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公开(公告)号：US5212034A
公开(公告)日：1993-05-18
申请号：US711143
申请日：1991-06-06
Applicant: Koichi Tsuyama , Hiroshi Harada
Inventor： Koichi Tsuyama , Hiroshi Harada
CPC classification number: G03G9/1133 , Y10S430/105
Abstract: Magnetic carrier for use in electrophotographic development takes the form of ferrite core particles each having a resinous coating. Ferrite core particles having a limited particle size distribution are coated with a resinous composition based on a copolymer consisting essentially of ethyl methacrylate, 15 to 25% by weight of styrene, up to 2% by weight of dodecyl methacrylate, and up to 2% by weight of 2-hydroxyethyl acrylate. The magnetic carrier particles have a resistance of 8.5.times.10.sup.7 to 2.2.times.10.sup.9 .OMEGA.. This carrier has a sharp distribution of electric charge and a quick rise of charging performance. The coating is tough enough to impart durability to the carrier.
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公开(公告)号：US5240804A
公开(公告)日：1993-08-31
申请号：US736436
申请日：1991-07-26
Applicant: Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Teruaki Teratani , Koichi Tsuyama , Seijiro Ishimaru , Yoshitake Shimizu
Inventor： Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Teruaki Teratani , Koichi Tsuyama , Seijiro Ishimaru , Yoshitake Shimizu
CPC classification number: G03G9/09 , G03G9/0819 , G03G9/08711 , G03G9/091 , G03G9/1133
Abstract: The present invention provides an electrophotographic developer comprising (i) a toner containing a fixing resin in which the content of an acrylic component is limited to a predetermined range, or a toner of which surface dye density is limited to a predetermined range, and (ii) a carrier coated with a coating resin containing, as an acrylic component, dodecyl methacrylate or 2-hydroxyethyl acrylate.In the electrophotographic developer of the present invention, the electric charging characteristics are always stable.
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3.发明授权Toner for developing statically charged images and process for preparation thereof 失效用于开发静态充电图像的调色剂及其制备方法
公开(公告)号：US5110704A
公开(公告)日：1992-05-05
申请号：US544632
申请日：1990-06-27
Applicant: Masahide Inoue , Tetsuya Nakano , Naruo Yabe , Koichi Tsuyama , Yoshitake Shimizu , Mitsushi Kuroki
Inventor： Masahide Inoue , Tetsuya Nakano , Naruo Yabe , Koichi Tsuyama , Yoshitake Shimizu , Mitsushi Kuroki
CPC classification number: G03G9/0821 , G03G9/08711
Abstract: Disclosed is a toner for developing a statically charged image, which comprises a fixing resin and, dispersed therein, a colorant and a charge-controlling dye. This toner is characterized in that the tangent (tan .delta.) of the loss angle is in the range of from 0.95 to 1.25 when the storage modulus of elasticity (G') is 10.sup.4 dyne/cm.sup.2. The toner having such rheological characteristics has an excellent fixing property, a high offset resistance, a capacity of forming an image having a high quality and a good durability.
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公开(公告)号：US5119758A
公开(公告)日：1992-06-09
申请号：US412124
申请日：1989-09-25
Applicant: Masahide Inoue , Koichi Tsuyama , Yoshitake Shimizu
Inventor： Masahide Inoue , Koichi Tsuyama , Yoshitake Shimizu
CPC classification number: G03G9/107 , G03G13/09 , G03G15/0853
Abstract: Disclosed is a process for developing an electrostatic latent image, which comprises forming a magnetic brush of a two-component type developer comprising a toner and a magnetic carrier on a developing sleeve and bringing the magnetic brush into sliding contact with a photosensitive drum, wherein a spike-cutting plate is arranged along the developing sleeve to adjust the spike length of the magnetic brush, a detecting mechanism is arranged in a development apparatus to detect the concentration of the toner by measuring the permeability of the developer, the magnetic carrier used has a saturation magnetization not higher than 50 emu/g but not lower than 40 emu/g, and the ratio (do/dl) of the distance (do) between the spike-cutting plate and the developing sleeve to the distance (dl) between the photosensitive drum and the developing sleeve is set in the range of from 0.80 to 0.85, whereby the toner concentration is detected by the detecting mechanism and the development is carried out at a predetermined toner concentration.
