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1. 发明申请

US20090311617A1 BLACK MAGNETIC IRON OXIDE PARTICLES, MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND TWO-COMPONENT DEVELOPER 有权
标题翻译：黑色磁性氧化物颗粒，电子显影开发商和双组分开发商的磁性载体
公开(公告)号：US20090311617A1
公开(公告)日：2009-12-17
申请号：US12484318
申请日：2009-06-15
申请人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
发明人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
IPC分类号： G03G9/083
CPC分类号： G03G9/107 , G03G9/113 , G03G9/1135 , G03G9/1136
摘要： The present invention relates to black magnetic iron oxide particles having an average particle diameter of 0.05 to 2.0 μm and an electric resistance value at an applied voltage of 100 V of not less than 1×108 Ω·m; and a magnetic carrier for electrophotographic developer comprising spherical magnetic composite particles obtained by dispersing black magnetic iron oxide particles in a binder resin, wherein the magnetic carrier has an electric resistance value R100 at an applied voltage of 100 V of 1×108 to 1×1014 Ω·m, and an electric resistance value R300 at an applied voltage of 300 V which satisfies the relationship represented by the formula: 0.1≦R300/R100≦1.
摘要翻译：本发明涉及平均粒径为0.05〜2.0μm的黑色磁性氧化铁颗粒，100V的施加电压下的电阻值不小于1×10 8Ω·m。和一种用于电子照相显影剂的磁性载体，其包含通过将黑色磁性氧化铁颗粒分散在粘合剂树脂中而获得的球形磁性复合颗粒，其中该磁性载体在100V的施加电压为1×10 8至1×10 14Ω·m的电阻值R100，以及在300V的施加电压下的电阻值R300，其满足由下式表示的关系：0.1R300 / R100

2. 发明授权

US09285698B2 Black magnetic iron oxide particles, magnetic carrier for electrophotographic developer and two-component developer 有权
标题翻译：黑色磁性氧化铁颗粒，用于电子照相显影剂和双组分显影剂的磁性载体
公开(公告)号：US09285698B2
公开(公告)日：2016-03-15
申请号：US12484318
申请日：2009-06-15
申请人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
发明人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
IPC分类号： G03G9/083 , G03G9/107 , G03G9/113
CPC分类号： G03G9/107 , G03G9/113 , G03G9/1135 , G03G9/1136
摘要： Black magnetic iron oxide particles having an average particle diameter of 0.05 to 2.0 μm and an electric resistance value at an applied voltage of 100 V of not less than 1×108 Ω·cm. Also a magnetic carrier for electrophotographic developer having spherical magnetic composite particles obtained by dispersing black magnetic iron oxide particles in a binder resin. The magnetic carrier has an electric resistance value R100 at an applied voltage of 100 V of 1×108 to 1×1014 Ω·cm, and an electric resistance value R300 at an applied voltage of 300 V which satisfies the relationship represented by the formula: 0.1≦R300/R100≦1.
摘要翻译：平均粒径为0.05〜2.0μm，施加电压为100V的电阻值为1×10 8Ω·cm·cm以上的黑色磁性氧化铁粒子。还有一种用于电子照相显影剂的磁性载体，其具有通过将黑色磁性氧化铁颗粒分散在粘合剂树脂中而获得的球形磁性复合颗粒。磁载体在100V的施加电压为1×108〜1×1014＆OHgr·cm时具有电阻值R100，在300V的施加电压下的电阻值R300满足式：0.1＆nlE; R300 / R100＆nlE; 1。

