公开(公告)号：EP3088959A4

公开(公告)日：2017-07-26

申请号：EP14873817

申请日：2014-12-22

Applicant: KAO CORP

Inventor： YAMADA TATSUYA ,  KAMIYOSHI NOBUMICHI

IPC: G03G9/13

CPC classification number: G03G9/132 ,  G03G9/0819 ,  G03G9/125

Abstract: A liquid developer containing toner particles containing a resin and a basic dispersant in an insulating liquid, wherein the resin contains a polyester A having a furan ring. The liquid developer of the present invention is suitably used in development and the like of latent images formed in an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like.

Abstract translation: 一种含有在绝缘液体中含有树脂和碱性分散剂的调色剂颗粒的液体显影剂，其中树脂含有具有呋喃环的聚酯A. 本发明的液体显影剂适用于在电子照相方法，静电记录方法，静电印刷方法等中形成的潜像的显影等。

公开(公告)号：JP2014010164A

公开(公告)日：2014-01-20

申请号：JP2012144373

申请日：2012-06-27

Applicant: Kao Corp ,  花王株式会社

Inventor： YAMADA TATSUYA ,  IWASAKI TOSHIYA

IPC: G03G9/12 ,  G03G9/13

Abstract: PROBLEM TO BE SOLVED: To provide a production method of a liquid developer that can be used for a device in a liquid developing system and has a high solid content concentration with a small content of particles (toner fine particles) having a particle diameter of less than 0.1 μm.SOLUTION: A production method of a liquid developer comprising toner particles containing a resin and a pigment dispersed in an insulating liquid is provided, which includes steps of: obtaining a toner particle dispersion liquid (A) by dispersing toner particles in an insulating liquid in the presence of a basic dispersant; obtaining a toner particle dispersion liquid (B) by subjecting the obtained toner particle dispersion liquid (A) to centrifugal separation and removing a supernatant; obtaining a toner particle dispersion liquid (C) by controlling the toner particle dispersion liquid (B) as obtained, or after mixing with an insulating liquid, to have a solid content concentration of the toner particle dispersion liquid to 45 to 55 mass%; and obtaining a liquid developer by redispersing the toner particles in the toner particle dispersion liquid (C). The resin used contains a polyester having an acid value of 3 to 100 mgKOH/g. The solid content concentration of the toner particle dispersion liquid (A) is 10 to 40 mass%. The insulating liquid has a viscosity of 3 to 60 mPa s at 25°C.

Abstract translation: 要解决的问题：提供一种可用于液体显影系统中的装置的液体显影剂的制备方法，并且具有高的固体含量浓度，其具有粒径较小的颗粒（调色剂微粒）的少量 提供了包含分散在绝缘液体中的包含树脂和颜料的调色剂颗粒的液体显影剂的制备方法，其包括以下步骤：通过将调色剂颗粒分散在 绝缘液体在碱性分散剂存在下; 通过对得到的调色剂颗粒分散液（A）进行离心分离并除去上清液来获得调色剂颗粒分散液（B）; 通过控制得到的调色剂颗粒分散液（B）或与绝缘液体混合后得到调色剂颗粒分散液（C），使调色剂颗粒分散液的固体成分浓度为45〜55质量％。 并通过将调色剂颗粒再分散在调色剂颗粒分散液（C）中获得液体显影剂。 使用的树脂含有酸值为3〜100mgKOH / g的聚酯。 调色剂颗粒分散液（A）的固体成分浓度为10〜40质量％。 绝缘液体在25℃下的粘度为3〜60mPa·s。

公开(公告)号：JP2012098349A

公开(公告)日：2012-05-24

申请号：JP2010243738

申请日：2010-10-29

Applicant: Kao Corp ,  花王株式会社

Inventor： YAMADA TATSUYA ,  YOSHIMURA YOSHIO

IPC: G03G9/12

Abstract: PROBLEM TO BE SOLVED: To provide a production method of a liquid developer having a low viscosity and containing toner particles having a small particle diameter in a high concentration, by suppressing aggregation of the toner particles when a solvent for the toner particles dispersed in an aqueous dispersion medium is replaced by an insulating liquid.SOLUTION: The production method of a liquid developer containing toner particles dispersed in an insulating liquid includes: a step 1 of preparing an aqueous toner particle dispersion liquid comprising toner particles containing a resin and a pigment dispersed in an aqueous dispersion medium; a step 2 of mixing the aqueous toner particle dispersion liquid obtained in the step 1 with an aqueous dispersant; a step 3 of mixing the mixture obtained in the step 2 with an insulating liquid and an in-oil dispersant; and a step 4 of removing the aqueous dispersion medium from the mixture liquid obtained in the step 3. The aqueous dispersant comprises a polycarboxylic acid amine salt; the in-oil dispersant comprises a condensate of a polyimine and a carboxylic acid; the content of the toner particles in the liquid developer is from 10 to 40 wt.%; and the volume median particle diameter of the toner particles is from 0.03 to 2.5 μm.

