公开(公告)号：AT551405T

公开(公告)日：2012-04-15

申请号：AT05757791

申请日：2005-07-04

Applicant: CANON KK

Inventor： YOSHIZAWA JUN ,  SATO SHIN-ICHI ,  NAKAMURA KUNIHIKO ,  YAMASHITA TOMOHIRO

IPC: B41J2/01 ,  B41M5/00 ,  C09B56/04 ,  C09B56/08 ,  C09B67/44 ,  C09D11/00 ,  C09D11/328

Abstract: An ink-jet ink contains at least a coloring material and a specific water-soluble organic solvent and has both excellent coloring property and excellent humidity resistance. The coloring material exhibits a small (9 or less) color difference ”E value which is determined by a method including a series of specific steps and is represented as the square root of (L 1 - L 2 ) 2 + (a 1 - a 2 ) + (b 1 - b 2 ) 2 . The specific water-soluble organic solvent has an evaporation rate X smaller than that of water and a moisture absorptivity Y, the values of X and Y satisfying the relation of Y ‰ 2.8X + 10. The content of the specific water-soluble organic solvent is 50 mass % or more of the total amount of water-soluble organic solvents contained in the ink.

公开(公告)号：DE602008006290D1

公开(公告)日：2011-06-01

申请号：DE602008006290

申请日：2008-04-29

Applicant: CANON KK

Inventor： OKAMURA DAIJI ,  YOSHIZAWA JUN

IPC: B41J2/01 ,  B41M5/00 ,  C09B35/037 ,  C09B35/34 ,  C09D11/00 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  C09D11/40

公开(公告)号：AT483005T

公开(公告)日：2010-10-15

申请号：AT05758159

申请日：2005-07-04

Applicant: CANON KK

Inventor： YOSHIZAWA JUN ,  SATO SHIN-ICHI ,  NAKAMURA KUNIHIKO ,  OKAMURA DAIJI ,  YAMASHITA TOMOHIRO ,  JINNOU MASANORI

IPC: B41J2/01 ,  B41M5/00 ,  C09B47/26 ,  C09D11/00

Abstract: There is provided ink jet ink containing at least a coloring material, in which: the coloring material is a compound represented by the following general formula (I) or a salt thereof; a content (weight%) of the coloring material is 3.0 weight% or more with respect to a total weight of the ink jet ink; in a dispersion distance distribution, measured by a small-angle X-ray scattering method, of molecular aggregates in the ink jet ink whose coloring material concentration is adjusted to 3.0 weight%, a dispersion distance d 75 value corresponding to 75% of the distribution is 3.0 mass% is 6.50 nm or more and 7.10 nm or less:

公开(公告)号：AT481457T

公开(公告)日：2010-10-15

申请号：AT05758108

申请日：2005-07-04

Applicant: CANON KK

Inventor： TAKAYAMA HIDEKI ,  MAFUNE KUMIKO ,  OKAMURA DAIJI ,  SATO SHIN-ICHI ,  YOSHIZAWA JUN ,  NAKAMURA KUNIHIKO

IPC: B41J2/01 ,  B41M5/00 ,  C09B33/18 ,  C09B35/64 ,  C09D11/00 ,  C09D11/322 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: The present invention aims to provide an ink jet black ink which can improve weatherability, optical density and sticking recovery property of nozzles of a recording head. According to the present invention, an ink jet black ink is provided which comprises at least a coloring material and a water-soluble organic solvent, wherein the coloring material is a compound represented by the following general formula (I) or a salt thereof, and the water-soluble organic solvent is a water-soluble organic solvent having a relative permittivity of from 30.0 or more to less than 70.0 at 20°C and capable of dissolving the compound represented by the following general formula (I) or a salt thereof, by 1.0 mass% or more at 25°C, and is in a content of 50.0 mass% or more with respect to the total content of all water-soluble organic solvents contained in the ink jet black ink.

公开(公告)号：AT481456T

公开(公告)日：2010-10-15

申请号：AT05758158

申请日：2005-07-04

Applicant: CANON KK

Inventor： NAKAMURA KUNIHIKO ,  SATO SHIN-ICHI ,  YOSHIZAWA JUN ,  MAFUNE KUMIKO ,  TAKAYAMA HIDEKI ,  OKAMURA DAIJI

IPC: B41J2/01 ,  B41M5/00 ,  C09B33/18 ,  C09B33/28 ,  C09B56/08 ,  C09D11/00 ,  C09D11/328 ,  C09D11/38 ,  C09D11/40

Abstract: It is an object of the present invention to provide a black ink for an ink jet which possesses preferable color as a black ink for an ink jet, can attain high ozone resistance, high image density and sticking recovery property, and can suppress the decomposition of the compound represented by the general formula (I) or salt thereof during long-term storage. According to the present invention, there is provided a black ink for an ink jet characterized by comprising at least a compound represented by the following general formula (I) or a salt thereof, characterized in that the black ink comprises at least one moisture-retaining nitrogen compound, and the pH of the ink and the pH of the ink after storing for 10 days in an environment at a temperature of 60°C are 9.5 or less.

