Abstract:
An electrostatic latent image developing toner contains a plurality of toner particles. The toner particles each include a toner mother particle and an external additive. The toner mother particle includes a toner core and a shell layer disposed over a surface of the toner core. The shell layer contains a thermosetting resin and a thermoplastic resin. The toner mother particles have a surface roughness of no less than 10 nm and no greater than 15 nm. The toner mother particles have a surface adsorbability of no less than 10 nN and no greater than 20 nN.
Abstract:
A toner includes an amorphous resin; and a crystalline polyester resin dispersed in the amorphous resin. The crystalline polyester resin has a volume-average particle diameter (Dv) of from 0.07 to 0.20 μm, and a ratio (Dv/Dn) of the volume-average particle diameter (Dv) to a number-average particle diameter (Dn) thereof of from 1.00 to 2.25.
Abstract:
Provided is a toner including at least a polyester resin, wherein the polyester resin has a urethane bond and a urea bond, wherein a ratio (B)/(A) between a nitrogen content (A) in a compound that is contained in a pyrolysate of the toner produced when the toner is pyrolyzed from 50° C. to 700° C. and has two isocyanate groups and a nitrogen content (B) in a compound that is contained in the pyrolysate and has one isocyanate group and one amino group satisfies 0.6≦(B)/(A)≦1.3, and wherein a nitrogen content in the surface of the toner is from 0 atom % to 0.9 atom %.
Abstract:
A transfer printing method including applying a curable sublimation toner having at least one curable component and at least one sublimation colorant in a desired pattern onto a transfer substrate to form an image on the transfer substrate at a first temperature which is below the sublimation temperature of the sublimation colorant; wherein the curable sublimation toner is a conventional toner or a chemical toner; and wherein the curable sublimation toner includes at least one curable amorphous resin and optionally, a crystalline resin; curing the image on the transfer substrate; and optionally, bringing the transfer substrate into contact with a final image-receiving substrate, optionally applying pressure, and heating to a second temperature which is sufficient to cause the sublimation colorant to sublime and form a permanent image on the final image-receiving substrate.
Abstract:
According to one embodiment, a method for erasing an image includes erasing an image formed using a toner containing at least a binder resin, an electron donating color developable agent, and an electron accepting color developing agent by heating for 10 seconds or less. A color difference ΔE between a region where the image is erased and a paper is 5 or less.
Abstract:
An image forming apparatus includes a developing unit that develops an electrostatic charge image formed on an image holding member with a developer containing a toner, an intermediate transfer member, and a guide unit that guides at least one of the image holding member and the intermediate transfer member to a primary transfer position to cause a portion of the surface of the image holding member and a portion of the surface of the intermediate transfer member to follow each other, wherein the toner has a sea and island structure of a sea portion containing a binder resin and an island portion containing a release agent, and has a maximum frequent value in distribution of eccentricity B of the island portion containing the release agent and a skewness in the distribution of eccentricity B each falling within the specific ranges as described in the specification.
Abstract:
To provide an electrophotographic toner, which contains a crystalline resin, a non-crystalline resin, a colorant, and a releasing agent, wherein the toner has a storage elastic modulus of 5.0×104 Pa to 5.0×106 Pa at 80° C., and a storage elastic modulus of 2.0×102 Pa to 2.0×103 Pa at 140° C., and wherein the toner has a ratio (C)/((C)+(A)) of 0.10 or greater, where (C) is an integrated intensity of a diffraction spectrum derived from a crystalline structure, (A) is an integrated intensity of a diffraction spectrum derived from a non-crystalline structure, and the diffraction spectrum is a diffraction spectrum of the toner as measured by an X-ray diffraction spectrometer.
Abstract:
A toner, including: a crystalline resin; a non-crystalline resin; and a colorant, wherein the toner has a sea-island structure which includes a sea containing the crystalline resin and an island containing the non-crystalline resin and the colorant, wherein the island is 1.0 μm or less in domain diameter, and wherein the toner is 1.7×104 Pa or less in storage elastic modulus at 160° C.
Abstract:
A toner, including: colorant; resin; and release agent, wherein MTHF is 4.0×103 to 1.0×106, where MTHF is molecular weight of a peak-top of a peak whose differential molecular distribution value is maximum in differential molecular weight distribution curve derived from the resin, the molecular weight distribution being obtained by GPC of the toner using THF as solvent, and wherein there is no peak at higher molecular weight side of maximum peak (Pmax) present at a molecular weight of 5×104 or less in molecular weight distribution derived from the resin, the molecular weight distribution being obtained by GPC of the toner using HFIP as solvent, or there are one or more peaks at the higher molecular weight of the Pmax, total peak area is 35% or less of area of the Pmax, and the Pmax has half value width of 3.5×104 or less.
Abstract:
An electrostatic charge image developing toner has toner particles that contain a binder resin containing a polyester resin, a release agent containing hydrocarbon-based wax, styrene(meth)acrylic resin particles, and an aluminum element, wherein fluorescent X-ray NET intensity of the aluminum element existing in the toner particles is from 0.1 to 0.3, and 70% or more of the release agent among the entire release agent exists within 800 nm from the surface of the toner particles.