摘要:
The object of the present invention is to provide a magnetic toner enabling an image with high image density and excellent image reproducibility to be obtained, which is excellent in fluidity, charging stability, and charging uniformity, even for long-term use, and also enabling an image whose fogging, ghost, and scattering are suppressed to be obtained. The magnetic toner has at least a binder resin and a magnetic material, where, the magnetic material is an magnetic iron oxide whose dielectric breakdown voltage of the magnetic material is 160 to 1600 V/cm, and the dielectric loss tangent (tan δ) of the magnetic toner at 100 kHz and 40° C. is 2.0×10−3 to 1.0×10−2.
摘要:
A toner includes toner particle containing at least a strontium titanate particle on the surface of the toner particle, and the toner is a water-washed toner from which strontium titanate particle desorbable by water washing are removed by water washing. The water-washed toner contains the strontium titanate particle having a number average particle diameter of primary particle (D1) of 10 nm or more and 150 nm or less, and when the distribution of an Sr element in the water-washed toner in the depth direction is determined, (i) the Sr element abundance on the outermost surface x satisfying 0.00
摘要:
A toner is provided in which low-temperature fixing properties and high-temperature offset resistance can be compatible, and the environmental stability of image density can also be obtained. A toner obtained by condensation polymerization of an alcohol component containing not less than 70 mol% of an aliphatic polyalcohol with a carboxylic acid component, and including a polyester resin having a concentration of an ester group of not less than 25% by mass and not more than 55% by mass, and a compound represented by the following formula [1] as a charge-controlling agent: (wherein A 1 , A 2 , and A 3 each independently represent H, a nitro group, or a halogen atom; B 1 represents H or an alkyl group; M represents an Fe atom, a Cr atom, or an Al atom; X + represents a H ion, an alkali metal ion, a NH 4 ion, an alkylammonium ion, or mixed ions thereof.)
摘要翻译:提供一种调色剂,其中低温定影性和高温偏移抵抗性可以相容,并且还可以获得图像浓度的环境稳定性。 将含有70摩尔%以上的脂肪族多元醇的醇成分与羧酸成分缩聚而得到的调色剂,其中,酯基的浓度为25质量%以上且不超过25质量%的聚酯树脂 (其中A 1,A 2和A 3各自独立地表示H,硝基或卤素原子; B 1表示H或烷基; M表示Fe原子,Cr原子或Al原子; X +表示H离子,碱金属离子,NH 4离子,烷基铵离子或它们的混合离子。)
摘要:
Hydrophobic inorganic fine particles are provided which: does not cause melt adhesion of toner to a photosensitive member and contamination of a contact charging member; imparts excellent flowability, charging performance and durability to toner even after the toner is stored in a high-temperature, high-humidity environment over a long time period; and does not cause dripping of toner and contamination with the toner. The hydrophobic inorganic fine particles are obtained by subjecting inorganic fine particles to surface treatment with silicone oil and then with a silane compound and/or a silazane compound, or by subjecting inorganic fine particles to surface treatment with a silane compound and/or a silazane compound in the presence of silicone oil, and further subjecting the inorganic fine particles thus surface-treated to surface treatment with silicone oil.
摘要:
The toner is resistant to the generation of toner clumping, exhibits a stable charging performance regardless of the use environment, and exhibits little fluctuation in charging performance even during continuous high-print-count printing. The toner contains binder resin-containing toner particles and silica fine particles S 1, wherein the weight-average particle diameter of the toner is 4.0-15.0 µm, both inclusive. Peaks originating with the silica fine particles S1 are observed in 29 Si-NMR measurement of the silica fine particles S 1, and, in the spectrum obtained by 29 Si CP/MAS NMR or 29 Si DD/MAS NMR, the peak area of a peak corresponding to the D1 unit structure in the silica fine particles S 1, the peak area of a peak corresponding to the D2 unit structure in the silica fine particles S 1, and the peak area of a peak corresponding to the Q unit structure in the silica fine particles S 1 satisfy a prescribed relationship.
摘要:
Provided is a toner that shows both developability and electrostatic offset resistance. The toner includes a charge controlling agent that is represented by the following formula (1), and that has peaks at 15.000°±0.150° and 20.100 °±0.150 ° in CuKα X-ray diffraction spectrum obtained in 2θ range of 10° or more to 40° or less where θ represents Bragg angle, one of the peaks being a peak having a maximum intensity and the other being a peak having a second maximum intensity.
摘要:
The object of the present invention is to provide a magnetic toner enabling an image with high image density and excellent image reproducibility to be obtained, which is excellent in fluidity, charging stability, and charging uniformity, even for long-term use, and also enabling an image whose fogging, ghost, and scattering are suppressed to be obtained. The magnetic toner has at least a binder resin and a magnetic material, where, the magnetic material is an magnetic iron oxide whose dielectric breakdown voltage of the magnetic material is 160 to 1600 V/cm, and the dielectric loss tangent (tanδ) of the magnetic toner at 100 kHz and 40°C is 2.0 x 10-3 to 1.0 x 10-2.
摘要:
The invention is to provide a toner excellent in fixing property, high-temperature offset resistance and blocking resistance, and having an excellent developing property. The invention provides a toner including at least a binder resin and a colorant, wherein: the binder resin contains a hybrid resin which contains a polyester-type resin unit by 50 mass% or more and in which a polyester-type resin component and a vinyl-type resin component are chemically bonded; the toner contains 3 to 50 mass% of a tetrahydrofuran-insoluble matter derived from the binder resin; the tetrahydrofuran-insoluble matter contains a hybrid resin; and a tetrahydrofuran-soluble matter, obtained by hydrolyzing the tetrahydrofuran-insoluble matter and separating by filtration, has, in a GPC-measured molecular weight distribution, a main peak within a molecular weight range of 50,000 to 500,000.