the molecular weight distribution of a THF soluble content and a low molecular weight vinyl resin (L) having a peak in a region in which the molecular weight is equal to or more than 210.sup.3 and equal to or less than 210.sup.4 in the molecular weight distribution of a THF soluble content. The reactant of the carboxy group-containing vinyl resin (C) and the glycidyl group-containing vinyl resin (E) is formed in the presence of the fatty acid metal salt (M).

A toner having a toner particle including a binder resin and a release agent is provided, wherein the binder resin includes a crystalline resin and an amorphous resin, where in differential scanning calorimetry of the toner, a temperature is raised to obtain a differential scanning calorimetry curve A and then the temperature is lowered to obtain a differential scanning calorimetry curve B, the differential scanning calorimetry curve A has endothermic peaks derived from the crystalline resin and the release agent, the differential scanning calorimetry curve B has exothermic peaks derived from the crystalline resin and the release agent, and these endothermic peaks and exothermic peaks satisfy specific relationships, and a storage elastic modulus G(TmB) of the toner at the endothermic peak temperature of the crystalline resin is 1.010.sup.5 Pa to 1.010.sup.8 Pa.

Latexes are provided which may comprise water and resin particles comprising a polymerization product of reactants comprising a dioxane/dioxolane monomer and a vinyl co-monomer, wherein the dioxane/dioxolane monomer is an ester of (meth)acrylic acid with an alcohol comprising a dioxane moiety, an ester of (meth)acrylic acid with an alcohol comprising a dioxolane moiety, or both.