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    WATER BASE INK, METHOD OF INK JET RECORDING, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS AND METHOD OF IMAGE FORMATION
    5.
    发明专利
    WATER BASE INK, METHOD OF INK JET RECORDING, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS AND METHOD OF IMAGE FORMATION 未知

    公开(公告)号：CA2511100C

    公开(公告)日：2008-12-23

    申请号：CA2511100

    申请日：2003-12-26

    Applicant: CANON KK

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

    IPC: C09D11/00 ,  B41J2/01 ,  C09D11/02

    Abstract: A water-based ink of the present invention comprises water, a plurality of different water--soluble organic solvents, and a water-insoluble coloring material, wherein the above water-soluble organic solvents consist of a good solvent to the above water-insoluble coloring material and a poor solvent to the above water-insoluble coloring material, and the total amount (% by mass) of the good solvents in the ink is represented by A and the total amount (% by mass) of the poor solvent in the ink is represented by B, the ratio of A to B ranges from 10:5 to 10:30 both inclusive, and when the respective Ka values of the above water-soluble organic solvents are determined by the Bristow method and compared with each other, a water-soluble organic solvent having the greatest Ka value is the poor solvent. The pigment ink has a sufficiently large area factor even with a small amount of ink and provides an image of high OD.

    6.
    发明专利
    未知

    公开(公告)号：AT402229T

    公开(公告)日：2008-08-15

    申请号：AT04010199

    申请日：2004-04-29

    Applicant: CANON KK

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

    IPC: C09D11/00

    Abstract: An aqueous ink comprising at least water, a water-soluble organic solvent and a colorant. The colorant comprises a pigment containing a pigment particle having at least one ionic group bonded to a surface of the pigment particle directly or via another atomic group. The organic solvent undergoes completely or substantially no solvation with the pigment and the ionic group of the pigment particle undergoes completely or substantially no ion dissociation in the organic solvent.

    WATER BASE INK, METHOD OF INK JET RECORDING, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS AND METHOD OF IMAGE FORMATION
    7.
    发明专利
    WATER BASE INK, METHOD OF INK JET RECORDING, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS AND METHOD OF IMAGE FORMATION 未知

    公开(公告)号：CA2511100A1

    公开(公告)日：2004-07-22

    申请号：CA2511100

    申请日：2003-12-26

    Applicant: CANON KK

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

    IPC: C09D11/00 ,  B41J2/01

    Abstract: A water base ink comprising water, multiple water soluble organic solvents o f different types and a water insoluble color material, wherein the multiple water soluble organic solvents comprises a good solvent for the water insoluble color material and a poor solvent for the water insoluble color material, wherein providing that A represents the total amount (mass%) of go od solvent in the ink while B represents the total amount (mass%) of poor solve nt in the ink, the ratio of A:B is in the range of 10:5 to 10:30, and wherein upon comparison of the respective Ka values, determined in accordance with t he Bristow method, of the multiple water soluble organic solvents, the water soluble organic solvent exhibiting the maximum Ka value is a poor solvent. With respect to pigment inks, images of high OD having a satisfactorily larg e area factor even with a small amount of ink drop can be obtained.

    INK SET, INKJET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INKJET RECORDING APPARATUS, AND IMAGE FORMING METHOD
    8.
    发明公开
    INK SET, INKJET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INKJET RECORDING APPARATUS, AND IMAGE FORMING METHOD 有权
    油墨组，喷墨法，墨盒，喷墨设备和图像处理的

    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.

    WATER BASE INK, METHOD OF INK JET RECORDING, INK CARTRIDGE, RECORDING UNIT, NK JET RECORDING APPARATUS AND METHOD OF IMAGE FORMATION
    9.
    发明公开
    WATER BASE INK, METHOD OF INK JET RECORDING, INK CARTRIDGE, RECORDING UNIT, NK JET RECORDING APPARATUS AND METHOD OF IMAGE FORMATION 有权
    水性油墨，喷墨法，墨盒，打印单元，喷墨设备UNDBILDERZEUGUNGSVERFAHREN

    公开(公告)号：EP1577353A4

    公开(公告)日：2006-01-04

    申请号：EP03786364

    申请日：2003-12-26

    Applicant: CANON KK

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

    IPC: C09D11/00 ,  B41J2/01

    CPC classification number: B41J2/211 ,  B41J2/2107 ,  C09D11/32

    Abstract: A water-based ink of the present invention comprises water, a plurality of different water-soluble organic solvents, and a water-insoluble coloring material, wherein the above water-soluble organic solvents consist of a good solvent to the above water-insoluble coloring material and a poor solvent to the above water-insoluble coloring material, and the total amount (% by mass) of the good solvents in the ink is represented by A and the total amount (% by mass) of the poor solvent in the ink is represented by B, the ratio of A to B ranges from 10:5 to 10:30 both inclusive, and when the respective Ka values of the above water-soluble organic solvents are determined by the Bristow method and compared with each other, a water-soluble organic solvent having the largest Ka value is the poor solvent. The pigment ink has a sufficiently large area factor even with a small amount of ink and provides an image of high OD.

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