3. 发明授权

US07572505B2 Black magnetic iron oxide particles having high breakdown voltage 有权
标题翻译：具有高击穿电压的黑色磁性氧化铁颗粒
公开(公告)号：US07572505B2
公开(公告)日：2009-08-11
申请号：US11785737
申请日：2007-04-19
申请人： Naoki Uchida , Ryo Iwai , Mamoru Kamigaki , Shinji Uemoto , Koso Aoki , Hiromitsu Misawa
发明人： Naoki Uchida , Ryo Iwai , Mamoru Kamigaki , Shinji Uemoto , Koso Aoki , Hiromitsu Misawa
IPC分类号： B32B5/16
CPC分类号： H01F1/36 , C01G49/08 , C01P2006/10 , C01P2006/12 , C01P2006/42 , C08K3/22 , C08K9/02 , C09C1/24 , C09D7/62 , C09D7/68 , G03G9/0833 , G03G9/0834 , G03G9/0836 , G03G9/0837 , G03G9/0838 , G03G9/107 , Y10S428/90 , Y10T428/257 , Y10T428/2991 , Y10T428/2993
摘要： The present invention relates to black magnetic iron oxide particles comprising core particles and a surface layer formed on a surface of the respective core particles which is made of a compound of at least one alkali earth metal element selected from the group consisting of Mg, Ca, Sr and Ba and an aluminum element, in which a content of the at least one alkali earth metal element present in the surface layer is from 100 ppm to 1000 ppm on the basis of a whole weight of the black magnetic iron oxide particles; a content of the aluminum element present in the surface layer is from 1000 ppm to 20000 ppm on the basis of a whole weight of the black magnetic iron oxide particles; a ratio [A/B] of the content [A (ppm)] of the aluminum element to the content [B (ppm)] of the at least one alkali earth metal element present in the surface layer is from 1 to 100; and a molded product comprising said black magnetic iron oxide particles has a breakdown voltage of not less than 400 V/cm.
摘要翻译：本发明涉及包含核心颗粒的黑色磁性氧化铁颗粒和形成在各个芯颗粒的表面上的表面层，该表面层由选自Mg，Ca， Sr和Ba以及基于黑色磁性氧化铁颗粒的总重量，表面层中存在的至少一种碱土金属元素的含量为100ppm至1000ppm的铝元素; 基于黑色磁性氧化铁颗粒的总重量，表面层中存在的铝元素的含量为1000ppm至20000ppm; 铝元素的含量[A（ppm）]与表面层中的至少一种碱土类金属元素的含量[B（ppm）]的比[A / B]为1〜100，并且包含所述黑色磁性氧化铁颗粒的成型体具有不低于400V / cm的击穿电压。

4. 发明申请

US20080206566A1 Black magnetic iron oxide particles 有权
标题翻译：黑色磁性氧化铁颗粒
公开(公告)号：US20080206566A1
公开(公告)日：2008-08-28
申请号：US12071389
申请日：2008-02-20
申请人： Shinji Uemoto , Naoki Uchida , Mamoru Kamigaki , Ryo Iwai , Hiromitsu Misawa , Koso Aoki
发明人： Shinji Uemoto , Naoki Uchida , Mamoru Kamigaki , Ryo Iwai , Hiromitsu Misawa , Koso Aoki
IPC分类号： B32B15/02
CPC分类号： C01G49/08 , C01P2004/62 , C01P2006/12 , C01P2006/42 , C01P2006/63 , C01P2006/80 , G03G9/0833 , G03G9/0834 , G03G9/0836 , G03G9/0837 , Y10S428/90 , Y10T428/2982 , Y10T428/2991
摘要： The present invention relates to a black magnetic iron oxide particles each having a polyhedral shape wherein when a percentage of dissolution of iron element based on a total amount of iron element contained in the black magnetic iron oxide particles is 50%, a percentage of dissolution of sulfur element based on a total amount of sulfur element contained in the black magnetic iron oxide particles is less than 40%.
摘要翻译：本发明涉及一种具有多面体形状的黑色磁性氧化铁颗粒，其中当铁元素溶解在黑色磁性氧化铁颗粒中所含的铁元素的总量的百分比为50％时，溶解的百分比基于黑色磁性氧化铁颗粒中所含的硫元素的总量的硫元素小于40％。

