-
11.发明授权
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
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。
-
12.发明授权
公开(公告)号：US5717983A
公开(公告)日：1998-02-10
申请号：US385418
申请日：1995-02-08
CPC分类号： G03G13/013 , G03G13/09 , G03G15/0921 , G03G9/083 , G03G9/107
摘要： In an image forming method for developing an electrostatic latent image on an image bearing member by using a two-component magnetic developer includes the steps of supporting and conveying a magnetic developer directly on the surface of a permanent magnet with a plurality of magnetic poles provided on the surface and performing both the removal of the residual toner remaining on the surface of the image-bearing member and the development of the electrostatic latent image while rubbing said surface with said magnetic brush. The magnetic carriers in the magnetic developer have average particle sizes of 5 to 20 .mu.m and opposite to toner in polarity of charge, the magnetization .sigma..sub.1000 in a magnetic field of 1000 Oe is 50 emu/g or less. Nonspherical magnetic toner or non-magnetic toner made by a polymerization process and magnetic carriers may be used.
摘要翻译： 在通过使用双组分磁性显影剂在图像承载部件上显影静电潜像的图像形成方法包括以下步骤：将磁性显影剂直接支撑在永久磁铁的表面上，其中多个磁极设置在 表面并且同时执行残留在图像承载部件的表面上的剩余调色剂的去除和静电潜像的显影，同时用所述磁刷摩擦所述表面。 磁性显影剂中的磁性载体具有5至20μm的平均粒度并且与电荷极性与调色剂相反，在1000Oe的磁场中的磁化σ1000为50emu / g或更小。 可以使用通过聚合方法制造的非磁性调色剂或非磁性调色剂和磁性载体。
-
公开(公告)号：US06075964A
公开(公告)日：2000-06-13
申请号：US917557
申请日：1997-08-26
CPC分类号： G03G13/013 , G03G13/09 , G03G15/0921 , G03G9/083 , G03G9/107
摘要： An image forming method for developing an electrostatic latent image on a moving image-bearing member with a magnetic developer and for removing the residual toner after transfer of a developed toner image onto a transfer member is described. The method includes providing a rotatable, cylindrical permanent magnet having a plurality of magnetic poles on the surface for supporting and conveying the magnetic developer directly on the magnet surface; forming an electrostatic latent image into a toner image by attracting and conveying a magnetic developer including a nonspherical magnetic toner obtained by a polymerization or a nonspherical magnetic or non-magnetic toner obtained by a polymerization and magnetic carriers; and removing the residual toner remaining on the image-bearing member after transferring this toner image by a cleaning blade. The method also includes a surface magnetic flux density ranging from 50 to 1200 G, and a value of h, defined as .pi.D.multidot.Vp/(M.multidot.Vm), of 2 or less wherein Vp (mm/s) is the moving speed of the image-bearer, and D (mm), M, and Vm (mm/s) are the outer diameter, the number of magnetic poles, and the peripheral speed of the permanent magnet, respectively.
