公开(公告)号：JPH08337747A

公开(公告)日：1996-12-24

申请号：JP16782795

申请日：1995-06-12

Applicant: CANON KK

Inventor： YAMAMOTO MAYUMI ,  SATO SHINICHI ,  TAKIZAWA YOSHIHISA ,  TERAOKA HISASHI ,  NAGASHIMA SATOSHI ,  SAITOU ERIKO

IPC: B41J2/01 ,  B41J2/17 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/328 ,  C09D11/38

Abstract: PURPOSE: To obtain an ink containing an anionic dye, a liquid medium, a compound forming a slightly water soluble complex with a polyvalent metal and a water-soluble inorganic sulfate, having storage stability and discharge stability and suitable for ink jet type printer, etc. CONSTITUTION: This ink contains (A) an anionic dye, preferably a dye having at least one or more COOM groups (M is an alkali metal or a volatile amine) in the molecule, (B) a liquid medium consisting mainly of water, (C) a compound forming a slightly water-soluble complex with a polyvalent metal, preferably a compound of the formula R1 is a 1-48C alkyl or H; R2 is (CH2 )a -X1 [(a) is an integer of 1-4; X1 is a COOM, sulfone, etc.] or H; R3 is (CH2 )a -X2 [(b) is same as (a); X2 is same as X1 ]} and (D) an inorganic sufuric acid salt capable of making the polyvalent metal water-soluble. Furthermore, the ink is stored by a member containing a trace amount of the polyvalent metal (preferably tin).

公开(公告)号：JPH08120204A

公开(公告)日：1996-05-14

申请号：JP24047195

申请日：1995-08-28

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  TAKIZAWA YOSHIHISA ,  SATO SHINICHI ,  TERAOKA HISASHI

IPC: B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328 ,  C09D11/38

Abstract: PURPOSE: To improve prevention of clogging, recording stability and storage stability by incorporating a specific compound, a urea, a coloring material and water. CONSTITUTION: This ink is prepared by dissolving 0.05-20wt.% at least one compound selected from compounds of formula I [R , R are each H, alkyl, benzyl, -CH2 CHOH, -CH2 (OH)CH3 ; R , R are each H, methyl; n>=1], compounds of formula II (R is R ; R -R are each H, methyl; n, m are each an integer satisfying m+n>=1), and compounds of formula III (R -R are each H, methyl; m, n, p are each an integer satisfying m+n>=1 and p>=1), 0.5-20wt.% urea and 0.1-15wt.% coloring agent in 50-98wt.% water so that the weight ratio of the compound(s) of formulae I-III to the urea may become 1:1-1:15, and adjusting the pH at 7-10.5.

公开(公告)号：JPH07238245A

公开(公告)日：1995-09-12

申请号：JP5112794

申请日：1994-02-25

Applicant: CANON KK

Inventor： SAITOU ERIKO ,  TAKIZAWA YOSHIHISA ,  YAMAMOTO MAYUMI ,  SATO SHINICHI ,  NAGASHIMA SATOSHI ,  TERAOKA HISASHI

IPC: B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/328 ,  C09D11/36 ,  C09D11/38

Abstract: PURPOSE:To obtain an ink excellent in the water resistance of prints when printed on plain paper therewith, also capable of recording with high print quality, thus suitable for ink jet recording. CONSTITUTION:This ink comprises (A) a dye, in the form of free acid, of formula I {Ar and Ar each is a (substituted) aryl, at least one of them having COOH or COSH; J and J each is of formula II, III or IV [R is H, a (substituted) alkyl, a halogen, CN, ureide, etc.; T is an alkyl; W is H, CN, pyridium, COOH, etc.; (m) is a 2-8C alkylene chain; B is H, an alkyl or COOH]; R -R each is H or a (substituted) alkyl; L is a divalent organic bond group; (n) is 0 or 1; X is carbonyl, of formula V [Z is OR (R is H, an alkenyl, etc.), etc.], etc.}, (B) a compound selected from secondary amines (derivatives), tertiary amines (derivatives) and the respective multiple compounds and having alkyl group(s), carboxyl group(s) (salt(s)) or sulfone group(s) (salt(s)), and (C) a liquid medium.

