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1. 发明专利

JPH0922815A METHOD OF FORMING EXTERNAL ELECTRODE OF CHIP PART 失效
公开(公告)号：JPH0922815A
公开(公告)日：1997-01-21
申请号：JP17201695
申请日：1995-07-07
申请人： TAIYO YUDEN KK
发明人： TAKAHASHI HIROSHI , TANAKA MASAHIRO , INAI MASAYUKI , URANO TETSUYA , NAKAMURA TOSHIYA , NAKAZAWA CHIKASHI , TANAKA KAZUYUKI , DOI KENJI
IPC分类号： H01C17/00 , H01C7/00 , H01C17/28 , H01G13/00
摘要： PROBLEM TO BE SOLVED: To provide a method for forming an external electrode of chip part where a conductive paste applied to a chip part element body in a second external electrode forming process cannot be released and the external electrode can be uniformly formed. SOLUTION: After a first external electrode forming process, a first carrier plate 3, an accommodation member 20, and a second carrier plate 3' are arranged up and down and a chip part element body 4 housed in a retention space 3c of the first carrier plate 3 is ejected to an accommodation space 23 of the accommodation member 20. A conductive paste applied in the first external electrode forming process is cooled and hardened in the accommodation space 23. In this manner, after the conductive paste 7 of the chip part element body 4 is cooled and hardened, the chip part element body 2 housed in the accommodation space 23 is pressed into a retention space 3c' of the second carrier plate 3' and the conductive paste 7 is applied to one edge portion of the chip part element body 4.

2. 发明专利

JPH0922811A METHOD OF FORMING EXTERNAL ELECTRODE OF CHIP PART 失效
公开(公告)号：JPH0922811A
公开(公告)日：1997-01-21
申请号：JP17196095
申请日：1995-07-07
申请人： TAIYO YUDEN KK
发明人： INAI MASAYUKI , TSUKADA MASABUMI , OKAMOTO MASAKI , DOI KENJI , NAKAMURA TOSHIYA , URANO TETSUYA , MATSUI HIROYUKI
IPC分类号： H01C17/00 , H01C7/00 , H01C17/28 , H01G13/00
摘要： PROBLEM TO BE SOLVED: To provide a method for forming an external electrode of chip part where the need for a push member, such as a pin, is eliminated when shifting a chip part element body from a load plate to a carrier plate and the chip part element body can be uniformly shifted to the carrier plate. SOLUTION: When shifting a chip part element body 3 housed in an accommodation space 1a of a load plate 1 to a retention space 2c of a carrier plate 2, the accommodation space 1a of the load plate 1 is arranged oppositely to the carrier plate 2 and either the load plate 2 or the carrier plate 2 is moved toward the other, thus gradually moving the chip part element body 3 to the retention space 2c against the elastic force of the carrier plate 2 and housing it in the retention space 2c.

3. 发明专利

JPH0858259A SCREEN PRINTING PLATE 失效
公开(公告)号：JPH0858259A
公开(公告)日：1996-03-05
申请号：JP21817894
申请日：1994-08-19
申请人： TAIYO YUDEN KK
发明人： URANO TETSUYA
IPC分类号： B41F15/34 , B41N1/24 , H05K3/12
摘要： PURPOSE: To obtain smooth printed matter not generating thickness irregularity such that the end part of printing paste is thickly printed as compared with other part when the printing paste supplied to a screen printing plate is extruded to a rear side from pattern aperture parts by the movement of a squeegee to be printed on matter to be printed. CONSTITUTION: A gauze material with a line diameter dl of 50μm and a center- to-center distance D of 130μm is stretched on a frame and masked with an emulsion 3 in a 2mm square so as to leave a large number of pattern aperture parts 2 to form a screen printing plate. In this screen printing plate, the gauze material of each pattern aperture part is constituted of a fine line diameter area with a line diameter of 40μm occupying a 1.2mm square area being a central part and a thick line diameter area 11 with a line diameter of 50μm being a peripheral edge part.

