公开(公告)号：JP2002035789A

公开(公告)日：2002-02-05

申请号：JP2001126067

申请日：2001-04-24

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: F28F19/01 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C23F11/12 ,  C23F11/18

Abstract: PROBLEM TO BE SOLVED: To provide a scale preventive composition which can effectively prevent the scale formation in an aqueous system while preventing the corrosion of metal parts of apparatuses. SOLUTION: This composition contains (a) at least one chemical selected from among polyphosphoric acid, dicarboxylic acids, polyaminocarboxylic acids, aldonic acid, hydroxycarboxylic acids, polyol phosphates, and their salts, (b) an amino-group-containing acid and/or its salt, and (c) water.

公开(公告)号：JP2000309735A

公开(公告)日：2000-11-07

申请号：JP2000045868

申请日：2000-02-23

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41J2/05 ,  B41J2/14 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To further decrease scorches adhering to the surface of a heater for applying thermal energy to an ink in a recording head to deliver the ink from the recording head. SOLUTION: There is provided a method for decreasing scorches adhering to the surface of a heater of an ink jet printer having a recording head equipped with a heater for applying thermal energy to an ink to deliver the ink from an orifice, wherein the heater is provided with the outermost surface-protecting layer containing a metal and/or a metal oxide and the ink contains at least one selected among (a) coloring materials, (b) liquid media and (c) polyol phosphates and salts thereof.

公开(公告)号：JP2000301723A

公开(公告)日：2000-10-31

申请号：JP2000041069

申请日：2000-02-18

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41J2/015 ,  B41J2/05 ,  B41J2/14 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To further reduce scorching to the heater surface for ejecting ink from a recording head by applying thermal energy to ink in the recording head. SOLUTION: In the method for reducing scorching to the heater surface of an ink jet printer comprising a recording head having a heater for ejecting ink from an orifice by applying thermal energy, the heater has an uppermost surface protective layer containing a metal and/or a metal oxide and the ink contains (a) coloring material, (b) liquid medium, and (c) at least one selected from a group of aldonic acid, γ-aldonolactone, δ-aldonolactone, and aldonate.

公开(公告)号：JPH10140063A

公开(公告)日：1998-05-26

申请号：JP31567496

申请日：1996-11-13

Applicant: CANON KK

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

IPC: B41J2/01 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To obtain an ink set, whose black ink gives a black ink image having excellent printing quality, water resistance and light stability, has excellent storage stability, wettability of the face of a printing head, ejection stability in intermittent ejection, etc., and is free from bleeding and further the occurrence of white haze (the lack of coloring material in the boundary between a high surface tension color ink and a low surface tension black ink). SOLUTION: This ink set for ink jet printing is used for recording color images on a material to be printed using inks of two or more colors including black ink. The black ink is composed of 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, and at least one material selected from a cationic material and a nonionic material. At the same time, the color ink contains at least a coloring material and a surfactant. The polarity of the coloring material in at least one color ink and the polarity of the black ink are opposite to each other. Ink jet printing and ink jet instrument using the ink set.

公开(公告)号：JPH101632A

公开(公告)日：1998-01-06

申请号：JP17717896

申请日：1996-06-19

Applicant: CANON KK

Inventor： TERAOKA HISASHI ,  NAGASHIMA SATOSHI ,  KATSURAGI TAKASHI

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

Abstract: PROBLEM TO BE SOLVED: To obtain the subject ink for ink jet recording apparatus, free from feathering phenomenon on uncoated paper and having high water-resistance by using a coloring material having a specific viscosity and a liquid medium for dissolving the coloring material as essential components. SOLUTION: This ink free from boundary feathering problem at the boundary region of inks having different colors contains (A) a coloring material exhibiting a maximum viscosity peak when the pH of the aqueous solution of the coloring material is varied from acidic side toward alkaline side, increasing the viscosity without developing a peak when the pH is varied from alkaline side to acidic side and starting the viscosity increase in a region of pH>=6 when the pH of an aqueous solution of the coloring material having a concentration of 3wt.% is varied from alkaline side toward acidic side at 25 deg.C and (B) a liquidmediumhaving a surface tension of

公开(公告)号：JP2002012805A

公开(公告)日：2002-01-15

申请号：JP2001122412

申请日：2001-04-20

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To obtain an ink (for ink jet) capable of further reducing scorched deposits adhered to the surface of a heater for discharging the ink from a recording head by applying a thermal energy to the ink in the recording head and provide a method for reducing scorched deposits on the recording head and a method for ink jet recording and a recording method and apparatus capable of attaining a high quality printing and making the recording head have a long life. SOLUTION: This ink contains (a) a colorant, (b) a liquid medium, (c) at least one species selected from a polyphosphoric acid, a dicarboxylic acid, a polyaminocarboxylic acid, aldonic acid, a hydroxycarboxylic acid, a polyol phosphate and a salt thereof and (d) an acid having an amino group and/or its salt. This ink jet ink uses the aforesaid ink. A method for reducing scorched deposits to the surface of a heater of the recording head, a method for ink jet recording, a recording apparatus, a recording unit and a method for making the recording head to have a long life are also provided in this invention.

