公开(公告)号：US20170168407A1

公开(公告)日：2017-06-15

申请号：US15370134

申请日：2016-12-06

Applicant: Konica Minolta, Inc.

Inventor： Junya ONISHI ,  Shiro HIRANO ,  Noboru UEDA ,  Kouji SUGAMA ,  Aya SHIRAI

IPC: G03G9/08 ,  G03G9/093 ,  G03G9/087

CPC classification number: G03G9/0804 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08797 ,  G03G9/09328 ,  G03G9/09364 ,  G03G9/09392

Abstract: The production process of the present invention includes: a first step of heating a dispersion containing an aqueous medium and a binder resin containing a crystalline resin to a temperature higher than or equal to the melting point of the crystalline resin in a step of aggregating and fusing a fine particle of the binder resin containing the crystalline resin to produce a toner base particle; a second step of cooling the dispersion having been heated in the first step and having a temperature higher than the recrystallization temperature Rc of the crystalline resin to a temperature lower than Rc at a temperature-lowering rate of 1° C./min or higher; and a third step of maintaining the dispersion having been cooled in the second step at a temperature higher than or equal to Rc−25° C. and lower than or equal to Rc−5° C. for 30 minutes or longer.

公开(公告)号：US20150064616A1

公开(公告)日：2015-03-05

申请号：US14476035

申请日：2014-09-03

Applicant: Konica Minolta, Inc.

Inventor： Kouji SEKIGUCHI ,  Tatsuya NAGASE ,  Shiro HIRANO ,  Junya ONISHI ,  Kenshi MIYAJIMA ,  Tatsuya FUJISAKI

IPC: G03G9/08

CPC classification number: G03G9/0825 ,  G03G9/08 ,  G03G9/0819 ,  G03G9/08704 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08788 ,  G03G9/08795 ,  G03G9/08797

Abstract: An electrostatic latent image developing toner includes a toner base particle which contains at least a binder resin, and has a domain-matrix structure, in which a matrix contains a styrene-acrylic resin, a domain contains an amorphous resin which is formed by combining a vinyl-based polymerized segment and a polyester-based polymerized segment, and the domain containing the amorphous resin and having a diameter of 100 nm or larger has a number-average domain diameter which falls in the range from 150 to 1000 nm.

Abstract translation: 静电潜像显影调色剂包括至少含有粘合剂树脂的调色剂基体颗粒，并且具有其中基质含有苯乙烯 - 丙烯酸树脂的畴 - 基质结构，所述结构域含有通过将 乙烯基类聚合链段和聚酯类聚合链段，并且含有直径为100nm以上的非晶质树脂的结构域的平均畴直径为150〜1000nm的范围。