公开(公告)号：BRPI0511981A

公开(公告)日：2008-01-22

申请号：BRPI0511981

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

Abstract: Disclosed is an aqueous ink comprising at least water, a plurality of water-soluble organic solvents and a coloring material. The coloring material is a pigment, and, it contains a pigment particle having at least one ionic group bonded to a surface of the pigment particle directly or via another atomic group. The plurality of water-soluble organic solvents have a good medium or good mediums for the pigment and a poor medium or poor mediums for the pigment. The poor medium does not solvate perfectly or substantially the pigment. The ionic group undergoes perfectly or substantially no ionic dissociation in the poor medium. Also, among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method, the Ka value of the poor medium is maximum.

公开(公告)号：DE60303072T2

公开(公告)日：2006-08-24

申请号：DE60303072

申请日：2003-09-16

Applicant: CANON KK

Inventor： NITO YASUHIRO ,  MISHINA SHINYA ,  HAKAMADA SHINICHI ,  TAKADA YOICHI OHTA-KU ,  AKASAKA TOSHIFUMI ,  TSUJIMURA MASASHI

IPC: B41M5/00 ,  B41J2/21 ,  C09D11/00

Abstract: A reaction solution to be used for image recording with an ink containing a coloring material in a dissolved or dispersed state in order to achieve a high level of image density with stability, wherein the reaction solution contains a polyvalent metal ion and an organic solvent to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink, has a pH of 2 or higher, and has a buffering action for pH, wherein the buffering action means it can maintain pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.

公开(公告)号：AT328043T

公开(公告)日：2006-06-15

申请号：AT02018716

申请日：2002-08-21

Applicant: CANON KK

Inventor： SUZUKI MARIKO ,  KOIKE SHOJI ,  AOKI MAKOTO ,  SHIROTA KOROMO ,  TAKAYAMA HIDEKI ,  NITO YASUHIRO

IPC: B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/326 ,  C09D11/38

Abstract: Provided is an ink-jet ink suitable for high speed printing and reduced ink ejection amount, which ink comprise a water-insoluble coloring material dispersed in water with a resinous dispersant, glycerin, ethylene urea, and polyoxyethylene alkyl ether with HLB not lower than 13.

公开(公告)号：EP1899166A4

公开(公告)日：2010-01-20

申请号：EP06780815

申请日：2006-06-29

Applicant: CANON KK

Inventor： OSUMI KOICHI ,  SUGAMA SADAYUKI ,  HAKAMADA SHINICHI ,  SAKAI JUNICHI ,  NITO YASUHIRO ,  SUZUKI KATSUHIKO

IPC: B41J2/18

CPC classification number: B41J2/16523 ,  B41J2002/1742

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：EP1728645A4

公开(公告)日：2008-10-29

申请号：EP05721343

申请日：2005-03-16

Applicant: CANON KK

Inventor： NITO YASUHIRO ,  HAKAMADA SHINICHI ,  SHIROTA KOROMO ,  SHINJO KENJI ,  KURABAYASHI YUTAKA ,  TSUJIMURA MASASHI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328 ,  C09D11/40 ,  C09D11/54

CPC classification number: C09D11/30 ,  C09D11/54

Abstract: A liquid composition for use in a method for recording an image having a step of applying an ink containing a coloring material in a dissolved state or a dispersed state on a recording medium and a step of applying, on the above recording medium, a liquid composition destabilizing the dissolved state or a dispersed state of the above coloring material in the ink by the contact with the ink, characterized in that the above liquid composition comprises a multi-valent metal ion, water and water-soluble organic compounds 1 and 2, the liquid composition contains the above water-soluble organic compound 1 in a content X(%) of 15 mass % or more, and a content X(%) of the above water-soluble organic compound (1) in the liquid composition and a content Y(%) of the above water-soluble organic compound (2) in the liquid composition satisfy a specific relationship. The application of the above liquid composition on a recording medium allows the inhibition of the curling of the medium, while securing the good stability of discharge.

公开(公告)号：EP1767596A4

公开(公告)日：2007-09-26

申请号：EP05765442

申请日：2005-06-28

Applicant: CANON KK

Inventor： NITO YASUHIRO ,  SANADA MIKIO ,  SUGAMA SADAYUKI

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

CPC classification number: C09D11/40 ,  C09D11/54

Abstract: Disclosed is a cyan ink used for an ink set comprising four kinds of aqueous inks, namely a cyan, magenta, yellow and black ink, respectively containing water, a water-insoluble colorant and a plurality of water-soluble organic solvents including a good solvent and poor solvent for the water-insoluble colorant. The cyan ink is characterized in that the ratio B1/A1 between the poor solvent and the good solvent in the cyan ink is within a specific range; the water-soluble solvent having the largest Ka value among the water-soluble organic solvents is a poor solvent; and the ratio B/A between the poor solvent and the good solvent contained in an arbitrary aqueous ink other than the cyan ink in the ink set and the above-described ratio B1/A1 satisfy a certain relation. Such a cyan ink has a sufficiently large area factor even with a small amount of ink droplet, and enables to obtain an image having high image density. This cyan ink is also excellent in shelf life stability and bronzing resistance.

