摘要:
To provide a pulverized toner excellent in the releasing ability and cleaning ability, and an image-forming apparatus for one-component developer, and a process cartridge using the pulverized toner. The pulverized toner contains a toner base particle containing at least a binder resin, a colorant, and a releasing agent, the mass ratio of the releasing agent to the binder resin is 3.0% to 6.0%, the adhesive force among the pulverized toners at 25° C. to 55° C. is 20 g to 80 g, and the pulverized toner is used for the image-forming apparatus for one-component developer containing the cleaning unit configured to dispose an elastic blade adjacent to the surface of the image bearing member so as to clean the surface.
摘要:
A negatively-chargeable non-magnetic one-component developer for developing an electrostatic latent image using a contact DC-bias development method, having a capacitance of 1.05×10−12 to 1.25×10−12 F, a volume resistivity of 5.0×1010 to 5.0×1012 Ω·cm and a dielectric loss tangent of 1.0×10−3 to 2.0×10−2. In a contact DC-bias development method, the developer has a capacitance of 1.30×10−12 to 1.60×10−12 F, a resistivity of 5.0×109 to 5.0×1010 Ω·cm and a dielectric loss tangent of 1.0×10−3 to 2.0×10−2. In a non-contact DC/AC-bias development method, the developer has a capacitance of 1.45×10−12 to 1.60×10−12 F, a resistivity of 5.0×109 to 1.0×1010 Ω·cm and a dielectric loss tangent of 1.0×10−3 to 2.0×10−2.
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:包含调色剂颗粒的调色剂,包括粘合剂树脂,着色剂和脱模剂,以及外部添加剂,其包含具有下式的Mg x Se y O x + 2 y的第一颗粒无机材料,其中x和y各自为整数,数均二次颗粒 直径为0.02μm至2μm,其中第一颗粒无机材料的表面部分中的第一原子比(Mg / Si)s不大于(优选小于)第二原子比(Mg / Si)e 整个第一颗粒无机材料。 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式为Mg x Se y O x + 2 y的颗粒状无机材料的外部添加剂,其中x和y各自为整数,并且其表面用脂肪 酸。
摘要:
A toner kit containing at least a black toner, a yellow toner, a magenta toner and a cyan toner, wherein these toners have at least the binder resin, the colorant and the charge controlling agent having the molecular structure containing K+ as the counterion, when the K+ intensity detected by the fluorescent X ray on the surface of the black toner is Kk, the K+ intensity detected by the fluorescent X ray on the surface of the yellow toner is Ky, the K+ intensity detected by the fluorescent X ray on the surface of the magenta toner is Km and the K+ intensity detected by the fluorescent X ray on the surface of the cyan toner is Kc, the following formulae: Kk
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 1011Ω·cm or more and an image forming method using the toner.
摘要:
Toner for electrostatic charge development wherein no scumming occurs, and toner leakage caused by charge defect of the toner on a developing roller can be inhibited, and an excellent image stability is obtained is provided.The toner used for an image forming method having a latent electrostatic image forming step of forming a latent electrostatic image on a latent electrostatic image bearing member primarily charged, a developing step of developing the latent electrostatic image by each toner which multiple developing devices have to form a toner image on the latent electrostatic image bearing member, a transferring step of transferring the toner image with respective colors formed on the latent electrostatic image bearing member onto a recording material and a fixing step of fixing the toner image transferred onto the recording material, wherein the toner comprises a colorant and a resin and contains an organic boron compound represented by a following chemical formula (A) as a charge controlling agent, further the toner is treated with an inorganic fine particle and at least one of the inorganic particles is a magnesium silicate compound represented by a following general formula [2] is provided. wherein X is an alkali metal, R1, R2, R3 or R4 each represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom. MgxSiyO(x+2y) [2] wherein x and y are integers.
摘要:
A toner including an amorphous resin (R), a crystalline material (A) which is compatible with the amorphous resin (R) and has a melting point of 80° C. or lower, a resin (I) which is different from the amorphous resin (R), and a colorant, wherein the crystalline material (A) is capsulated by the resin (I) and the capsulated crystalline material (A) is present in the amorphous resin (R).
摘要:
A toner including a binder resin, a wax, and a colorant, wherein particles of the wax having a particle diameter of less than 1.00 μm are included in the toner in an amount of not less than 35% by number and less than 55% by number, and wherein the wax has a particle diameter distribution property such that when particle diameters of particles of the wax are classified into ranges having a width of 0.05 μm, the wax has a particle diameter mode value that is not less than 0.75 μm and less than 1.00 μm; and a fixing method and an image forming method using the above toner.
摘要:
A negatively-chargeable non-magnetic one-component developer for developing an electrostatic latent image using a contact DC-bias development method, having a capacitance of 1.05×10−12 to 1.25×10−12 F, a volume resistivity of 5.0×1010 to 5.0×1012 Ω·cm and a dielectric loss tangent of 1.0×10−3 to 2.0×10−2. In a contact DC-bias development method, the developer has a capacitance of 1.30×10−12 to 1.60×10−12 F, a resistivity of 5.0×109 to 5.0×1010 Ω·cm and a dielectric loss tangent of 1.0×10−3 to 2.0×10−2. In a non-contact DC/AC-bias development method, the developer has a capacitance of 1.45×10−12 to 1.60×10−12 F, a resistivity of 5.0×109 to 1.0×1010 Ω·cm and a dielectric loss tangent of 1.0×10−3 to 2.0×10−2.
摘要:
A cleaning device equipped with an elastic blade configured to make contact with an image bearing member to remove a toner remaining on the surface of an image bearing member, wherein the toner comprises at least a releasing agent in toner particles and at least two or more external additives of a first external additive composed of a hydrophobic silica having an average particle diameter of 5 nm to 30 nm and a second external additive composed of a hydrophobic silica having an average particle diameter of 60 nm to 300 nm, and has an average circularity of 0.880 to 0.935; the rebound elasticity modulus of an elastic material used for the elastic blade making contact with the image bearing member is 35% or more under the condition of 25° C, and the number of vibrations at the blade edge is 2.0 kHz to 4.0 kHz.