Abstract: Provided is a toner that is excellent in terms of low-temperature fixability and hot offset resistance, has a wide fixing temperature range from a low-temperature region to a high-temperature region, and has high thermal storability. When the toner is measured with a capillary rheometer, t(1) is 60 seconds or more and t(5) is 30 seconds or less and the toner satisfies the following formulae (1) and (2) 65.0[° C.]?T(5)?90.0[° C.]??(1) 4.5?t(1)/t(5)?10.0??(2).

Abstract: A hinge portion connects between first and second casings. The second casing includes a thickness direction along a first axis direction. The hinge portion supports the first casing with respect to the second casing to be rotatable between a first state in which the hinge portion is opposed to the second casing and a second state in which the hinge portion is rotated around a second axis orthogonal to the first axis direction by a predetermined angle. A connection module is provided in the second casing and is electrically connectable to an external apparatus in the second state. A conversion mechanism is provided between the first and second casings and converts a thickness of the connection module along the first axis direction from a first thickness into a second, larger thickness in conjunction with rotation of the first casing from the first state to the second state.

Abstract: The present invention provides a toner excellent in low-temperature fixability and also excellent in heat-resistant storage property, offset resistance, and durability. In a process for producing a toner containing toner particles by emulsion aggregation, each toner particle includes a binder resin of which a main component is a block polymer having a crystal structure, a colorant, and a release agent; the binder resin includes polyester as a main component; the rate of a portion capable of forming a crystal structure to the binder resin is 50 to 80 mass %; a peak temperature Tp of a maximum endothermic peak attributed to the binder resin is 50 to 80° C. in endothermic amount measurement of the toner with a differential scanning calorimeter (DSC); and fused particles are heated at a heating temperature t (° C.) satisfying Tp??15.0?t?Tp??5.0 for at least 0.5 hr.

Abstract: Toner characterized in that assuming that the glass transition point of the toner measured by a differential scanning calorimeter (DSC) is represented by T1(° C.), in a micro compression test at T1?10 (° C.), when a load from 0.00N (0.00 mgf) to 7.85×10?4 N (80.00 mgf) is applied at the intervals of 7.85×10?7 N (0.08 mgf) to a single particle of the toner, the strain value A80a(%) at 7.85×10?4 N is 35.0 to 75.0%; and in a load (x-axis)-strain (y-axis) curve obtained by the micro compression test, the ratio of an area (S1a) of a specific region, relative to an area (S2a) of a specific region, (S1a/S2a), is 1.5 to 3.5.

Abstract: A magenta toner characterized by satisfying, in DSC measurement, 40.0?Tg(0.5)?60.0 and 2.0?Tg(4.0)?Tg(0.5)?10.0, wherein when preparing a solution of which the magenta toner is dissolved in ethyl acetate, and defined the concentration of the thereof as Cm1 (mg/ml), and the light absorbance thereof at a wavelength of 538 nm as A(ethyl acetate)538, the ratio of A(ethyl acetate)538 to Cm1 satisfies the formula, A(ethyl acetate)538/Cm1<0.15, and, when preparing a solution of which the magenta toner is dissolved in chloroform, and defined the concentration of the thereof as Cm2 (mg/ml), and the light absorbance thereof at a wavelength of 538 nm as A(chloroform)538, the ratio of A(chloroform)538 to Cm2 satisfies the formula, 2.00<A(chloroform)538/Cm2<6.55.

Abstract: A yellow toner is provided which can form high-quality images and has high offset resistance and excellent charging performance while being a capsule-type toner having excellent low-temperature fixability. The yellow toner satisfies, in DSC measurement, 40.0?Tg(0.5)?60.0 and 2.0?Tg(4.0)?Tg(0.5)?10.0, wherein when the concentration of the yellow toner in an ethyl acetate dispersion is Cy1 (mg/ml) and the light absorbance at a wavelength of 422 nm of the dispersion is A(ethyl acetate)422, the relationship between Cy1 and A(ethyl acetate)422 satisfies A(ethyl acetate)422/Cy1<0.45, and when the concentration of the yellow toner in a chloroform solution is Cy2 (mg/ml) and the light absorbance at a wavelength of 422 nm of the solution is A(chloroform)422, the relationship between Cy2 and A(chloroform)422 satisfies 6.00<A(chloroform)422/Cy2<14.4.

Abstract: A black toner has a toner particle including at least a resin (a) having a polyester as a main component, carbon black, and a wax, and a fine inorganic particle. When the Tgs of the black toner measured by DSC at temperature rise rate of 0.5° C./min and 4.0° C./min are defined as Tg(0.5) and Tg(4.0) respectively, Tg(0.5) is 35.0 to 60.0° C. and the difference between Tg(4.0) and Tg(0.5) is 2.0 to 10.0° C. When preparing a solution of which the black toner is dissolved in ethyl acetate and defined the concentration thereof as Cb1 (mg/mL) and the light absorbance thereof at 600 nm wavelength as A600, A600/Cb1 is less than 0.15. When preparing a solution of which the black toner is dissolved in chloroform and defined the concentration thereof as Cb2 (mg/mL) and the light absorbance thereof at 600 nm wavelength as A600, A600/Cb2 is 2.00 to 6.55.

