公开(公告)号：JPH11323221A

公开(公告)日：1999-11-26

申请号：JP12896198

申请日：1998-05-12

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI

IPC: B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C07D213/20 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324

Abstract: PROBLEM TO BE SOLVED: To obtain an aqueous ink containing a black pigment, excellent in issuing stability after the interruption of a printing operation when used for an ink-jet recording, by compounding a specific compound, water and a coloring material comprising a specified self-dispersion type carbon black. SOLUTION: This aqueous ink containing a black pigment is obtained by compounding (A) 0.1-15 wt.% of a coloring material comprising a self-dispersion type carbon black to whose surface one or more hydrophilic groups are bonded directly or through one or more other atomic groups, (B) 1-30 wt.% of a compound of the formula [(n) is 1 or 2; (m) is 0-2] (for example, 3-methyl-1,3- butanediol) and (C) 50-95 wt.% of water. The hydrophilic groups in the component A preferably comprise -COOM [M is H, an alkali metal or (organic) ammonium], -SO3 M, -SO2 NH2 , -PO3 HM, -PO3 M2 , -NH 3 , etc., and the other atomic groups in the component A preferably comprise a 1-12C alkyl, (substituent- containing) phenyl, (substituent-containing) naphthyl, etc.

公开(公告)号：JPH0841398A

公开(公告)日：1996-02-13

申请号：JP19896094

申请日：1994-08-02

Applicant: CANON KK

Inventor： YAMAMOTO TAKAO ,  MAFUNE KUMIKO ,  KATSURAGI TAKASHI ,  NISHIWAKI OSAMU ,  TONOGAKI MASAHIKO

IPC: B41M5/00 ,  C09D11/00

Abstract: PURPOSE:To provide an ink jet ink capable of pH retention for a long period of time, high in coloring material dissolution stability, not causative of nozzle clogging, and capable of securing a sufficient amt. of ejection. CONSTITUTION:An ink comprising a coloring material and a liq. medium capable of dissolving the coloring material contains at least one compd. selected from among 2-(cyclohexylamino)ethanesulfonic acid, 3-N-cyclohexylamino-2- hydroxypropanesulfonic acid, 3-N-cyclohexylaminopropanesulfanic acid and glycine, and a hydroxide or carbonate of an alkali metal.

公开(公告)号：JP2001301309A

公开(公告)日：2001-10-31

申请号：JP2001039613

申请日：2001-02-16

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328 ,  C09D11/40 ,  C09D11/54

Abstract: PROBLEM TO BE SOLVED: To provide a liquid composition, with which bleeding is suppressed and a high quality recorded image, the water resistance of which is improved, can be formed and which is used in an ink jet recording method together with colored ink. SOLUTION: This ink jet recording liquid composition, which is used together with a colored ink and develops a reaction through the contact with the colored ink includes a multivalent metal salt of aldonic acid and a liquid medium.

公开(公告)号：JP2001294791A

公开(公告)日：2001-10-23

申请号：JP2001029606

申请日：2001-02-06

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41J2/015 ,  B41J2/05 ,  B41J2/14 ,  B41J2/145 ,  B41J2/17 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To provide an ink which enables a high quality printing and extends the life of a recording head by reducing the attachment of scorched deposits onto the surface of a heater which applies heat energy to the ink inside the recording head to discharge the ink from the recording head, a process for reducing the attachment of scorched deposits, a process and a device for ink-jet recording and a process for extending the life of a recording head. SOLUTION: The ink contains (a) a coloring material, (b) a liquid medium and (c) a compound chosen from diglycolic acid and salts thereof. In the process for reducing the attachment of scorched deposits to the recording head heater, the process and device for ink-jet recording and the process for extending the life of a recording head, this ink is used.

公开(公告)号：JP2001049292A

公开(公告)日：2001-02-20

申请号：JP2000165927

申请日：2000-06-02

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO ,  SAKAEDA MASATAKA ,  YOKOI HIDETO

IPC: B41J2/175 ,  C11D7/18

Abstract: PROBLEM TO BE SOLVED: To obtain a composition which improves the life and ink delivery characteristics of an ink jet recording head by using a detergent in an effective amount for cleaning the recording head. SOLUTION: A compound having oxidizing power is preferable as the detergent. Examples of such compounds are hydrogen peroxide, sodium percarbonate, sodium carbonate peroxyhydrate, sodium perborate, sodium peroxide, sodium periodate, sodium hypochlorite, sodium perchlorate, sodium persulfate, and peracetic acid, hydrogen peroxide being the most favorable. The content of the detergent is preferably 0.05-40 wt.%. Normally, the detergent is compounded into water to prepare the composition. The use of deionized water is preferable. A water-soluble organic solvent may be compounded into the composition. The composition is especially effective for cleaning a head which delivers ink drops by the action of heat energy.