Abstract translation: 公开了一种用于显影静电潜像的方法，其包括在显影套筒上形成包括调色剂和磁性载体的双组分型显影剂的磁刷，并使磁刷与感光鼓滑动接触，其中 尖头切割板沿着显影套筒布置以调节磁刷的尖峰长度，检测机构布置在显影装置中，以通过测量显影剂的透气度来检测调色剂的浓度，所用的磁性载体具有 饱和磁化强度不高于50emu / g但不低于40emu / g，并且尖锐切割板和显影套筒之间的距离（do）的比（do / dl）与 感光鼓和显影套筒设定在0.80至0.85的范围内，由此通过检测机构检测调色剂浓度，并进行显影 t预定的调色剂浓度。
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公开(公告)号：US5104766A
公开(公告)日：1992-04-14
申请号：US544637
申请日：1990-06-27
Applicant: Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Koichi Tsuyama , Yoshitake Shimizu , Mitsushi Kuroki
Inventor： Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Koichi Tsuyama , Yoshitake Shimizu , Mitsushi Kuroki
CPC classification number: G03G9/0819
Abstract: Disclosed are a toner for developing a statically charged image and a process for the preparation thereof. If a toner for developing a statically charged image, comprising a binder resin and, dispersed therein, a colorant and a charge-controlling dye, is prepared so that it has a particle size distribution satisfying the requirement represented by the following formula:N
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Patent Agency Ranking
公开(公告)号：US5376489A
公开(公告)日：1994-12-27
申请号：US946154
申请日：1992-09-17
Applicant: Naruo Yabe , Tetsuya Nakano , Masahide Inoue , Teruaki Teratani , Koichi Tsuyama , Yoshitake Shimizu , Seijiro Ishimaru
Inventor： Naruo Yabe , Tetsuya Nakano , Masahide Inoue , Teruaki Teratani , Koichi Tsuyama , Yoshitake Shimizu , Seijiro Ishimaru
CPC classification number: G03G9/1132 , G03G9/0823
Abstract: The developer in accordance with the present invention includes toner, and a carrier having a core material the surface of which is coated with a coating layer made of a polymer, the coating layer having a resistance value sufficient to minimize the counter electric charge remaining in the coating layer, and the toner having any of characteristic values required for preventing a counter electric charge remaining in the coating layer from being increased. The use of the developer of the present invention not only prevents the occurrence of so-called carrier scattering, to thereby prevent blanking, but also produces an image of high quality having a high initial image density.
Abstract translation: 根据本发明的显影剂包括调色剂和具有芯材料的载体，其表面涂覆有由聚合物制成的涂层，所述涂层具有足以使剩余的反电荷最小化的电阻值 涂层，并且具有防止在涂层中剩余的相对电荷所需的任何特征值的调色剂增加。 使用本发明的显影剂不仅防止所谓的载体散射的发生，从而防止消隐，而且还产生具有高初始图像浓度的高质量的图像。
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公开(公告)号：US5275904A
公开(公告)日：1994-01-04
申请号：US8338
申请日：1993-01-25
Applicant: Yoshitake Shimizu , Koichi Tsuyama , Masahide Inoue , Tetsuya Nakano
Inventor： Yoshitake Shimizu , Koichi Tsuyama , Masahide Inoue , Tetsuya Nakano
CPC classification number: G03G15/0853 , G03G15/0849
Abstract: The present invention provides a start developer wherein an output voltage of a sensor in the start developer having a particular toner density is not less than 0.9 times an output voltage of the sensor in a developer having the same toner density in a time period during which image characteristics are stabilized after repeating image formation by an image forming apparatus and is less than a threshold value at which the supply of toner is started and a method of controlling the toner density using the start developer. According to the present invention, good images can be always formed irrespective of the variation in characteristics between sensors in image forming apparatuses and from the early stage of image formation to the stable time period.