摘要翻译： 描述了一种使用磁性显影剂在运动图像承载部件上显影静电潜像并将显影的调色剂图像转印到转印部件上之后去除残留调色剂的图像形成方法。 该方法包括提供一种可旋转的圆柱形永磁体，其在表面上具有多个磁极，用于直接在磁体表面上支撑和传送磁性显影剂; 通过吸引和输送包含通过聚合获得的非球形磁性调色剂或通过聚合和磁性载体获得的非球形磁性或非磁性调色剂的磁性显影剂，将静电潜像形成调色剂图像; 并且通过清洁刮板转印该调色剂图像之后去除残留在图像承载部件上的残留调色剂。 该方法还包括范围为50至1200G的表面磁通密度和定义为pi DxVp /（MxVm）的h的值为2或更小，其中Vp（mm / s）是图像 - 承载体和D（mm），M和Vm（mm / s）分别是永磁体的外径，磁极数和圆周速度。
-
公开(公告)号：US5926677A
公开(公告)日：1999-07-20
申请号：US917426
申请日：1997-08-26
CPC分类号： G03G13/013 , G03G13/09 , G03G15/0921 , G03G9/083 , G03G9/107
摘要： An image forming method for developing an electrostatic latent image on an image-bearing member that moves bearing electrostatic latent images formed of a two-component magnetic developer is described. The method includes the steps of providing a rotatable cylinder for supporting and conveying said magnetic developer, the cylinder including a permanent magnet with a plurality of magnetic poles provided on the surface. Magnetic carriers in the magnetic developer are attracted and conveyed on the surface of the permanent magnet, the magnetic carriers having an average particle size of 5 to 20 .mu.m and opposite to toner in polarity of charge. A carrier particle magnetization .sigma..sub.1000 in a magnetic field of 1000 Oe so as to amount to 50 emu/g or less is also used. The method also includes a surface magnetic flux density ranging from 50 to 1200 G, and a value of h, defined as .pi.D.multidot.Vp/(M.multidot.Vm), of 2 or less wherein Vp (mm/s) is the moving speed of the image-bearer, and D (mm), M, and Vm (mm/s) are the outer diameter, the number of magnetic poles, and peripheral speed of the permanent magnet, respectively.
摘要翻译： 描述了一种图像形成方法，用于在承载由双组分磁性显影剂形成的静电潜像的运动的图像承载部件上显影静电潜像。 该方法包括以下步骤：提供用于支撑和输送所述磁性显影剂的可旋转气缸，所述气缸包括具有设置在所述表面上的多个磁极的永磁体。 磁性显影剂中的磁性载体在永磁体的表面上被吸引并输送，磁性载体的平均粒度为5〜20μm，与电荷极性与调色剂相反。 还使用在1000Oe的磁场中的载流子粒子磁化σ1000，以达到50emu / g以下。 该方法还包括范围为50至1200G的表面磁通密度和定义为pi DxVp /（MxVm）的h的值为2或更小，其中Vp（mm / s）是图像 - 承载体和D（mm），M和Vm（mm / s）分别是永磁体的外径，磁极数和圆周速度。
-
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
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
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：US6072974A
公开(公告)日：2000-06-06
申请号：US917686
申请日：1997-08-26
CPC分类号： G03G13/013 , G03G13/09 , G03G15/0921 , G03G9/083 , G03G9/107
摘要： An image forming method for operating a moving image-bearing member bearing an electrostatic latent image and a plurality of developing units disposed near the image-bearing member and being selectively operable is described. The color image forming method develops the electrostatic latent image by using a magnetic developer brush formed on the surface of a developer support and conveyance means, and includes the steps of: providing a rotating cylinder for supporting and conveying the magnetic developer, the cylinder including a permanent magnet with a plurality of magnetic poles on the cylinder surface; supplying a magnetic developer containing non-magnetic color toner for color image formation; attracting and conveying a layer of magnetic developer having a smaller thickness than the gap between the image-bearing member and the developer support and conveyance cylinder on the cylinder surface; and applying in the developing region an alternate electric field with an AC bias superimposed on a DC bias between the image-bearing member and the magnetic developer for the developing of an electrostatic latent image on the image-bearing member. The method also includes a surface magnetic flux density ranging from 50 to 1200 G, and a value of h, defined as .pi.D.multidot.V.sub.p /(M.multidot.V.sub.m), of 2 or less wherein V.sub.p (mm/s) is the moving speed of the image-bearer, and D (mm), M, and V.sub.m (mm/s) are the outer diameter, the number of magnetic poles, and the peripheral speed of the permanent magnet, respectively.
