Abstract: A toner contains toner particles. The toner particles are made of a resin containing an amorphous polyester resin, a releasing agent, an additive and a coloring agent. The additive has a polyester portion and a crystalline acrylic portion that are chemically bound to each other.

Abstract: Provided is a toner, including: a toner particle; and an organic-inorganic composite fine particle on a surface of the toner particle, in which the organic-inorganic composite fine particle includes: a resin fine particle; and an inorganic fine particle embedded in the resin fine particle, and part of which is exposed to a surface of the composite fine particle, and in which the composite fine particle satisfies the following relationships: (i) in viscoelasticity measurement of the composite fine particle, when the loss elastic modulus thereof at a temperature T (° C.) is represented by G?T [dN/m2], a change ratio d(Log(G?T))/dT of a common logarithm of the loss elastic modulus has a minimum in a temperature range of from 60° C. to 150° C., and the minimum is less than ?0.10; and (ii) the loss elastic modulus (G?180) thereof at a temperature of 180° C. is 1.0×104 dN/m2 or more and 1.0×107 dN/m2 or less.

Abstract: Provided are a process cartridge and an image-forming method each of which has a satisfactory cleaning property even at the initial stage of the use of a brand-new process cartridge or electrophotographic apparatus, and hence can suppress a reduction in image quality due to the contamination of a charging member. The charge transporting layer of an electrophotographic photosensitive member contains a specific polyarylate resin or polycarbonate resin, and a toner contains a specific fine particle on the surface of a toner particle.

Abstract: Provided is a toner has toner particle containing a crystalline polyester resin A, an amorphous resin B and a colorant, wherein (1) the crystalline polyester resin A is a resin that has a crystal nucleating agent segment (D) on the end of a polyester molecular chain (C), (2) the amorphous resin (B) is a hybrid resin in which a polyester unit (E) and a vinyl polymer unit (F) are chemically bonded, and (3) the SP value of the polyester molecular chain (C) (Sc), the SP value of the crystal nucleating agent segment (D) (Sd), the SP value of the polyester unit (E) (Se) and the SP value of the vinyl polymer unit (F) (Sf) satisfy specific relationships.

Abstract: Provided is a toner having excellent long-term storage stability and exhibiting both low-temperature fixability and uniform gloss in high-speed printing. A toner has a toner particle that contains a crystalline polyester resin A, an amorphous polyester resin B and a colorant, wherein the crystalline polyester resin A has a polyester molecular chain having a nucleating agent segment at the terminal end thereof, and an SP value Sa ((cal/cm3)1/2) of the crystalline polyester resin A ranges from 9.00 to 11.50, and the amorphous polyester resin B has a specific functional group.

Abstract: The toner includes toner particles containing a polyester resin A, a polyester resin B and a colorant, the polyester resin A has a polyester portion including a segment capable of forming a crystal structure and a crystal nucleating agent segment, which is bonded to an end of the polyester portion, and the polyester resin B is a resin which is free of any segments capable of forming a crystal structure, the polyester resin B has a weight average molecular weight Mwb by GPC of a THF soluble matter of 3000 or more and 100000 or less, and an SP value Sa ((cal/cm3)1/2) of the polyester portion of the polyester resin A and an SP value Sb ((cal/cm3)1/2) of the polyester resin B satisfy the following relationships: 9.00?Sa?10.50 ?0.40?Sb?Sa?0.80.

Abstract: The toner of the present invention includes toner particles containing polyester resins A and B and a colorant, the A has a polyester portion including a portion capable of forming a crystal structure and a crystal nucleating agent portion, which is bonded to an end of the polyester portion, the B is free from any portions capable of forming a crystal structure, in a chart obtained as a result of GPC of a THF-soluble matter of the B, a ratio of a component having a molecular weight of 1500 or less in the B is 5.0 to 15.0% by area, and when an SP value of the polyester portion of the A is represented by Sa ((cal/cm3)1/2) and an SP value of the B is represented by Sb ((cal/cm3)1/2), the SP values Sa and Sb satisfy the following relationships: 9.50?Sa?11.00 ?0.65?Sb?Sa?0.70.