公开(公告)号：JP2006348304A

公开(公告)日：2006-12-28

申请号：JP2006213471

申请日：2006-08-04

Applicant: CANON KK

Inventor： MISHINA SHINYA ,  TAKIZAWA YOSHIHISA ,  OSUMI KOICHI ,  SANADA MIKIO ,  TERAOKA HISASHI ,  YAKUSHIGAWA YUUKO ,  HATTORI YOSHIFUMI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide an ink capable of mitigating the dependency on image quality of recording media and giving a high quality image stably. SOLUTION: The ink for inkjet recording contains carbon black and a salt. The carbon black is a self dispersible carbon black having a hydrophilic group: -COO(M2) (wherein, M2 is a hydrogen atom, an alkali metal, ammonium or an organic ammonium) bonded to the surface of the carbon black through a substituted or nonsubstituted phenylene group. The salt is represented by Ph-COO(M1) (wherein, M1 is ammonium; and Ph is a phenyl group). COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2002309140A

公开(公告)日：2002-10-23

申请号：JP2001261796

申请日：2001-08-30

Applicant: CANON KK

Inventor： TAKUHARA HIROYUKI ,  TAKADA YOICHI ,  TAKADA YUKO ,  TERAOKA HISASHI ,  MAFUNE KUMIKO ,  SUGAYA TAKESHI ,  TAKIZAWA YOSHIHISA ,  ASAKI NORIYASU

IPC: B41J2/01 ,  B41M5/00 ,  C09B5/14 ,  C09B29/30 ,  C09B31/08 ,  C09B31/22 ,  C09B33/10 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/40

Abstract: PROBLEM TO BE SOLVED: To provide a high-quality multicolor image of which the colored inks exhibit almost the same discoloration ΔE after long-time storage, the color balance after long-time storage is destroyed little, and the bleed between a pigment-containing black ink and a color ink is moderated. SOLUTION: An ink set is provided which comprises a black ink containing an aqueous medium and a pigment dispersed therein by the action of an ionic group and at least two color inks each containing a colorant and an aqueous medium. Each of the color inks gives such as image that its light discoloration, expressed by ΔE in a CIELAB color space display system, differs from that of images given by other color inks by 10 or lower. The ΔE is obtained by a light resistance test under such conditions as to cause the discoloration equivalent to that caused by sunlight exposure through a window in a pseudoroom for at least 3 years. At least one color ink contains at least either a colorant or an additive unstabilizing the dispersion of the pigment in the black ink.

公开(公告)号：JP2002003766A

公开(公告)日：2002-01-09

申请号：JP2000190329

申请日：2000-06-23

Applicant: CANON KK

Inventor： TERAOKA HISASHI ,  YAKUSHIGAWA YUUKO

IPC: B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/328 ,  C09D11/36

Abstract: PROBLEM TO BE SOLVED: To provide an ink hardly changeable in its properties even under various enviromnents or long-term preservation conditions and capable of stably giving high-grade ink jet printed images. SOLUTION: This ink is characterized by essentially comprising a dye having a structure shown by general formula (I) (wherein, R1 and R2 are each H, an alkyl, alkoxy or halogen atom; and X1 and X2 are each sulfo group or a salt thereof or carboxy group or a salt thereof), urea and a polar organic solvent having a dipole moment of >=2.30 D. A 2nd objective ink jet printing method involves a step for giving an ink energy and issuing the ink as ink droplets; wherein the ink is characterized by being the ink described above.