Abstract translation: 本发明公开了一种用于油墨组的青色油墨，所述油墨组包含分别含有水，水不溶性着色剂和多种包括良溶剂的水溶性有机溶剂的四种水性油墨，即青色，品红色，黄色和黑色油墨 和不溶于水的着色剂的不良溶剂。 青色墨水的特征在于青色墨水中不良溶剂和良溶剂之间的比率B1 / A1在特定范围内; 在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; 除油墨组中的青色油墨以外的任意水性油墨中包含的不良溶剂和良溶剂之间的比率B / A和上述比率B1 / A1满足一定关系。 这种青色墨水即使墨滴量少也具有足够大的面积系数，并且能够获得具有高图像浓度的图像。 这种青色墨水在保质期稳定性和耐烫金性方面也很出色。

公开(公告)号：EP1764395A4

公开(公告)日：2007-09-12

申请号：EP05755690

申请日：2005-06-28

Applicant: CANON KK

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

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

CPC classification number: C09D11/40 ,  C09D11/54

Abstract: An ink having a sufficiently large area factor even with a small amount of ink droplet and being excellent in shelf life stability is disclosed which enables to obtain an image having excellent image density. Specifically disclosed is a cyan ink used for an ink set comprising four kinds of aqueous inks, namely a cyan ink, a magenta ink, an yellow ink and a black ink, 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 cyan ink is characterized in that the total amount A1 (% by mass) of the good solvent contained in the cyan ink and the total amount B1 (% by mass) of the poor solvent contained in the cyan ink are in a ratio B1/A1 of not less than 0.5 and not more than 3.0; and the water-soluble solvent having the largest Ka value determined by the Bristow method among the water-soluble organic solvents is a poor solvent.

Abstract translation: 公开了即使墨滴量少也具有足够大的面积系数并且具有优异的保存期限稳定性的墨水，其能够获得具有优异图像密度的图像。 具体公开的是用于包含四种水性油墨即青色油墨，洋红色油墨，黄色油墨和黑色油墨的油墨组的青色油墨，所述油墨至少分别包含水，水不溶性着色剂和多种 包括用于水不溶性着色剂的良溶剂和用于水不溶性着色剂的不良溶剂的水溶性有机溶剂。 青色油墨的特征在于青色油墨中包含的良溶剂的总量A1（质量％）和青色油墨中包含的不良溶剂的总量B1（质量％）以B1 / A1不小于0.5且不大于3.0; 在水溶性有机溶剂中由布里斯托法确定的Ka值最大的水溶性溶剂是不良溶剂。

公开(公告)号：JP2003176431A

公开(公告)日：2003-06-24

申请号：JP2002241857

申请日：2002-08-22

Applicant: CANON KK

Inventor： SUZUKI MARIKO ,  SHIROTA KINU ,  AOKI ATSUSHI ,  NITO YASUHIRO ,  TAKAYAMA HIDEKI ,  KOIKE SHOJI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38 ,  C09D11/40

Abstract: PROBLEM TO BE SOLVED: To provide an ink set having good ink storage properties without interferring an ink feed mechanism, or the like, a recording unit capable of carrying out good image recording for a long period, and an inkjet recording head and to provide an inkjet recording method. SOLUTION: The ink set for inkjet recording has yellow, magenta and cyan ink. In the ink set, each ink comprises a coloring material, a dispersing agent, a water-soluble organic solvent and water, and the highest coloring material concentration (Pmax) and the lowest ink viscosity (Pmin) of the inks satisfy the formula Pmax/Pmin≥3, and when average value of viscosities of all inks is defined as ηave, the viscosity of the each ink falls in the range of ηave±15% and the highest concentration (Smax) and the lowest concentration (Smin) of solvent concentration satisfy the formula Smin/Smax≥0.6. The inkjet recording unit and an inkjet recording apparatus are each equipped with an ink storage part for separately storing each ink of the ink set and the head for discharging the ink. The inkjet recording method comprises using the ink set. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003160751A

公开(公告)日：2003-06-06

申请号：JP2002241856

申请日：2002-08-22

Applicant: CANON KK

Inventor： SHIROTA KINU ,  SUZUKI MARIKO ,  KOIKE SHOJI ,  TAKAYAMA HIDEKI ,  NITO YASUHIRO ,  AOKI ATSUSHI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  C09D11/40

Abstract: PROBLEM TO BE SOLVED: To provide a light ink excellent in light resistance and delivery properties over a long time even in a recording head using a thermal energy which is obtained by using a color pigment, an ink set of the light ink and a dark ink which does not destroy a color balance even after a long-time outdoor exposure, a recording unit, ink cartridge, inkjet recording method and recording device using the ink and the ink set. SOLUTION: This ink is characterized by containing a color material dispersed in an aqueous medium due to actions of a dispersing agent, having a concentration of the material in an ink of 1 mass % or less and a mass ratio of the dispersing agent and the material of 2/3 or more. COPYRIGHT: (C)2003,JPO