摘要翻译： 描述了用于操作承载静电潜像的运动图像承载部件和设置在图像承载部件附近并且可选择性地操作的多个显影单元的图像形成方法。 彩色图像形成方法通过使用形成在显影剂载体和输送装置的表面上的磁性显影刷来显影静电潜像，并且包括以下步骤：提供用于支撑和输送磁性显影剂的旋转圆筒，所述气缸包括 在圆筒表面上具有多个磁极的永磁体; 提供含有用于彩色图像形成的非磁性彩色调色剂的磁性显影剂; 吸引并传送具有比图像承载部件和显影剂载体和传送滚筒之间的间隙小的磁性显影剂层; 并且在显影区域中施加交替偏压叠加在图像承载部件和磁性显影剂之间的DC偏压上的交替电场，用于在图像承载部件上显影静电潜像。 该方法还包括范围为50至1200G的表面磁通密度和定义为pi DxVp /（MxVm）的h的值为2或更小，其中Vp（mm / s）是图像 - 承载体和D（mm），M和Vm（mm / s）分别是永磁体的外径，磁极数和圆周速度。
-
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
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：US5565966A
公开(公告)日：1996-10-15
申请号：US443403
申请日：1995-05-17
CPC分类号： G03G13/09 , G03G15/0921 , G03G9/0823 , G03G9/083
摘要： A sleeveless magnet roller is formed of at least magnetic powder and resin. It is so arranged that, letting a developing gap Ds be the gap between an image-bearing member for holding an electrostatic latent image and a developer conveying member and a doctor gap Dg be the gap between the developer conveying member and a developer's thickness regulating member, one obtains Ds-Dg=0.1 to 0.3 (mm) and Dg=0 to 0.4 (mm). For image formation, one- or two-component magnetic developer is used and a bias voltage, formed by superimposing AC bias voltage to DC bias voltage, is applied to the developing region.
摘要翻译： 无袖磁辊至少由磁粉和树脂形成。 这样布置使得显影间隙Ds是用于保持静电潜像的图像承载部件和显影剂传送部件之间的间隙和刮刀间隙Dg是显影剂传送部件和显影剂厚度调节部件之间的间隙 ，得到Ds-Dg = 0.1〜0.3（mm），Dg = 0〜0.4（mm）。 对于图像形成，使用单组分或双组分磁性显影剂，并且通过将AC偏置电压叠加到DC偏置电压形成的偏置电压施加到显影区域。
-
公开(公告)号：US5789129A
公开(公告)日：1998-08-04
申请号：US769432
申请日：1996-12-19
申请人： Masahisa Ochiai , Tsutomu Saitoh
发明人： Masahisa Ochiai , Tsutomu Saitoh
IPC分类号： G03G9/107
CPC分类号： G03G9/107
摘要： A ferrite carrier for use in electrophotographic development of electrostatic latent images, which comprises a ferrite particles having an average particle size of 10 to 100 .mu.m, a specific resistivity of 10.sup.6 .OMEGA..cm or more and a chemical composition represented by the following formula: ((MO).sub.Y (Li.sub.2 O).sub.1-Y).sub.1-X (Fe.sub.2 O.sub.3).sub.X wherein M is at least one metal selected from the group consisting of Mn, Ni, Zn, Cu, Co, Mg and Ba, Y is a number of 0 to 1, and (1-X)/X is 1.23 to 3. A magnetization intensity (.sigma..sub.1000) of the ferrite particle is 10 to 30 emu/g at 1000 Oe of a magnetic field strength, and a ratio (.sigma..sub.500 /.sigma..sub.S) of a magnetization intensity (.sigma..sub.500) of the ferrite particle and a saturation magnetization (.sigma..sub.S) of the ferrite particle is 0.5 or more.
摘要翻译： 一种用于静电潜像的电子照相显影的铁氧体载体，其包含平均粒径为10〜100μm的铁素体颗粒，电阻率为10 6Ω·Ω·cm以上，以及由下式表示的化学组成： （（MO）Y（Li2O）1-Y）1-X（Fe2O3）X其中M是选自Mn，Ni，Zn，Cu，Co，Mg和Ba中的至少一种金属，Y是 0〜1，（1-X）/ X为1.23〜3。铁氧体颗粒的磁化强度（σ1000）在1000Oe的磁场强度为10〜30emu / g， 铁氧体颗粒的磁化强度（σ500）和铁素体颗粒的饱和磁化强度（sigma S）为0.5以上。
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.024 秒)
