摘要:
A toner, wherein the toner is obtained by washing a toner particle dispersion liquid which is obtained by adding cellulase to a dispersion slurry, and the dispersion slurry is obtained from a dispersion liquid or an emulsion of a toner material-containing oil phase in an aqueous medium, and wherein the dispersion liquid or the emulsion contains a cellulosic dispersion stabilizing agent.
摘要:
A toner, wherein the toner is obtained by washing a toner particle dispersion liquid which is obtained by adding cellulase to a dispersion slurry, and the dispersion slurry is obtained from a dispersion liquid or an emulsion of a toner material-containing oil phase in an aqueous medium, and wherein the dispersion liquid or the emulsion contains a cellulosic dispersion stabilizing agent.
摘要:
A black toner for developing a latent electrostatic image, including: a toner base containing a pigment, a binder resin, a releasing agent, a compound containing fluorine and a compound containing sulfur; and an external additive, wherein the toner contains the external additive on a surface of the toner base, and wherein an amount of the fluorine in the toner base is 200 ppm by mass to 600 ppm by mass as measured by combustion-ion chromatography, and an amount of the sulfur in the toner base is 1,000 ppm by mass to 1,500 ppm by mass as measured by the combustion-ion chromatography.
摘要:
A toner is provided. The toner comprises a binder resin, a metal-containing azo dye, and a quaternary ammonium salt, has an average circularity of from 0.85 to 0.95, and is free of a tin compound having Sn—C bond.
摘要:
An electrostatic image developing toner including: a binder resin; a colorant; and a wax, wherein the intensity ratio of an absorbance at 2,850 cm−1 derived from the wax to an absorbance at 828 cm−1 derived from the binder resin, represented by “absorbance derived from the wax/absorbance derived from the binder resin”, is in the range of 0.1 to 0.5, where the absorbances are measured by FTIR-ATR, and the intensity ratio serves as a value for determining the amount of the wax present within 0.3 μm in depth from surfaces of particles of the toner after the toner has been heated to 140° C. and then cooled, and wherein the toner has a storage elastic modulus of 5,000 Pa or greater at 140° C.
摘要:
To provide an image forming apparatus including: a latent electrostatic image bearing member; a charging unit configured to charge the surface of the latent electrostatic image bearing member; an exposing unit configured to expose the charged surface of the latent electrostatic image to form a latent electrostatic image thereon; a developing unit configured to develop the latent electrostatic image with a toner to form a visualized image; a transferring unit configured to transfer the visualized image onto a recording medium; and a fixing unit configured to fix the visualized image transferred onto the recording medium, wherein the toner includes a binder resin and a coloring agent, and the binder resin includes a polyester resin obtained by condensation polymerization of an alcohol component and a carboxylic acid component containing a (meth)acrylic acid modified rosin.
摘要:
An image forming apparatus including a fixing device to fix a toner image on a recording medium including a heat roller and an oil applicator to apply a silicone oil to the heat roller, having a system speed of from 500 to 1700 mm/sec, and using a toner including a binder resin including a crystalline polyester resin and an amorphous polyester resin; a fatty acid amide compound; and a colorant, wherein a ratio (W/R) of a height (W) of a peak at a wavenumber of 1638 cm−1, specific to the fatty acid amide compound, to a height (R) of a peak at a wavenumber of 829 cm−1, specific to the amorphous polyester resin, is from 0.010 to 0.040 in an absorption spectrum obtained by an ATR method (total reflectance method) using a Fourier transform infrared (FT-IR) spectrophotometer.
摘要:
A toner which includes a toner material, wherein the toner satisfies the following formula: 0° C.≦ΔTm≦20° C. where ΔTm represents Tma (° C.)−Tmb (° C.), Tma (° C.) is ½ flown-out temperature of the toner by a capillary type flow tester, and Tmb (° C.) is ½ flown-out temperature of a melt kneaded mixture of the toner by the capillary type flow tester, and wherein Tma is from 130° C. to 200° C.
摘要:
A toner which includes a toner material, wherein the toner satisfies the following formula: 0° C.≦ΔTm≦20° C. where ΔTm represents Tma (° C.)−Tmb (° C.), Tma (° C.) is ½ flown-out temperature of the toner by a capillary type flow tester, and Tmb (° C.) is ½ flown-out temperature of a melt kneaded mixture of the toner by the capillary type flow tester, and wherein Tma is from 130° C. to 200° C.
摘要:
Provided is a resin particle comprising a resin (a) and a filler (b) contained in the particle; the particle has a volume average particle diameter of from 0.1 to 300 μm and a shape factor of from 110 to 300; the particle has an outer shell layer (S) comprising at least a portion of the filler (b); the layer (S) is at least 0.01 μm thick and has a thickness that is ½ or less of the maximum inscribed circle radius of the particle cross section. When used as a toner resin, it is excellent in blade cleaning properties and wide in the fixation temperature range; when employed as a paint additive or a cosmetics additive, it is excellent in masking properties; when used as paper coating additive, it is excellent in ink retention; when utilized as an abrasive, it is excellent in abrasion.