摘要:
A toner containing core particles each containing at least a resin A having a polyester skeleton and a colorant; and vinyl resin fine particles each of which encapsulates a resin B having at least a polyester skeleton and an endothermic peak measured by differential scanning calorimeter (DSC) at 40° C. to 110° C., wherein the vinyl resin fine particles are attached onto each of the core particles.
摘要:
The present invention provides a developing device that allows for maintaining the conveyance amount of a toner within a certain definite range. A developing device 12 of the present invention is provided with a toner conveying unit 13 configured to convey a first toner and a controlling member 15 configured to control the thickness of a toner layer formed with the first toner conveyed by the toner conveying unit 13, wherein a second toner provided with a charged amount per unit mass that differs from a charged amount per unit mass of the first toner is applied over the surface of the controlling member 15.
摘要:
To provide a toner containing at least a toner base containing a binder resin and a colorant, and an inorganic fine particle, wherein the inorganic fine particle contains a compound oxide expressed by the following Composition Formula (1): [M1]aSibOc Composition Formula (1) where “M1” represents a metal element selected from Sr, Mg, Zn, Co, Mn and Ce, “a” and “b” each represents an integer of 1 to 9 and “c” represents an integer of 3 to 9, wherein an average primary particle diameter of the compound oxide is 0.02 μm to 1.5 μm, and an average secondary particle diameter of the compound oxide is 0.08 μm to 3.5 μm, where the secondary particle is an aggregate of the primary particles.
摘要:
The present invention is to provide a nonmagnetic one-component toner containing a colorant, and a binder resin, wherein metal oxide fine particles are fixed on a toner surface with an adhesion strength of 95% to 99%, the toner has a direct current resistance of 1E7 Ω·cm to 1E9 Ω·cm, and an electrostatic capacity of 1.0E-12F to 1.5E-11F.
摘要:
A developing device is provided including a developer bearing member configured in close proximity to or contacting the surface of the photosensitive member, a developer supplying member arranged in a developer supplying section and configured to supply the surface of the photosensitive member with developer, a developer storing section arranged above the developer supplying section to store the developer, an inlet arranged above the developer supplying member through which developer is transferred from the developer storing section to the developer supplying section, and a developer regulating member configured to regulate the thickness of the developer on the surface of the developer bearing member, wherein no portion of the inlet is overlaps the regulating member in the vertical direction.
摘要:
A toner including toner particles including a binder resin, a colorant and a release agent, and an external additive including a first particulate inorganic material having a formula of MgxSiyOx+2y where each of x and y is an integer, and a number average secondary particle diameter of from 0.02 μm to 2 μm, wherein the first atomic ratio (Mg/Si) s in a surface portion of the first particulate inorganic material is not greater than (preferably less than) the second atomic ratio (Mg/Si)e in the entire first particulate inorganic material. Alternatively, a toner including toner particles including a binder resin and a colorant, and an external additive which includes a particulate inorganic material having a formula of MgxSiyOx+2y where each of x and y is an integer and which has a surface treated with a fatty acid.
摘要翻译:包括调色剂颗粒的调色剂,包括粘合剂树脂,着色剂和脱模剂,以及包含具有下式的第一颗粒无机材料的外部添加剂:具有下式的Mg x Si x + 2y其中x和y各自为整数,数均二次粒径为0.02μm至2μm,其中表面部分中的第一原子比(Mg / Si) 的第一颗粒无机材料在第一颗粒无机材料的整体中不大于(优选小于)第二原子比(Mg / Si)e。 或者,包括包含粘合剂树脂和着色剂的调色剂颗粒的调色剂和包含具有下列化学式的颗粒状无机材料的外部添加剂:具有下列化学式的化合物:具有下式的Mg x Si > x + 2y其中x和y各自是整数,并且具有用脂肪酸处理的表面。
摘要:
A toner is provided including a colorant; a resin composition (A) comprising at least one binder resin and a hydrocarbon wax having a melting point of 70-90° C. in an amount of from 6 to 30% by weight based on total weight of resin composition (A), and having a softening point (T1/2(A)) of from 120 to 150° C.; and a resin composition (B) having a softening point (T1/2 (B)) of from 100 to 130° C., wherein a weight ratio of the resin composition (A) to the resin composition (B) is from 10/90 to 45/55, and the following relationship is satisfied: T1/2(A)≧T1/2(B)+3; and the use of the toner in an image forming method, an image forming apparatus, and a process cartridge.
摘要:
It is an object of the present invention to provide a toner containing toner particles and inorganic fine particles wherein the inorganic fine particles are externally added to the toner particles which contain a binder resin and a colorant and at least one type of the inorganic fine particles is a compound oxide having a relative permittivity measured at 1 MHz of 2 to 10 and a volume resistivity of 1011 Ω*cm or more and an image forming method using the toner.
摘要:
A toner, including: a binder resin; releasing agent-encapsulating capsules; and a colorant, wherein the releasing agent-encapsulating capsules each include: a capsule formed of a resin (I) which is different from the binder resin; and a releasing agent (RA) which is encapsulated in the capsule, and the releasing agent-encapsulating capsules exist in the binder resin, and wherein 50% to 100% of the releasing agent-encapsulating capsules exist in a region from a surface of the toner to a depth of 0.10 times a volume-average particle diameter of the toner.
摘要:
Provided is an image forming apparatus including at least a latent image bearing member, a latent electrostatic image forming unit, a developing unit which includes at least a developing roller and a supply roller, and a transfer unit, wherein both of a diameter R (mm) of the developing roller and a diameter R′ (mm) of the supply roller are 12 mm or less; the toner contains at least a binder resin, a wax, and a colorant with the wax having a melting point of 75° C. or less; an amount of the wax exposed on a surface of the toner is 10 mg/g to 30 mg/g; and when a diameter (mm) of the developing roller is represented by R the toner has a torque T (mNm) satisfying the inequation, 20/R