公开(公告)号：US06592803B2

公开(公告)日：2003-07-15

申请号：US09750165

申请日：2000-12-29

申请人： Akihiko Nakazawa ,  Hiroyuki Kobayashi ,  Minoru Shimojo ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe ,  Takashi Kusaba ,  Hidekazu Matsuda

发明人： Akihiko Nakazawa ,  Hiroyuki Kobayashi ,  Minoru Shimojo ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe ,  Takashi Kusaba ,  Hidekazu Matsuda

IPC分类号： B29C4904

CPC分类号： G03G15/65 ,  B29C47/0023 ,  B29C47/065 ,  B29C47/26 ,  B29C47/263 ,  B29K2995/0005 ,  B29L2009/00 ,  B29L2031/7092 ,  G03G15/162 ,  G03G2215/00683 ,  Y10T428/24802

摘要： A process produces a belt-shaped member to be used in an image-forming apparatus is disclosed in which a toner image held on a latent-image-bearing member is electrostatically transferred under application of a voltage via the belt-shaped transfer member. The process includes the steps of melt-extruding a material containing a thermoplastic resin, from a circular die into a cylindrical film; forming the resultant cylindrical film by stretching in such a way that the cylindrical film comes to have a thickness smaller than the die gap of the circular die; and cutting the cylindrical film thus formed, into a seamless belt having a thickness of from 40 &mgr;m to 300 &mgr;m and a modulus in tension of 600 MPa or higher. The stretched cylindrical film is formed to have a thickness not larger than ⅓ of the die gap of the circular die. A belt-shaped transfer member may be produced by the above-described process. The so-produced belt-shaped transfer member is usable as a transfer belt in an image-forming apparatus in which a toner image held on a latent-image-bearing member is electrostatically transferred under application of a voltage via the belt-shaped transfer member.

摘要翻译： 公开了一种在图像形成装置中使用的带状构件，其中保持在潜像承载构件上的调色剂图像经由带状转印构件施加电压而被静电转印。 该方法包括将包含热塑性树脂的材料从圆形模头熔融挤出成圆筒形薄片的步骤; 通过使圆柱形薄膜的厚度比圆形模具的模具间隙小的方式进行拉伸来形成所得到的圆柱形薄膜; 并将由此形成的圆筒形薄膜切割成厚度为40μm至300μm，张力模量为600MPa或更高的无缝带。 拉伸的圆筒形薄膜形成为不大于圆形模头的模具间隙的1/3的厚度。 可以通过上述方法制造带状转印构件。 所生产的带状转印部件可用作图像形成装置中的转印带，其中保持在潜像承载部件上的调色剂图像经由带状转印部件施加电压而静电转印 。

公开(公告)号：US06487387B2

公开(公告)日：2002-11-26

申请号：US09981708

申请日：2001-10-19

申请人： Takashi Kusaba ,  Akihiko Nakazawa ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe ,  Hidekazu Matsuda

发明人： Takashi Kusaba ,  Akihiko Nakazawa ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe ,  Hidekazu Matsuda

IPC分类号： G03G1501

CPC分类号： G03G15/161 ,  G03G2215/0119 ,  G03G2215/0177

摘要： A full-color image forming apparatus for forming an image on a transfer material by transferring a toner image formed on an image bearing member onto the transfer material includes a belt-shaped transfer member for transferring a toner image from the image bearing member onto a transfer material, and a cleaning blade for cleaning the belt-shaped transfer member by being brought into contact therewith. Shape coefficients SF-1 and SF-2 of a toner for forming the toner image have values of 100≦SF-1≦125, and 100≦SF-2≦125, respectively. The belt-shaped transfer member has a seamless shape in which a seam is absent. An amount of abrasion of a surface of the belt-shaped transfer member is equal to or less than 10.0 mg. An angle of contact with respect to water of the belt-shaped transfer member is at least 60°. A slide resistance of a surface of the belt-shaped transfer member is equal to or less than 1 N.

摘要翻译： 通过将形成在图像承载部件上的调色剂图像转印到转印材料上而在转印材料上形成图像的全色图像形成装置包括用于将调色剂图像从图像承载部件转印到转印材料上的带状转印部件 材料和用于通过与其接触来清洁带状转印构件的清洁刮板。 用于形成调色剂图像的调色剂的形状系数SF-1和SF-2分别具有100 <= SF-1 <= 125和100 <= SF-2 <= 125的值。 带状转印部件具有不存在接缝的无缝形状。 带状转印体的表面的磨损量为10.0mg以下。 相对于带状转印部件的水的接触角度为至少60°。 带状转印构件的表面的滑动阻力等于或小于1N。

