公开(公告)号：US07384571B2

公开(公告)日：2008-06-10

申请号：US11702588

申请日：2007-02-06

申请人： Masayasu Senda ,  Shinichi Suenaga ,  Keisuke Ayabe ,  Toshiyuki Sakai

发明人： Masayasu Senda ,  Shinichi Suenaga ,  Keisuke Ayabe ,  Toshiyuki Sakai

IPC分类号： H01F1/113

CPC分类号： C01G49/0036 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12

摘要： A ferrite magnetic powder for bond magnet that experiences only small decrease in coercivity when molded into a bond magnet is provided, which is a ferrite magnetic powder that includes an alkaline-earth metal constituent and exhibits a decrease in coercivity of not greater than 600 Oe when subjected to a prescribed molding test. The magnetic powder can be obtained by mixing a fine ferrite powder of an average particle diameter of greater than 0.50 to 1.0 μm and a coarse ferrite powder of an average particle diameter of greater than 2.50 to 5.0 μm at ratio to incorporate the fine powder at a content ratio of 15-40 wt %.

摘要翻译： 提供了一种用于粘结磁体的铁氧体磁粉，其在模制成粘结磁体时仅具有小的矫顽力的降低，其是包含碱土金属组分的铁氧体磁性粉末，并且当矫顽力降低时，矫顽磁力降低不超过600Oe 进行规定的成型试验。 可以通过将平均粒径大于0.50〜1.0μm的细小铁氧体粉末和平均粒径大于2.50〜5.0μm的粗大铁素体粉末以比例混合，从而将微粉末 含量比为15-40重量％。

公开(公告)号：US20070131893A1

公开(公告)日：2007-06-14

申请号：US11702588

申请日：2007-02-06

申请人： Masayasu Senda ,  Shinichi Suenaga ,  Keisuke Ayabe ,  Toshiyuki Sakai

发明人： Masayasu Senda ,  Shinichi Suenaga ,  Keisuke Ayabe ,  Toshiyuki Sakai

IPC分类号： H01F1/26

CPC分类号： C01G49/0036 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12

摘要： A ferrite magnetic powder for bond magnet that experiences only small decrease in coercivity when molded into a bond magnet is provided, which is a ferrite magnetic powder that includes an alkaline-earth metal constituent and exhibits a decrease in coercivity of not greater than 600 Oe when subjected to a prescribed molding test. The magnetic powder can be obtained by mixing a fine ferrite powder of an average particle diameter of greater than 0.50 to 1.0 μm and a coarse ferrite powder of an average particle diameter of greater than 2.50 to 5.0 μm at ratio to incorporate the fine powder at a content ratio of 15-40 wt %.

公开(公告)号：US07255807B2

公开(公告)日：2007-08-14

申请号：US10829291

申请日：2004-04-22

申请人： Masayasu Senda ,  Shinichi Suenaga ,  Keisuke Ayabe ,  Toshiyuki Sakai

发明人： Masayasu Senda ,  Shinichi Suenaga ,  Keisuke Ayabe ,  Toshiyuki Sakai

IPC分类号： H01F1/113

CPC分类号： C01G49/0036 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12

摘要： A ferrite magnetic powder for bond magnet that experiences only small decrease in coercivity when molded into a bond magnet is provided, which is a ferrite magnetic powder that includes an alkaline-earth metal constituent and exhibits a decrease in coercivity of not greater than 600 Oe when subjected to a prescribed molding test. The magnetic powder can be obtained by mixing a fine ferrite powder of an average particle diameter of greater than 0.50 to 1.0 μm and a coarse ferrite powder of an average particle diameter of greater than 2.50 to 5.0 μm at ratio to incorporate the fine powder at a content ratio of 15-40 wt %.

摘要翻译： 提供了一种用于粘结磁体的铁氧体磁粉，其在模制成粘结磁体时仅具有小的矫顽力的降低，其是包含碱土金属组分的铁氧体磁性粉末，并且当矫顽力降低时，矫顽磁力降低不超过600Oe 进行规定的成型试验。 可以通过将平均粒径大于0.50〜1.0μm的细小铁氧体粉末和平均粒径大于2.50〜5.0μm的粗大铁素体粉末以比例混合，从而将微粉末 含量比为15-40重量％。

公开(公告)号：US20120015189A1

公开(公告)日：2012-01-19

申请号：US13258617

申请日：2010-04-09

申请人： Shinichi Suenaga ,  Kouji Hirata ,  Satoru Tsuboi ,  Keisuke Ayabe ,  Kazuyosi Horii

发明人： Shinichi Suenaga ,  Kouji Hirata ,  Satoru Tsuboi ,  Keisuke Ayabe ,  Kazuyosi Horii

