公开(公告)号：JP2010181655A

公开(公告)日：2010-08-19

申请号：JP2009025403

申请日：2009-02-05

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： YOSHIOKA NOBUYUKI ,  KAMOTO TAKANORI ,  WADA OSAMU

IPC: G03G9/113 ,  G03G9/097

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing carrier, which can remove an organic solvent in a resin coated layer without causing the degradation and deterioration of strength in a resin of the resin coated layer and without causing the carrier aggregation due to the fusion of the resin coated layer, when forming the resin coated layer on a surface of a carrier core material by a wet-coating method, to provide a carrier manufactured by the method, to provide a two-component developer that can prevent flowability from degrading by containing the carrier, and to provide a development device and image forming apparatus using the two-component developer. SOLUTION: In the carrier, the resin coated layer is formed which contains a charge control agent on the surface of the carrier core material. The method of manufacturing the carrier includes a resin coating step and a heating step. In the resin coating step, the surface of the carrier core material is coated with a coating resin solution, thereby obtaining the resin coated carrier. In the heating step, the resin coated carrier is heated in an atmosphere of superheated steam. In the heating step, the temperature in the atmosphere of the superheated steam is set at a range of 200 to 300°C. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种制造载体的方法，其可以除去树脂涂层中的有机溶剂，而不会引起树脂涂层的树脂的降解和劣化，并且不会引起载体聚集 对于树脂涂层的熔合，当通过湿式涂覆法在载体芯材的表面上形成树脂涂层时，提供通过该方法制造的载体，以提供可以防止流动性的双组分显影剂 通过容纳载体而降解，并提供使用双组分显影剂的显影装置和成像装置。 解决方案：在载体中，形成在载体芯材表面上含有电荷控制剂的树脂涂层。 制造载体的方法包括树脂涂覆步骤和加热步骤。 在树脂涂布工序中，用涂布树脂溶液涂布载体芯材的表面，得到树脂被覆载体。 在加热步骤中，树脂被覆载体在过热蒸汽的气氛中加热。 在加热步骤中，过热蒸汽的气氛中的温度设定在200〜300℃的范围。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010128393A

公开(公告)日：2010-06-10

申请号：JP2008305647

申请日：2008-11-28

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： YOSHIOKA NOBUYUKI ,  KAMOTO TAKANORI ,  WADA OSAMU

IPC: G03G9/113

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a carrier by which a carrier having a uniform resin coating layer can be obtained by eliminating a temperature difference between the surface side and the inner side of the resin coating layer even when the resin coating layer is thick, upon forming the resin coating layer on the surface of a carrier core, and to provide a carrier manufactured by the above method, a two-component developer containing the carrier, and a developing device and an image forming apparatus using the two-component developer. SOLUTION: The method for manufacturing a carrier having a resin coating layer formed on the surface of a carrier core includes a resin particle adhering step and a resin coating layer forming step. In the resin particle adhering step, resin particles are mechanically adhered to the surface of the carrier core to obtain a resin particle adhered carrier. In the resin coating layer forming step, the resin particle adhered carrier is heated in a superheated steam atmosphere to form a resin coating layer on the carrier core surface. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种制造载体的方法，即通过除去树脂涂层的表面侧和内侧之间的温度差，即使在 在载体芯的表面上形成树脂被覆层，并且通过上述方法制造的载体，含有载体的双组分显影剂和显影装置以及使用 双组分开发者。 解决方案：制造具有形成在载体芯的表面上的树脂涂层的载体的方法包括树脂颗粒粘附步骤和树脂涂层形成步骤。 在树脂颗粒粘合步骤中，树脂颗粒机械地粘附到载体芯的表面，以获得树脂颗粒粘附载体。 在树脂被覆层形成工序中，将树脂颗粒粘附载体在过热蒸汽气氛中加热，在载体芯表面形成树脂被覆层。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009282209A

公开(公告)日：2009-12-03

申请号：JP2008133035

申请日：2008-05-21

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MUTO YOSHINORI ,  IWAMATSU TADASHI ,  YOSHIOKA NOBUYUKI ,  HIRAKAWA HIROYUKI ,  HARA TAKASHI ,  KAMOTO TAKANORI ,  WADA OSAMU

IPC: G03G9/113 ,  G03G9/10

Abstract: PROBLEM TO BE SOLVED: To provide a coated carrier for suppressing decrease in a conveyance amount caused by changes in a carrier shape with lapse of time, and maintaining high quality image output for a long period of time. SOLUTION: The carrier 1 is a coated carrier having wear resistance and comprising a carrier core material 6 and a coating layer 7 coating the carrier core material 6, in which the surface of the carrier core 6 is partially exposed. When a shape factor (SF-2) of the carrier core material 6 is denoted as a first shape factor, that of the initial carrier 1 is denoted as a second shape factor, and that of the coated carrier changed by wear of the carrier core material 6 and the coating layer 7 of the initial carrier 1 is denoted as a third shape factor, respectively, the first shape factor ranges from 120 to 150, and a ratio of the third shape factor to the second shape factor is not less than 90%. Thereby, as a wear balance in the resin coated portion where a concave portion is formed can be optimized and decrease in the shape factor with time can be prevented, decrease in a conveyance amount of the developer can be suppressed. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种涂覆载体，用于抑制由于载流子形状随时间的变化而导致的输送量的降低，并且长时间保持高质量的图像输出。 解决方案：载体1是具有耐磨性的涂层载体，并且包括载体芯材料6和涂覆载体芯材料6的涂层7，其中载体芯6的表面部分地露出。 当载体芯材6的形状因子（SF-2）被表示为第一形状因子时，将初始载体1的形状因子（SF-2）表示为第二形状因子，并且涂覆载体的载荷芯片 初始载体1的材料6和涂层7分别被表示为第三形状因子，第一形状因子范围为120至150，第三形状因子与第二形状因子的比率不小于90 ％。 因此，作为在形成有凹部的树脂涂布部的磨损平衡可以优化，可以防止形状因素随时间的减少，可以抑制显影剂的输送量的减少。 版权所有（C）2010，JPO＆INPIT