摘要:
The resin coated carrier is used with a toner in which an external additive having an average primary particle size of 50 nm or more is added to a toner particle, and has a carrier core and a resin coating layer on the surface of the carrier core. In the resin coated carrier, the following expression (1) is satisfied: 0.5≦−log {(A/C)/(B/C)}≦2.5 (1) wherein A represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm that is obtained by conducting a stirring test, B represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm before the stirring test, and C represents a volume resistance value (Ω/cm) of the carrier core in an electric field of 1000 V/cm.
摘要翻译:树脂涂布载体与调色剂一起使用,其中平均一次粒径为50nm以上的外部添加剂添加到调色剂颗粒中,并且在载体芯的表面上具有载体芯和树脂涂层。 在树脂被覆载体中满足以下表达式(1):0.5≦̸ -log {(A / C)/(B / C)}≦̸ 2.5(1)其中A表示体积电阻值(& cm),通过进行搅拌试验而得到的电场为1000V / cm的树脂被覆载体的B,表示在1000V / cm 2的电场中的树脂被覆载体的体积电阻值(& cm,并且C表示载体芯在1000V / cm的电场中的体积电阻值(& R g / cm)。
摘要:
The resin coated carrier is used with a toner in which an external additive having an average primary particle size of 50 nm or more is added to a toner particle, and has a carrier core and a resin coating layer on the surface of the carrier core. In the resin coated carrier, the following expression (1) is satisfied: 0.5≦−log {(A/C)/(B/C)}≦2.5 (1) wherein A represents a volume resistance value (Q/cm) of the resin coated carrier in an electric field of 1000 V/cm that is obtained by conducting a stirring test, B represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm before the stirring test, and C represents a volume resistance value (Ω/cm) of the carrier core in an electric field of 1000 V/cm.
摘要翻译:树脂涂布载体与调色剂一起使用,其中平均一次粒径为50nm以上的外部添加剂添加到调色剂颗粒中,并且在载体芯的表面上具有载体芯和树脂涂层。 在树脂涂布载体中,满足以下表达式(1):0.5A / C)/(B / C)}其中A表示在1000的电场中树脂涂布载体的体积电阻值(Q / cm) V / cm,B表示搅拌试验前的1000V / cm的电场中的树脂被覆载体的体积电阻值(Ω/ cm),C表示体积电阻值( 在1000V / cm的电场中的载体芯的Ω/ cm 2。
摘要:
A carrier of the present invention is used in a developer including a toner which includes at least a binder resin and an organic colorant, and the carrier has a core and a coating formed on the surface of the core, the coating including (i) a charge control agent for controlling a charge whose polarity is the same as a polarity of a charge controlled by a charge control agent included in the toner, and (ii) a conductive particles. The use of the carrier of the present invention enables: prevention of decrease in the charging amount of the toner which includes at least a binder resin and an organic colorant; and formation of a stable, high-resolution, high-quality image which has very few image defects such as a photographic fog.
摘要:
A developer of the present invention includes a toner and a carrier. The toner contains a charge control agent, and the carrier has on its surface a coating layer to which a charge control agent and electrically conductive particles are added. All of constituent elements of one of the charge control agent of the toner and the charge control agent of the carrier are contained in constituent elements of the other one of the charge control agents. With the configuration, the developer of the present invention is capable of stably maintaining a toner charge amount and outputting high-quality images for long periods.
摘要:
A carrier of the present invention is used in a developer including a toner which includes at least a binder resin and an organic colorant, and the carrier has a core and a coating formed on the surface of the core, the coating including (i) a charge control agent for controlling a charge whose polarity is the same as a polarity of a charge controlled by a charge control agent included in the toner, and (ii) a conductive particles. The use of the carrier of the present invention enables: prevention of decrease in the charging amount of the toner which includes at least a binder resin and an organic colorant; and formation of a stable, high-resolution, high-quality image which has very few image defects such as a photographic fog.