Abstract: In the measurement of an endothermic amount of a toner, (1) an endothermic peak temperature (Tp) derived from the binder resin is 50° C. or higher and 80° C. or lower; (2) a total endothermic amount (?H) derived from the binder resin is 30 [J/g] or more and 125 [J/g] or less based on mass of the binder resin; (3) when an endothermic amount derived from the binder resin from an initiation temperature of an endothermic process to Tp is represented by ?HTp [J/g], ?H and ?HTp satisfy formula (1) below; and (4) when an endothermic amount derived from the binder resin from the initiation temperature of an endothermic process to a temperature 3.0° C. lower than Tp is represented by ?HTp-3 [J/g], ?H and ?HTp-3 satisfy formula (2) below. 0.30??HTp/?H?0.50??(1) 0.00??HTp-3/?H?0.

Abstract: A resin for toner containing a resin component having both a polyester unit produced by polycondensation of a polyhydric alcohol component and a polycarboxylic acid component, and an aryl group having a sulfonic ester group as a substituent; and a toner that contains the resin for toner.

Abstract: A toner in which, in a loss tangent (tan ?) curve obtained by a dynamic viscoelasticity test, the tan ? shows a maximal value ?a in the temperature region of 28.0-60.0° C., which maximal value ?a is 0.50 or more, and shows a minimal value ?b in the temperature region of 45.0-85.0° C., which minimal value ?b is 0.60 or less, where the difference between the maximal value ?a and the minimal value ?b is 0.20 or more; and, where the temperature that affords the maximal value ?a is represented by Ta (° C.) and the temperature that affords the minimal value ?b is represented by Tb (° C.), the difference between the Ta and the Tb is 5.0-45.0° C.; and the toner having, in a storage elastic modulus (G?) curve obtained by the dynamic viscoelasticity test, a value G?a of a storage elastic modulus at the Ta, of 1.00×106-5.00×107 Pa.

Abstract: Toner characterized in that assuming that the glass transition point of the toner measured by a differential scanning calorimeter (DSC) is represented by T1(° C.), in a micro compression test at T1?10 (° C.), when a load from 0.00N (0.00 mgf) to 7.85×10?4 N (80.00 mgf) is applied at the intervals of 7.85×10?7 N (0.08 mgf) to a single particle of the toner, the strain value A80a(%) at 7.85×10?4 N is 35.0 to 75.0%; and in a load (x-axis)-strain (y-axis) curve obtained by the micro compression test, the ratio of an area (S1a) of a specific region, relative to an area (S2a) of a specific region, (S1a/S2a), is 1.5 to 3.5.

Abstract: A toner in which, in a loss tangent (tan ?) curve obtained by a dynamic viscoelasticity test, the tan ? shows a maximal value ?a in the temperature region of 28.0-60.0° C., which maximal value ?a is 0.50 or more, and shows a minimal value ?b in the temperature region of 45.0-85.0° C., which minimal value ?b is 0.60 or less, where the difference between the maximal value ?a and the minimal value ?b is 0.20 or more; and, where the temperature that affords the maximal value ?a is represented by Ta(° C.) and the temperature that affords the minimal value ?b is represented by Tb(° C.), the difference between the Ta and the Tb is 5.0-45.0° C.; and the toner having, in a storage elastic modulus (G?) curve obtained by the dynamic viscoelasticity test, a value G?a of a storage elastic modulus at the Ta, of 1.00×106-5.00×107 Pa.

Abstract: A resin for toner containing a resin component having both a polyester unit produced by polycondensation of a polyhydric alcohol component and a polycarboxylic acid component, and an aryl group having a sulfonic ester group as a substituent; and a toner that contains the resin for toner.

Abstract: The present invention provides a method for producing a toner that can suppress the production of the decomposition products derived from a polymerization initiator, and can suppress the remaining presence, in the toner particles, of the unreacted polymerizable monomer and decomposition product residues. On the basis of this method, the present invention provides a toner that is excellent in triboelectric charging stability and can yield stable images over a long term.

Abstract: A charge controlling agent is provided as a compound in which an amide group is introduced together with a sulfonic group or a derivative thereof. The charge controlling agent is characterized by including at least one compound represented by the chemical formula (2) in which an amide group is introduced together with at least one of a sulfonic group, a sulfonic acid ester, a sulfonic acid salt, and a sulfonic acid halide.

Abstract: In differential scanning calorimetry of a toner, regarding a binder resin in the toner, (i) the peak temperature T10 of a maximum endothermic peak (temperature raising rate 10.0° C./min; P10) is 50° C. to 80° C. and the half-width W10 is 2.0° C. to 3.5° C. and (ii) W1, W10, and W20 satisfy that W1/W10 is 0.20 to 1.00 and W20/W10 is 1.00 to 1.50, where the half-width of a maximum endothermic peak (temperature raising rate of 1.0° C./min; P1) is represented by W1 (° C.) and the half-width of a maximum endothermic peak (temperature raising rate of 20.0° C./min; P20) is represented by W20 (° C.).

Abstract: In a toner formed of toner particles which include a colorant, a wax, and a binder resin containing a crystalline resin (a) primarily composed of a polyester, the crystalline resin has an endothermic peak temperature (Tp) in a range of 50° C. to 80° C., and in a viscoelasticity measurement of the toner, G?(Tp?10) is in a range of 5.0×107 to 5.0×108 Pa, G?(Tp+10) is in a range of 5.0×105 to 5.0×106 Pa, and G?(Tp?20), G?(Tp?10), G?(Tp+10), and G?(Tp+30) satisfy specific relationships.