公开(公告)号：US6144830A

公开(公告)日：2000-11-07

申请号：US780773

申请日：1997-01-09

申请人： Takashi Kusaba ,  Hiroyuki Kobayashi ,  Minoru Shimojo ,  Akihiko Nakazawa ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe

发明人： Takashi Kusaba ,  Hiroyuki Kobayashi ,  Minoru Shimojo ,  Akihiko Nakazawa ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe

IPC分类号： G03G15/16 ,  G03G15/00

CPC分类号： G03G15/162

摘要： An intermediate transfer member is formed by at least a base layer and a surface layer. The base layer is formed by epichlorohydrin rubber and acrylonitrile-butadiene rubber mixed in a certain weight ratio (preferably 1:9 to 9:1). The surface layer is formed by urethane resin or elastomer and a fluorine-containing compound powder. The fluorine-containing compound powder may preferably be contained in an amount of 20-80 wt. % based on the surface layer. The intermediate transfer member is suitable for full-color image formation by electrophotography and is effective in improving a transfer performance and providing clear images without causing transfer failure even in repetitive use for a long period.

摘要翻译： 中间转印部件至少由基底层和表面层形成。 基层由表氯醇橡胶和以一定重量比（优选1:9至9:1）混合的丙烯腈 - 丁二烯橡胶形成。 表层由聚氨酯树脂或弹性体和含氟化合物粉末形成。 含氟化合物粉末的含量优选为20〜80重量％。 基于表面层的％。 中间转印部件适用于通过电子照相法进行全色图像形成，并且即使在长时间的重复使用中也能有效地提高转印性能并提供清晰的图像而不引起转印失败。

公开(公告)号：US5854365A

公开(公告)日：1998-12-29

申请号：US575142

申请日：1995-12-19

申请人： Manabu Ohno ,  Akihiko Nakazawa ,  Nobuyuki Okubo ,  Shunji Suzuki ,  Hiroyuki Suematsu ,  Masayoshi Kato

发明人： Manabu Ohno ,  Akihiko Nakazawa ,  Nobuyuki Okubo ,  Shunji Suzuki ,  Hiroyuki Suematsu ,  Masayoshi Kato

IPC分类号： C08L101/00 ,  C08F4/38 ,  G03G9/087 ,  G03G9/097

CPC分类号： G03G9/08791 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/09783

摘要： The present invention relates a toner for developing electrostatic images, comprising: a resin composition, which contains a binder resin and low molecular weight wax, and a coloring agent, wherein the binder resin does not substantially contain insoluble tetrahydrofuran (THF) component, its chromatograph measured with soluble tetrahydrofuran (THF) component has a main peak in a region of a molecular weight of 2,000 to 30,000 and a subpeak or a shoulder in a high molecular weight region of a molecular weight of 100,000 or more, a ratio of weight average molecular weight (Mw)/number average molecular weight (Mn) thereof is 30 or more, the high molecular weight region has a crosslinking monomer unit as a component monomer unit and the binder resin contains high molecular weight polymer having a Mw of 1,200,000 or more polymerized by using both polyfunctional initiator and a mono-functional initiator. Moreover, the present invention relates to a method of manufacturing a resin composition for producing a toner.

公开(公告)号：US5842080A

公开(公告)日：1998-11-24

申请号：US813678

申请日：1997-03-07

申请人： Tsunenori Ashibe ,  Hiroyuki Kobayashi ,  Akihiko Nakazawa ,  Atsushi Tanaka ,  Takashi Kusaba

发明人： Tsunenori Ashibe ,  Hiroyuki Kobayashi ,  Akihiko Nakazawa ,  Atsushi Tanaka ,  Takashi Kusaba

IPC分类号： G03G15/00 ,  G03G15/16 ,  G03G15/01

CPC分类号： G03G15/0173 ,  G03G15/162 ,  G03G15/5058 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0177

摘要： An image forming apparatus includes: a first image-bearing member, an intermediate transfer member for receiving an image formed on the first image-bearing member and transferring the image onto a second image-bearing member, pattern-forming means for forming a prescribed pattern on the intermediate transfer member, density detection means for detecting a density of the pattern, and control means for controlling image forming conditions based on the detected density. The intermediate transfer member is set to have a reflectance of 10-70% for light having a wavelength in the range of 700-1500 nm at least in a region thereof for forming the prescribed pattern. As a result, the pattern density detection is suitably performed on the intermediate transfer member for all of yellow, magenta cyan and black, and the detected density data is used for controlling the image forming conditions.

