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.

公开(公告)号：DE60024553T2

公开(公告)日：2006-07-20

申请号：DE60024553

申请日：2000-09-29

Applicant: CANON KK

Inventor： TAKAHASHI KATSUHIKO ,  KURABAYASHI YUTAKA ,  EGUCHI TAKEO ,  OGASAWARA MASASHI ,  ASAKI NORIYASU

IPC: C09D11/00 ,  B41J2/01

公开(公告)号：DE60203027T2

公开(公告)日：2006-01-12

申请号：DE60203027

申请日：2002-06-14

Applicant: CANON KK

Inventor： OGASAWARA MASASHI ,  TOCHIHARA SHINICHI ,  TAKAHASHI KATSUHIKO

IPC: C09D11/00

Abstract: An ink set for ink-jet recording that comprises a plurality of inks containing coloring materials insoluble in water to form a high quality ink-jet recording image is provided. The water-based ink set for ink-jet recording comprises a black ink and a color ink, wherein the black ink contains a carbon black as a coloring material having a volume average particle diameter determined by dynamic light scattering of not less than 50 nm, the color ink contains a pigment as a coloring material having a volume average particle diameter determined by dynamic light scattering of not more than 60 nm, and an accumulative 90% particle diameter of volume particle size distribution of not more than 100 nm, the volume average particle diameter of the carbon black of the black ink is larger than the volume average particle diameter of the pigment of the color ink, and the black ink has a surface tension higher than that of the color ink.

公开(公告)号：DE69917696T2

公开(公告)日：2005-07-07

申请号：DE69917696

申请日：1999-03-02

Applicant: CANON KK

Inventor： MAFUNE KUMIKO ,  KURABAYASHI YUTAKA ,  SHIROTA KOROMO ,  OGASAWARA MASASHI

IPC: C09D11/00

公开(公告)号：DE69624854D1

公开(公告)日：2003-01-02

申请号：DE69624854

申请日：1996-02-12

Applicant: CANON KK

Inventor： SATO SHINICHI ,  MORIYAMA JIRO ,  KURABAYASHI YUTAKA ,  OGASAWARA MASASHI

IPC: B41J2/21 ,  B41J2/05 ,  B41J2/01

Abstract: Disclosed herein is an ink-jet recording process for forming an image by applying an ink to a recording medium in accordance with an ink-jet recording system, comprising the steps of: (A) applying an ink containing a coloring material to the recording medium in accordance with the ink-jet recording system; and (B) applying a liquid composition different from the ink to an ink-applying region of the recording medium in accordance with the ink-jet recording system, wherein the liquid composition is applied in an amount less than 50 % by volume of the amount of the ink to be applied to the ink-applying area.

公开(公告)号：CA2212352C

公开(公告)日：2001-04-24

申请号：CA2212352

申请日：1997-08-01

Applicant: CANON KK

Inventor： TAKAHASHI KATSUHIKO ,  SATO SHINICHI ,  SANADA MIKIO ,  TAKIZAWA YOSHIHISA ,  ONO ERIKO ,  YAMAMOTO MAYUMI ,  MISHINA SHINYA ,  HATTORI YOSHIFUMI ,  OGASAWARA MASASHI ,  KURABAYASHI YUTAKA

IPC: B41M5/00 ,  B41M5/52 ,  C09D11/00 ,  B41J2/21 ,  B41J2/525

Abstract: Provided is an ink-jet recording process for forming a color image on a recording medium using a liquid formulation and a color ink in combination, wherein said liquid formulation contains a cationic polymer having a weight-average molecular weight in the range of from 400 to 1,400, and said liquid formulation and said ink are each ejected from a recording head having an ink ejection volume per dot of from 2 to 25 picolitters.

公开(公告)号：AU2003296153B2

公开(公告)日：2010-05-27

申请号：AU2003296153

申请日：2003-12-26

Applicant: CANON KK

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

IPC: C09D11/00

公开(公告)号：CA2565700A1

公开(公告)日：2006-01-05

申请号：CA2565700

申请日：2005-06-28

Applicant: CANON KK

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

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：DE69732680T2

公开(公告)日：2005-07-28

申请号：DE69732680

申请日：1997-07-11

Applicant: CANON KK

Inventor： OGASAWARA MASASHI ,  SUGAMA SADAYUKI ,  ISHINAGA HIROYUKI ,  KASHINO TOSHIO ,  NAGASHIMA AKIRA ,  ASAKAWA YOSHIE

IPC: B41J2/14 ,  B41J2/05

Abstract: Disclosed herein is a liquid discharging method, comprising using a liquid-discharge head equipped with a discharge opening from which a liquid is discharged, a first region to which a first liquid is supplied, a bubble-generating region containing a second liquid and generating bubbles in the second liquid, and a movable member which is displaceable between a first position opposite to the bubble-generating region and a second position within the first region and apart from the bubble-generating region and has a support part more upstream than its free end, in which the movable member is displaced from the first position toward the second position with the generation of a bubble in the bubble-generating region, and the bubble is guided to the discharge opening by the movable member, wherein the first liquid and the second liquid have no compatibility with each other.

公开(公告)号：AT289625T

公开(公告)日：2005-03-15

申请号：AT02013173

申请日：2002-06-14

Applicant: CANON KK

Inventor： OGASAWARA MASASHI ,  TOCHIHARA SHINICHI ,  TAKAHASHI KATSUHIKO

IPC: C09D11/00

Abstract: An ink set for ink-jet recording that comprises a plurality of inks containing coloring materials insoluble in water to form a high quality ink-jet recording image is provided. The water-based ink set for ink-jet recording comprises a black ink and a color ink, wherein the black ink contains a carbon black as a coloring material having a volume average particle diameter determined by dynamic light scattering of not less than 50 nm, the color ink contains a pigment as a coloring material having a volume average particle diameter determined by dynamic light scattering of not more than 60 nm, and an accumulative 90% particle diameter of volume particle size distribution of not more than 100 nm, the volume average particle diameter of the carbon black of the black ink is larger than the volume average particle diameter of the pigment of the color ink, and the black ink has a surface tension higher than that of the color ink.