公开(公告)号：US5554479A

公开(公告)日：1996-09-10

申请号：US356064

申请日：1994-12-14

申请人： Masahisa Ochiai ,  Masumi Asanae

发明人： Masahisa Ochiai ,  Masumi Asanae

IPC分类号： G03G9/08 ,  G03G9/10 ,  G03G15/09 ,  G03G13/09

CPC分类号： G03G9/08 ,  G03G15/0921 ,  G03G9/10

摘要： An image forming method for conveying a magnetic developer 70 held on the surface of a developer conveying member 40 opposed to a image-bearing member 30 to a developing region to develops electrostatic latent images, comprises implementing as the developer conveying member 40 a semiconductive or an insulating cylindrical magnet with a plurality of heteropolar magnet poles arranged alternatively on its surface, the overall magnet being integrally formed, rotating the developer conveying member 40 to convey the magnetic developer 70 to the developing region, and using the magnetic developer 70 conveyed to the developing region to develop electrostatic bearing member latent images formed on the image-bearing member 30.This constitution allows an inexpensive sleeveless roll magnet to be used to obtain high-quality images.

摘要翻译： 用于将保持在与图像承载部件30相对的显影剂传送部件40的表面上的磁性显影剂70传送到显影区域以形成静电潜像的图像形成方法包括将显影剂传送部件40实施为半导体或 具有多个在其表面上交替布置的多极磁极的绝缘圆柱形磁体，整体磁体一体形成，使显影剂传送构件40旋转以将磁性显影剂70输送到显影区域，并使用传送到显影区域的磁性显影剂70 以形成形成在图像承载部件30上的静电承载部件潜像。这种结构允许使用便宜的无袖卷轴磁体来获得高质量的图像。

公开(公告)号：US5547795A

公开(公告)日：1996-08-20

申请号：US492866

申请日：1995-06-20

申请人： Masahisa Ochiai ,  Tsutomu Saitoh ,  Masumi Asanae

发明人： Masahisa Ochiai ,  Tsutomu Saitoh ,  Masumi Asanae

IPC分类号： G03G9/107 ,  G03G9/113

CPC分类号： G03G9/107 ,  G03G9/113 ,  G03G9/1133 ,  G03G9/1135 ,  G03G9/1136 ,  G03G2215/0609

摘要： A magnetic carrier for a developer for use in electrophotographic recording, comprising a ferromagnetic particle of an average particle size of 100 .mu.m or less, a ratio (T/a) of the minimum outer size (T) and the maximum outer size (a) of the magnetic carrier being 0.02-0.5. Since the magnetic carrier has a large specific surface area, a toner can be sufficiently charged by the magnetic toner. Therefore, a high quality printed image free from defect such as fogging, spreadness, carrier adhesion, streak, etc. can be obtained even in continuous printing of a long period of time.

摘要翻译： 一种用于电子照相记录的显影剂的磁性载体，包括平均粒度为100μm以下的铁磁性颗粒，最小外径（T）和最大外径（A）的比（T / a） ）为0.02-0.5。 由于磁性载体具有大的比表面积，所以可通过磁性调色剂使调色剂充分充电。 因此，即使在长时间的连续打印中也可以获得没有诸如雾化，蔓延，载体附着，条纹等缺陷的高质量印刷图像。

公开(公告)号：US5866289A

公开(公告)日：1999-02-02

申请号：US892587

申请日：1997-07-14

申请人： Masumi Asanae ,  Masahisa Ochiai

发明人： Masumi Asanae ,  Masahisa Ochiai

IPC分类号： G03G9/083 ,  G03G9/10 ,  G03G9/107 ,  G03G15/08 ,  G03G15/09

CPC分类号： G03G15/09 ,  G03G9/0835 ,  G03G9/107

摘要： A developer for electrostatic development, which is a mechanical mixture of a magnetic toner containing a binder resin and a magnetic powder as the essential component and a magnetic carrier having a specific volume resistance of 10.sup.9 .OMEGA..cndot. cm or more. The properties of the magnetic toner and the magnetic carrier are correlated to each other so that an average particle size of the magnetic carrier is 0.5 to 6 times an average particle size of the magnetic toner, a magnetization of the magnetic carrier is 0.5 to 4 times a magnetization of the magnetic toner, and a triboelectric charge w of the magnetic carrier (Qc) and a triboelectric charge of the magnetic toner (Qt) satisfy an equation: .vertline.Qt-Qc.vertline.=5 to 50 .mu.C/g.