IPC分类号： C01G49/02 ,  C04B35/26 ,  B32B5/16

CPC分类号： C01G49/0018 ,  C01G49/0036 ,  C01P2004/20 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  H01F1/11 ,  H01F1/113 ,  Y10T428/2982

摘要： A bonded magnet is required to have a large energy product, which is the product of magnetization Br and coercive force Hc. However, in a ferrite powder for a bonded magnet, when the particle diameter is reduced to improve the coercive force, the packing properties are impaired, and the Br is lowered.When the particle diameter is increased to improve the magnetization, the coercive force is lowered.Therefore, to increase the energy product, both the Br and Hc must be increased.A ferrite powder that has a large particle size, is composed of smooth crystals, and suffers only a small reduction in coercive force even after pressurization is obtained by mixing a fine ferrite powder having a small particle size with a ferrite powder calcined at a temperature of 1050° C. to 1300° C. in the presence of a chloride at its saturated vapor pressure and then annealing the mixture at 800° C. to 1100° C.A bonded magnet produced using the powder has an energy product of 2.0 MGOe or more.

摘要翻译： 粘结磁体需要具有大的能量积，这是磁化Br和矫顽力Hc的乘积。 然而，在用于粘结磁体的铁氧体粉末中，当降低粒径以提高矫顽力时，包装性能受损，并且Br降低。 当增加粒径以提高磁化强度时，矫顽力降低。 因此，为了增加能量产物，Br和Hc必须增加。 具有大粒径的铁氧体粉末由光滑的晶体构成，即使在通过将具有小粒径的细小铁氧体粉末与在温度为 1050℃至1300℃，在氯化物存在下，在其饱和蒸汽压下，然后将混合物在800℃下退火至1100℃。使用该粉末制备的粘结磁体具有2.0MGOe的能量积或 更多。

公开(公告)号：US08951635B2

公开(公告)日：2015-02-10

申请号：US13258617

申请日：2010-04-09

申请人： Shinichi Suenaga ,  Kouji Hirata ,  Satoru Tsuboi ,  Keisuke Ayabe ,  Kazuyosi Horii

发明人： Shinichi Suenaga ,  Kouji Hirata ,  Satoru Tsuboi ,  Keisuke Ayabe ,  Kazuyosi Horii

IPC分类号： B32B5/16

CPC分类号： C01G49/0018 ,  C01G49/0036 ,  C01P2004/20 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  H01F1/11 ,  H01F1/113 ,  Y10T428/2982

摘要： A bonded magnet is required to have a large energy product, which is the product of magnetization Br and coercive force Hc. However, in a ferrite powder for a bonded magnet, when the particle diameter is reduced to improve the coercive force, the packing properties are impaired, and the Br is lowered.When the particle diameter is increased to improve the magnetization, the coercive force is lowered.Therefore, to increase the energy product, both the Br and Hc must be increased.A ferrite powder that has a large particle size, is composed of smooth crystals, and suffers only a small reduction in coercive force even after pressurization is obtained by mixing a fine ferrite powder having a small particle size with a ferrite powder calcined at a temperature of 1050° C. to 1300° C. in the presence of a chloride at its saturated vapor pressure and then annealing the mixture at 800° C. to 1100° C.A bonded magnet produced using the powder has an energy product of 2.0 MGOe or more.

摘要翻译： 粘结磁体需要具有大的能量积，这是磁化Br和矫顽力Hc的乘积。 然而，在用于粘结磁体的铁氧体粉末中，当降低粒径以提高矫顽力时，包装性能受损，并且Br降低。 当增加粒径以提高磁化强度时，矫顽力降低。 因此，为了增加能量产物，Br和Hc必须增加。 具有大粒径的铁氧体粉末由光滑的晶体构成，即使在通过将具有小粒径的细小铁氧体粉末与在温度为 1050℃至1300℃，在氯化物存在下，在其饱和蒸汽压下，然后将混合物在800℃下退火至1100℃。使用该粉末制备的粘结磁体具有2.0MGOe的能量积或 更多。

公开(公告)号：US07390424B2

公开(公告)日：2008-06-24

申请号：US10540580

申请日：2004-02-13

申请人： Masayasu Senda ,  Shinichi Suenaga ,  Hideki Katayama

发明人： Masayasu Senda ,  Shinichi Suenaga ,  Hideki Katayama

IPC分类号： H01F1/117

CPC分类号： H01F1/117 ,  C01G49/0036 ,  C01P2006/42 ,  C09C1/22 ,  H01F1/11

摘要： A ferrite magnetic powder for bonded magnets bonded using a rubber-base resin as binder, which powder is a ferrite magnetic powder containing an alkaline earth metal and having a chlorine content of 0.05 wt % or less and a powder pH of less than 6. The magnetic powder is produced by pulverizing a calcinated product of ferrite composition containing an alkali earth metal, annealing the pulverized ferrite composition to relieve crystal strain, dispersing the annealed powder in water and adding to it a mineral acid, adding a dispersant thereto, and subjecting the dispersion to solid-liquid separation followed by vacuum drying to obtain a ferrite magnetic powder having a chlorine content of 0.05 wt % or less and a powder pH of less than 6.

