公开(公告)号：JP2009298846A

公开(公告)日：2009-12-24

申请号：JP2008152097

申请日：2008-06-10

Applicant: Kao Corp ,  花王株式会社

Inventor： NARITA MASAYUKI ,  ITO KOJI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide an ink set having high bleed resistance of a printed matter, allowing excellent printer head cleaning recovery based on good discharge characteristics, and including inks having superior storage stability.
SOLUTION: The ink set includes: one or more kinds of black inks containing a pigment and inorganic oxide particles; and one or more kinds of color inks containing water-soluble coloring agents. The inorganic oxide particles include secondary particles formed of a plurality of primary particles connected one another, and have an average association degree (an average secondary particle diameter/an average primary particle diameter) of 1.6-2.8.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种印刷品具有高耐渗透性的油墨组，能够根据良好的排出特性实现优异的打印头清洁回收，并且包括具有优良储存稳定性的油墨。 油墨组包括：含有颜料和无机氧化物颗粒的一种或多种黑色油墨; 和含有水溶性着色剂的一种或多种彩色油墨。 无机氧化物粒子包括由多个一次粒子形成的二次粒子，平均缔合度（平均二次粒径/平均一次粒径）为1.6〜2.8。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009091525A

公开(公告)日：2009-04-30

申请号：JP2007266161

申请日：2007-10-12

Applicant: Kao Corp ,  花王株式会社

Inventor： YOSHIDA HIROYUKI ,  SATO TAKAHIRO ,  NARITA MASAYUKI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To provide a water-based ink for inkjet recording superior in storage stability and curl suppression, and a curl-reducing method for printed matter using the same. SOLUTION: The water-based ink for inkjet recording contains cross-linked polymer particles containing a coloring agent, of which the water content is 60 wt.% or less and the content of an anionic group neutralized with a base is 0.5 mmol/g or more to 1 g of the cross-linked polymer; and the curl-reducing method for printed matter comprises printing with an inkjet recording apparatus by using the water-based ink. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种在储存稳定性和卷曲抑制方面优异的喷墨记录用水性油墨，以及使用该油墨的印刷物的卷曲缩小方法。 解决方案：用于喷墨记录的水性油墨包含含有着色剂的交联聚合物颗粒，其含水量为60重量％以下，用碱中和的阴离子基团的含量为0.5mmol g以上至1g交联聚合物; 并且用于印刷品的卷曲缩小方法包括通过使用水性油墨用喷墨记录装置进行印刷。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008266488A

公开(公告)日：2008-11-06

申请号：JP2007112852

申请日：2007-04-23

Applicant: Kao Corp ,  花王株式会社

Inventor： HIRAISHI TOKUJI ,  NARITA MASAYUKI ,  ITO KOJI ,  DOI YASUHIRO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D17/00

Abstract: PROBLEM TO BE SOLVED: To provide an aqueous dispersion for inkjet recording excellent in printing density, discharge properties and the recovery from clogging, to provide a water-based ink containing the dispersion and to provide a manufacturing method of the aqueous dispersion.
SOLUTION: Provided are: [1] an aqueous dispersion for inkjet recording incorporated with an aqueous dispersion of a self-dispersive pigment and polymer particles, wherein the electric conductivity of the aqueous dispersion of the polymer particles is ≤1 mS/cm; [2] a water-based ink containing the aqueous dispersion; [3] a manufacturing method of the aqueous dispersion of the polymer particles, which is one for manufacturing the aqueous dispersion of the polymer particles used by being mixed with the self-dispersive pigment and which has the process I of forming the aqueous dispersion of the polymer particles and the process II of putting the formed aqueous dispersion into contact with an adsorbent; and [4] an aqueous dispersion of the polymer particles formed by the above method.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供印刷密度，排出性能和堵塞回收性优异的喷墨记录用水性分散体，提供含有该分散体的水性油墨，并提供水性分散体的制造方法。 提供：[1]一种用于喷墨记录的水分散体，其包含自分散颜料和聚合物颗粒的水分散体，其中聚合物颗粒的水分散体的导电率为≤1mS/ cm ; [2]含有水分散体的水性油墨; [3]聚合物颗粒的水性分散体的制造方法，其是用于制造与自分散颜料混合使用的聚合物颗粒的水性分散体的制造方法，其具有形成水分散体的方法I 聚合物颗粒和使形成的水分散体与吸附剂接触的方法II; 和[4]通过上述方法形成的聚合物颗粒的水分散体。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008255170A