4. 发明专利

JPH04209758A DIELECTRIC PORCELAIN COMPOSITION 失效
公开(公告)号：JPH04209758A
公开(公告)日：1992-07-31
申请号：JP33983290
申请日：1990-11-30
申请人： TAIYO YUDEN KK
发明人： CHAZONO KOICHI , URANO TETSUYA , SHIBATA KENJI
IPC分类号： C04B35/46 , C01G51/00 , C01G53/00 , H01B3/12 , H01G4/12
摘要： PURPOSE:To obtain a large CR product even if the thickness of a dielectric porcelain layer is reduced and further enable miniaturization of capacitors by specifying a basic component, composed of BaTiO3, NbO2.5 and CoO and expressed by the formula and nickel oxide and calcium zirconate. CONSTITUTION:The aforementioned dielectric porcelain composition is formed from 100 pts.wt. basic component, 0.01-0.15 pt.wt. nickel oxide and 0.2-2.5 pts.wt. calcium zirconate. The above-mentioned basic component is expressed by the composition formula, alphaBaTiO3 betaNbO2.5 + gammaCoO [alpha is 0.95-0.99; beta is 0.006-0.042; gammais 0.002-0.02; (alpha+beta+gamma)=1].

5. 发明专利

JPH03223113A LEAD TITANATE THIN FILM AND ITS PRODUCTION 失效
公开(公告)号：JPH03223113A
公开(公告)日：1991-10-02
申请号：JP1867890
申请日：1990-01-29
申请人： TAIYO YUDEN KK
发明人： URANO TETSUYA , UEHARA TAKAYUKI , FUJIMOTO MASAYUKI
IPC分类号： C01G23/00 , H01B3/00 , H01B3/12 , H01G4/10
摘要： PURPOSE:To improve crystallizability and prevent crack by forming a film in contact with an SnO2 film on a soda-lime glass base plate in a prescribed condition using an ethanol solution containing metal alkoxides so that the ratio of Pb to Ti in the film may have a prescribe value. CONSTITUTION:Metal alkoxides, Ti(OEt)4 and Pb(OEt)2 are added to ethanol to prepare a raw material solution in which the ratio of (Pb/Ti) is adjusted to (1/4)-(4/1) (in molar ratio). And, soda-lime glass base plate having an SnO2 film on the surface thereof is prepared. The above-mentioned base plate is heated at 450-500 deg.C and the raw material solution is sprayed thereon for thermal decomposition, thus forming the objective film on the SnO2 film.

6. 发明专利

JPH0293075A FORMATION OF THIN TITANIUM OXIDE FILM 失效
公开(公告)号：JPH0293075A
公开(公告)日：1990-04-03
申请号：JP24618688
申请日：1988-09-30
申请人： TAIYO YUDEN KK
发明人： URANO TETSUYA , MURAI SHUNJI , FUJIMOTO MASAYUKI
IPC分类号： C23C18/14 , C23C18/12
摘要： PURPOSE:To easily form a uniform thin titanium oxide film by spraycoating a substrate with a stock soln. prepd. by dissolving a titanium halide in a low molecular org. compd. CONSTITUTION:A stock soln. is prepd. by dissolving a titanium halide such as titanium tetrachloride in a low molecular org. compd. such as ethanol. A substrate is spray-coated with the stock soln. and a thin titanium oxide film or a thin film having a compsn. contg. titanium oxide is formed on the substrate. At this time, the low molecular org. compd. in the stock soln. is thermally decomposed without hydrolyzing and a uniform thin titanium oxide film or a uniform thin film having a compsn. contg. titanium oxide is formed.

7. 发明专利

JPS63169707A MANUFACTURE OF MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPS63169707A
公开(公告)日：1988-07-13
申请号：JP109887
申请日：1987-01-08
申请人： TAIYO YUDEN KK
发明人： KITAORI NORIYUKI , OGAWA HITOSHI , GOTO AKIRA , URANO TETSUYA
IPC分类号： H01F1/09 , B22F1/02 , C09D5/23 , C09D7/12 , G11B5/712
摘要： PURPOSE:To obtain resistance to oxidation while improving dispersibility in a magnetic recording medium by surface oxidation-treating oxidizing magnetic powder in the presence of a dispersant. CONSTITUTION:Metallic magnetic powder and iron nitride powder are cited as oxidizing magnetic powder, and an anion active agent such as sodium oleic acid soap, potassium oleic acid soap, lauryl sulfuric ester soda salt, etc. are quoted as a dispersant. Aromatic hydrocarbon such as toluene, xylene, etc. and aliphatic hydrocarbon such as hexane, heptane, octane, etc. are preferable as an organic solvent. Oxidizing magnetic powder is immersed into the organic solvent in the presence of the dispersant, but oxidizing magnetic powder can be added into an organic solvent liquid, into which the dispersant is contained through dissolution or dispersion, in the immersion method, and oxidizing magnetic powder and the dispersant may be added to the organic solvent.

