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1. 发明专利

JP2009249430A Modified inorganic pigment, method for producing modified inorganic pigment sol, inkjet recording unit and method for producing inkjet recording unit 审中-公开
标题翻译：改性无机颜料，生产改性无机颜料溶液的方法，喷墨记录单元和用于生产喷墨记录单元的方法
公开(公告)号：JP2009249430A
公开(公告)日：2009-10-29
申请号：JP2008096341
申请日：2008-04-02
申请人： Oji Paper Co Ltd , 王子製紙株式会社
发明人： MAEDA MASAYO , TAJIRI KOZO , RUFFIEUX VINCENT , SCHAER MEINRAD
IPC分类号： C09C3/10 , B01J13/00 , B41J2/01 , B41M5/00 , B41M5/50 , B41M5/52 , C09C1/00 , C09C1/28 , C09C3/04 , C09C3/06 , C09C3/08 , C09C3/12
摘要： PROBLEM TO BE SOLVED: To provide a modified inorganic pigment especially useful for an inkjet recording unit providing silver salt photographic gloss, hardly causing bleeding of an image and having excellent light resistance. SOLUTION: The modified inorganic pigment is obtained by modifying the surface of an inorganic pigment with a treating liquid containing a hydrophilic resin having ≥4.0 meq/g cation equivalent, an amino group-containing silane coupling agent, an organic acid and an inorganic acid. The method for producing the modified inorganic pigment sol includes dispersing the inorganic pigment in the treating liquid obtained by dissolving the amino group-containing silane coupling agent in a polar solvent, adding the organic acid and the inorganic acid thereto, and further adding at least one hydrophilic resin selected from a polyvinylamine, a polyallylamine, a poly(diallyldimethylammonium chloride) and a polymer containing a 5-membered cyclic amidine structure. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供特别适用于提供银盐照相光泽的喷墨记录单元的改性无机颜料，几乎不引起图像渗色并具有优异的耐光性。解决方案：改性无机颜料是通过用含有≥4.0meq/ g阳离子当量的亲水性树脂，含氨基的硅烷偶联剂，有机酸和有机酸的处理液改性无机颜料的表面而获得的无机酸。改性无机颜料溶胶的制造方法包括将无机颜料分散在通过将含氨基的硅烷偶联剂溶解在极性溶剂中而得到的处理液中，向其中加入有机酸和无机酸，并进一步添加至少一种选自聚乙烯胺，聚烯丙胺，聚（二烯丙基二甲基氯化铵）和含有5元环脒结构的聚合物的亲水性树脂。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2009241290A Inkjet recording sheet 审中-公开
标题翻译：喷墨记录表
公开(公告)号：JP2009241290A
公开(公告)日：2009-10-22
申请号：JP2008088010
申请日：2008-03-28
申请人： Oji Paper Co Ltd , 王子製紙株式会社
发明人： KOBAYASHI MITSURU , NISHIMURA MASAKI , RUFFIEUX VINCENT , SCHAER MEINRAD
IPC分类号： B41M5/00 , B41J2/01 , B41M5/50 , B41M5/52
摘要： PROBLEM TO BE SOLVED: To provide an inkjet recording sheet excellent in glossiness, ink absorbing properties, image quality, long term storing properties, and especially excellent in image storing properties under high temperature and high humidity conditions. SOLUTION: In the inkjet recording sheet having at least one layer of ink receiving layer comprising an inorganic fine particle and a binder on a substrate, the inkjet recording sheet is characterized by containing a surface modified inorganic fine particle A with a mean primary particle diameter of ≤30 nm, and the surface of which is modified with at least one of amino-organosilane, and a surface modified inorganic fine particle B with a mean primary particle diameter of ≤30 nm, and the surface of which is modified with at least one of cationic polymer. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供在高温高湿条件下，光泽度，油墨吸收性，图像质量，长期保存性能以及特别优异的图像保存性能优异的喷墨记录纸。解决方案：在具有至少一层包含无机细颗粒和粘合剂的油墨接收层的喷墨记录纸中，喷墨记录纸的特征在于含有表面改性的无机细颗粒A和平均初级粒径≤30nm，其表面用氨基有机硅烷和平均一次粒径≤30nm的表面改性无机细颗粒B中的至少一种进行改性，其表面用阳离子聚合物中的至少一种。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2009234875A Method for producing surface-modified silica dispersion and method for producing inkjet recording medium 审中-公开
标题翻译：用于生产表面改性的二氧化硅分散体的方法和用于生产喷墨记录介质的方法
公开(公告)号：JP2009234875A
公开(公告)日：2009-10-15
申请号：JP2008085313
申请日：2008-03-28
申请人： Oji Paper Co Ltd , 王子製紙株式会社
发明人： MINAMI TAKEHIRO , ISHIDA TATSUJI , OKAWA AKANE , SUZUKI SHIGERU , RUFFIEUX VINCENT , SCHAER MEINRAD
IPC分类号： C01B33/18 , B41J2/01 , B41M5/00 , B41M5/50 , B41M5/52 , C01B33/141
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a surface-modified silica dispersion suitable for producing an inkjet recording medium having a good ink receiving layer surface by fast drying, and a method for producing an inkjet recording medium. SOLUTION: The method for producing the surface-modified silica dispersion includes bringing a treatment liquid containing lactic acid and at least one aminoorganosilane into contact with amorphous silica to modify the silica surface. The method for producing the inkjet recording medium includes applying a coating liquid for an ink receiving layer containing the surface-modified silica dispersion on a support and drying it to form an ink receiving layer. Lactic acid makes it possible to prepare a coating liquid suitable for obtaining a large dried film thickness by fast drying without causing flocculation in the coating liquid for an ink receiving layer. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决问题的方法：提供适用于通过快干制备具有良好的油墨接收层表面的喷墨记录介质的表面改性二氧化硅分散体的制造方法和喷墨记录介质的制造方法。解决方案：用于制备表面改性二氧化硅分散体的方法包括使含有乳酸和至少一种氨基有机硅烷的处理液与无定形二氧化硅接触以改变二氧化硅表面。制造喷墨记录介质的方法包括将含有表面改性二氧化硅分散体的油墨接收层用涂布液涂布在载体上并干燥以形成油墨接收层。乳酸使得可以通过快速干燥来制备适于获得大的干燥膜厚度的涂布液，而不会在油墨接收层的涂布液中引起絮凝。版权所有（C）2010，JPO＆INPIT

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