5. 发明申请

US20070254157A1 Black magnetic iron oxide particles 有权
标题翻译：黑色磁性氧化铁颗粒
公开(公告)号：US20070254157A1
公开(公告)日：2007-11-01
申请号：US11785737
申请日：2007-04-19
申请人： Naoki Uchida , Ryo Iwai , Mamoru Kamigaki , Shinji Uemoto , Koso Aoki , Hiromitsu Misawa
发明人： Naoki Uchida , Ryo Iwai , Mamoru Kamigaki , Shinji Uemoto , Koso Aoki , Hiromitsu Misawa
IPC分类号： B32B5/16 , B32B15/02
CPC分类号： H01F1/36 , C01G49/08 , C01P2006/10 , C01P2006/12 , C01P2006/42 , C08K3/22 , C08K9/02 , C09C1/24 , C09D7/62 , C09D7/68 , G03G9/0833 , G03G9/0834 , G03G9/0836 , G03G9/0837 , G03G9/0838 , G03G9/107 , Y10S428/90 , Y10T428/257 , Y10T428/2991 , Y10T428/2993
摘要： The present invention relates to black magnetic iron oxide particles comprising core particles and a surface layer formed on a surface of the respective core particles which is made of a compound of at least one alkali earth metal element selected from the group consisting of Mg, Ca, Sr and Ba and an aluminum element, in which a content of the at least one alkali earth metal element present in the surface layer is from 100 ppm to 1000 ppm on the basis of a whole weight of the black magnetic iron oxide particles; a content of the aluminum element present in the surface layer is from 1000 ppm to 20000 ppm on the basis of a whole weight of the black magnetic iron oxide particles; a ratio [A/B] of the content [A (ppm)] of the aluminum element to the content [B (ppm)] of the at least one alkali earth metal element present in the surface layer is from 1 to 100; and a molded product comprising said black magnetic iron oxide particles has a breakdown voltage of not less than 400 V/cm.
摘要翻译：本发明涉及包含核心颗粒的黑色磁性氧化铁颗粒和形成在各个芯颗粒的表面上的表面层，该表面层由选自Mg，Ca， Sr和Ba以及基于黑色磁性氧化铁颗粒的总重量，表面层中存在的至少一种碱土金属元素的含量为100ppm至1000ppm的铝元素; 基于黑色磁性氧化铁颗粒的总重量，表面层中存在的铝元素的含量为1000ppm至20000ppm; 铝元素的含量[A（ppm）]与表面层中的至少一种碱土类金属元素的含量[B（ppm）]的比[A / B]为1〜100; 并且包含所述黑色磁性氧化铁颗粒的成型体具有不低于400V / cm的击穿电压。

6. 发明授权

US07597958B2 Black magnetic iron oxide particles having a specific dissolution of sulfur element 有权
标题翻译：具有硫元素特异性溶解的黑色磁性氧化铁颗粒
公开(公告)号：US07597958B2
公开(公告)日：2009-10-06
申请号：US12071389
申请日：2008-02-20
申请人： Shinji Uemoto , Naoki Uchida , Mamoru Kamigaki , Ryo Iwai , Hiromitsu Misawa , Koso Aoki
发明人： Shinji Uemoto , Naoki Uchida , Mamoru Kamigaki , Ryo Iwai , Hiromitsu Misawa , Koso Aoki
IPC分类号： B32B5/16
CPC分类号： C01G49/08 , C01P2004/62 , C01P2006/12 , C01P2006/42 , C01P2006/63 , C01P2006/80 , G03G9/0833 , G03G9/0834 , G03G9/0836 , G03G9/0837 , Y10S428/90 , Y10T428/2982 , Y10T428/2991
摘要： The present invention relates to a black magnetic iron oxide particles each having a polyhedral shape wherein when a percentage of dissolution of iron element based on a total amount of iron element contained in the black magnetic iron oxide particles is 50%, a percentage of dissolution of sulfur element based on a total amount of sulfur element contained in the black magnetic iron oxide particles is less than 40%.
摘要翻译：本发明涉及一种具有多面体形状的黑色磁性氧化铁颗粒，其中当铁元素溶解在黑色磁性氧化铁颗粒中所含的铁元素的总量的百分比为50％时，溶解的百分比基于黑色磁性氧化铁颗粒中所含的硫元素的总量的硫元素小于40％。