摘要:
Regarding a magnetic carrier of the present invention, a surface of a magnetic core material is coated with a coating layer containing electrically conductive particles and a charge control agent composed of same components as components of a charge control agent contained in a electrophotographic toner. Further, the magnetic carrier exhibits an electric resistance value of 8.22×107 Ωcm to 1.12×1010 Ωcm in an electric field of 4×103 V/cm. This allows the magnetic carrier to stay capable of charging the electrophotographic toner even over a long period of time.
摘要:
A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm3 or more and 2.45 g/cm3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y≦−1.54x+5.93 (1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.
摘要翻译:提供了双组分开发。 双组分显影剂包括含有粘合剂树脂,着色剂和脱模剂的调色剂和由载体芯材和形成在载体芯材的表面上的树脂涂层构成的树脂涂布载体。 调色剂的调色剂表面的脱模剂的曝光率为1.00%以上且3.07%以下。 载体芯材的表观密度为1.86g / cm 3以上且2.45g / cm 3以下。 调色剂的脱模剂的曝光率和载体芯材的表观密度满足下式(1):y≦̸ -1.54x + 5.93(1)其中y表示调色剂的脱模剂的曝光率 ,x表示载体芯材的表观密度。
摘要:
A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm3 or more and 2.45 g/cm3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y≦−1.54x+5.93 (1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.
摘要翻译:提供了双组分开发。 双组分显影剂包括含有粘合剂树脂,着色剂和脱模剂的调色剂和由载体芯材和形成在载体芯材的表面上的树脂涂层构成的树脂涂布载体。 调色剂的调色剂表面的脱模剂的曝光率为1.00%以上且3.07%以下。 载体芯材的表观密度为1.86g / cm 3以上且2.45g / cm 3以下。 调色剂的脱模剂的曝光率和载体芯材的表观密度满足下式(1):y≦̸ -1.54x + 5.93(1)其中y表示调色剂的脱模剂的曝光率 ,x表示载体芯材的表观密度。
摘要:
A method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material is provided. A resin-coated carrier has a carrier core material and a resin coating layer formed on the surface of the carrier core material. The carrier core material has pores and an apparent density of 1.6 g/cm3 to 2.0 g/cm3 and a remanent magnetization of 10 emu/g of less. The resin coating layer is formed by a dry process of adhering resin particles to a surface of the carrier core material and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 μm. A two-component developer containing the resin-coated carrier is charged in a developing device in an image forming apparatus, and an image is formed.
摘要翻译:提供了一种制造具有对载体芯材料具有小树脂量并且在载体芯材上形成均匀的树脂涂层的低密度树脂涂覆载体的方法。 树脂被覆载体具有载体芯材和在载体芯材的表面上形成的树脂被覆层。 载体芯材料具有孔隙,表观密度为1.6g / cm 3至2.0g / cm 3,剩余磁化强度为10emu / g以下。 树脂涂层通过将树脂颗粒粘附到载体芯材的表面并对树脂颗粒施加热和冲击力的干法来形成。 树脂粒子的体积平均粒径小于1μm。 将包含树脂涂布载体的双组分显影剂装入图像形成装置的显影装置中,形成图像。
摘要:
A resin-coated carrier is provided. A resin-coated carrier includes a carrier core and a resin coating layer formed on a surface of the carrier core. The carrier core is composed of a porous material having surface fine pores formed on a surface thereof, and has an apparent density of 1.6 to 2.0 g/cm3. The resin coating layer contains cross-linked fine resin particles. Additionally, the resin-coated carrier is configured such that a volume average particle size of the cross-linked fine resin particles contained in the resin coating layer and an area average diameter of the surface fine pores satisfy a predetermined relational expression.
摘要翻译:提供树脂涂层载体。 树脂涂布载体包括载体芯和形成在载体芯的表面上的树脂涂层。 载体芯由具有在其表面形成的表面细孔的多孔材料构成,表观密度为1.6〜2.0g / cm 3。 树脂涂层含有交联的细树脂颗粒。 另外,树脂被覆载体被构造成使得包含在树脂被覆层中的交联的微粒树脂颗粒的体积平均粒径和表面细孔的面积平均直径满足预定的关系式。