Abstract translation: 待解决的问题：为了提供具有低粘度的液体显影剂的制备方法，并且当调色剂颗粒的溶剂分散时，通过抑制调色剂颗粒的聚集，含有高浓度的具有小粒径的调色剂颗粒 在水性分散介质中被绝缘液体代替。 包含分散在绝缘液体中的调色剂颗粒的液体显影剂的制备方法包括：制备包含分散在水分散介质中的树脂和颜料的调色剂颗粒的水性调色剂颗粒分散液的步骤1; 将步骤1中得到的含水调色剂颗粒分散液与水分散剂混合的步骤2; 将步骤2中获得的混合物与绝缘液体和油包水分散剂混合的步骤3; 以及从步骤3中得到的混合液中除去水分散介质的步骤4.水分散剂包括多元羧酸胺盐; 油包油分散剂包括聚亚胺和羧酸的缩合物; 液体显影剂中调色剂颗粒的含量为10〜40重量％。 调色剂颗粒的体积中值粒径为0.03-2.5μm。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2014142625A

公开(公告)日：2014-08-07

申请号：JP2013265916

申请日：2013-12-24

Applicant: Kao Corp ,  花王株式会社

Inventor： YAMADA TATSUYA ,  TAKADA SHINGO

IPC: G03G9/12 ,  G03G9/13

CPC classification number: G03G9/135 ,  G03G9/125

Abstract: PROBLEM TO BE SOLVED: To provide a liquid developer that has excellent dispersion stability and fixability even when a low-volatile insulating liquid is used.SOLUTION: A liquid developer is formed of toner particles containing resin and pigment being dispersed in an insulating liquid; and the insulating liquid contains an olefin having 12 to 18 carbon atoms in an amount of 10 mass% or more.

Abstract translation: 要解决的问题：提供即使使用低挥发性绝缘液体也具有优异的分散稳定性和定影性的液体显影剂。溶液：液体显影剂由含有分散在绝缘液体中的树脂和颜料的调色剂颗粒形成; 绝缘液含有碳原子数12〜18的烯烃，其含量为10质量％以上。

公开(公告)号：JP2014089319A

公开(公告)日：2014-05-15

申请号：JP2012239124

申请日：2012-10-30

Applicant: Kao Corp ,  花王株式会社

Inventor： IWASAKI TOSHIYA ,  YAMADA TATSUYA

IPC: G03G9/12 ,  G03G9/13

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method for efficiently manufacturing a liquid developer including toner particles with small particle diameters and having low viscosity.SOLUTION: A manufacturing method of a liquid developer having toner particles containing at least resin and pigment dispersed in an insulating liquid includes the following steps 1 to 3. The step 1: subjecting a kneaded material obtained by kneading a toner material containing at least resin and pigment to dry pulverization to obtain toner particles (A). The step 2: subjecting the toner particles (A) obtained in the step 1 to wet dispersion in the insulating liquid by using a medium type disperser to obtain a toner particle dispersion liquid (B). The step 3: further subjecting the toner particle dispersion liquid (B) obtained in the step 2 to wet dispersion by using the medium type disperser, wherein the toner particle dispersion liquid is supplied to the medium type disperser at a temperature lower than in the step 2 to be subjected to wet dispersion to obtain a toner particle dispersion liquid (C).

Abstract translation: 要解决的问题：提供一种有效制造包括具有小粒径和低粘度的调色剂颗粒的液体显影剂的制造方法。溶液：具有调色剂颗粒的液体显影剂的制造方法，所述调色剂颗粒至少含有分散在绝缘体中的树脂和颜料 液体包括以下步骤1至3.步骤1：将通过捏合至少含有树脂和颜料的调色剂材料获得的捏合材料干燥粉碎以获得调色剂颗粒（A）。 步骤2：使用中等型分散机使步骤1中获得的调色剂颗粒（A）使绝缘液体分散，得到调色剂颗粒分散液（B）。 步骤3：进一步使步骤2中得到的调色剂颗粒分散液（B）通过使用介质型分散机进行湿分散，其中调色剂颗粒分散液以低于步骤 2进行湿分散以获得调色剂颗粒分散液（C）。

公开(公告)号：JP2012002930A

公开(公告)日：2012-01-05

申请号：JP2010136234

申请日：2010-06-15

Applicant: Kao Corp ,  花王株式会社

Inventor： YAMADA TATSUYA ,  YOSHIMURA YOSHIO

IPC: G03G9/12

Abstract: PROBLEM TO BE SOLVED: To provide a liquid developer having a small particle diameter and low viscosity, and a manufacturing method of the same.SOLUTION: The manufacturing method of the liquid developer comprising toner particles dispersed in an insulating liquid includes; a step 1 of obtaining a mixture of pigment and resin by mixing a resin dispersion liquid comprising the resin dispersed in an aqueous dispersion medium with the pigment; a step 2 of obtaining an aqueous toner particle dispersion liquid by dispersing the mixture of the pigment and the resin obtained by the step 1 at 50-300 MPa using a high-pressure wet-type pulverizing machine; and a step 3 of mixing the aqueous toner particle dispersion liquid obtained by the step 2 with the insulating liquid and removing the aqueous dispersion medium. The liquid developer is obtained by the manufacturing method.

