公开(公告)号：JP2002080742A

公开(公告)日：2002-03-19

申请号：JP2001043538

申请日：2001-02-20

Applicant: KAO CORP

Inventor： WAKABAYASHI SHIGEMI ,  TSUTSUMI TAKEHIRO ,  AIDA KENJI ,  SAKAKIBARA MAKOTO

IPC: B41J2/01 ,  B41M5/00 ,  C09B67/18 ,  C09B69/00 ,  C09D11/00 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  G03G9/09

Abstract: PROBLEM TO BE SOLVED: To provide an oil-soluble dye which has excellent water resistance, alkali resistance, acid resistance, light resistance, and solubility in solvents, to provide a water-based ink which has a good color tone, can impart excellent water resistance, light resistance and weather resistance to printed articles, and has excellent storage stability, and to provide a water-based ink which hardly clogs printing heads and is used for ink jet recording. SOLUTION: This oil-soluble dye obtained by the amidation treatment of a water-soluble dye having one or more groups selected from sulfo group and carboxy group in the molecule. The water-based ink containing the oil-soluble dye. And the method for producing the oil-soluble dye, comprising halogenating the water-soluble dye having one or more groups selected from sulfo group and carboxy group in the molecule and then amidating the halogenated compound.

公开(公告)号：JPH11209666A

公开(公告)日：1999-08-03

申请号：JP1230498

申请日：1998-01-26

Applicant: KAO CORP

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

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

Abstract: PROBLEM TO BE SOLVED: To obtain a water-base ink which does not gel even at high temps. by causing the surfaces of substantially water-insoluble fine particles to adsorb a polyalkylene glycol before or during mixing and dispersing a colorant, a dispersant, and the fine particles into a water-base medium. SOLUTION: The surface of at least one kind of fine particles selected from among particles of silcon oxide, titanium oxide, and aluminum oxide are caused to adsorb a polyalkylene glycol (e.g. polyethylene glycol) pref. having a wt. average mol.wt. of 2,000-20,000. After the fine particles are mixed and dispersed into the polyalkylene glycol to give a dispersion liquid contg. fine particles having adsorbed the polyalkylene glycol, a colorant (e.g. carbon black), a dispersant (e.g. a formaline condensate of a polynuclear arom. compd. sulfonate), and a water-soluble medium (e.g. diethylene glycol) are mixed and dispersed into the liquid, and the resultant colorant dispersion is further diluted with water to a specified concn., thus giving the objective water-base ink.

公开(公告)号：JPH10338829A

公开(公告)日：1998-12-22

申请号：JP34673597

申请日：1997-12-16

Applicant: KAO CORP

Inventor： TSUTSUMI TAKEHIRO ,  AZUMA AKISHI ,  SAWADA MICHITAKA ,  SAKUMA TADASHI ,  AIDA KENJI ,  WAKABAYASHI SHIGEMI ,  UENO TETSUYA ,  KAWABE KUNIYASU

IPC: B41J2/01 ,  B41M5/00 ,  C08F290/06 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328 ,  C09D167/02

Abstract: PROBLEM TO BE SOLVED: To obtain an ink being excellent in water resistance and improved in print density, stability, non-plugging properties and rubbing resistance of a print by including a water-soluble compound such as N-methylglycine, N,N,N- trimethylglycine or urea, an amino acid (salt) and a polymer emulsion. SOLUTION: This ink contains a substantially water-soluble compound of formula I, II or III (wherein R1 to R4 are each H, a 1-5C hydrocarbon group or an acyl; R is a 1-5C alkylene; and M is hydrogen, an alkali metal or an alkaline earth metal), at least one compound selected from amino acids (salts therof) and a polymer emulsion. It is desirable that the compound of formula I is N-methylglycine, the compound of formula II is N,N,N-trimethylglycine, and the compound of formula III is urea, for they have high water solubility. The amino acids are desirably β-alanine and alginine. The polymer emulsion used is a colored one.

公开(公告)号：JPH10298478A

公开(公告)日：1998-11-10

申请号：JP11319897

申请日：1997-04-30

Applicant: KAO CORP

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

IPC: B41J2/01 ,  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 difficulty 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 polynuclear aromatic compounds with formalin and neutralizing the condensate. SOLUTION: The polynuclear aromatic compounds used are desirably anthracene, phenanthrene, pyrene, acenaphthene and fluorene. The mixing ratio is desirably such that the colorant, the polymeric dispersant and the aqueous medium account for 2-10 wt.%, 0.5-10 wt.% and 80-97.2 wt.%, respectively. The fluid may optionally contain microparticles having a means primary particle diameter of 5-600 m. It is also desirable that the fluid contains polyethylene glycol. It is also desirable that the fluid contains a surfactant selected among nonionic and anionic surfactants.

公开(公告)号：JPH10298477A

公开(公告)日：1998-11-10

申请号：JP11319697

申请日：1997-04-30

Applicant: KAO CORP

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

IPC: B41J2/01 ,  C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  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 with formalin and neutrlizing the condensate. SOLUTION: The aromatic compound mixture contains aromatic compounds represented by the formula (wherein R1 and R2 are each H or a 1-5C alkyl). Compounds of the formula are desirably dimethylnaphthalene, methylnaphthalene and butylnaphthalene. The mixing ratio is desirably such that the colorant, the polymeric dispersant and the aqueous medium account for 2-10 wt.%, 0.8-10 wt.% and 80-97.2 wt.%, respectively. The fluid may optionally contain microparticles having a means primary particle diameter of 5-600 nm. It is also desirable that the fluid contains polyethylene glycol and a surfactant selected among nonionic and anionic surfactants.

