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公开(公告)号：DE602005022311D1
公开(公告)日：2010-08-26
申请号：DE602005022311
申请日：2005-06-28
Applicant: CANON KK
Inventor： IMAI TAKASHI , SANADA MIKIO , NITO YASUHIRO , IWATA TETSU , HAKAMADA SHINICHI , SUGAMA SADAYUKI , TAKAYAMA HIDEKI
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公开(公告)号：CA2565704C
公开(公告)日：2009-08-04
申请号：CA2565704
申请日：2005-06-28
Applicant: CANON KK
Inventor： IMAI TAKASHI , TAKAYAMA HIDEKI , NITO YASUHIRO , SANADA MIKIO , IWATA TETSU , SUGAMA SADAYUKI , HAKAMADA SHINICHI
Abstract: The present invention aims to provide an ink which has a sufficiently large area factor even in a small ink droplet quantity and can obtain images having a high image density, and further has a superior storage stability. According to the present invention, a cyan ink is provided which is used in an ink set having four kinds of aqueous inks consisting of a cyan ink, a magenta ink, a yellow ink and a black ink in which each ink comprises at least water, a water-insoluble coloring material, and a plurality of water-soluble organic solvents having a good medium or good mediums for the water-insoluble coloring material and a poor medium or poor mediums for the water-insoluble coloring material, wherein, the ratio B1/A1 is from 0.5 or more to 3.0 or less, where A1 denotes the total content (mass%) of the good medium based on the total mass of the cyan ink and B1 denotes the total content (mass%) of the poor medium based on the total mass of the cyan ink, and a water-soluble organic solvent which shows the maximum Ka value among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method is the poor medium.
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公开(公告)号：AU2005257524B2
公开(公告)日：2009-07-30
申请号：AU2005257524
申请日：2005-06-28
Applicant: CANON KK
Inventor： IMAI TAKASHI , NITO YASUHIRO , TAKAYAMA HIDEKI , HAKAMADA SHINICHI , SANADA MIKIO , SUGAMA SADAYUKI , IWATA TETSU
Abstract: The present invention aims to provide an ink which has a sufficiently large area factor even in a small ink droplet quantity and can obtain images having a high image density, and further has a superior storage stability. According to the present invention, a cyan ink is provided which is used in an ink set having four kinds of aqueous inks consisting of a cyan ink, a magenta ink, a yellow ink and a black ink in which each ink comprises at least water, a water-insoluble coloring material, and a plurality of water-soluble organic solvents having a good medium or good mediums for the water-insoluble coloring material and a poor medium or poor mediums for the water-insoluble coloring material, wherein, the ratio B 1 /A 1 is from 0.5 or more to 3.0 or less, where A 1 denotes the total content (mass%) of the good medium based on the total mass of the cyan ink and B 1 denotes the total content (mass%) of the poor medium based on the total mass of the cyan ink, and a water-soluble organic solvent which shows the maximum Ka value among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method is the poor medium.
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公开(公告)号：BRPI0512003A
公开(公告)日：2008-01-22
申请号：BRPI0512003
申请日：2005-06-28
Applicant: CANON KK
Inventor： IMAI TAKASHI , SANADA MIKIO , NITO YASUHIRO , IWATA TETSU , HAKAMADA SHINICHI , SUGAMA SADAYUKI , TAKAYAMA HIDEKI
Abstract: The present invention aims to provide an ink which has a sufficiently large area factor even in a small ink droplet quantity and can obtain images having a high image density, and further has a superior storage stability. According to the present invention, a cyan ink is provided which is used in an ink set having four kinds of aqueous inks consisting of a cyan ink, a magenta ink, a yellow ink and a black ink in which each ink comprises at least water, a water-insoluble coloring material, and a plurality of water-soluble organic solvents having a good medium or good mediums for the water-insoluble coloring material and a poor medium or poor mediums for the water-insoluble coloring material, wherein, the ratio B 1 /A 1 is from 0.5 or more to 3.0 or less, where A 1 denotes the total content (mass%) of the good medium based on the total mass of the cyan ink and B 1 denotes the total content (mass%) of the poor medium based on the total mass of the cyan ink, and a water-soluble organic solvent which shows the maximum Ka value among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method is the poor medium.
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公开(公告)号：DE69534378T2
公开(公告)日：2006-03-09
申请号：DE69534378
申请日：1995-11-13
Applicant: CANON KK
Inventor： IMAI TAKASHI , UENO YASUHIDE , HIRAI NOBUYUKI , IKEDA ATSUSHI , OKAMURA KOJI
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Patent Agency Ranking
公开(公告)号：CA2565704A1
公开(公告)日：2006-01-05
申请号：CA2565704
申请日：2005-06-28
Applicant: CANON KK
Inventor： HAKAMADA SHINICHI , SUGAMA SADAYUKI , IWATA TETSU , NITO YASUHIRO , SANADA MIKIO , IMAI TAKASHI , TAKAYAMA HIDEKI
Abstract: The present invention aims to provide an ink which has a sufficiently large area factor even in a small ink droplet quantity and can obtain images having a high image density, and further has a superior storage stability. According to the present invention, a cyan ink is provided which is used in an ink set having four kinds of aqueous inks consisting of a cyan ink, a magenta ink, a yellow ink and a black ink in which each ink comprises at least water, a water-insoluble coloring material, and a plurality of water-soluble organic solvents having a good medium or good mediums for the water-insoluble coloring material and a poor medium or poor mediums for the water-insoluble coloring material, wherein, the ratio B 1 /A 1 is from 0.5 or more to 3.0 or less, where A 1 denotes the total content (mass%) of the good medium based on the total mass of the cyan ink and B 1 denotes the total content (mass%) of the poor medium based on the total mass of the cyan ink, and a water-soluble organic solvent which shows the maximum Ka value among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method is the poor medium.
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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
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.
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公开(公告)号：ES2202734T3
公开(公告)日：2004-04-01
申请号：ES98200997
申请日：1997-03-05
Applicant: CANON KK
Inventor： IMAI TAKASHI
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公开(公告)号：DE69523716T2
公开(公告)日：2002-08-01
申请号：DE69523716
申请日：1995-11-13
Applicant: CANON KK
Inventor： IMAI TAKASHI , UENO YASUHIDE , HIRAI NOBUYUKI , IKEDA ATSUSHI , OKAMURA KOJI
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