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    INK JET RECORDING INK
    11.
    发明专利
    INK JET RECORDING INK 失效

    公开(公告)号：JPH11209671A

    公开(公告)日：1999-08-03

    申请号：JP1230598

    申请日：1998-01-26

    Applicant: KAO CORP

    Inventor： WAKABAYASHI SHIGEMI ,  ISHII MASUKAME ,  SUZUKI SHOICHI ,  TSUJII YOSHIAKI

    IPC: C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To improve the density of printed characters on a substrate by using an ink jet recording ink which comprises a pigemnt, a dispersant, a water-soluble medium, and monodispersive fine particles, the particle sizes and compounding ratio of the particles being selected so that the ratio of the area covered with the particles to the printed area is a specified value or higher. SOLUTION: The particle sizes and compounding ratio of the fine particles are selected so that the ratio of the area covered with the particles to the printed area is 50% or higher, still pref. 80% or highr, esp. pref. 90% or higher. Pref., the particles are inorg. particles, pref. silicon oxide such as colloidal silica, having particle sizes of 1-50 nm and are compounded in an amt. of 1-10 wt.% of the ink. Ths use of polymer particles, pref. melamine resin particles, having particle sizes of 100-300 nm and compounded in an amt. of 1-20 wt.% of the ink is also pref.

    INK FOR INK JET RECORDING
    12.
    发明专利
    INK FOR INK JET RECORDING 失效

    公开(公告)号：JPH10298474A

    公开(公告)日：1998-11-10

    申请号：JP11319797

    申请日：1997-04-30

    Applicant: KAO CORP

    Inventor： ISHII MASUKAME ,  TSUJII YOSHIAKI ,  SUZUKI SHOICHI ,  WAKABAYASHI SHIGEMI ,  SUZUKI ATSUSHI

    IPC: C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain an ink excellent in long-term storage stability and environmental stability by forming an ink comprising a water-insoluble or difficultly water-soluble colorant, a dispersant and a water-soluble medium, wherein the dispersant is a polymeric dispersant obtained by condensing a sulfonate of aromatic compound mixture containing alkyl naphthalenes and phenolic compounds with formalin and neutralizing the condensate. SOLUTION: The aromatic compound mixture contains aromatic compounds represented by formula I (where R1 and R2 are each H or a 1-5C alkyl) and formula II (wherein R3 and R4 are each H or a 1-5C alkyl). Compounds of formula I are desirably dimethylnaphthalene, methylnaphthalene and butylnaphthalene. Compounds of formula II are particularly desirably cresol, xylenol, phenol and ethylphenol. The use ratio of the compound of formula I to the compound of formula II is desirably 1/3 to 1/15 by weight.

    AQUEOUS PIGMENT INK
    13.
    发明专利
    AQUEOUS PIGMENT INK 失效

    公开(公告)号：JPH1060352A

    公开(公告)日：1998-03-03

    申请号：JP21762896

    申请日：1996-08-19

    Applicant: KAO CORP

    Inventor： TSUJII YOSHIAKI ,  ISHII MASUKAME ,  SAKUMA TADASHI ,  YANAGI HIDEKI ,  SUZUKI SHOICHI ,  WAKABAYASHI SHIGEMI ,  AIDA KENJI

    IPC: C09D11/00 ,  C09D11/02 ,  C09D11/023 ,  C09D11/033 ,  C09D11/037 ,  C09D11/10 ,  C09D11/102 ,  C09D11/106 ,  C09D11/107 ,  C09D11/108 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To provide an aqueous pigment ink which affords improved fixative ability of a pigment for a material to be recorded thereon, particularly for an OHP sheet and the like, by using a polymer dispersant and a polyethyleneimine having a weight average molecular weight within a specific range in combination. SOLUTION: This aqueous pigment ink comprises a pigment, a polymer dispersant, a polyethyleneimine having a weight average molecular weight of 800 to 300,000 a water-soluble solvent and water. As the polyethyleneimine, a polyethyleneimine which is grafted, as a side chain, onto a main chain comprised of an acrylic chain, a polyethyleneimine which has been subjected to hydroxylation, an amphoterically ionized polyethyleneimine and the like are preferably used. It is preferred that a polyethyleneimine is compounded in the aqueous pigment ink in an amount of 0.01 to 10wt.%. The polymer dispersant is preferably a copolymer prepared from (meth) acrylic acid derivatives. This aqueous pigment ink is suitable especially for use in ink-jet recording.

    WATER-BASED PIGMENT INK
    16.
    发明专利
    WATER-BASED PIGMENT INK 失效

    公开(公告)号：JPH1046079A

    公开(公告)日：1998-02-17

    申请号：JP20742996

    申请日：1996-08-06

    Applicant: KAO CORP

    Inventor： AIDA KENJI ,  ISHII MASUKAME ,  SAKUMA TADASHI ,  YANAGI HIDEKI ,  SUZUKI SHOICHI ,  WAKABAYASHI SHIGEMI ,  TSUJII YOSHIAKI

    IPC: C09D11/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/10 ,  C09D11/102 ,  C09D11/106 ,  C09D11/107 ,  C09D11/108 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject ink good in pigment dispensability over a long period and under high-temperature storage by blending water with a pigment, a high molecular dispersant comprising a copolymer from an alkylene oxide- added (meth)acrylic acid derivative and a specific monomer and an anionic surfactant. SOLUTION: This water-based pigment ink excellent in pigment dispersion stability over a long period and under high-temperature storage, thus suitable for ink jet printing use, is obtained by blending water with (A) a pigment such as carbon black, (B) a high molecular dispersant comprising a copolymer from an alkylene oxide-added (meth)acrylic acid derivative of formula I (R1 and R2 are each H or a lower alkyl: (m1 ) is an integer of 0-2; AO is a 2-3C oxyalkylene group; (n) is an integer of 1-300; X is H or a lower alkyl) and a monomer of formula II [R3 to R5 are each H, a lower alkyl or of the formula (CH2 )m2 COOHM2 (M2 is H, an alkali metal, alkaline earth metal, ammonium, etc.; (m2 ) is an integer of 0-2); M1 is the same kinds as M2 ], and (C) an anionic surfactant such as an alkylbenzenesulfonate.