7. 发明申请

US20140051020A1 MAGNETIC IRON OXIDE PARTICLES, MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPERS AND PROCESS FOR PRODUCING THE SAME, AND TWO-COMPONENT SYSTEM DEVELOPER 有权
标题翻译：电磁铁氧化物颗粒，用于电子显影开发的磁性载体及其制造方法，以及两组分系统开发商
公开(公告)号：US20140051020A1
公开(公告)日：2014-02-20
申请号：US14008323
申请日：2012-03-29
申请人： Shigenori Harada , Shinji Uemoto , Hiromitsu Misawa , Eiichi Kurita , Koso Aoki
发明人： Shigenori Harada , Shinji Uemoto , Hiromitsu Misawa , Eiichi Kurita , Koso Aoki
IPC分类号： G03G9/083
CPC分类号： G03G9/0839 , C01P2004/04 , C01P2004/45 , C01P2004/51 , C01P2004/62 , C01P2006/12 , C01P2006/42 , C01P2006/62 , C09C1/24 , G03G9/107 , G03G9/113 , G03G9/1134 , G03G9/1135 , G03G9/1136 , Y10T428/2982
摘要： The present invention provides magnetic iron oxide particles having a high bonding property to a resin as well as a magnetic carrier for electrophotographic developers which is improved in durability by enhancing adhesion between a magnetic carrier core material and a coating resin. The magnetic iron oxide particles of the present invention are magnetic iron oxide particles having an average particle diameter of 0.5 to 30 μm onto which a plurality of granules are bonded, and the magnetic carrier for electrophotographic developers according to the present invention is a magnetic carrier for electrophotographic developers which comprises spherical magnetic composite particles produced by dispersing magnetic iron oxide particles in a binder resin in which the magnetic iron oxide particles comprise at least the above magnetic iron oxide particles having an average particle diameter of 0.5 to 30 μm onto which the plurality of granules are bonded.
摘要翻译：本发明提供了具有与树脂的高粘合性能的磁性氧化铁颗粒以及用于电子照相显影剂的磁性载体，其通过增强磁性载体芯材和涂层树脂之间的粘附性来提高耐久性。本发明的磁性氧化铁颗粒是平均粒径为0.5至30μm的磁性氧化铁颗粒，多个颗粒结合到其上，本发明的电子照相显影剂用磁性载体是用于电子照相显影剂，其包含通过将磁性氧化铁颗粒分散在粘合剂树脂中制成的球形磁性复合颗粒，其中磁性氧化铁颗粒至少包含平均粒径为0.5至30μm的上述磁性氧化铁颗粒，多个颗粒结合。

8. 发明授权

US09448500B2 Magnetic iron oxide particles, magnetic carrier for electrophotographic developers and process for producing the same, and two-component system developer 有权
标题翻译：磁性氧化铁颗粒，用于电子照相显影剂的磁性载体及其制备方法，以及双组分体系显影剂
公开(公告)号：US09448500B2
公开(公告)日：2016-09-20
申请号：US14008323
申请日：2012-03-29
申请人： Shigenori Harada , Shinji Uemoto , Hiromitsu Misawa , Eiichi Kurita , Koso Aoki
发明人： Shigenori Harada , Shinji Uemoto , Hiromitsu Misawa , Eiichi Kurita , Koso Aoki
IPC分类号： G03G9/083 , C09C1/24 , G03G9/107 , G03G9/113
CPC分类号： G03G9/0839 , C01P2004/04 , C01P2004/45 , C01P2004/51 , C01P2004/62 , C01P2006/12 , C01P2006/42 , C01P2006/62 , C09C1/24 , G03G9/107 , G03G9/113 , G03G9/1134 , G03G9/1135 , G03G9/1136 , Y10T428/2982
摘要： The present invention provides magnetic iron oxide particles having a high bonding property to a resin as well as a magnetic carrier for electrophotographic developers which is improved in durability by enhancing adhesion between a magnetic carrier core material and a coating resin. The magnetic iron oxide particles of the present invention are magnetic iron oxide particles having an average particle diameter of 0.5 to 30 μm onto which a plurality of granules are bonded, and the magnetic carrier for electrophotographic developers according to the present invention is a magnetic carrier for electrophotographic developers which comprises spherical magnetic composite particles produced by dispersing magnetic iron oxide particles in a binder resin in which the magnetic iron oxide particles comprise at least the above magnetic iron oxide particles having an average particle diameter of 0.5 to 30 μm onto which the plurality of granules are bonded.
摘要翻译：本发明提供了具有与树脂的高粘合性能的磁性氧化铁颗粒以及用于电子照相显影剂的磁性载体，其通过增强磁性载体芯材和涂层树脂之间的粘附性来提高耐久性。本发明的磁性氧化铁颗粒是平均粒径为0.5-30μm的磁性氧化铁颗粒，多个颗粒结合到其上，本发明的电子照相显影剂用磁性载体是用于电子照相显影剂，其包含通过将磁性氧化铁颗粒分散在粘合剂树脂中制成的球形磁性复合颗粒，其中磁性氧化铁颗粒至少包含平均粒径为0.5至30μm的上述磁性氧化铁颗粒，颗粒结合。