Abstract translation: 待解决的问题：提供一种具有小粒径和低粘度的液体显影剂及其制造方法。 解决方案：包含分散在绝缘液体中的调色剂颗粒的液体显影剂的制造方法包括： 通过将包含分散在水分散介质中的树脂的树脂分散液与颜料混合来获得颜料和树脂的混合物的步骤1; 使用高压湿式粉碎机将通过步骤1获得的颜料和树脂的混合物分散在50-300MPa的步骤2获得水性调色剂颗粒分散液; 以及将由步骤2获得的水性调色剂颗粒分散液与绝缘液混合并除去水性分散介质的步骤3。 通过该制造方法得到液体显影剂。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011242457A

公开(公告)日：2011-12-01

申请号：JP2010112294

申请日：2010-05-14

Applicant: Kao Corp ,  花王株式会社

Inventor： SHIRAI EIJI ,  YAMADA TATSUYA

IPC: G03G9/13

Abstract: PROBLEM TO BE SOLVED: To provide a binder resin for a wet developer excellent in both of wet pulverizing property and noncontact fixability of toner particles, and to provide toner particles containing the binder resin, and a wet developer containing the toner particles.SOLUTION: The binder resin for a wet developer contains a polyester obtained by condensation polymerization of an alcohol component and a carboxylic acid component containing a polycarboxylic acid having 3 or more valencies, in which the content of the polycarboxylic acid having 3 or more valencies in the carboxylic acid component is 40 to 100 mol%, and the polyester has a number average molecular weight of 400 to 2000. And there is also provided toner particles containing the binder resin and a wet developer containing the toner particles.

Abstract translation: 要解决的问题：提供一种在调色剂颗粒的湿粉碎性和非接触定影性方面优异的湿式显影剂的粘合剂树脂，以及提供含有粘合剂树脂的调色剂颗粒和含有调色剂颗粒的湿式显影剂。 解决方案：用于湿式显影剂的粘合剂树脂包含通过醇组分和含有具有3个或更多个价数的多元羧酸的羧酸组分的缩聚获得的聚酯，其中具有3个或更多个的多元羧酸的含量 羧酸成分中的价数为40〜100摩尔％，聚酯的数均分子量为400〜2000。另外，还提供含有粘合剂树脂的调色剂颗粒和含有调色剂颗粒的湿式显影剂。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2014142624A

公开(公告)日：2014-08-07

申请号：JP2013265915

申请日：2013-12-24

Applicant: Kao Corp ,  花王株式会社

Inventor： YAMADA TATSUYA ,  ITO HIROMI ,  HANADA YOKO

IPC: G03G9/12 ,  G03G9/13

CPC classification number: G03G9/0804 ,  G03G9/12 ,  G03G9/132 ,  G03G9/135 ,  G03G9/1355

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a liquid developer that has excellent dispersion stability and fixability of toner particles.SOLUTION: A manufacturing method of a liquid developer formed of toner particles containing a resin including polyester and pigment being dispersed in an insulating liquid includes: a step 1 of fusing and kneading resin and pigment, and pulverizing a resulting product to obtain toner particles; step 2 of dispersing the toner particles obtained in the step 1 in an insulating liquid in the presence of a basic dispersant to obtain a toner particle dispersant; and a step 3 of bringing the toner particle dispersant obtained in the step 2 to be subjected to wet pulverization to obtain a liquid developer. The basic dispersant is an amide compound obtained by the reaction of polyethyleneimine and polyester (D) obtained from self-condensation of 12-hydroxy stearic acid; the average number molecular weight of the polyethyleneimine is 1000 or more and 2600 or less; the number average molecular weight of the polyester (D) is 1000 or more and 2500 or less; the molar ratio of the polyester (D) to the polyethyleneimine (polyethyleneimine/polyester (D)) is 1/1 to 1/5; and the weight average molecular weight of the amide compound is 2000 or more and 7500 or less.

Abstract translation: 要解决的问题：提供具有优异的分散稳定性和调色剂颗粒的定影性的液体显影剂的制造方法。溶液：由包含聚酯和颜料的树脂的调色剂颗粒形成的液体显影剂的制造方法分散在绝缘 液体包括：熔融和捏合树脂和颜料的步骤1，并粉碎所得产物以获得调色剂颗粒; 在碱性分散剂的存在下将步骤1中获得的调色剂颗粒分散在绝缘液中的步骤2，得到调色剂颗粒分散剂; 和将步骤2中得到的调色剂颗粒分散体进行湿式粉碎以获得液体显影剂的步骤3。 碱性分散剂是通过由12-羟基硬脂酸的自缩合获得的聚乙烯亚胺和聚酯（D）反应得到的酰胺化合物; 聚乙烯亚胺的平均数分子量为1000以上且2600以下; 聚酯（D）的数均分子量为1000以上且2500以下; 聚酯（D）与聚乙烯亚胺（聚乙烯亚胺/聚酯（D））的摩尔比为1/1〜1/5; 酰胺化合物的重均分子量为2000以上且7500以下。