摘要翻译： 图像形成装置包括：第一图像承载部件，用于接收形成在第一图像承载部件上的图像并将图像转印到第二图像承载部件上的中间转印部件，用于形成规定图案的图案形成装置 在中间转印部件上，用于检测图案的浓度的浓度检​​测装置，以及用于基于检测到的浓度来控制图像形成条件的控制装置。 至少在其形成规定图案的区域中，对于具有在700-1500nm范围内的波长的光，中间转印部件被设定为具有10-70％的反射率。 结果，对于所有黄色，品红色青色和黑色的中间转印部件，适当地执行图案密度检测，并且检测的浓度数据用于控制图像形成条件。

公开(公告)号：US5364720A

公开(公告)日：1994-11-15

申请号：US135974

申请日：1993-10-14

申请人： Akihiko Nakazawa ,  Masayoshi Kato ,  Manabu Ohno ,  Nobuyuki Okubo ,  Shunji Suzuki

发明人： Akihiko Nakazawa ,  Masayoshi Kato ,  Manabu Ohno ,  Nobuyuki Okubo ,  Shunji Suzuki

IPC分类号： G03G9/083 ,  G03G9/087

CPC分类号： G03G9/0836 ,  G03G9/0839 ,  G03G9/08797

摘要： A magnetic developer for developing electrostatic images is constituted by magnetic toner particles, each containing a binder resin having a melt viscosity of at most 5.0.times.10.sup.6 poise at 150.degree. C. and a magnetic material. The magnetic material is blended with a proportion (C) [wt. %] of inorganic fine particles based on the magnetic material to carry 0.2-5 wt. % of the inorganic fine particles secured to the magnetic material surface. The magnetic material has a specific surface area (A) [m.sup.2 /g] before securing of the inorganic fine particles and is provided with an increase in surface area (B) [m.sup.2 /g] by the securing of the inorganic fine particles; wherein the parameters A, B and C satisfy the following formulae (1) and (2):0.1.ltoreq.B/A.ltoreq.0.8 (1)B

摘要翻译： 用于显影静电图像的磁性显影剂由磁性调色剂颗粒构成，每个磁性调色剂颗粒含有在150℃下熔体粘度至多为5.0×10 6泊的粘合剂树脂和磁性材料。 将磁性材料与（C）[wt。 ％]基于磁性材料的无机细颗粒携带0.2-5重量％ ％的无机细颗粒固定在磁性材料表面上。 磁性材料在固定无机细颗粒之前具有比表面积（A）[m2 / g]，并且通过确保无机细颗粒而使表面积（B）[M2 / g]增加。 其中参数A，B和C满足下列公式（1）和（2）：0.1

公开(公告)号：US07208211B2

公开(公告)日：2007-04-24

申请号：US09954252

申请日：2001-09-18

申请人： Atsushi Tanaka ,  Akihiko Nakazawa ,  Tsunenori Ashibe ,  Takashi Kusaba ,  Hidekazu Matsuda

发明人： Atsushi Tanaka ,  Akihiko Nakazawa ,  Tsunenori Ashibe ,  Takashi Kusaba ,  Hidekazu Matsuda

IPC分类号： B32B1/08 ,  B32B27/08 ,  G03G15/16 ,  G03G15/01 ,  G03G13/00

CPC分类号： G03G5/14765 ,  G03G5/10 ,  G03G5/104 ,  G03G5/14752 ,  G03G7/0046 ,  G03G15/162 ,  G03G15/1685 ,  G03G2215/0119 ,  G03G2215/0177 ,  Y10T428/1352 ,  Y10T428/139 ,  Y10T428/1397

摘要： In an electrophotographic belt member comprising a resin composition, the resin composition contains from 30% by weight to 90% by weight of a thermoplastic resin, from 2% by weight to 30% by weight of a compound selected from the group consisting of a polyether-ester amide, a polyether ester and a polyether amide, from 0% by weight to 5% by weight of an electrolyte, and from 2% by weight to 50% by weight of an insulating filler. Also disclosed are a process for producing the electrophotographic belt member, and an electrophotographic apparatus having the electrophotographic belt member.

摘要翻译： 在包含树脂组合物的电子照相带材构件中，树脂组合物含有30重量％至90重量％的热塑性树脂，2重量％至30重量％的选自聚醚 酯酯酰胺，聚醚酯和聚醚酰胺，0重量％至5重量％的电解质和2重量％至50重量％的绝缘填料。 还公开了一种用于生产电子照相皮带部件的方法，以及具有该电子照相皮带部件的电子照相设备。

公开(公告)号：US20070014943A1

公开(公告)日：2007-01-18

申请号：US11533179

申请日：2006-09-19

申请人： Minoru Shimojo ,  Hiroyuki Kobayashi ,  Akihiko Nakazawa ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe ,  Takashi Kusaba ,  Hidekazu Matsuda

发明人： Minoru Shimojo ,  Hiroyuki Kobayashi ,  Akihiko Nakazawa ,  Akira Shimada ,  Atsushi Tanaka ,  Tsunenori Ashibe ,  Takashi Kusaba ,  Hidekazu Matsuda