公开(公告)日：2008-10-23

申请号：JP2007096865

申请日：2007-04-02

Applicant: Kao Corp ,  花王株式会社

Inventor： NARITA MASAYUKI

IPC: C09D17/00 ,  B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide water-based ink for inkjet recording excellent in delivery reliability and ink filtration property while satisfying printing density, to provide a pigment dispersion used for the ink, and to provide a method for efficiently producing the pigment dispersion for inkjet recording.
SOLUTION: The production method of a pigment dispersion for ink jet recording has a step I of dispersing a self-dispersion type pigment having an amount of a carboxy group of 200-750 μmol/g at shearing stress of 0.01 MPa or higher, a step II of separating the dispersion to a supernatant and a precipitate by centrifugal-separating the dispersion obtained in the step I, and the step III of filtering the supernatant obtained in the step II. The pigment dispersion obtained by the production method and the water-based ink for inkjet recording containing the pigment dispersion are also provided.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供具有优异的输送可靠性和油墨过滤性能的喷墨记录用水性油墨，同时满足印刷密度，提供用于油墨的颜料分散体，并提供有效地制备颜料的方法 分散喷墨记录。 解决方案：用于喷墨记录的颜料分散体的制备方法具有步骤I，其在0.01MPa以上的剪切应力下分散具有200〜750μmol/ g的羧基量的自分散型颜料 ，通过离心分离步骤I中获得的分散体和步骤II中过滤上清液的步骤III，将分散体分离成上清液和沉淀物的步骤II。 还提供了通过制备方法获得的颜料分散体和用于包含颜料分散体的用于喷墨记录的水性油墨。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2006124557A

公开(公告)日：2006-05-18

申请号：JP2004316168

申请日：2004-10-29

Applicant: Kao Corp ,  花王株式会社

Inventor： NARITA MASAYUKI ,  TSURU ISAO ,  WAKABAYASHI SHIGEMI

IPC: B41J2/01 ,  B41M5/00 ,  C08F290/04 ,  C09D11/00 ,  C09D11/30

Abstract: PROBLEM TO BE SOLVED: To provide an aqueous dispersion for ink-jet printing, satisfying discharge stability and print density and giving excellent gloss when printing on a paper for exclusive use, and to provide a water-based ink.
SOLUTION: The aqueous dispersion for ink-jet printing is an aqueous dispersion of water-insoluble vinyl polymer particles containing colorants, wherein the water-insoluble vinyl polymer is a polymer having a constituent unit represented by formula (1), a constituent unit derived from a salt forming group-containing monomer (a) and a constituent unit derived from a styrene-based macromer (b) and/or a hydrophobic monomer (c) and the terminal of the main chain of the water-insoluble vinyl polymer has two or more hydroxy and/or one or more carboxy, and the water-based ink includes the dispersion. (Wherein, R
1 is H or methyl; and R
2 is a (substituted) 7-22C arylalkyl or a 6-22C aryl).
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供用于喷墨印刷的水性分散体，满足排出稳定性和印刷密度，并且在专用纸上打印时提供优异的光泽度并提供水性油墨。 喷墨印刷用水性分散体是含有着色剂的水不溶性乙烯基聚合物粒子的水分散体，其中，所述水不溶性乙烯系聚合物是具有式（1）所示构成单元的聚合物，成分 衍生自含有成盐基团的单体（a）的单元和衍生自苯乙烯基大分子单体（b）和/或疏水性单体（c）的构成单元和水不溶性乙烯基聚合物的主链的末端 具有两个或更多个羟基和/或一个或多个羧基，水性油墨包括分散体。 （其中R 1 是H或甲基; R 2 SP 2是（取代的）7-22C芳烷基或6-22C芳基）。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005023247A

公开(公告)日：2005-01-27

申请号：JP2003191864

申请日：2003-07-04

Applicant: Kao Corp ,  花王株式会社

Inventor： NARITA MASAYUKI ,  NAGASHIMA SHIGEKI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/326 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide a water-based ink for ink-jet recording having excellent ejection reliability and redispersibility.
SOLUTION: The water-based ink for ink-jet recording contains an aqueous dispersion of particles of a water-insoluble vinyl polymer containing a pigment. The water-insoluble vinyl polymer is a copolymer of at least (A) an alicyclic (meth)acrylate, (B) a macromer and (C) a monomer containing a salt-forming group.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供具有优异的喷射可靠性和再分散性的用于喷墨记录的水性油墨。 解决方案：用于喷墨记录的水性油墨含有含有颜料的不溶于水的乙烯基聚合物颗粒的水分散体。 水不溶性乙烯基聚合物是至少（A）脂环式（甲基）丙烯酸酯，（B）大分子单体和（C）含有成盐基团的单体的共聚物。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2011127065A

公开(公告)日：2011-06-30

申请号：JP2009289061

申请日：2009-12-21

Applicant: Kao Corp ,  花王株式会社

Inventor： NARITA MASAYUKI ,  HIRAISHI TOKUJI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To provide an aqueous dispersion for inkjet recording for providing aqueous ink for inkjet recording excellent in print density and effectiveness of suppressing strike through, aqueous ink for inkjet recording containing the aqueous dispersion, and a method for producing the aqueous dispersion for inkjet recording.
SOLUTION: The aqueous dispersion for inkjet recording contains anionic colored particles and a cationic dendrimer. The aqueous ink for inkjet recording contains the aqueous dispersion.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种用于喷墨记录的水性分散体，用于提供打印浓度和印刷密度优异的喷墨记录用水性油墨，以及含有水分散体的喷墨记录用水性油墨，以及用于生产 用于喷墨记录的水性分散体。 解决方案：用于喷墨记录的水性分散体含有阴离子着色颗粒和阳离子树枝状聚合物。 用于喷墨记录的水性油墨含有水分散体。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010265398A