9. 发明授权

US08673529B2 Magnetic carrier for electrophotographic developer and process for producing the same, and two-component system developer 有权
标题翻译：用于电子照相显影剂的磁性载体及其制备方法，以及双组分体系显影剂
公开(公告)号：US08673529B2
公开(公告)日：2014-03-18
申请号：US13377904
申请日：2010-06-15
申请人： Kaori Kinoshita , Shinji Uemoto , Eiichi Kurita
发明人： Kaori Kinoshita , Shinji Uemoto , Eiichi Kurita
IPC分类号： G03G9/113
CPC分类号： G03G9/1131 , G03G9/107 , G03G9/1133 , G03G9/1134 , G03G9/1135 , G03G9/1137
摘要： The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical composite particles comprising spherical composite core particles comprising at least ferromagnetic iron oxide fine particles and a cured phenol resin and having an average particle diameter of 1 to 100 μm, and a melamine resin coating layer formed on the respective core particles, wherein a ratio of R100 to R300 (R100/R300) in which R100 is an electric resistance value as measured when applying a voltage of 100 V to the magnetic carrier; and R300 is an electric resistance value as measured when applying a voltage of 300 V to the magnetic carrier, is controlled to lie within the range of 1 to 50. The magnetic carrier according to the present invention is capable of maintaining an adequate electric resistance value upon development, providing images having an excellent image quality, exhibiting a good durability, obtaining a good reproducibility of uniform solid image portions having a high image density, and keeping high quality images having an excellent gradation for a long period of time.
摘要翻译：本发明涉及一种用于电子照相显影剂的磁性载体，其包含球形复合颗粒，该球形复合颗粒包含至少包含铁磁性氧化铁细颗粒和固化的酚醛树脂的平均粒径为1-100μm的球形复合芯颗粒和三聚氰胺树脂形成在各个芯粒子上的涂层，其中R100与R300（R100 / R300）的比率，其中R100是当向磁性载体施加100V的电压时测量的电阻值; R300是向磁性载体施加300V的电压时测定的电阻值，被控制在1〜50的范围内。本发明的磁性载体能够保持足够的电阻值在显影时，提供具有优异图像质量的图像，表现出良好的耐久性，获得具有高图像浓度的均匀立体图像部分的良好再现性，并且保持长时间具有优异灰度的高质量图像。

10. 发明申请

US20120115078A1 MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND PROCESS FOR PRODUCING THE SAME, AND TWO-COMPONENT SYSTEM DEVELOPER 有权
标题翻译：用于电子显影开发的磁性载体及其制造方法和两组分系统开发商
公开(公告)号：US20120115078A1
公开(公告)日：2012-05-10
申请号：US13377904
申请日：2010-06-15
申请人： Kaori Kinoshita , Shinji Uemoto , Eiichi Kurita
发明人： Kaori Kinoshita , Shinji Uemoto , Eiichi Kurita
IPC分类号： G03G9/113
CPC分类号： G03G9/1131 , G03G9/107 , G03G9/1133 , G03G9/1134 , G03G9/1135 , G03G9/1137
摘要： The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical composite particles comprising spherical composite core particles comprising at least ferromagnetic iron oxide fine particles and a cured phenol resin and having an average particle diameter of 1 to 100 μm, and a melamine resin coating layer formed on the respective core particles, wherein a ratio of R100 to R300 (R100/R300) in which R100 is an electric resistance value as measured when applying a voltage of 100 V to the magnetic carrier; and R300 is an electric resistance value as measured when applying a voltage of 300 V to the magnetic carrier, is controlled to lie within the range of 1 to 50. The magnetic carrier according to the present invention is capable of maintaining an adequate electric resistance value upon development, providing images having an excellent image quality, exhibiting a good durability, obtaining a good reproducibility of uniform solid image portions having a high image density, and keeping high quality images having an excellent gradation for a long period of time.
摘要翻译：本发明涉及一种用于电子照相显影剂的磁性载体，其包含球形复合颗粒，该球形复合颗粒包含至少包含铁磁性氧化铁细颗粒和固化酚醛树脂的平均粒径为1至100μm的球形复合芯颗粒和三聚氰胺树脂形成在各个芯粒子上的涂层，其中R100与R300（R100 / R300）的比率，其中R100是当向磁性载体施加100V的电压时测量的电阻值; R300是向磁性载体施加300V的电压时测定的电阻值，被控制在1〜50的范围内。本发明的磁性载体能够保持足够的电阻值在显影时，提供具有优异图像质量的图像，表现出良好的耐久性，获得具有高图像浓度的均匀立体图像部分的良好再现性，并且保持长时间具有优异灰度的高质量图像。

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