公开(公告)号：JP2000309101A

公开(公告)日：2000-11-07

申请号：JP2000045867

申请日：2000-02-23

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41J2/05 ,  B41J2/14 ,  B41J2/16 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To further suppressing sticking of burnt on a surface of a heater that ejects ink from a recording head by applying thermal energy to the ink in the recording head. SOLUTION: There is disclosed a method for suppressing sticking of burnt on a surface of a heater of a recording head in a printer having the heater for applying thermal energy to ink so as to eject the ink through an orifice. The heater has an uppermost surface protection layer including a metallic and/or a metal-oxide material. The ink includes at least one material selected from a coloring agent, a liquid, aldaric acid and aldaric acid salt.

公开(公告)号：JPH09111166A

公开(公告)日：1997-04-28

申请号：JP29599995

申请日：1995-10-20

Applicant: CANON KK

Inventor： NAGASHIMA SATOSHI ,  KATSURAGI TAKASHI ,  TERAOKA HISASHI

IPC: B41J2/01 ,  B41J2/165 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To prepare a reliable ink, an ink jet recording method and an equipment using the ink by imparting fluidity to the whole ink under particular conditions and forming the initial composition of the ink of a colorant, water, and a liq. medium. SOLUTION: This ink is prepd. so that, upon evaporation of water in the ink in an environment of 60 deg.C, the whole ink is fluid, no floated precipitate is produced in the gas-liq. interface and the viscosity of the ink in this state in an environment of 60 deg.C is not more than 600 times the viscosity of the ink in the original state before the evaporation of water in the ink. The initial composition of the ink comprises at least a colorant, water, and a liq. medium capable of being dissolved or dispersed in water, and, pref., even when the ink is again allowed to stand in an environment of 25 deg.C after the evaporation of water in the ink in the environment of 60 deg.C, the fluidity of the whole ink is not lost. A water-soluble polymer compd. containing at least one compound selected from phosphoric acid, sulfonic acid, and carboxylic acid in a free acid form in the ink is used in combination of the colorant and the like.

公开(公告)号：JPH093344A

公开(公告)日：1997-01-07

申请号：JP17300695

申请日：1995-06-16

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  TONOGAKI MASAHIKO ,  MAFUNE KUMIKO ,  HATTORI YOSHIFUMI ,  YAMAMOTO TAKAO

IPC: B41J2/01 ,  B41M5/00 ,  C09B39/00 ,  C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/328 ,  C09D11/38 ,  D06P5/00

Abstract: PURPOSE: To obtain an ink jet ink which gives a print with a high-density distinct image, does not cause clogging, and has improved water resistance and storage stability by compounding a specific dye, a water-sol. org. solvent, and water. CONSTITUTION: 5-Aminosalicylic acid is diazotized with sodium nitrite and coupled to 3-aminonaphthoic acid at a pH of 8-10 to give dyes represented by the formulas I, II, and III [wherein A, B, Q, R, S, W, X, Y, and Z are each a benzene or naphthalene ring substd. by at least one -COOM group (M is an alkali metal or ammonium) provided that each of these dyes has at least one -OH group and at least one -NRR' group (R and R' are each H, a 1-5C alkyl, an acetyl, or a benzoyl) in the molecule, that each of the dyes represented by the formulas I and II has no -SO3 M group in the molecule, and that the dye represented by the formula III has one -SO3 group in the molecule]. An ink jet ink is prepd. by mixing 0.1-15wt.% at least one dye selected from among those dyes, 5-35wt.% water-sol. org. solvent, and 50-90wt.% water.

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：JPH07102199A

公开(公告)日：1995-04-18

申请号：JP24496393

申请日：1993-09-30

Applicant: CANON KK

Inventor： MAFUNE KUMIKO ,  NISHIWAKI OSAMU ,  YAMAMOTO TAKAO ,  KATSURAGI TAKASHI ,  TONOGAKI MASAHIKO ,  MURAI KEIICHI ,  HATTORI YOSHIFUMI

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

Abstract: PURPOSE:To obtain an ink for ink-jetting having excellent solubilization stability and an ideal black tint by using a specific coating mixture as a coloring agent and dissolving thc mixture in a liquid medium containing a polyhydric alcohol, an aliphatic monohydric alcohol, urea, an ammonium salt of inorganic acid and a hydroxide. CONSTITUTION:The ink is prepared by dissolving a coloring agent containing (A) at least one of dyes of the formula (R is NH4; Y is H, SO3R) and (B) a yellow dye containing C. I. acid yellow 17: 1, C. I. acid yellow 23 or the like in the liquid medium. The liquid medium contains a polyhydric alcohol, an aliphatic monohydric alcohol, urea, an ammonium salt of inorganic acid and a hydroxide. It shows excellent water resistance, when ordinary paper, for example, for copying or reporting, is recorded with the ink.