IPC分类号： B41M5/40

CPC分类号： B32B1/08 ,  B29C48/0018 ,  B29C48/0019 ,  B29C48/09 ,  B29C48/10 ,  B29C48/15 ,  B29C48/21 ,  B29C48/30 ,  B29C48/335 ,  Y10T428/139

摘要： A process is disclosed producing an intermediate transfer member used in an image-forming apparatus in which an image formed on a first image-bearing member is transferred to a second image-bearing member. The process has the steps of melt-extruding an extrusion material from a circular die by means of an extruder and thereafter making the same into a desired shape to obtain a cylindrical extruded product, and forming the resultant cylindrical extruded product into the intermediate transfer member. The cylindrical extruded product contains a thermoplastic resin and an ion-conductive resistance control agent, and a ratio of the diameter of the intermediate transfer member obtained to the die diameter of the circular die is from 0.5 to 4.0. Also disclosed are an intermediate transfer member obtained by the production process, and an intermediate transfer member having the intermediate transfer member.

摘要翻译： 公开了一种制造在图像形成装置中使用的中间转印部件的方法，其中形成在第一图像承载部件上的图像被转印到第二图像承载部件。 该方法具有通过挤出机将挤压材料从圆形模头熔融挤出并随后将其制成所需形状以获得圆柱形挤出产品，并将所得的圆柱形挤压产品形成中间转印部件的步骤。 圆筒形挤出产品含有热塑性树脂和离子导电阻力控制剂，所获得的中间转印部件的直径与圆形模头的模头直径之比为0.5至4.0。 还公开了通过制造方法获得的中间转印部件和具有中间转印部件的中间转印部件。

公开(公告)号：US20060226572A1

公开(公告)日：2006-10-12

申请号：US11315283

申请日：2005-12-23

申请人： Atsushi Tanaka ,  Akihiko Nakazawa ,  Takashi Kusaba ,  Hidekazu Matsuda ,  Kenichi Yamauchi ,  Yuji Sakurai ,  Norifumi Muranaka

发明人： Atsushi Tanaka ,  Akihiko Nakazawa ,  Takashi Kusaba ,  Hidekazu Matsuda ,  Kenichi Yamauchi ,  Yuji Sakurai ,  Norifumi Muranaka

IPC分类号： B32B27/34 ,  B32B27/20

CPC分类号： C08L27/16 ,  C08K3/04 ,  C08L71/02 ,  C08L77/00 ,  C08L77/12 ,  G03G15/162 ,  G03G2215/0129 ,  Y10T428/31504 ,  Y10T428/3154 ,  Y10T428/31725 ,  C08L2666/14

摘要： An electrophotographic endless belt is disclosed having a layer formed of a resin composition containing (i) at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide; (ii) polyvinylidene fluoride; and (iii) carbon. In the resin composition, the ratio of the mass of the component (iii) to the mass of the component (i) is in a specific range.

摘要翻译： 公开了一种电子照相无接头环带，其具有由树脂组合物形成的层，所述树脂组合物含有（i）至少一种选自聚醚酯酰胺，聚烯烃醚和聚醚酰胺的树脂; （ii）聚偏二氟乙烯; 和（iii）碳。 在树脂组合物中，成分（iii）的质量与成分（i）的质量之比在特定范围内。

公开(公告)号：US20060127617A1

公开(公告)日：2006-06-15

申请号：US11345342

申请日：2006-02-02

申请人： Atsushi Tanaka ,  Takashi Kusaba ,  Hidekazu Matsuda ,  Yuji Sakurai ,  Akihiko Nakazawa

发明人： Atsushi Tanaka ,  Takashi Kusaba ,  Hidekazu Matsuda ,  Yuji Sakurai ,  Akihiko Nakazawa

IPC分类号： B32B27/08 ,  G03G15/00

CPC分类号： G03G15/0131 ,  G03G15/162 ,  G03G2215/0119 ,  G03G2215/0158 ,  Y10T428/1352 ,  Y10T428/24355

摘要： The electrophotographic belt of the present invention is characterized that, in the electrophotographic belt composed of the thermoplastic resin composition containing thermoplastic resin, with respect to a flake-shaped portion having an arc length of 5% of the inner peripheral length of the electrophotographic belt, when the thickness of the flake-shaped portion is measured at intervals of 1 mm in the peripheral direction, the difference between the maximum value and the minimum value of the measured value is 2% or more and 20% or less of an arithmetic average value.

摘要翻译： 本发明的电子照相带的特征在于，在由包含热塑性树脂的热塑性树脂组合物构成的电子照相带中，相对于具有电子照相带的内周长度的5％的圆弧长度的片状部分， 当在圆周方向上以1mm的间隔测量片状部分的厚度时，测量值的最大值和最小值之间的差为算术平均值的2％以上且20％以下 。