公开(公告)号：JP2002012803A

公开(公告)日：2002-01-15

申请号：JP2001039612

申请日：2001-02-16

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41J2/05 ,  B41J2/14 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To obtain an ink capable of reducing scorched deposits to a heater surface for discharging the ink to a recording head by applying a thermal energy to the ink, provide a method for reducing scorched deposits of a recording head to a heater, a method for ink jet recording capable of presenting a high quality printing and attaining to make the head have a long life, a recording apparatus and a method for making the recording head have the long life. SOLUTION: This ink for ink jet contains a colorant, a liquid medium and one or more species of ammonium salts of an acid having a methyl group or a methylene group and a carboxy group, or contains a colorant, a liquid medium and an ammonium aldonate, or contains a colorant, a liquid medium and one or more of compounds selected from monoammonium dihydrogen citrate, diammonium hydrogen citrate, triammonium citrate. A method for reducing scorched deposits, a recording method, an apparatus and the like and a method for making the head have a long life are also claimed in this invention.

公开(公告)号：JP2001310545A

公开(公告)日：2001-11-06

申请号：JP2001047941

申请日：2001-02-23

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  SHIOTANI MAKOTO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328 ,  C09D11/54

Abstract: PROBLEM TO BE SOLVED: To provide a liquid composition, an ink set, a method of ink-jet recording, a record device for which bleeding is controlled, water resistance is high and a formation of high quality image is made possible by using ink jet recording method combining coloring ink. SOLUTION: The ink jet recording liquid composition is used with coloring ink, and then a reaction is caused when it touches coloring ink. The liquid composition contains a multiple value metallic slat of polyol-phosphoric acid ester and a liquid medium, (1) the color ink that contains a color material, the multiple value metallic salt of the liquid medium and polyol-phosphoric acid ester, (2) it is an ink set containing a color material and a liquid medium for ink jet recording made by combining black ink which react with the above described color ink contacting with the color ink, ink jet recording method, recording unit and ink jet recording device.

公开(公告)号：JP2001172536A

公开(公告)日：2001-06-26

申请号：JP2000306642

申请日：2000-10-05

Applicant: CANON KK

Inventor： KATSURAGI TAKASHI ,  OZAKI TERUO ,  SHIROTA KINU ,  KANDA HIDEHIKO ,  KUBOTA MASAHIKO

IPC: B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  C09D11/40

Abstract: PROBLEM TO BE SOLVED: To provide an ink set composed of four or more colors which alleviates bleeding in color images and, at the same time, can improve the clarity and the quality level of prints in recording in materials to be recorded, particularly plain papers, and the like. SOLUTION: In the ink jet recording ink set to be used in ink jet recording which records color images in a material to be recorded with the use of a three- or more-color ink, the ink comprises coloring materials over the entire color range and liquid media and, respective coloring materials of the ink agglomerate in all combinations by chemical reaction when different colors of the ink are brought into contact with one another on a material to be recorded. A bleeding alleviation method in ink jet recording, an ink jet recording method and ink jet recording equipment using the bleeding alleviation method are provided.

公开(公告)号：JP2001171126A

公开(公告)日：2001-06-26

申请号：JP2000285572

申请日：2000-09-20

Applicant: CANON KK

Inventor： SHIROTA KINU ,  OZAKI TERUO ,  KATSURAGI TAKASHI ,  KANDA HIDEHIKO ,  KUBOTA MASAHIKO

IPC: B41J2/01 ,  B41J2/015 ,  B41J2/05 ,  B41J2/14 ,  B41J2/145 ,  B41J2/15 ,  B41J2/175 ,  B41M5/00 ,  C09D11/00

Abstract: PROBLEM TO BE SOLVED: To prevent a scorch on a heating head which originates from ink in a recording head used in an ink-jet recording method, and suppress corrosion of the heating head by ink. SOLUTION: A maximum reach temperature of a surface of the heating head in contact with ink is set to be not higher than 560 deg.C.