摘要翻译： 用作为粘合剂的橡胶基树脂粘合的粘结磁铁的铁氧体磁粉，该粉末是含有碱土金属，氯含量为0.05重量％以下，粉末pH小于6的铁氧体磁性粉末。 通过粉碎含有碱土金属的铁素体组合物的煅烧产物，对粉碎的铁素体组合物进行退火以减轻晶体应变，将退火的粉末分散在水中并向其中加入无机酸，向其中加入分散剂，并使 分散到固液分离，然后真空干燥，得到氯含量为0.05重量％以下，粉末pH小于6的铁氧体磁性粉末。

公开(公告)号：US20060163525A1

公开(公告)日：2006-07-27

申请号：US10540580

申请日：2004-02-13

申请人： Masayasu Senda ,  Shinichi Suenaga ,  Hideki Katayama

发明人： Masayasu Senda ,  Shinichi Suenaga ,  Hideki Katayama

IPC分类号： C04B35/26 ,  C01G49/02

CPC分类号： H01F1/117 ,  C01G49/0036 ,  C01P2006/42 ,  C09C1/22 ,  H01F1/11

摘要： A ferrite magnetic powder for bonded magnets bonded using a rubber-base resin as binder, which powder is a ferrite magnetic powder containing an alkali earth metal and having a chlorine content of 0.05 wt % or less and a powder pH of less than 6. The magnetic powder is produced by pulverizing a calcinated product of ferrite composition containing an alkali earth metal, annealing the pulverized ferrite composition to relieve crystal strain, dispersing the annealed powder in water and neutralizing it with a mineral acid, adding a dispersant thereto, and subjecting the dispersion to solid-liquid separation followed by vacuum drying to obtain a ferrite magnetic powder having a chlorine content of 0.05 wt % or less and a powder pH of less than 6.

摘要翻译： 一种用橡胶基树脂作为粘合剂粘合的粘结磁体的铁氧体磁粉，该粉末是含有碱土金属，氯含量为0.05重量％以下，粉末pH小于6的铁氧体磁性粉末。 通过粉碎含有碱土金属的铁素体组合物的煅烧产物，对粉碎的铁素体组合物进行退火以减轻晶体应变，将退火的粉末分散在水中并用无机酸中和，并向其中加入分散体， 分散到固液分离，然后真空干燥，得到氯含量为0.05重量％以下，粉末pH小于6的铁氧体磁性粉末。

公开(公告)号：US5844869A

公开(公告)日：1998-12-01

申请号：US843755

申请日：1997-04-21

申请人： Shinichi Suenaga

发明人： Shinichi Suenaga

IPC分类号： H04N5/928 ,  G11B7/0037 ,  G11B20/10 ,  G11B20/12 ,  G11B27/02 ,  G11B27/034 ,  H04N5/85 ,  H04N5/926 ,  H04N5/937 ,  G11B17/22

CPC分类号： H04N5/9267 ,  G11B20/10527 ,  G11B20/1252 ,  G11B27/034 ,  G11B7/0037 ,  H04N5/85 ,  H04N5/937

摘要： A recording and reproducing apparatus is disclosed which is capable of accurately recording and reproducing an image signal and an audio signal to and from a disk even if a non-standard image signal has been supplied, the recording and reproducing apparatus having a storing unit for temporarily storing the audio signal to be recorded on a rewritable-disk-type recording medium and for outputting storage information which is information of the quantity of stored audio signals. A recording/reproducing unit changes the number of sectors of the disk type recording medium within a predetermined number of sectors to record the audio signal stored in the storage unit in synchronization with the image signal. A memory unit memorizes information of the sectors of the disk type recording medium on which the audio signals have been recorded as management information. The recording/reproducing unit reproduces the audio signal recorded on the disk type recording medium in synchronization with the image signal in accordance with management information memorized by the memory unit.

