公开(公告)号：US08053157B2

公开(公告)日：2011-11-08

申请号：US12226218

申请日：2007-12-14

Applicant: Woo-Cheul Jung ,  Ji-Hoon Lee ,  Hui-Je Lee ,  Yu-Na Kim ,  Jung-Woo Kim ,  Chang Soon Lee

Inventor： Woo-Cheul Jung ,  Ji-Hoon Lee ,  Hui-Je Lee ,  Yu-Na Kim ,  Jung-Woo Kim ,  Chang Soon Lee

IPC: G03G9/093

CPC classification number: G03G9/09392 ,  G03G9/09321 ,  G03G9/09335 ,  G03G9/09364 ,  G03G9/09378 ,  G03G9/09385

Abstract: There is provided a toner having good charging characteristics that is composed of a core region and a thin shell in which a charge control agent is densely distributed so as to improve charging characteristics of the toner, and a method for manufacturing the same. The method for manufacturing a toner having a bi-layered structure includes: producing a toner core using a suspension polymerization method; preparing a suspension of toner particles having a core-shell structure by forming a rigid shell on a surface of the toner core; and recovering the toner particles from the suspension as a post-processing operation.

Abstract translation: 提供了具有良好的充电特性的调色剂，其由芯区域和薄壳体组成，其中电荷控制剂密集分布以改善调色剂的充电特性及其制造方法。 具有双层结构的调色剂的制造方法包括：使用悬浮聚合法制造调色剂芯; 通过在调色剂芯的表面上形成刚性壳来制备具有核 - 壳结构的调色剂颗粒的悬浮液; 并且作为后处理操作从悬浮液中回收调色剂颗粒。

公开(公告)号：US20090246673A1

公开(公告)日：2009-10-01

申请号：US12226218

申请日：2007-12-14

Applicant: Woo-Cheul Jung ,  Ji-Hoon Lee ,  Hui-Je Lee ,  Yu-Na Kim ,  Jung-Woo Kim ,  Chang Soon Lee

Inventor： Woo-Cheul Jung ,  Ji-Hoon Lee ,  Hui-Je Lee ,  Yu-Na Kim ,  Jung-Woo Kim ,  Chang Soon Lee

IPC: G03G9/08

CPC classification number: G03G9/09392 ,  G03G9/09321 ,  G03G9/09335 ,  G03G9/09364 ,  G03G9/09378 ,  G03G9/09385

Abstract: There is provided a toner having good charging characteristics that is composed of a core region and a thin shell in which a charge control agent is densely distributed so as to improve charging characteristics of the toner, and a method for manufacturing the same. The method for manufacturing a toner having a bi-layered structure includes: producing a toner core using a suspension polymerization method; preparing a suspension of toner particles having a core-shell structure by forming a rigid shell on a surface of the toner core; and recovering the toner particles from the suspension as a post-processing operation.

Abstract translation: 提供了具有良好的充电特性的调色剂，其由芯区域和薄壳体组成，其中电荷控制剂密集分布以改善调色剂的充电特性及其制造方法。 具有双层结构的调色剂的制造方法包括：使用悬浮聚合法制造调色剂芯; 通过在调色剂芯的表面上形成刚性壳来制备具有核 - 壳结构的调色剂颗粒的悬浮液; 并且作为后处理操作从悬浮液中回收调色剂颗粒。

公开(公告)号：US20090280430A1

公开(公告)日：2009-11-12

申请号：US12226065

申请日：2008-01-30

Applicant: Hui Je Lee ,  Woo Cheul Jung ,  Ji Hoon Lee ,  Yu Na Kim ,  Jung Woo Kim

Inventor： Hui Je Lee ,  Woo Cheul Jung ,  Ji Hoon Lee ,  Yu Na Kim ,  Jung Woo Kim

IPC: G03G9/087 ,  G03G9/08

CPC classification number: G03G9/0804 ,  G03G9/0806 ,  G03G9/08702 ,  G03G9/08782 ,  G03G9/09741 ,  G03G9/09766 ,  G03G9/09775 ,  G03G9/09783 ,  G03G9/09791

Abstract: There is provided a method for manufacturing a toner capable of providing a toner having excellent low-temperature fixing property and anti-offset property by adjusting a molecular weight distribution of a polymerization toner to a narrow distribution range. The method is characterized in that a toner is polymerized using a reversible addition-fragmentation chain transfer polymerization (RAFT) method by adding a dithioacetate, xanthate or dithioester-based chain transfer agent in the polymerization of a toner. The method for manufacturing a toner comprises: dissolving a dispersant in water to prepare an aqueous dispersion solution; mixing a binder resin monomer, a charge control agent, a pigment, a wax and a dithioacetate, xanthate or dithioester-based chain transfer agent to prepare a monomer mixture; adding the monomer mixture to the aqueous dispersion solution and suspension-polymerizing the monomer mixture to form a toner composition; removing the dispersant from the toner composition; and drying the dispersant-free toner composition under a vacuum condition.

Abstract translation: 提供了一种制造调色剂的方法，该调色剂能够通过将聚合调色剂的分子量分布调节到窄的分布范围来提供具有优异的低温定影性和抗偏移性的调色剂。 该方法的特征在于，通过在调色剂的聚合中加入二硫代乙酸酯，黄原酸酯或二硫代酯类的链转移剂，使用可逆的加成 - 断裂链转移聚合（RAFT）方法使调色剂聚合。 调色剂的制造方法包括：将分散剂溶解在水中以制备水分散液; 混合粘合剂树脂单体，电荷控制剂，颜料，蜡和二硫代乙酸酯，黄原酸酯或二硫代酯基链转移剂以制备单体混合物; 将单体混合物加入到水分散液中，并使单体混合物悬浮聚合以形成调色剂组合物; 从调色剂组合物中除去分散剂; 并在真空条件下干燥无分散剂的调色剂组合物。