A toner including a toner particle comprising a binder resin and a crystalline polyester, wherein the binder resin contains a polyester having a structure represented by the following formula (1): ##STR00001##
in formula (1), Rs each independently represent hydrogen, a methyl group, or a phenyl group;
A represents a polyester segment;
B represents a polyester segment or any functional group selected from the group consisting of —R.sup.1OH, —R.sup.1COOH, ##STR00002##
and —R.sup.1NH.sub.2 wherein R.sup.1 represents a single bond or a C.sub.1-4 alkylene group; and
the average repeat number n is 10 to 80.

A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.40 to 1.20 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.

An electrostatic image developing toner includes toner particles, an external additive A, and an external additive B. At least the external additive A is deposited on the surfaces of the toner particles. At least the external additive B is deposited on the external additive A. The external additive B includes an aggregate of two or more particles. The coverage of the toner particles with the external additive B is 3% by area or more with respect to the total surface area of the toner particles.

The present disclosure provides processes for producing images with toner particles. In embodiments, toner particles of a certain diameter in size are applied to a substrate as an incomplete monolayer, and then fused to form an image that is a complete monolayer and possesses a thickness less than the diameter of the particles utilized to form the image.

A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and external additives including particles of at least one compound represented by formula (1) and particles of a metal salt of a fatty acid,
MTiO.sub.3  (1)
where M represents at least one selected from the group consisting of Ca, Sr, and Ba.

The present invention relates to a toner for development of electrostatic images which contains a colorant, a resin composition (P) and a resin composition (W), in which the resin composition (P) is a resin composition formed by subjecting an acid group-containing amorphous polyester-based resin (A) and an amine compound to condensation reaction, and the resin composition (W) is a resin composition formed by subjecting an alcohol component (W-al), a carboxylic acid component (W-ac) and a hydrocarbon wax containing at least one functional group selected from the group consisting of a hydroxy group and a carboxy group to condensation reaction; and a process for producing the toner.

Provided is a toner comprising: a toner particle containing a binder resin; and an organic silicon polymer particle on a surface of the toner particle, wherein the binder resin contains a crystalline resin, and when the toner particle is pelletized and a Young's modulus of the toner measured in a micro compression test at 25° C. is represented by TE (MPa) and when one organic silicon polymer particle is separated from the toner and a Young's modulus of the one organic silicon polymer particle measured in a micro compression test at 25° C. is represented by SiE (MPa), TE and SiE satisfies 800≤TE≤2500 and 1.5≤SiE/TE≤10.0.

A toner, comprising a toner particle, wherein the toner particle has a core-shell structure comprising a core particle and a shell on a surface of the core particle, the shell comprises a polymer having monomer units represented by Formula (I) below, the toner comprises a specific external additive A, the external additive A is at least one selected from the group consisting of silica fine particles and organosilicon polymer fine particles, and a ratio of coverage of a surface of the toner particle with the external additive A is 0.3 area % or higher:

##STR00001## in Formula (I), L.sup.1 represents —COO(CH.sub.2).sub.n— (where n is an integer of 1 to 10), and carbonyl of L.sup.1 is bonded to a carbon atom of a main chain; R.sup.1 represents hydrogen or a methyl group; and R.sup.2 to R.sup.10 represent each independently an alkyl group having 1 to 4 carbon atoms.

An electrophotographic apparatus forms an image by forming an electrostatic latent image on the surface of an electrophotographic photoconductor and transferring a toner developed in the electrostatic latent image to a transfer material, where the photoconductor includes an outermost layer containing a silica filler, where the toner includes a toner base particle and an external additive as components, where the toner base particles at least contains a binder resin, a colorant, and a mold lubricant, and where the external additive represents externally-added silica and externally-added fine powder, the externally-added fine powder having the surface of a core hydrophobized with a silane compound, the core being derived by addition of silica to strontium titanate.

A toner is provided. The toner comprises a maleic-acid-modified polyolefin having a polypropylene block in a main chain and having a weight average molecular weight of 60,000 or more.