摘要翻译： 公开了一种记录和再现装置，其能够即使已经提供了非标准图像信号也能够将图像信号和音频信号正确地记录和再现到盘中，所述记录和再现装置具有用于暂时的存储单元 将要记录的音频信号存储在可重写盘型记录介质上，并输出作为所存储音频信号量的信息的存储信息。 记录/再现单元将预定数量的扇区中的盘型记录介质的扇区数改变为与图像信号同步地记录存储在存储单元中的音频信号。 存储单元存储已经记录有音频信号的盘型记录介质的扇区的信息作为管理信息。 记录/再现单元根据由存储单元存储的管理信息与图像信号同步地再现记录在盘型记录介质上的音频信号。

公开(公告)号：US20100295643A1

公开(公告)日：2010-11-25

申请号：US12733854

申请日：2008-09-26

申请人： Kazuyuki Nakaue ,  Shinichi Suenaga ,  Masahiro Kojima ,  Hiroya Ikeda ,  Satoru Tsuboi

发明人： Kazuyuki Nakaue ,  Shinichi Suenaga ,  Masahiro Kojima ,  Hiroya Ikeda ,  Satoru Tsuboi

IPC分类号： H01F3/08 ,  B32B9/00 ,  B01F15/04

CPC分类号： C04B35/2633 ,  C01G49/0018 ,  C01G49/0063 ,  C01G49/009 ,  C01P2002/52 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/2608 ,  C04B35/2683 ,  C04B35/622 ,  C04B35/626 ,  C04B35/6262 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3274 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5463 ,  C04B2235/5472 ,  C04B2235/6022 ,  C04B2235/604 ,  C04B2235/605 ,  C04B2235/767 ,  C04B2235/77 ,  H01F1/113 ,  Y10T428/2982

摘要： The present invention provides ferrite powders for bonded magnet capable of suppressing increase of SFD, while widening a particle size distribution for obtaining flowability and compressed density, and also capable of suppressing deterioration of orientation and magnetizability, and provides a process for a production magnetoplumbite-type ferrite powders containing an oxide of at least one or more kinds of transition metals selected from a group consisting of Zr, Ti, Zn, Co, Mn, and Ni, having a mean particle size of 0.20 μm or more and less than 5.00 μm, being the ferrite powders for bonded magnet with the ratio of particles having particle size of 1 μm or less being 20 mass % or more in the magnetoplumbite-type ferrite powder size distribution obtained by a laser diffraction type particle size distribution analyzer.

摘要翻译： 本发明提供了能够抑制SFD增加的粘结磁铁用铁氧体粉末，同时扩大了用于获得流动性和压缩密度的粒度分布，并且还能够抑制取向和磁化性的劣化，并且提供了一种生产磁铅矿型 含有平均粒径为0.20μm以上且小于5.00μm的选自Zr，Ti，Zn，Co，Mn和Ni中的至少一种以上的过渡金属的氧化物的铁氧体粉末， 是通过激光衍射型粒度分布分析仪获得的磁铅矿型铁氧体粉末粒度分布中的粒径为1μm以下的粒子的比例为20质量％以上的粘结磁体用铁氧体粉末。

公开(公告)号：US06684026B2

公开(公告)日：2004-01-27

申请号：US09150197

申请日：1998-09-08

申请人： Keiji Kanota ,  Shunji Okada ,  Shinichi Suenaga ,  Nobuko Fujii

发明人： Keiji Kanota ,  Shunji Okada ,  Shinichi Suenaga ,  Nobuko Fujii

IPC分类号： H04N591

CPC分类号： H04N9/8042 ,  G11B20/1252 ,  G11B27/034 ,  G11B27/105 ,  G11B27/34 ,  G11B2220/20 ,  G11B2220/2516 ,  H04N5/772 ,  H04N5/781 ,  H04N9/8063

摘要： In an information recording device, variable-speed reproduction by software control is to be enabled. To this end, the information recording device has an HDD for recording an audio/visual digital data stream with a logical sector as an accessing unit, and an AV micro-computer system 10. This AV micro-computer system 10 has, as a recording data unit, a fixed length of the audio/visual digital data stream corresponding to an integer number multiple of a frame length. The AV micro-computer system 10 allocates the recording data unit to a minimum number of the logical sectors that can record the recording data unit in its entirety, while stuffing dummy data in the remaining portion of a logical sector of the digital data stream.

摘要翻译： 在信息记录装置中，通过软件控制进行变速再现。 为此，信息记录装置具有用于记录具有逻辑扇区的音频/视频数字数据流作为访问单元的HDD和AV微计算机系统10.该AV微机系统10具有作为记录 数据单元，对应于帧长度的整数倍的音频/视频数字数据流的固定长度。 AV微型计算机系统10将记录数据单元分配给能够全部记录记录数据单元的最小数量的逻辑扇区，同时在数字数据流的逻辑扇区的剩余部分填充伪数据。