A coating material processable by non-impact printing to form at least a part of a coating layer representing an image, the coating material having an amorphous resin portion, is curable and is configured for being applied with a thickness of at least 15 μm, the coating material having one or more of the following: a polyester resin having at least one incorporated acid monomer and wherein at least 10 weight percent of the at least one incorporated acid monomer is isophthalic acid; a polyester resin containing 1 to 100 w-% of cycloaliphatic glycol compounds with respect to the total weight of the glycol compounds of the polyester resin component; an acrylic resin; a fluorine containing polymer; a polyurethane resin.

Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP.sub.12, SP.sub.22 and SP.sub.C2, respectively, the formulae 0.60≤(SP.sub.22−SP.sub.12)≤15.00 and SP.sub.12<SP.sub.C2<(SP.sub.22+3.00) are satisfied.

A toner comprising a toner particle containing a binder resin, the storage elastic modulus Gt′ (150) of the toner at 150° C. is at least 1.0×10.sup.4 Pa, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer, the first polymerizable monomer is selected from specific (meth)acrylic acid esters, the contents of the first monomer unit and second monomer unit in the polymer A are within specific ranges, and the SP values of the first monomer unit and second monomer unit are within specific ranges.

The present invention relates to a binder resin composition capable of giving a toner remarkably excellent in fusing property on polypropylene films, and to a toner for developing electrostatic images that contains the binder resin composition. [1] A binder resin composition for toners, containing an amorphous polyester resin which has a polyester resin-derived constituent moiety that is a constituent moiety derived from a polyester resin and a modified polypropylene polymer A-derived constituent moiety that is a constituent moiety derived from a modified polypropylene polymer A having a carboxylic acid group or a carboxylic anhydride group and in which the polyester resin-derived constituent moiety and the modified polypropylene polymer A-derived constituent moiety bond to each other via a covalent bond, wherein the polymer A is a polypropylene polymer terminally-modified with an unsaturated bond-having carboxylic acid compound or an anhydride thereof, and in the polyester resin, the amount of the polymer A-derived constituent unit is 8 parts by mass or more and 30 parts by mass or less relative to 100 parts by mass of the total of the alcohol component and the carboxylic acid component constituting the polyester resin-derived constituent moiety; and [2] a toner for developing electrostatic images, containing the binder resin composition of [1].

Provided is a two-component developer has a toner including a toner particle including a binder resin, and a magnetic carrier, wherein the binder resin includes a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer, the first polymerizable monomer is a specific (meth)acrylic acid ester, a content and an SP value of the first and second monomer units in the polymer A fall within respective specific ranges, the magnetic carrier has a magnetic core and a coating resin of the surface of the magnetic core, the coating resin includes a polymer B having monomer units (a) and (b), each SP value of the monomer units (a) and (b) is a specific value.

A developer comprises: at least one carrier; and, in an amount of 10 wt-% or less, a coating material (237), in particular for generating a coating layer by non-impact printing, the coating material being provided in the form of particles and comprising: a curable resin preferably an at least partially thermal curable resin and even more in particular curable by a crosslinking agent able to react with functional groups of the resin, the resin comprising in particular an amorphous resin portion; wherein an average diameter of the particles is in a range between 1 m and 25 m; and wherein the particles have an average sphericity larger than 0.7, in particular larger than 0.8, in particular a sphericity larger than 0.9; wherein, if the coating material is heated from room temperature with a heating rate of 5 K per minute, the coating material upon heating reduces its viscosity down to a minimum viscosity and increases its viscosity upon further increase of the temperature; wherein the minimum viscosity is in a range between 3 Pascal seconds and 20000 Pascal seconds.

A non-impact printing device (301) comprising: a coating material (237) being curable and comprising a resin; the coating material comprising an amorphous resin portion in an amount of at least 30 w-% based on the overall amount of resin and comprising with respect to the entire amount of coating material less than 0.5 w-% of flow additive; a printing unit, in particular an electrophotographic printing unit, being configured for printing the coating material (237) so as to form a coating layer, wherein the coating layer forms at least part of a layer package comprising at least one layer; the non-impact printing device being configured for providing the layer package so as to define a surface structure with the layer package; wherein the surface structure is defined by a thickness variation of the layer package; wherein the thickness variation is in a range between 1 m and 1000 m, in particular in a range between 1 and 300 m, and is in particular more than 1 m, in particular more than 5 m, in particular more than 10 m and in particular more than 20 m.

Coating material (237) for generating a coating layer by non-impact printing wherein the coating layer represents an image and wherein a resolution of the image is at least 100 DPI, the coating material comprising a curable resin; wherein the coating material (237) exhibits a minimum viscosity when being heated from room temperature with a heating rate of 5 Kelvin per minute up to a temperature where curing of the coating material occurs, wherein the minimum viscosity is in a range between 3 Pascal seconds to 20000 Pascal seconds, in particular in a range between 50 Pascal seconds and 10000 Pascal seconds and further in particular in a range between 250 Pascal seconds and 7000 Pascal seconds; and wherein a pill flow length is below 350 mm at a potential curing temperature which may be used to cure the coating material.

A toner having an inorganic fine particle and a toner particle containing a binder resin, wherein the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer, the first polymerizable monomer is selected from the (meth)acrylic acid esters each having a C.sub.18-36 alkyl group, the content of the first monomer unit in the polymer A is within a specific range, the SP value of the first monomer unit and the SP value of the second monomer unit are in a specific relationship to one another, the inorganic fine particle is surface treated with a compound having an alkyl group, and the volume resistivity of the inorganic fine particle is within a specific range.

A toner has a toner particle that has a binder resin and a release agent, wherein when the temperature when G=1.010.sup.5 Pa in a dynamic viscoelastic measurement on the toner is denoted by Ta, and the glass transition temperature in a differential scanning calorimetric measurement on the toner is denoted by Tg, the Ta and the Tg satisfy the following formulas:
40 C.Tg70 C.,
60 C.Ta90 C., and
0 C.TaTg35 C.; and the toner has a storage elastic modulus G having a minimum value in the range from 110 C. to 150 C. in a dynamic viscoelastic measurement on the toner.