    WATER-BASE PIGMENTED INK
    17.
    发明专利
    WATER-BASE PIGMENTED INK 失效

    公开(公告)号：JPH09183926A

    公开(公告)日：1997-07-15

    申请号：JP34303295

    申请日：1995-12-28

    Applicant: KAO CORP

    Inventor： YANAGI HIDEKI ,  WAKABAYASHI SHIGEMI ,  AIDA KENJI

    IPC: B01F17/00 ,  B01F17/52 ,  C09D11/00 ,  C09D11/023 ,  C09D11/033 ,  C09D11/037 ,  C09D11/10 ,  C09D11/102 ,  C09D11/106 ,  C09D11/107 ,  C09D11/322 ,  C09D11/326 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain a water-base pigmented ink which does not cause plugging of the head of an ink jet printer and has improved storage stability, water resistance and light resistance by mixing a pigment with a specified dispersion, water and a water-soluble solvent. SOLUTION: A dispersant comprising a copolymer prepared by copolymerizing a monomer represented by formula I (wherein R1 and R2 are each H or methyl; m1 is 0-2; AO is a 2 or 3 oxyalkylene; (n) is 1-300; and X is H or a 1-3 C alkyl) with a monomer represented by formula II or III (wherein R3 to R5 are each H, methyl or (CH2 )m2 COOM2 ; R is H or methyl; M1 , M2 and Y are each H, an alkali (alkaline earth) metal, an (alkyl)ammonium or a substituted alkylammonium; and m2 is 0-2) in a molar ratio of 0.1/100 to 100/100 is obtained. One (1) to 20wt.% pigment is mixed with 0.3-30wt.% above dispersant, 1-30wt.% water-soluble solvent, 40-97.6wt.% water in a weight ratio of the pigment to the dispersant of 1/10 to 10/1, and coarse particles having a particle diameter of 2,000nm or above are removed from the obtained mixture to obtain a water- base pigmented ink.

    LUBRICATION LAYER FILM MAKING APPARATUS
    19.
    发明专利
    LUBRICATION LAYER FILM MAKING APPARATUS 失效

    公开(公告)号：JPH08161739A

    公开(公告)日：1996-06-21

    申请号：JP29820894

    申请日：1994-12-01

    Applicant: KAO CORP

    Inventor： SASAKI KATSUMI ,  KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  MATSUO YUZO ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

    IPC: B05B17/06 ,  G11B5/84

    Abstract: PURPOSE: To make the adhesion of a lubricating agent uniform by forming a nozzle means of an ultrasonic spraying device for spraying the lubricating agent toward a magnetic layer of a material to be evaporated running in a slit through which a drop-like lubricating agent passes. CONSTITUTION: A material 6 to be evaporated comprising a synthetic resin tape having a magnetic layer formed on the side 6a of the surface thereof runs to a winding roll 14 from a feed roll 13 in a vacuum container 1 via a heating roll 8. An ultrasonic spraying device 3 comprises an ultrasonic vibration system 4 having a vibrator and a nozzle means 5 to be excited from the vibrator through a horn. A slit-shaped opening with the length thereof equal to the width of the material 6 to be evaporated is provided at the tip part facing the material 6 to be evaporated of the nozzle means 5. A lubricating agent supplying device 11 supplies a lubricating agent via an internal cavity of the nozzle means 5 to be sprayed to the material 6 to be evaporated at the slit- shaped opening. Here, as the width of clearance of the slit can be set accurately from the minimum 1μm, the spraying across the width of the material 6 to be evaporated is uniform while the thickness thereof can be controlled precisely.

    MICROWAVE PLASMA DEVICE
    20.
    发明专利
    MICROWAVE PLASMA DEVICE 失效

    公开(公告)号：JPH08102398A

    公开(公告)日：1996-04-16

    申请号：JP23783794

    申请日：1994-09-30

    Applicant: KAO CORP

    Inventor： WAKABAYASHI SHIGEMI ,  KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  SHIGA AKIRA

    IPC: H05H1/46 ,  C23C16/27 ,  C23C16/50 ,  C23C16/511

    Abstract: PURPOSE: To improve plasma excitation efficiency by reducing the rate at which microwaves are attenuated through a window. CONSTITUTION: This microwave plasma device comprises a microwave source 13, a waveguide 14 to which microwaves are transmitted, a plasma excitation chamber 11 connected to the waveguide 14, a means 12 for introducing gas into the plasma excitation chamber 11, and a window 3 located between the waveguide 14 and the plasma excitation chamber 11. The window 3 projects along or i n the direction of introduction of the microwaves, and has a projecting edge that serves as the apex of a pyramid or the side of a prism.

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