公开(公告)号：JPH11320921A

公开(公告)日：1999-11-24

申请号：JP13374098

申请日：1998-05-15

Applicant: CANON KK

Inventor： TERAOKA HISASHI

IPC: B41J2/21 ,  B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  C09D11/40

Abstract: PROBLEM TO BE SOLVED: To obtain a sharp image with a sufficient density by containing specific magenta, yellow and cyan inks. SOLUTION: A magenta ink contains one or more kinds of pigments with the free acid type represented by formula I. An yellow ink contains one or more kinds of pigments selected from the group consisting of the compounds with the free acid type represented by formula II. A cyan ink contains one ore more kinds of pigments selected from the group consisting of C. I. Direct Blue 86, C. I. Direct Blue 199, C. I. Acid Blue 9, and the compounds with the free acid type represented by formula III. In the formula I, R , R , R , R , R and R are independently substituted 1-9C alkyl group, or the like, m and n are each 0, 1 or 2, X and X are independently a chlorine atom, or the like, and R is a hydrogen atom, or the like. In the formula II, Ar and Ar are independently an aryl group, or the like. In the formula II, Pc is a phthalocyanine nucleus containing a metal, and R , R and R are independently a hydrogen atom, or the like.

公开(公告)号：JPH1180636A

公开(公告)日：1999-03-26

申请号：JP25795897

申请日：1997-09-08

Applicant: CANON KK

Inventor： TERAOKA HISASHI ,  TAKIZAWA YOSHIHISA ,  OSUMI KOICHI ,  HATTORI YOSHIFUMI ,  KATSURAGI TAKASHI

IPC: B41J2/01 ,  C09D11/00 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide an aqueous pigment ink which, although containing carbon black as a coloring material, offers a high printing density and a printed image with good image characteristics showing a complete resistance to water and light, has a high storage stability and is stably discharged without any clogging and an ink-jet recording method and device using ink. SOLUTION: An aqueous pigment ink comprises at least a coloring material, a water-soluble organic solvent wherein this coloring material is dispersed and water. The coloring material comprises a self-dispersing carbon black, to the surface of which at least one hydrophilic group is bound directly or through other atomic groups. The average particle size A (nm) and the degree of blackness index B of the self-dispersing carbon black satisfy formulae A>=20 and B/A>=5.0.

公开(公告)号：JPH10195360A

公开(公告)日：1998-07-28

申请号：JP30843997

申请日：1997-11-11

Applicant: CANON KK

Inventor： OSUMI KOICHI ,  KATSURAGI TAKASHI ,  TERAOKA HISASHI ,  TAKIZAWA YOSHIHISA ,  HATTORI YOSHIFUMI

IPC: B41J2/01 ,  C09C1/56 ,  C09D11/00 ,  C09D11/02 ,  C09D11/023 ,  C09D11/033 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To obtain a water-based pigment ink which is excellent in long-term storage stability, does not clog a nozzle, and exhibits improved delivery stability, jetting accuracy on a recording medium, quality, and fastness by compounding a colorant contg. a self-dispersible carbon black having hydrophilic groups bonded to the surface thereof with a humectant and a water-base medium contg. water and a water-soluble org. solvent. SOLUTION: This ink is prepd. by compounding a colorant contg. a specific carbon black with a water-based medium, a specific humectant, and a surfactant and does not contain a dispersant for dispersing a pigment. As the result of using, as the colorant, an ionic self-dispersible carbon black having at least one kind of hydrophilic group bonded to the surface thereof directly or through other groups of atoms, a dispersant for dispersing the carbon black is not necessary. The humectant used has a structure represented by the formula (wherein m and n are each 1-5). The ink contains 0.1-15wt.% colorant and 1-30wt.% humectant.

公开(公告)号：JPH10140062A

公开(公告)日：1998-05-26

申请号：JP31567296

申请日：1996-11-13

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  TERAOKA HISASHI ,  OSUMI KOICHI ,  TAKIZAWA YOSHIHISA ,  HATTORI YOSHIFUMI

IPC: B41J2/01 ,  B41J2/175 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To provide an ink tank enabling the stable use for a long time in an excellent state without damaging storage stability in case where an ink prepared by dispersing carbon black is stored in the ink tank, in which the ink is stored in a state impregnated in an ink absorbent, and to provide an ink jet cartridge, etc., using the ink tank. SOLUTION: This ink tank stores an ink absorbent, in which an ink containing at least a coloring material and an aqueous medium is impregnated. The ink absorbent is composed of a soft hydrophobic absorbent. The ink contains an auto-dispersion type carbon black, in which at least one kind of hydrophilic group is bound on its surface directly or via another atomic group, as coloring material which is dispersed in the ink without needing a dispersant.