公开(公告)日：2010-11-25

申请号：JP2009118468

申请日：2009-05-15

Applicant: Kao Corp ,  花王株式会社

Inventor： SHIMIZU YUSUKE ,  YOSHIDA HIROYUKI ,  NARITA MASAYUKI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322

Abstract: PROBLEM TO BE SOLVED: To provide an aqueous dispersion and aqueous ink for inkjet recording having high print density, excellent storage stability, and high chroma saturation and a method for producing the aqueous dispersion for inkjet recording. SOLUTION: (1) The aqueous dispersion for inkjet recording containing anionic polymer particles including a solid solution pigment containing dichloroquinacridone and cationic polymer, wherein a polymer constituting the polymer particles includes 30-80 wt.% of a constituent unit derived from benzyl methacrylate and/or benzyl acrylate, (2) the aqueous ink for inkjet recording containing the aqueous dispersion, and (3) the method for producing the aqueous dispersion for inkjet recording are provided. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供具有高印刷密度，优异的储存稳定性和高色度饱和度的喷墨记录用水性分散体和水性油墨以及用于制备用于喷墨记录的水分散体的方法。 （1）包含含有二氯喹吖啶酮和阳离子聚合物的固溶颜料的阴离子聚合物颗粒的喷墨记录用水分散体，其中构成聚合物颗粒的聚合物包含30-80重量％的衍生自苄基的构成单元 甲基丙烯酸酯和/或丙烯酸苄酯，（2）含有水分散体的喷墨记录用水性油墨，（3）喷墨记录用水性分散体的制造方法。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010126551A

公开(公告)日：2010-06-10

申请号：JP2008299491

申请日：2008-11-25

Applicant: Kao Corp ,  花王株式会社

Inventor： NARITA MASAYUKI ,  SATO TAKAHIRO ,  DOI YASUHIRO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a water dispersion for inkjet recording, having excellent filterability, preservation stability and print density, to provide the water dispersion produced by the method, and to provide a water-based ink for the inkjet recording, containing the water dispersion. SOLUTION: (1) The method for producing the water dispersion for the inkjet recording includes a step I for adding a cationic polymer to a water dispersion containing anionic polymer particles containing a coloring matter after regulating the pH of the water dispersion so as to be 8-12, and a step II for regulating the pH of the obtained water dispersion so as to be 7-9 by reducing the pH of the water dispersion. (2) The water dispersion for the inkjet recording is produced by the method. (3) The water-based ink for the inkjet recording contains the water dispersion. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种制造喷墨记录用水分散体的方法，具有优异的过滤性，保存稳定性和印刷密度，以提供通过该方法制备的水分散体，并提供一种水性油墨 喷墨记录，含有水分散体。 （1）喷墨记录用水分散体的制造方法包括在调节水分散体的pH后，将阳离子性聚合物添加到含有着色剂的阴离子性聚合物粒子的水分散体中的步骤I， 为8-12，以及通过降低水分散体的pH来调节所得水分散体的pH为7-9的步骤II。 （2）通过该方法制造喷墨记录用水分散体。 （3）喷墨记录用水性油墨含有水分散体。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009114274A

公开(公告)日：2009-05-28

申请号：JP2007286896

申请日：2007-11-05

Applicant: Kao Corp ,  花王株式会社

Inventor： HIRAISHI TOKUJI ,  NARITA MASAYUKI ,  ITO KOJI ,  NISHI ISAO ,  DOI YASUHIRO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324

Abstract: PROBLEM TO BE SOLVED: To provide water-based ink for inkjet recording excellent in print density and discharge characteristics, and an aqueous dispersion used for it.
SOLUTION: The aqueous dispersion comprises a pigment and polymer particles. The polymer particles are obtained when a monomer mixture containing 25-99 wt.% of an aromatic group-containing monomer is polymerized using a redox polymerization initiator. Viscosity (measured at 25°C by an E-type viscometer) of the emulsion (40 wt.% solid content) including the polymer particles is 1-80 mPas. The water-based ink for inkjet recording contains the aqueous dispersion.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供印刷密度和放电特性优异的喷墨记录用水性油墨和用于其的水性分散体。 水溶液分散体包含颜料和聚合物颗粒。 当使用氧化还原聚合引发剂聚合含有25-99重量％的含芳族基团的单体的单体混合物时，获得聚合物颗粒。 包含聚合物颗粒的乳液（40重量％固体含量）的粘度（通过E型粘度计在25℃下测量）为1-80mPas。 用于喷墨记录的水性油墨含有水分散体。 版权所有（C）2009，JPO＆INPIT