Abstract translation: 本发明提供了一种起动显影剂，其中具有特定调色剂密度的起始显影剂中的传感器的输出电压不小于在图像的时间段内具有相同调色剂密度的显影剂中的传感器的输出电压的0.9倍 在通过图像形成装置重复图像形成之后，特性被稳定，并且小于开始调色剂供应的阈值和使用起始显影剂控制调色剂浓度的方法。 根据本发明，可以始终形成良好的图像，而不管图像形成装置中的传感器之间的特性以及从图像形成的早期阶段到稳定的时间段的变化。
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公开(公告)号：US5223367A
公开(公告)日：1993-06-29
申请号：US735273
申请日：1991-07-24
Applicant: Seijiro Ishimaru , Tetsuya Nakano , Masahide Inoue , Koichi Tsuyama , Teruaki Teratani , Naruo Yabe , Yoshitake Shimizu
Inventor： Seijiro Ishimaru , Tetsuya Nakano , Masahide Inoue , Koichi Tsuyama , Teruaki Teratani , Naruo Yabe , Yoshitake Shimizu
IPC: G03G9/08
CPC classification number: G03G9/08
Abstract: A start developer is described which includes a toner and a carrier, present in a predetermined ratio. The carrier spent amount is adjusted so that it is not less than 0.010% in terms of the amount of carbon, as measured with a carbon analyzer. With this start developer, good quality images may be formed throughout the copying operation, from the initial image forming stage to the repeated image forming stage and through the stabilized image forming stage.
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公开(公告)号：US5690837A
公开(公告)日：1997-11-25
申请号：US576488
申请日：1995-12-21
Applicant: Akishi Nakaso , Koichi Tsuyama , Kazuhisa Otsuka , Haruo Ogino , Yoshihiro Tamura , Teiichi Inada , Kazunori Yamamoto , Akinari Kida , Atsushi Takahashi , Yoshiyuki Tsuru , Shigeharu Arike
Inventor： Akishi Nakaso , Koichi Tsuyama , Kazuhisa Otsuka , Haruo Ogino , Yoshihiro Tamura , Teiichi Inada , Kazunori Yamamoto , Akinari Kida , Atsushi Takahashi , Yoshiyuki Tsuru , Shigeharu Arike
CPC classification number: H05K3/4652 , H05K3/0055 , H05K2201/0209 , H05K2203/063 , H05K2203/0773 , H05K2203/0789 , H05K2203/0793 , H05K2203/0796 , H05K3/025 , H05K3/381
Abstract: In a process for producing a multilayer printed circuit board comprising drilling holes for via holes in a composite film material containing at least a copper foil and an insulating half-cured adhesive layer, laminating the resulting film material on an innerlayer circuit substrate, ad electrically connecting an innerlayer circuit with an outer layer copper foil, when an adhesive resin flowed into the holes is roughened, or when a composite film material having a copper foil of less than 12 .mu.m thick formed on a carrier is used, or a special cushion material is further laminated on the laminate of the innerlayer circuit substrate and the film material, electrical connection reliability is enhanced and circuit density can be increased with easy steps.
Abstract translation: 在制造多层印刷电路板的方法中，该多层印刷电路板包括至少包含铜箔和绝缘半固化粘合剂层的复合膜材料中的通孔钻孔，将所得薄膜材料层叠在内层电路基板上，电连接 具有外层铜箔的内层电路当流入孔中的粘合剂树脂被粗糙化时，或者当使用形成在载体上的具有小于12μm厚的铜箔的复合膜材料或特殊的缓冲材料 进一步层压在内层电路基板和膜材料的层压体上，提高了电连接的可靠性，并且通过简单的步骤可以提高电路密度。
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公开(公告)号：US5264311A
公开(公告)日：1993-11-23
申请号：US570304
申请日：1990-08-20
Applicant: Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Koichi Tsuyama , Yoshitake Shimizu , Mitsushi Kuroki
Inventor： Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Koichi Tsuyama , Yoshitake Shimizu , Mitsushi Kuroki
CPC classification number: G03G9/08711 , G03G9/08728 , Y10S430/105
Abstract: In an electrophotographic toner, by using as the binder resin a styrene/acrylic resin in which in the gel permeation chromatogram, a high molecular weight peak value appears in a molecular weight region higher than 1.times.10.sup.5, a low molecular weight peak value appears in a molecular weight region of from 2.times.10.sup.4 to 500, a minimum value appears halfways between the two peaks and the ratio (V/P) of the area of the valley to the peak area is lower than 0.3, the internal cohesive force of the binder resin for the toner can be prominently improved while maintaining the low-temperature fixing property and offset resistance at high levels, and pulverization of the toner and formation of the spent toner can be prevented during the developing operation and the durability of the toner can be improved.
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