摘要翻译： 用于静电显影的显影剂，其是含有粘合剂树脂的磁性调色剂和作为必需成分的磁性粉末的机械混合物，以及体积电阻为109欧姆时的磁性载体。 厘米或以上。 磁性调色剂和磁性载体的性质彼此相关，使得磁性载体的平均粒径为磁性调色剂的平均粒径的0.5〜6倍，磁性载体的磁化强度为0.5〜4倍 磁性调色剂的磁化和磁性载体（Qc）的摩擦电荷w和磁性调色剂（Qt）的摩擦电荷满足以下等式：| Qt-Qc | = 5至50μC/ g。

公开(公告)号：US5516613A

公开(公告)日：1996-05-14

申请号：US352721

申请日：1994-12-02

申请人： Masumi Asanae ,  Masahisa Ochiai ,  Tsutomu Saitoh

发明人： Masumi Asanae ,  Masahisa Ochiai ,  Tsutomu Saitoh

IPC分类号： G03G9/083 ,  G03G9/10 ,  G03G9/107

CPC分类号： G03G9/10 ,  G03G9/083 ,  G03G9/107 ,  G03G2215/0609

摘要： A binary developer is composed of a carrier and a magnetic toner. The carrier consists of nonspherically formed magnetic particles having an average diameter of 5 to 100 .mu.m, preferably 5 to 50 .mu.m. The magnetic toner is formed to have an average particle diameter of 10 .mu.m or less and a saturated magnetization .sigma..sub.s of 50 emu/g or less.

摘要翻译： 二元显影剂由载体和磁性调色剂组成。 载体由平均直径为5至100μm，优选5至50μm的非形式形成的磁性颗粒组成。 磁性调色剂的平均粒径为10μm以下，饱和磁化σs为50emu / g以下。

公开(公告)号：US5634182A

公开(公告)日：1997-05-27

申请号：US589393

申请日：1996-01-22

申请人： Masumi Asanae ,  Masahisa Ochiai

发明人： Masumi Asanae ,  Masahisa Ochiai

IPC分类号： G03G13/09 ,  G03G15/09

CPC分类号： G03G13/09 ,  G03G15/0921

摘要： A method of developing an electrostatic latent image on a rotating image-bearing member with a magnetic developer in which a developing roll consist of only a permanent magnet member and the peripheral speed of the developing roll is regulated to be nearly equal to the moving speed of an image-bearing member. With such a construction, an electrophotographic recording apparatus can be miniaturized while producing an image of high quality.

摘要翻译： 将显影辊仅由永久磁铁构件构成的显影辊和显影辊的圆周速度调整为使磁性显影剂旋转的图像承载构件上的静电潜像的显影方法几乎等于 图像承载构件。 利用这种结构，电子照相记录装置可以小型化，同时产生高品质的图像。

公开(公告)号：US5559541A

公开(公告)日：1996-09-24

申请号：US502066

申请日：1995-07-14

申请人： Masumi Asanae ,  Masahisa Ochiai ,  Koji Noguchi

发明人： Masumi Asanae ,  Masahisa Ochiai ,  Koji Noguchi

IPC分类号： B41J2/385 ,  G03G9/08 ,  G03G9/083 ,  G03G15/05 ,  G03G15/08 ,  G03G15/34 ,  B41J2/06

CPC分类号： G03G15/346 ,  G03G9/0821

摘要： In a direct recording method, toner supplied on a toner carrier contains at least fixing resin and magnetic grain, and has an apparent density of 0.5 g/cc or more and an angle of repose of 45.degree. or less. The magnetic flux density on the toner carring member is 600 gauss or more. A doctor blade located in opposition to the toner carring member is used to restrain the thickness of toner layer formed on the toner carring member to 5 to 100 .mu.m. When performing recording on a recording body with this invention, the image density is improved and fogging is eliminated.

摘要翻译： 在直接记录方法中，供给到调色剂载体上的调色剂至少含有固定树脂和磁性颗粒，其表观密度为0.5g / cc以上，休止角为45°以下。 调色剂承载构件上的磁通密度为600高斯或更高。 使用与调色剂承载构件相对的刮刀，将形成在调色剂承载构件上的调色剂层的厚度限制在5至100μm。 当利用本发明在记录体上进行记录时，改善了图像浓度，消除了雾化。

公开(公告)号：US5876893A

公开(公告)日：1999-03-02

申请号：US805609

申请日：1997-02-25

申请人： Masahisa Ochiai ,  Masumi Asanae ,  Tsutomu Saitoh ,  Takashi Hayano

发明人： Masahisa Ochiai ,  Masumi Asanae ,  Tsutomu Saitoh ,  Takashi Hayano

IPC分类号： G03G9/08 ,  G03G9/10 ,  G03G9/107

CPC分类号： G03G9/10 ,  G03G9/0823 ,  G03G9/107

摘要： An Li--Mn ferrite carrier comprising 2 to 15 mol % of Li.sub.2 O, 5 to 30 mol % of MnO and 60 to 90 mol % of Fe.sub.2 O.sub.3. The carrier may contain at least one sintering aid selected from the group consisting of CaO, Na.sub.2 O, SiO.sub.2, V.sub.2 O.sub.5, Al.sub.2 O.sub.3, As.sub.2 O.sub.3, Bi.sub.2 O.sub.3, Sb.sub.2 O.sub.3 and B.sub.2 O.sub.3 to improve the surface properties thereof. The carrier may be made sensitive to the intensity of electric field by regulating the specific volume resistivities at 200 V/cm and 10 kV/cm within the specific ranges. This carrier is particularly suitable in the reversal developing method, and in the developing method where an A.C. bias voltage is superimposed to a D.C. bias voltage.

