摘要:
A magnetic toner is provided having at last a binder resin and a magnetic material and having a weight-average particle diameter of 3 μm to 10 μm. The magnetic material has been surface-treated with a low-softening substance (A), and has a compressibility of 35 or more which can be calculated according to a specific expression. The softening point of the magnetic toner is from 40° C. to 85° C. in measurement by a flow tester. The magnetic toner has a resin component containing 1% to 60% by weight of a tetrahydrofuran-insoluble matter. This magnetic toner is superior in low-temperature fixing performance and has good fixing performance in a broad fixing range.
摘要:
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.
摘要:
The method of producing polymerized toner, the method including: dispersing a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium; and polymerizing the polymerizable monomer in the aqueous medium with a polymerization initiator to produce toner particles, and is characterized in that a polymerization initiator which has a specific structure and the hydrogen bond dissociation energies of which satisfy specific relationships is used as the polymerization initiator.
摘要:
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
摘要:
Provided are a novel polymer having a sulfonic group, a sulfonic acid ester group, or a derivative thereof incorporated therein, a method of producing the polymer, and a novel compound suitable for producing the polymer. A polymer is characterized by containing a unit represented by the following formula (1): wherein R1w and R1x are each independently a halogen atom or a hydrogen atom, R1y is a CH3 group or a hydrogen atom, and any one of R1a, R1b, and R1c is a sulfonate group represented by SO3R1f.
摘要:
Provided are a novel polymer having a sulfonic group, a sulfonic acid ester group, or a derivative thereof incorporated therein, a method of producing the polymer, and a novel compound suitable for producing the polymer. A polymer is characterized by containing a unit represented by the following formula (1): wherein R1w and R1x are each independently a halogen atom or a hydrogen atom, R1y is a CH3 group or a hydrogen atom, and any one of R1a, R1b, and R1c is a sulfonate group represented by SO3R1f.
摘要:
There is provided a polymer including a unit represented by Chemical Formula (1): wherein R represents -A1-SO2R1; R1w and R1X are each independently a halogen atom or a hydrogen atom; R1y is a CH3 group, a halogen atom or a hydrogen atom; A01 is a substituted or unsubstituted aromatic ring structure or a substituted or unsubstituted heterocyclic structure; A1 is a substituted or unsubstituted aliphatic hydrocarbon structure, a substituted or unsubstituted aromatic ring structure or a substituted or unsubstituted heterocyclic structure; R1 is OH, a halogen atom, ONa, OK or OR1a; R1a is a substituted or unsubstituted aliphatic hydrocarbon structure, a substituted or unsubstituted aromatic ring structure or a substituted or unsubstituted heterocyclic structure.
摘要翻译:提供包含由化学式(1)表示的单元的聚合物:其中R表示-A1-SO2R1; R1w和R1X各自独立地为卤原子或氢原子; R1y是CH3基,卤素原子或氢原子; A01是取代或未取代的芳环结构或取代或未取代的杂环结构; A1是取代或未取代的脂族烃结构,取代或未取代的芳环结构或取代或未取代的杂环结构; R1是OH,卤素原子,ONa,OK或OR1a; R 1a是取代或未取代的脂族烃结构,取代或未取代的芳环结构或取代或未取代的杂环结构。
摘要:
The method of producing polymerized toner, the method including: dispersing a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium; and polymerizing the polymerizable monomer in the aqueous medium with a polymerization initiator to produce toner particles, and is characterized in that a polymerization initiator which has a specific structure and the hydrogen bond dissociation energies of which satisfy specific relationships is used as the polymerization initiator.
摘要:
A magnetic toner is provided having at last a binder resin and a magnetic material and having a weight-average particle diameter of 3 μm to 10 μm. The magnetic material has been surface-treated with a low-softening substance (A), and has a compressibility of 35 or more which can be calculated according to a specific expression. The softening point of the magnetic toner is from 40° C. to 85° C. in measurement by a flow tester. The magnetic toner has a resin component containing 1% to 60% by weight of a tetrahydrofuran-insoluble matter. This magnetic toner is superior in low-temperature fixing performance and has good fixing performance in a broad fixing range.