公开(公告)号：BRPI0512898A

公开(公告)日：2008-04-15

申请号：BRPI0512898

申请日：2005-07-04

Applicant: CANON KK

Inventor： TAKAYAMA HIDEKI ,  MAFUNE KUMIKO ,  OKAMURA DAIJI ,  SATO SHI-ICHI ,  YOSHIZAWA JUN ,  NAKAMURA KUNIHIKO

IPC: B41J2/01 ,  B41M5/00 ,  C09B33/18 ,  C09B35/64 ,  C09D11/00 ,  C09D11/322 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: The present invention aims to provide an ink jet black ink which can improve weatherability, optical density and sticking recovery property of nozzles of a recording head. According to the present invention, an ink jet black ink is provided which comprises at least a coloring material and a water-soluble organic solvent, wherein the coloring material is a compound represented by the following general formula (I) or a salt thereof, and the water-soluble organic solvent is a water-soluble organic solvent having a relative permittivity of from 30.0 or more to less than 70.0 at 20°C and capable of dissolving the compound represented by the following general formula (I) or a salt thereof, by 1.0 mass% or more at 25°C, and is in a content of 50.0 mass% or more with respect to the total content of all water-soluble organic solvents contained in the ink jet black ink.

公开(公告)号：EP1783181A4

公开(公告)日：2008-10-08

申请号：EP05768889

申请日：2005-07-28

Applicant: CANON KK

Inventor： YOSHIZAWA JUN ,  SATO SHIN-ICHI ,  NAKAMURA KUNIHIKO

IPC: B41J2/01 ,  B41M5/00 ,  C09B5/14 ,  C09B47/20 ,  C09B47/26 ,  C09B56/04 ,  C09D11/00 ,  C09D11/328

CPC classification number: C09D11/32 ,  C09D11/40

Abstract: Disclosed is an inkjet yellow ink which is balanced in color fading due to light and environmental gases, and can be used together with an ink having excellent light resistance and environmental gas resistance. Specifically disclosed is an inkjet yellow ink used for forming an image together with a yellow ink cyan ink containing, as a colorant, a compound represented by the general formula (1) or a compound represented by the general formula (2). The inkjet yellow ink is characterized by containing, as a colorant, at least one substance selected from the group A below and at least one substance selected from the group B below. Group A: C.I. direct yellow 132, C.I. direct yellow 173 Group B: C.I. direct yellow 142, C.I. direct yellow 86, a compound represented by the general formula (3)

公开(公告)号：EP1767592A4

公开(公告)日：2007-12-12

申请号：EP05758023

申请日：2005-07-04

Applicant: CANON KK

Inventor： OKAMURA DAIJI ,  SATO SHIN-ICHI ,  YOSHIZAWA JUN ,  NAKAMURA KUNIHIKO ,  YAMASHITA TOMOHIRO ,  JINNOU MASANORI

IPC: B41J2/01 ,  B41M5/00 ,  C09B47/26 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

CPC classification number: C09B47/26 ,  C09D11/328

Abstract: An ink jet ink is disclosed which includes water, a water-soluble organic solvent and a coloring material and has excellent properties. The coloring material is a specific phthalocyanine derivative and is contained in a specific amount in the ink. The water-soluble organic solvent includes a specific amount of 2-pyrrolidone. In addition, a d 75 value is in a specific range where the d 75 value corresponds to 75% of a dispersion distance distribution, measured by a small angle X-ray scattering method, of molecular aggregates in the ink jet ink whose coloring material concentration is adjusted to 0.5 mass%.

公开(公告)号：EP1767595A4

公开(公告)日：2007-12-05

申请号：EP05758159

申请日：2005-07-04

Applicant: CANON KK

Inventor： YOSHIZAWA JUN ,  SATO SHIN-ICHI ,  NAKAMURA KUNIHIKO ,  OKAMURA DAIJI ,  YAMASHITA TOMOHIRO ,  JINNOU MASANORI

IPC: B41J2/01 ,  B41M5/00 ,  C09B47/26 ,  C09D11/00

CPC classification number: C09B47/26 ,  C09D11/328

Abstract: An ink for ink jet recording that has excellent color development, has a high level of environmental gas resistance, and, further, can yield images having excellent bronze resistance. The ink comprises at least a colorant. The colorant is a compound represented by general formula (I) or its salt. The content (% by mass) of the colorant is not less than 3.0% by mass based on the total mass of the ink for ink jet recording. The dispersion distance d75 value, occupying 75% of a dispersion distance distribution of molecular aggregates in an ink prepared in such a manner that the concentration of the colorant in the ink forink jet recording is 3.0% by mass, as determined by a small angle X-ray scattering method is not less than 6.50 nm to not more than 7.10 nm.