公开(公告)号：EP1726449A4

公开(公告)日：2014-04-09

申请号：EP05755733

申请日：2005-06-28

Applicant: CANON KK

Inventor： HAKAMADA SHINICHI ,  SANADA MIKIO ,  IMAI TAKASHI ,  NITO YASUHIRO ,  SUGAMA SADAYUKI

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

CPC classification number: B41J2/2107 ,  C09D11/30 ,  C09D11/40 ,  C09D11/54

公开(公告)号：EP1953200A4

公开(公告)日：2008-12-24

申请号：EP06833099

申请日：2006-11-15

Applicant: CANON KK

Inventor： SANADA MIKIO ,  MORIBE KENJI

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

CPC classification number: C09D11/322 ,  C09D11/30

公开(公告)号：EP1762598A4

公开(公告)日：2007-10-17

申请号：EP05755744

申请日：2005-06-28

Applicant: CANON KK

Inventor： HAKAMADA SHINICHI ,  IMAI TAKASHI ,  SANADA MIKIO ,  NITO YASUHIRO ,  IWATA TETSU ,  SUGAMA SADAYUKI

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

CPC classification number: C09D11/40 ,  C09D11/54

Abstract: Disclosed is an aqueous ink containing water, a water-insoluble colorant and a plurality of water-soluble organic solvents. The water-soluble organic solvents contain a good solvent and poor solvent for the water-insoluble colorant in a specific ratio, and the water-soluble solvent having the largest Ka value among the water-soluble organic solvents is a poor solvent. When such an aqueous ink is in contact with a specific reactive liquid, the dissolution state or dispersion state of the water-insoluble colorant in the ink is destabilized, thereby having a sufficiently large area factor even with a small amount of ink droplet and enabling to obtain an image which is excellent in the image density, bleed resistance and fixability. This aqueous ink is also excellent in shelf life stability.

公开(公告)号：EP2031028A4

公开(公告)日：2014-03-12

申请号：EP07744450

申请日：2007-05-24

Applicant: CANON KK

Inventor： MAFUNE KUMIKO ,  SANADA MIKIO ,  MORIBE KENJI ,  WATANABE TOMONARI ,  OKAMURA DAIJI ,  KUDO SATOSHI ,  NAKAMURA FUMIHARU

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

CPC classification number: C09D11/322

Abstract: Provided herein is an aqueous ink, which is excellent in both image density and fixing ability irrespective of the kind of a recording medium even when the volume of an ink droplet is small and has such excellent properties that white stripes are not caused even when high-speed recording is conducted. The aqueous ink comprises at least water, a water-soluble organic solvent, a water-insoluble coloring material, a surfactant and a poor medium for the water-insoluble coloring material and/or a salt. The dynamic surface tension of the aqueous ink at a lifetime of 50 milliseconds determined by a maximum bubble pressure method is higher than 47 mN/m, and the dynamic surface tension at a lifetime of 5,000 milliseconds determined by the maximum bubble pressure method is 38 mN/m or lower.

Abstract translation: 这里提供的是一种水性油墨，即使在油墨体积小的情况下，即使在高分辨率的情况下也不会产生白色条纹，其图像浓度和定影能力都优异，而与记录介质的种类无关。 进行速度记录。 水性油墨至少包含水，水溶性有机溶剂，水不溶性着色材料，表面活性剂和用于水不溶性着色材料和/或盐的不良介质。 通过最大气泡压力法确定的50毫秒寿命的水性油墨的动态表面张力高于47mN / m，通过最大气泡压力法确定的5000毫秒的寿命的动态表面张力为38mN / m以下。

公开(公告)号：EP1748059A4

公开(公告)日：2009-06-10

申请号：EP05739036

申请日：2005-05-10

Applicant: CANON KK

Inventor： TOKUDA YUI ,  WATANABE TOMONARI ,  SANADA MIKIO ,  OGASAWARA MASASHI

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

CPC classification number: C09D11/40

Abstract: Disclosed is an ink set (A) wherein a plurality of aqueous inks (a) are combined to be used together with an aqueous ink (B) containing a water-insoluble coloring material. Each aqueous ink (a) constituting the ink set (A) contains one or more water-soluble organic solvents which are poor solvents for the water-insoluble coloring material of the aqueous ink (B), and the vapor pressure of at least one of the water-soluble organic solvents contained in each aqueous ink (a) at 20˚C is lower than the vapor pressure of water at 20˚C. When such an ink set is used for combining a plurality of aqueous inks so as to form a full color image wherein different color regions are adjacent to one another, the resulting image can be suppressed in color mixture (bleeding) at the boundaries between different color regions.

公开(公告)号：EP1834784A4

公开(公告)日：2008-03-12

申请号：EP05822842

申请日：2005-12-27

Applicant: CANON KK

Inventor： SANADA MIKIO ,  MATSUMOTO NOBUYUKI ,  KOITABASHI NORIBUMI

IPC: B41J2/165

CPC classification number: B41J2/16552 ,  C09D11/38

Abstract: A liquid for head fed to efficiently eliminate any ink residue, etc. adhering to the surface of inkjet head furnished with a discharge orifice for discharging a colorant-containing ink. When a nonvolatile solvent, such as glycerol, is used as the liquid for head, the nonvolatile solvent due to moisture absorption exhibits an extremely large mass change, thereby causing the amount of liquid fed to disperse. As for this problem, it has been found that reduction of mass change as compared with that in the moisture absorption in the nonvolatile solvent alone can be realized by premixing water in the nonvolatile solvent. Thus, a mixture of nonvolatile solvent and water made at appropriate given ratio is used as the liquid for head.