Abstract: To provide a toner that can keep its melt-sticking to sleeve from occurring and, even in double-sided printing, can keep high-temperature offset from occurring and obtain high-quality images on both the surface and the back. The toner comprises toner particles each of which contains a binder resin containing a resin formed by the reaction of i) a resin (A) having a softening point TA (° C.) of 70° C. to 105° C. and having a peak top of endothermic peaks at 55° C. to 120° C. with ii) a resin (B) having a softening point TB (° C.) of 120° C. to 160° C. and having a peak top of endothermic peaks at 55° C. to 120° C., and, in its viscoelasticity characteristics, has a storage elastic modulus at temperature 180° C. (G?180) of 3.0×103 Pa to 3.0×104 Pa, where the loss tangent tan ? has at least one peak having a peak top within the range of 50° C. to 70° C. and, when peak top temperature of the peak is represented by T(° C.), the loss tangent at T+10(° C.) [tan ?(T+10)] is 1.0 to 1.

Abstract: Provided is a toner exhibiting satisfactory fixability even in high-speed fixing process involving a double-sided printing mechanism, keeping stable toner image even after a conveyance step, and doesn't cause curling to a fixing roller even in thin paper. In a toner including toner particles, each of which contains polyester resins A and B, a coloring agent, and a resin composition C, the resin A includes a crystal nucleating agent bonded to a polyester molecular chain including a moiety capable of forming a crystalline structure. The resin B doesn't include a moiety capable of forming a crystalline structure. The composition C is obtained by copolymerizing a vinyl-based resin component with a polyolefin resin component. SP values the resin A, the resin B, the agent, the polyolefin component, and the vinyl-based component satisfy the particular relationships.

Abstract: A toner is provided which is superior in the long-term storage stability and has high low-temperature fixing properties. In a DSC curve as measured with a differential scanning calorimeter, the toner has a glass transition temperature of not less than 50° C. and not more than 60° C.; and the toner has, in regard to a resin composition contained therein, a difference of not less than 0.060 W/g in heat flow between a point on the curve at a temperature of 40° C. and a baseline in the range exceeding the glass transition temperature; and in viscoelastic characteristics measured at a frequency of 6.28 rad/sec, the toner has a storage elastic modulus (G?40) at a temperature of 40° C. of not less than 7.0×108 Pa and not more than 2.0×109 Pa, and a storage elastic modulus (G?70) at a temperature of 70° C. of not less than 1.0×105 Pa and not more than 1.0×107 Pa.

Abstract: A toner contains toner particles. The toner particles are made of a resin containing an amorphous polyester resin, a releasing agent, an additive and a coloring agent. The additive has a polyester portion and a crystalline acrylic portion that are chemically bound to each other.

Abstract: A toner manufacturing method includes a first mixing process of mixing toner base particles, each of which contains a colorant, a crystalline resin, an amorphous resin, and wax with inorganic fine particles to obtain a mixture and a second mixing process of further mixing the mixture, in which, in both the mixing processes, a stirring unit for imparting mechanical impact force is used and the processing is performed at a specific processing temperature (° C.) with a specific stirring power (W/kg).

Abstract: Provided is a toner satisfying low-temperature fixing performance and long-term storage stability of fixed images. Further, provided is a toner capable of obtaining toner images excellent in long-term storage stability irrespective of use environments even in the case where images are formed by a high-speed fixing system having low internal pressure of a fixing nip of a fixing device and a high printing speed. The toner includes toner particles containing a binder resin having a resin A and B, and a coloring agent, in which the resin A includes a resin including a moiety capable of forming a crystalline structure; the resin B includes a resin free of a moiety capable of forming a crystalline structure; and ?Hhigh and ?Hlow satisfy the expressions: 2??Hhigh?45 3[%]?{(?Hlow??Hhigh)/?Hlow}×100?70[%] where ?Hhigh and ?Hlow represent a heat of melting derived from the binder resin measured at a temperature increase speed of 100° C./min and 10° C./min, respectively.

Abstract: Provided is a toner having excellent long-term storage stability and exhibiting both low-temperature fixability and uniform gloss in high-speed printing. A toner has a toner particle that contains a crystalline polyester resin A, an amorphous polyester resin B and a colorant, wherein the crystalline polyester resin A has a polyester molecular chain having a nucleating agent segment at the terminal end thereof, and an SP value Sa ((cal/cm3)1/2) of the crystalline polyester resin A ranges from 9.00 to 11.50, and the amorphous polyester resin B has a specific functional group.

