G03G9/09328

ELECTROSTATIC LATENT IMAGE DEVELOPING TONER

An electrostatic latent image developing toner includes toner particles each including a toner core (10) and a shell layer (20) covering a surface of the toner core (10). The shell layer (20) contains a hydrophilic thermosetting resin and a hydrophobic thermoplastic resin. The hydrophilic thermosetting resin is a resin having at least one functional group selected from the group consisting of oxazoline groups, carbodiimide groups, and isocyanate groups. The hydrophobic thermoplastic resin is exposed at surfaces of the toner particle.

TONER FORMULATION AND METHOD OF PREPARING THE SAME
20170357169 · 2017-12-14 ·

A chemically prepared toner composition made up of a toner particle with a core having a first polymer binder, a monomer free radical polymerization formed core shell styrene acrylic latex having a liquid gel core, a pigment, a wax, and a shell formed around the core including a second polymer binder and method to make the same is disclosed. An optional borax coupling agent can be placed between the outer surface of the core and the shell to assist in the binding of the polymer found in the shell onto the surface of the toner core containing the first polymer.

TONER FORMULATION AND METHOD OF PREPARING THE SAME
20170357170 · 2017-12-14 ·

A chemically prepared toner composition made up of a toner particle with a core having a first polymer binder, a monomer free radical polymerization formed core shell styrene acrylic latex having a liquid gel core, a pigment, a wax, and a shell formed around the core including a second polymer binder and method to make the same is disclosed. An optional borax coupling agent can be placed between the outer surface of the core and the shell to assist in the binding of the polymer found in the shell onto the surface of the toner core containing the first polymer.

GLITTERING TONER, TONER-STORING UNIT, DEVELOPER, DEVELOPER-STORING UNIT,IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD

A glittering toner includes: a flat metallic pigment having a surface coated with a resin; a polyester-styrene acrylic composite resin; and a polyester resin. When a solubility parameter of the polyester-styrene acrylic composite resin is represented by SP1 (cal/cm.sup.3).sup.1/2 and a solubility parameter of the polyester resin is represented by SP2 (cal/cm.sup.3).sup.1/2, the SP1 and the SP2 satisfy a relational expression (1): [SP2−SP1>0.3] and the SP1 satisfies a relational expression (2): [10<SP1].

Magnetic carrier, two-component developer, and method for producing magnetic carrier

A magnetic carrier including a magnetic carrier particle having a magnetic core particle and a coating layer of an organosilicon polymer on a surface of the magnetic core particle, wherein the organosilicon polymer has the structure given by formula (T3) below; in .sup.29Si-NMR measurement of the THF-insoluble matter of the organosilicon polymer, the ratio ST3 of the peak area for the structure given by formula (T3) to the total peak area for the organosilicon polymer is at least 0.05; and in the roughness curve measured on the magnetic carrier particle, the mean width (RSm) of the roughness curve elements of the magnetic carrier particle, and the ratio (σ/RSm) to this RSm of the standard deviation σ of the width of the region where one period of a protrusion and a recess occurs, are in prescribed ranges.
R—Si(O.sub.1/2).sub.3  (T3) R in the formula represents a prescribed substituent.

TONER FOR ELECTROPHOTOGRAPHIC PROCESSES AND ELECTROSTATIC PRINTING PROCESSES

Disclosed is a toner including toner particles each including a core portion that contains a binder resin, and a surface layer containing an organosilicon polymer, in which each of the toner particles contains a polyvalent metal element having a resistivity of 2.5×10.sup.−8 Ω.Math.m or more and 10.0×10.sup.−8 Ω.Math.m or less at 20° C., and when the toner particles are subjected to X-ray fluorescence analysis, a net intensity originating from the polyvalent metal element is 0.10 kcps or more and 30.00 kcps or less.

Decolorizable toner

Provided is a decolorizable toner including a binder resin and colorant particles which contain a color developable compound, a color developing agent, and a decolorizing agent, and have a capsule structure coated with an outer shell, wherein the binder resin is contained in an amount of 60 to 80% by mass with respect to the total amount of the toner components.

Method of producing toner

Provided is a method of producing a toner including the steps of: mixing a resin solution comprising a resin R, a colorant, and an organic solvent, a resin fine particle comprising a resin S containing an element α, and carbon dioxide to form a droplet having a surface covered with the resin fine particle; introducing carbon dioxide in a liquid state and pressurizing to extract the organic solvent in the droplet; and removing the extracted organic solvent together with the carbon dioxide to provide a toner particle. In the method of producing a toner, when the resin fine particle is treated with the carbon dioxide in a liquid state, a change in amount of the element α on the surface of the resin fine particle after the treatment as compared to the amount before the treatment falls within a specific range.

TONER, METHOD FOR MANUFACTURING THE TONER, TONER ACCOMMODATING UNIT, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD

A toner is provided. The toner comprises toner base particles, resin particles adhered to surfaces of the toner base particles, and an external additive adhered to the surfaces of the toner base particles. The toner base particles each comprising a binder resin, a colorant, and a wax. The toner has a storage elastic modulus G′ of 4.0×10.sup.5 or less at 70° C. An embedment degree of the external additive is from 15% to 40%, as the embedment degree is measured by stirring 10 g of the toner and 20 g of a carrier in a 50-mL vial at 67 Hz for 60 minutes using a rocking mill.

TONER

A toner having a toner particle containing a binder resin and a crystalline material, wherein when “a” is an endothermic quantity deriving from the crystalline material in a DSC of the toner and “b” is an endothermic quantity deriving from the crystalline material in a DSC of the toner that has been held for 10 hours in an environment with a temperature of 55° C. and a humidity of 8% RH, the “a” and “b” satisfy a relationship a/b≧0.85; in a dynamic viscoelastic measurement of a non-melt-molded pellet of the toner, the toner has a temperature range A for which G″≦1×10.sup.5 Pa and tan δ<1 are satisfied; and in a dynamic viscoelastic measurement of a melt-molded pellet of the toner, the toner has a temperature range B for which tan δ>1 is satisfied within the temperature range A.