8. 发明专利

JPS6372101A IRON NITRIDE MAGNETIC POWDER 失效
公开(公告)号：JPS6372101A
公开(公告)日：1988-04-01
申请号：JP21504986
申请日：1986-09-13
申请人： TAIYO YUDEN KK
发明人： URANO TETSUYA , OGAWA HITOSHI , KITAORI NORIYUKI
IPC分类号： C01B21/06 , C09D5/23 , C09D7/12 , G11B5/706 , H01F1/11
摘要： PURPOSE:To suppress the aging deterioration of saturation magnetization caused by oxigen in the air and obtain iron nitride magnetic powder with excellent corrosion resistant properties of the saturation magnetization by a method wherein one of Zn, Ni and A and Co are contained at certain ratios to Fe. CONSTITUTION:Iron nitride magnetic powder contains one of Zn, Ni and A with ratios of 1-10 wt.%, 1-40 wt.% and 1-10 wt.% to Fe respectively and Co with ratio of 1-30 wt.% to Fe. Such magnetic powder can be produced as follows. Pure water is added to 100 g of alpha-FeOOH to make 1l of the solution. Then 17.2 g of Zn(NO3)2.6H2 O is added and stirred to control pH of the solution to be 10. Then 1.8 g of water glass is added to control the pH to be 5. Then 24.7 g of Co(NO3)2.6H2O is added to control the pH to be 10. After the solution is filtered, the remnant is dried and powdered and baked. After 4 g of the powder is kept at 500 deg.C in the N2 gas atmosphere, the N2 gas is substituted by H2 gas and, after the H2 gas is substituted by mixed gas of NH3 and H2 with the ratio NH3/H2=9/1, the mixed gas is substituted by N2 gas again and the powder is cooled to the room temperature and dipped in toluene solution. Then the powder is taken out and the contained toluence is removed by depressurization to the toluene content of 30 wt.% to obtain the iron nitride magnetic powder.

9. 发明专利

JPH10172855A LAMINATED LAYER CHIP PARTS AND CONDUCTIVE PASTE USED FOR THE PARTS 失效
公开(公告)号：JPH10172855A
公开(公告)日：1998-06-26
申请号：JP34048996
申请日：1996-12-05
申请人： TAIYO YUDEN KK
发明人： URANO TETSUYA , KANO TAKAYUKI
IPC分类号： H01G4/12 , H01B1/22
摘要： PROBLEM TO BE SOLVED: To retard occurrence of delimitation and cracking even when, for smaller laminated layer chip parts, a dielectrics layer is made to be thinner layer for increased number of layers, so that the number of interfaces between the dielectric layer and an internal electrode layer increases excessively. SOLUTION: Relating to the chip parts, an average existence percentage of common material in the internal electrode layer 10 in the cross section orthogonal to the internal electrode layer 10 is set 15-33 area %. Here, as the common material, non-baked ceramics powder of almost the same quality as a dielectric layer 12 is preferred. In addition, the conductive paste contains the common material of particle size one half or more of the thickness of internal electrode pattern at printing. Here, a non-backed ceramics powder of almost the same quality as ceramics green sheet is preferable as the common material.

10. 发明专利

JPH04209756A DIELECTRIC PORCELAIN COMPOSITION 失效
公开(公告)号：JPH04209756A
公开(公告)日：1992-07-31
申请号：JP33983090
申请日：1990-11-30
申请人： TAIYO YUDEN KK
发明人： CHAZONO KOICHI , URANO TETSUYA , SHIBATA KENJI
IPC分类号： C04B35/46 , C01G51/00 , H01B3/12 , H01G4/12
摘要： PURPOSE:To obtain a large CR product even if the thickness of a dielectric porcelain layer is reduced and further enable miniaturization of capacitors by specifying a basic component, composed of BaTiO3, NbO2.5 and CoO and expressed by the formula and magnesium oxide and barium zirconate. CONSTITUTION:The aforementioned dielectric porcelain composition is formed from 100 pts.wt. basic component, 0.01-0.25 pt.wt. magnesium oxide and 0.1-2 pts.wt. barium zirconate. The above-mentioned basic component is expressed by the composition formula alphaBaTiO3+betaNbO2.5+gammaCoO [alpha is 0.95-0.99; beta is 0.006-0.042; gamma is 0.002-0.02; (alpha+beta+gamma)=1].

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