Abstract: Provided is a toner has toner particle containing a crystalline polyester resin A, an amorphous resin B and a colorant, wherein (1) the crystalline polyester resin A is a resin that has a crystal nucleating agent segment (D) on the end of a polyester molecular chain (C), (2) the amorphous resin (B) is a hybrid resin in which a polyester unit (E) and a vinyl polymer unit (F) are chemically bonded, and (3) the SP value of the polyester molecular chain (C) (Sc), the SP value of the crystal nucleating agent segment (D) (Sd), the SP value of the polyester unit (E) (Se) and the SP value of the vinyl polymer unit (F) (Sf) satisfy specific relationships.

Abstract: Provided is a toner satisfying low-temperature fixing performance and long-term storage stability of fixed images. Further, provided is a toner capable of obtaining toner images excellent in long-term storage stability irrespective of use environments even in the case where images are formed by a high-speed fixing system having low internal pressure of a fixing nip of a fixing device and a high printing speed. The toner includes toner particles containing a binder resin having a resin A and B, and a coloring agent, in which the resin A includes a resin including a moiety capable of forming a crystalline structure; the resin B includes a resin free of a moiety capable of forming a crystalline structure; and ?Hhigh and ?Hlow satisfy the expressions: 2??Hhigh?45 3[%]?{(?Hlow??Hhigh)/?Hlow}×100?70[%] where ?Hhigh and ?Hlow represent a heat of melting derived from the binder resin measured at a temperature increase speed of 100° C./min and 10° C./min, respectively.

Abstract: The toner includes toner particles containing a polyester resin A, a polyester resin B and a colorant, the polyester resin A has a polyester portion including a segment capable of forming a crystal structure and a crystal nucleating agent segment, which is bonded to an end of the polyester portion, and the polyester resin B is a resin which is free of any segments capable of forming a crystal structure, the polyester resin B has a weight average molecular weight Mwb by GPC of a THF soluble matter of 3000 or more and 100000 or less, and an SP value Sa ((cal/cm3)1/2) of the polyester portion of the polyester resin A and an SP value Sb ((cal/cm3)1/2) of the polyester resin B satisfy the following relationships: 9.00?Sa?10.50 ?0.40?Sb?Sa?0.80.

Abstract: The toner of the present invention includes toner particles containing polyester resins A and B and a colorant, the A has a polyester portion including a portion capable of forming a crystal structure and a crystal nucleating agent portion, which is bonded to an end of the polyester portion, the B is free from any portions capable of forming a crystal structure, in a chart obtained as a result of GPC of a THF-soluble matter of the B, a ratio of a component having a molecular weight of 1500 or less in the B is 5.0 to 15.0% by area, and when an SP value of the polyester portion of the A is represented by Sa ((cal/cm3)1/2) and an SP value of the B is represented by Sb ((cal/cm3)1/2), the SP values Sa and Sb satisfy the following relationships: 9.50?Sa?11.00 ?0.65?Sb?Sa?0.70.

Abstract: Provided is a toner exhibiting satisfactory fixability even in high-speed fixing process involving a double-sided printing mechanism, keeping stable toner image even after a conveyance step, and doesn't cause curling to a fixing roller even in thin paper. In a toner including toner particles, each of which contains polyester resins A and B, a coloring agent, and a resin composition C, the resin A includes a crystal nucleating agent bonded to a polyester molecular chain including a moiety capable of forming a crystalline structure. The resin B doesn't include a moiety capable of forming a crystalline structure. The composition C is obtained by copolymerizing a vinyl-based resin component with a polyolefin resin component. SP values the resin A, the resin B, the agent, the polyolefin component, and the vinyl-based component satisfy the particular relationships.

Abstract: A toner having toner particles, each of which contains a binder resin and a colorant, wherein in viscoelastic properties of the toner as measured with a rotating flat plate rheometer at a frequency of 6.28 rad/sec: a storage elastic modulus at the temperature of 60° C. (G?60) is in a range from 1.0×107 to 1.0×109 (Pa), and a maximal value (G?p) exists for the storage elastic modulus in a temperature range from 110° C. to 140° C., with this G?p being in a range from 5.0×104 to 5.0×106 (Pa).