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:
An oilless-fixing toner is provided for use in a vertical image developer including a toner feeder feeding the oilless-fixing toner vertically below; a developing roller located vertically below the toner feeder; and a screw blade agitating the oilless-fixing toner, wherein the oilless-fixing toner contains: a resin including a wax; a colorant; and an external additive, wherein a total energy determined from a torque and a load of the screw blade is from 450 to 530 mJ when rotating in the oilless-fixing toner at 100 mm/s, and a ratio of total energy at 10 mm/s to total energy at 100 mm/s is from 2.0 to 3.0.
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:
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 fist 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:
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:
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 toner including toner particles including a binder resin, and a colorant, and an external additive present on a surface of the toner particles, wherein the external additive includes a silica having an average primary particle diameter of from 100 to 500 nm and a BET specific surface area of from 800 to 1000 m2/g. An image forming method including forming an electrostatic image on an image bearing member; developing the electrostatic image with the toner to form a toner image; and transferring the toner image on to a receiving material. An image forming apparatus including an image bearing member bearing an electrostatic image; a developing device developing an electrostatic image with the toner to form a toner image on the image bearing member; a transfer device transferring the toner image to a receiving material; and a fixing device fixing the toner image on the receiving material.
摘要:
A toner including toner particles including a binder resin, and a colorant, and an external additive present on a surface of the toner particles, wherein the external additive includes a silica having an average primary particle diameter of from 100 to 500 nm and a BET specific surface area of from 800 to 1000 m2/g. An image forming method including forming an electrostatic image on an image bearing member; developing the electrostatic image with the toner to form a toner image; and transferring the toner image on to a receiving material. An image forming apparatus including an image bearing member bearing an electrostatic image; a developing device developing an electrostatic image with the toner to form a toner image on the image bearing member; a transfer device transferring the toner image to a receiving material; and a fixing device fixing the toner image on the receiving material.
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.
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.