公开(公告)号：EP1834783A4

公开(公告)日：2008-03-12

申请号：EP05822525

申请日：2005-12-27

Applicant: CANON KK

Inventor： SANADA MIKIO ,  MATSUMOTO NOBUYUKI ,  KOITABASHI NORIBUMI

IPC: B41J2/165

CPC classification number: B41J2/16538

Abstract: A method for cleaning the surface (ejection surface) of an inkjet head provided with an ink ejection opening, in which the cleaning is made by supplying head liquid to the ejection surface and performing wiping operation. In the method, the relative relationship of surface tension between the ejection surface, ink, and the head liquid is appropriately determined and an ink residue is efficiently and reliably removed from the ejection surface to achieve sufficient cleanliness. When the head liquid is supplied to the ink residue on the ejection surface, they are mixed and the ink residue is taken into the head liquid. Because both the ink and the head liquid used have higher surface tension than the ejection surface, wetness of the dissolved ink residue on the ejection surface is reduced and the dissolved ink residue is smoothly moved by wiping operation.

公开(公告)号：EP1764397A4

公开(公告)日：2007-09-12

申请号：EP05755859

申请日：2005-06-28

Applicant: CANON KK

Inventor： TSUJIMURA MASASHI ,  SANADA MIKIO ,  NITO YASUHIRO ,  SUGAMA SADAYUKI

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

CPC classification number: C09D11/40 ,  C09D11/322

Abstract: Disclosed is a cyan ink used for an ink set comprising a plurality of aqueous inks respectively containing at least water, a water-insoluble colorant and a plurality of water-soluble organic solvents including a good solvent for the water-insoluble colorant and a poor solvent for the water-insoluble colorant. The ratio between the good solvent and the poor solvent contained in the cyan ink is within a specific range, and the water-soluble solvent having the largest Ka value among the water-soluble organic solvents is a poor solvent. In addition, the ratio between the good solvent and the poor solvent contained in an arbitrary aqueous ink other than the cyan ink in the ink set and the ratio between the good solvent and the poor solvent in the cyan ink satisfy a certain relation.

Abstract translation: 本发明公开了一种用于墨水组的青色墨水，其包含多种水性墨水，所述墨水分别至少包含水，水不溶性着色剂和多种水溶性有机溶剂，所述水溶性有机溶剂包括用于水不溶性着色剂和不良溶剂的良溶剂 用于不溶于水的着色剂。 青色油墨中包含的良溶剂和不良溶剂之间的比例在特定范围内，并且水溶性有机溶剂中具有最大Ka值的水溶性溶剂是不良溶剂。 另外，油墨组中的青色油墨以外的任意的水性油墨中所含的良溶剂与不良溶剂的比例以及青色油墨中的良溶剂与不良溶剂的比例满足一定关系。

公开(公告)号：EP1764396A4

公开(公告)日：2009-06-10

申请号：EP05755739

申请日：2005-06-28

Applicant: CANON KK

Inventor： KITAMURA YUI ,  SANADA MIKIO ,  TAKIZAWA YOSHIHISA ,  OGASAWARA MASASHI ,  WATANABE TOMONARI ,  IMAI TAKASHI ,  NITO YASUHIRO ,  IWATA TETSU ,  HAKAMADA SHINICHI ,  SUGAMA SADAYUKI

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

CPC classification number: C09D11/326

Abstract: Disclosed is an aqueous ink containing water, a plurality of water-soluble organic solvents and a colorant. The colorant is composed of a pigment, and at least one ionic group is bonded to the surface of a pigment particle directly or via an other atomic group. The water-soluble organic solvents contain a good solvent and a poor solvent for the pigment. The poor solvent does not solvate the pigment at all or does not substantially solvate the pigment. The ionic group is not dissociated at all or is not substantially dissociated in the poor solvent. Furthermore, a poor solvent has the largest Ka value, which is determined by the Bristow method, among the water-soluble organic solvents.

公开(公告)号：EP1839870A4

公开(公告)日：2008-03-12

申请号：EP05822432

申请日：2005-12-27

Applicant: CANON KK

Inventor： NAGAI SOUICHI ,  SANADA MIKIO ,  MATSUMOTO NOBUYUKI ,  KOITABASHI NORIBUMI

IPC: B41J2/165

CPC classification number: B41J2/16552 ,  B41J2/16538

Abstract: A method for cleaning the surface (ejection surface) of an ink jet head provided with an ink ejection opening by supplying a head liquid to the ejection surface and performing wiping operation. In the method, ink residue on the ejection surface is removed efficiently and surely, thus sufficient cleaning is performed. Application and stirring/mixing of the head liquid are carried out efficiently by performing first wiping operation such that the body portion of a wiper (9A) slides on the ejection surface while bending the wiper significantly. Mixture of the head liquid and the ink residue is then scraped efficiently by performing second wiping operation such that an edge portion at the forward end of a wiper (9B) slides on that surface.

Abstract translation: 一种通过向喷射表面供应头液并执行擦拭操作来清洁设置有墨喷射开口的喷墨头的表面（喷射表面）的方法。 在该方法中，喷射表面上的墨水残余物被有效且可靠地去除，因此进行了充分的清洁。 通过进行第一擦拭操作来有效地进行头液的施加和搅拌/混合，使得擦拭器（9A）的主体部分在显着弯曲擦拭器的同时在喷射表面上滑动。 然后通过执行第二擦拭操作使得头部液体和墨水残余物的混合物被有效地刮擦，使得擦拭器（9B）的前端处的边缘部分在该表面上滑动。