公开(公告)号：US5837413A

公开(公告)日：1998-11-17

申请号：US975460

申请日：1997-11-21

申请人： Yoshio Yada ,  Naoki Ito

发明人： Yoshio Yada ,  Naoki Ito

IPC分类号： G03G9/097 ,  G03G9/083

CPC分类号： G03G9/09725 ,  G03G9/09708 ,  G03G9/09791

摘要： The invention provides a magnetic toner for electrophotography in which an ultrafine particle form of titanium oxide (having a specific surface area of 80 to 120 m.sup.2 /g, a degree of hydrophobicity of 50 to 80% by weight, and an alumina content of 0.4 to 1.1% by weight) made hydrophobic on its surface with an aluminum compound of a fatty acid, and a hydrophobic silica are externally added onto a magnetic toner particle, and which can provide images of high density and high quality over an extended period, with no filming observed on a photosensitive material. The invention also provides a developer for electrophotography in which 10 to 40 parts by weight of a carrier particle are mixed with 100 parts by weight of a magnetic toner wherein an ultrafine particle form of titanium oxide (having a specific surface area of 80 to 120 m.sup.2 /g, a degree of hydrophobicity of 50 to 80% by weight, and an alumina content of 0.4 to 1.1% by weight) made hydrophobic on its surface with an aluminum compound of a fatty acid, and a hydrophobic silica are externally added onto a magnetic toner particle, and which has high transfer efficiency, and can provide images of high density and high quality over an extended period, with no solid black image tone variations observed even at high temperature and humidity.

摘要翻译： 本发明提供一种用于电子照相的磁性调色剂，其中，将超微粒子形式的氧化钛（比表面积为80〜120m 2 / g，疏水度为50〜80重量％，氧化铝含量为0.4〜 1.1重量％）在其表面上用脂肪酸的铝化合物制成疏水性，并且疏水性二氧化硅外部加入到磁性调色剂颗粒上，并且可以在长时间内提供高密度和高质量的图像，没有 在感光材料上观察到成膜。 本发明还提供一种用于电子照相的显影剂，其中将10至40重量份的载体颗粒与100重量份的磁性调色剂混合，其中超细颗粒形式的氧化钛（比表面积为80至120μm2 / g，疏水性为50〜80重量％，氧化铝含量为0.4〜1.1重量％）在其表面上用脂肪酸的铝化合物疏水化，并且疏水性二氧化硅被外部加入到 磁性调色剂颗粒，并且具有高转印效率，并且可以在长时间内提供高密度和高质量的图像，即使在高温和高湿度下也不会观察到固体黑色图像色调变化。

公开(公告)号：US4053143A

公开(公告)日：1977-10-11

申请号：US610077

申请日：1975-09-03

申请人： Akira Hosokawa ,  Yukifusa Miyazaki ,  Yoshio Yada ,  Yasuo Kitamura ,  Masasi Takeda

发明人： Akira Hosokawa ,  Yukifusa Miyazaki ,  Yoshio Yada ,  Yasuo Kitamura ,  Masasi Takeda

IPC分类号： B01F7/08 ,  B29B7/00 ,  B29C47/00 ,  B29C47/60 ,  B30B11/24

CPC分类号： B29C47/60 ,  B29C47/0009

摘要： There is provided a screw for use in an extruder comprising a melting section and a metering section and a decompression section therebetween so that the head pressure profile along the longitudinal direction of the extruder is higher than atmospheric pressure and has an inflection point, with the result that a high melting performance is attained and a high extrusion stability is ensured even at a high extrusion rate.

公开(公告)号：US4601872A

公开(公告)日：1986-07-22

申请号：US600905

申请日：1984-04-16

申请人： Yoshio Yada ,  Yasumasa Tamai ,  Tsugio Iwama

发明人： Yoshio Yada ,  Yasumasa Tamai ,  Tsugio Iwama

IPC分类号： G21C7/16 ,  G21C13/028 ,  G21C17/00 ,  G21C19/20

CPC分类号： G21C13/028 ,  G21C17/00 ,  Y02E30/40

摘要： A water sealing device suitable for use when a control rod drive housing welded to a stub tube and extends through a wall of a reactor pressure vessel is replaced, singly or with the stub tube, by a new one, including a sealing cylinder temporarily inserted in a control rod guide tube opening for providing a cylindrical space in which the control rod drive housing is located to shut out water in a core from the vicinity of the control rod drive housing. The sealing cylinder has a centering mechanism including a tester support portion located on an inner peripheral surface of the sealing cylinder for supporting an alignment tester for testing the alignment of centering targets mounted on upper and lower end portions of the control rod drive housing, and a tapered centering portion mounted on an outer peripheral surface of the sealing cylinder and brought into contact with a wall of the control rod guide tube opening when the sealing cylindr is temporarily inserted therein, to mount the sealing cylinder concentrically in the control rod guide tube opening through the tapered centering portion. The sealing cylinder also has a multiple seal located at a lower end portion of the sealing cylinder to allow the sealing cylinder to be brought into sealing contact with an inner wall surface of the reactor pressure vessel. Compressed air is introduced into a space in the multiple seal through the sealing cylinder.

摘要翻译： 一种适用于当焊接到短管并延伸通过反应堆压力容器的壁的控制棒驱动器壳体被单独地或与短管更换的新的封闭装置时，其包括临时插入的密封圆筒 用于提供控制棒驱动器壳体所在的圆柱形空间的控制杆引导管开口，以从控制杆驱动器壳体的附近封闭芯中的水。 密封圆筒具有定心机构，其包括位于密封圆筒的内周面上的测试器支撑部分，用于支撑用于测试安装在控制棒驱动壳体的上端部和下端部上的定中心的对准的定位测试器，以及 锥形定心部分安装在密封圆筒的外周表面上，当密封圆柱体暂时插入其中时与控制棒导向管开口的壁接触，将密封圆筒同心地安装在控制棒导管开口中 锥形对中部分。 密封圆筒还具有位于密封圆筒的下端部的多重密封件，以使密封圆筒与反应堆压力容器的内壁表面密封接触。 压缩空气通过密封圆筒引入多重密封件的空间。