摘要翻译： 包含2至15mol％的Li 2 O，5至30mol％的MnO和60至90mol％的Fe 2 O 3的Li-Mn铁氧体载体。 载体可以含有至少一种选自CaO，Na 2 O，SiO 2，V 2 O 5，Al 2 O 3，As 2 O 3，Bi 2 O 3，Sb 2 O 3和B 2 O 3的烧结助剂以改善其表面性质。 可以通过在特定范围内通过调节200V / cm和10kV / cm的比体积电阻率来使载体对电场强度敏感。 该载体特别适用于反转显影方法，并且在将直流偏置电压叠加到直流偏置电压的显影方法中。

公开(公告)号：US5786120A

公开(公告)日：1998-07-28

申请号：US934662

申请日：1997-09-22

申请人： Masumi Asanae ,  Masahisa Ochiai

发明人： Masumi Asanae ,  Masahisa Ochiai

IPC分类号： G03G9/083 ,  G03G9/08 ,  G03G9/087 ,  G03G9/10 ,  G03G9/107

CPC分类号： G03G9/08 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/083 ,  G03G9/10 ,  G03G9/107

摘要： A two-component magnetic developer containing a magnetic iron carrier and a non-magnetic or magnetic toner. The magnetic iron carrier is non-spherical in its shape and has an average particle size of 5-100 .mu.m. The non-magnetic or magnetic toner has an average particle size of 2-9 .mu.m and is produced by polymerizing a monomer for a binder resin. The toner concentration in the developer is 2-70 weight % in case of containing the non-magnetic toner and 10-90 weight % for the developer containing the magnetic toner.

摘要翻译： 含有磁性铁载体和非磁性或磁性调色剂的双组分磁性显影剂。 磁铁载体的形状为非球形，平均粒径为5-100μm。 非磁性或磁性调色剂具有2-9μm的平均粒度，并且通过聚合用于粘合剂树脂的单体制备。 在含有非磁性调色剂的情况下，显影剂中的调色剂浓度为2-70重量％，含有磁性调色剂的显影剂为10-90重量％。

公开(公告)号：US5669051A

公开(公告)日：1997-09-16

申请号：US627182

申请日：1996-04-03

申请人： Masahisa Ochiai ,  Tsutomu Saitoh ,  Masumi Asanae

发明人： Masahisa Ochiai ,  Tsutomu Saitoh ,  Masumi Asanae

IPC分类号： G03G9/10 ,  G03G13/09 ,  G03G15/08 ,  G03G15/09

CPC分类号： G03G9/10 ,  G03G13/09

摘要： A method in which a photoconductive surface is charged to a uniform potential by a charging brush and a two-component magnetic developer is directly attracted on the surfaced of a sleeve-less developing roll formed from a permanent magnet member and transported by the rotation of the permanent magnet member. An electrostatic latent image is developed with the transported magnetic developer in a developing zone to form a visual toner image on the photoconductive drum. The toner image is transferred to a recording sheet by a transfer roll and permanently fixed thereon by a suitable fixing means. The specific volume resistance of the magnetic carrier is restricted to a particular range to prevent the magnetic carrier from adhering to the photoconductive surface.

摘要翻译： 通过充电刷和双组分磁性显影剂将光电导表面充电至均匀电位的方法直接吸引在由永磁体构件形成的无套筒显影辊的表面上，并通过旋转 永磁体。 在显影区域中用传送的磁性显影剂显影静电潜像，以在感光鼓上形成视觉调色剂图像。 调色剂图像通过转印辊转印到记录纸上，并通过合适的固定装置永久地固定在记录纸上。 磁性载体的比体积电阻被限制在特定的范围，以防止磁性载体粘附到光电导表面上。

公开(公告)号：US07439003B2

公开(公告)日：2008-10-21

申请号：US11136384

申请日：2005-05-25

申请人： Seijirou Ishimaru ,  Sadaaki Yoshida ,  Yoshimichi Katagiri ,  Masahisa Ochiai

发明人： Seijirou Ishimaru ,  Sadaaki Yoshida ,  Yoshimichi Katagiri ,  Masahisa Ochiai

IPC分类号： G03G9/083

CPC分类号： G03G9/0926 ,  G03G9/0821 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08755 ,  G03G9/0918

摘要： A magnetic black toner for electrophotography comprising a binding resin, a magnetic substance, and a pigment, wherein the pigment is at least one of phthalocyanine pigment and Mn containing hematite, and the content ratio of the magnetic substance and the pigment in the toner satisfy the following formulae: 10≦A≦30, 0.1≦B≦3, 5≦C≦40, wherein A denotes the content ratio (mass %) of the magnetic substance in the toner, B denotes the content ratio (mass %) of the phthalocyanine pigment in the toner, and C denotes the content ratio (mass %) of the Mn containing hematite in the toner.

摘要翻译： 一种用于电子照相的磁性黑色调色剂，包括粘合树脂，磁性物质和颜料，其中颜料是酞菁颜料和含有赤铁矿中的至少一种，并且调色剂中磁性物质和颜料的含量比满足 其中A表示调色剂中磁性物质的含量比（质量％），B表示含量比（质量％）， （质量％），C表示调色剂中的含锰赤铁矿的含量比（质量％）。