公开(公告)号：JPH1060329A

公开(公告)日：1998-03-03

申请号：JP21353396

申请日：1996-08-13

Applicant: KAO CORP

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

IPC: C09D11/00 ,  C09D11/023 ,  C09D11/033 ,  C09D11/037 ,  C09D11/08 ,  C09D11/10 ,  C09D11/102 ,  C09D11/106 ,  C09D11/107 ,  C09D11/108 ,  C09D11/14 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To improve the pigment dispersion stability and intermittent delivery properties of an ink contg. a pigment, a (meth)acrylic acid deriv. copolymer, a saccharide, a water-soluble solvent, and water by incorporating the saccharide into the ink under specified conditions. SOLUTION: A saccharide, pref. a mono- or disaccharide, still pref. at least one saccharide selected from among D-glucose, fructose, maltose, and saccharose, esp. pref. a saccharose, in an amt. of 0.1-5wt.%, pref. 0.1-4wt.%, is incorporated into the ink, and the wt. ratio of the (meth)acrylic acid deriv. copolymer to the saccharide is (20:1)-(1:5), pref. (10:1)-(1:4), still pref. (5:1)-(1:3).

公开(公告)号：JPH08212547A

公开(公告)日：1996-08-20

申请号：JP1608995

申请日：1995-02-02

Applicant: KAO CORP

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

IPC: C23C14/24 ,  C23C14/30 ,  G11B5/85 ,  H01F41/20

Abstract: PURPOSE: To avert the trouble by the splashing of a molten magnetic material, etc., by using a magnetic material supply device which supplies the powdery magnetic material of an extremely small weight into a crucible. CONSTITUTION: This apparatus has a vacuum vessel 1, a traveling device 2 which allows a series of materials for vapor deposition disposed in this vessel 1 to travel, a crucible 3 which is disposed below these materials for vapor deposition and houses the magnetic material therein and an electron beam generator 4 which irradiates the magnetic material in this crucible 3 with an electron beam. The crucible 3 includes the magnetic material supply device 13 which supplies the magnetic material to the crucible 3. The device 13 has a cutting means 14 for cutting the magnetic material into a powdery form, a feed means 16 for feeding the magnetic material to this cutting means 14 and a vibrating means 27 and has a transfer means 17 which receives the powdery magnetic material and feeds the magnetic material to the crucible 3 by vibration to be excited by a vibrating means 27. Since the magnetic material supply device 13 supplies the powdery magnetic material of the extremely small weight to the crucible 3 and, therefore, such a thing that the magnetic material is splashed by the impact of falling does not arise even if the magnetic material is dropped into the crucible 3 from above the crucible 3.

公开(公告)号：JPH08203074A

公开(公告)日：1996-08-09

申请号：JP944695

申请日：1995-01-25

Applicant: KAO CORP

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

IPC: C30B29/04 ,  C23C16/27 ,  C23C16/44 ,  C23C16/50 ,  C23C16/511 ,  G11B5/84

Abstract: PURPOSE: To prevent the trouble by contaminants and to efficiently produce a protective film having high quality by providing a thin film forming device with a scraping means for scraping the contaminants and immediately removing the contaminants which adversely affect film formation. CONSTITUTION: A plasma reaction tube 8 is provided with the scraping means for scraping the contaminants, such as carbon dust. The contaminants are removed from the inside wall surface of the plasma reaction tube 8 and more particularly a revolving pipe part 8b on the front end side by this scraping means. Namely, the edge of a pawl 22 mounted at a stationary pipe part comes into contact with the inside wall surface of the revolving pipe part 8b and the contaminants sticking to the inside wall surface are scraped by the pawl 22 when the revolving pipe part 8b is rotated. The contaminants (dust) scraped by the pawl 22 from the inside wall of the revolving pipe part 8b are discharged outside the revolving pipe part 8b from a slit 23 and are accumulated into a container 24 disposed under this slit 23.

公开(公告)号：JPH08180359A

公开(公告)日：1996-07-12

申请号：JP31668894

申请日：1994-12-20

Applicant: KAO CORP

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

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/65 ,  G11B5/73 ,  G11B5/735

Abstract: PURPOSE: To improve both corrosion resistance and magnetic characteristics by forming an iron-based thin film or a thin cobalt film having high magnetic energy on a base film and using a thin nickel film as the top layer of a magnetic layer. CONSTITUTION: In the continuous magnetic body type magnetic recording medium obtd. by forming a magnetic layer on a base film by vapor deposition or sputtering, the magnetic layer is composed of a ferromagnetic thin film formed on the base film PET and a thin nickel film formed on the ferromagnetic thin film. The ferromagnetic thin film is one or more layers selected from among iron-based thin films such as Fe-N-O, Fe-C-O and Fe-C-N-O films or it is made of cobalt.

公开(公告)号：JPH08161727A

公开(公告)日：1996-06-21

申请号：JP29820994

申请日：1994-12-01

Applicant: KAO CORP

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

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/65 ,  G11B5/72 ,  G11B5/73 ,  G11B5/735

Abstract: PURPOSE: To obtain a continuous magnetic body type magnetic recording medium which achieves a better output characteristic with excellent anticorrosion by increasing the ratio of nickel in a double-layer Fe-Ni metal thin film the more for a thin film with the further distance from a base film. CONSTITUTION: This magnetic recording medium has a magnetic layer. formed on a base film by evaporation or sputtering. This magnetic layer is made up of at least two layers, preferably three layers of Fe-Ni metal thin film and the ratio of nickel in the Fe-Ni metal thin film is 0-50%, preferably in a range of 5-20%. The ratio is increased the more for a film with the further distance from the base film. The thicknesses of the metal thin films range 300-1,000Å and the total thickness of the magnetic layers is 1,000-3,000Å. Furthermore, a protective film comprising diamond-like carbon is provided on the upper most layer of the metal thin film.