摘要:
A toner is provided prepared by a wet granulation method, comprising a binder resin and a colorant, wherein the toner adsorbs ammonia (NH3) in an amount of from 70 to 400 μmol/m2 per unit of specific surface area and carbon dioxide (CO2) in an amount of not greater than 10 μmol/m2 per unit of specific surface area.
摘要:
A toner containing a binder resin including a unit of a polyester resin I having an amino group and another unit of a polyester resin II having an anion functional group and a coloring agent, wherein the toner is manufactured by dissolving or dispersing the polyester resin I, the polyester resin II and the coloring agent in an organic solvent to obtain an oil phase, dispersing the oil phase in an aqueous medium and removing the organic solvent followed by drying.
摘要:
A toner having a core containing a colorant, a release agent and a binder resin (A), and a shell containing a binder resin (B), the shell overlying the core, wherein the binder resin (A) contains a resin having a polyester skeleton, the binder resin (B) contains a vinyl copolymer resin, and a weight ratio of the shell to the core is from 0.05 to 0.5, and wherein the toner has a volume average particle diameter of from 3 to 8 μm; a toner manufacturing method of such the toner can be used in an image forming apparatus and in a process cartridge.
摘要:
A latent electrostatic image developing toner of the present invention is mainly composed of two or more binder resins, a colorant, a releasing agent and a layered compound. A first binder resin of the binder resins is a polyester resin with an acid value of 15 KOHmg/g or less. The layered compound is a compound in which at least some interlayer ions are modified by organic ions. Toner particles are prepared by granulation in an aqueous medium, and the layered compounds are localized in the surface of the particles by the pelletization in the granulation. The average circularity of the particles is 0.970 or more.
摘要:
An image forming method, including recharging untransferred toner remaining on a latent electrostatic image bearing member by using a recharging member to remove the untransferred toner from the latent electrostatic image bearing member, wherein the recharging member is a conductive member a surface of which has a contact angle of 108° or more with pure water and a Shore D hardness of 50 to 65; the coverage of the surface of the toner by an external additive is 150% or less; and a releasing agent peak ratio obtained by ATR method is 0.02 to 0.1.
摘要:
A toner including a core including at least a colorant, a release agent and a first binder resin; and a shell located overlying the core and including at least a second binder resin, wherein the first binder resin includes a polyester resin including a unit obtained from a diol selected from the group consisting of aliphatic diols and alicyclic diols, and the second binder resin includes a vinyl copolymer, and wherein a weight ratio (S/C) of the shell (S) to the core (C) is from 0.05 to 0.5 and the toner has a volume average particle diameter of from 3 to 8 μm.
摘要:
A toner for developing a latent electrostatic image produced by suspension polymerizing a polymerizable monomer composition in an aqueous dispersion medium, wherein the polymerizable monomer composition contains a polymerizable monomer, a colorant, and a layered inorganic mineral in which at least a part of an interlayer ion is replaced with an organic ion, and a process cartridge and an image forming method using the toner.
摘要:
A toner including a binder resin including a polyester resin and a vinyl resin; a wax; and a colorant, wherein the vinyl resin includes a unit obtained from a radically polymerizable monomer having an alkyloxysilyl group. An image forming apparatus including an image bearing member configured to bear an electrostatic image thereon; a developing device configured to develop the electrostatic image with a developer including the toner to form a toner image on the image bearing member; and a transfer device configured to transfer the toner image onto a receiving material. A process cartridge including an image bearing member; and a developing device configured to develop an electrostatic image on the image bearing member with a developer including the toner, wherein the process cartridge is detachably attached to an image forming apparatus as a unit.
摘要:
An image forming apparatus, wherein a surface resistivity Rse[Ω] of a charger and a volume resistivity Rsw [Ω·cm] of the composition having a low softening point satisfy the following relationship: 0.8×10−1Rse
摘要:
A toner is provided including a binder resin, a colorant, and a release agent, which has a volume average particle diameter (Dv) of from 3 to 9 μm, and wherein the binder resin and the release agent form a sea-island structure in which the island formed of the release agent is dispersed in the sea formed of the binder resin in a cross-sectional image of the toner obtained by a transmission electron microscope (TEM), and the following relationships are satisfied: IB>IA and IB>IC, wherein each of IA, IB, and IC represents an area ratio (%) of the island in an outermost region (A) of the cross-sectional image of the toner, an intermediate region (B) thereof located under the outermost region (A), and an innermost region (C) thereof located under the intermediate region (B); and a method of preparing the toner.