公开(公告)号：US5729802A

公开(公告)日：1998-03-17

申请号：US709739

申请日：1996-09-09

申请人： Jun Hirabayashi ,  Nobuyuki Ito ,  Harumi Ishiyama ,  Tadashi Furuya ,  Yasunori Chigono ,  Seiji Mashimo

发明人： Jun Hirabayashi ,  Nobuyuki Ito ,  Harumi Ishiyama ,  Tadashi Furuya ,  Yasunori Chigono ,  Seiji Mashimo

IPC分类号： G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022

摘要： An image forming apparatus includes an image bearing device, a charger contactable to the image bearing device for effecting contact charging of the image bearing device, the charger being supplied with a voltage having a DC component and an AC component, and the charger being provided with an electrode for receiving the voltage; wherein the following is satisfied: when an electric field formed between the image bearing device and the electrode is not more than .vertline.E/d.sub.SD .vertline. (V/m), a resistance of the charger per unit area of contact between the image bearing device and the charger is larger than 20E/(wCV.sub.DC) (.OMEGA.m.sup.2) and is larger than the resistance when the electric field is more than .vertline.(E+V.sub.DC)/d.sub.SD .vertline. (V/m) where E(V) is an amplitude of the AC component; w(rad) is an angular velocity of the AC component; d.sub.SD (m) is a minimum distance between the electrode and the image bearing device; C(F/m.sup.2) is an electrostatic capacity per unit area of the image bearing device; and V.sub.DC (V) is a voltage of the DC component.

摘要翻译： 图像形成装置包括图像承载装置，可与图像承载装置接触的充电器，用于实现图像承载装置的接触充电，充电器被提供有具有直流分量和交流分量的电压，充电器具有 用于接收电压的电极; 其中满足以下条件：当形成在图像承载装置和电极之间的电场不大于| E / dSD |时 （V / m），图像承载装置与充电器之间的每单位接触面积的充电器的电阻大于20E /（wCVDC）（OMEGA m2），并且大于电场大于| （E + VDC）/ dSD | （V / m）其中E（V）是AC分量的振幅; w（rad）是AC分量的角速度; dSD（m）是电极和图像承载装置之间的最小距离; C（F / m2）是图像承载装置每单位面积的静电容量; VDC（V）是DC分量的电压。

公开(公告)号：US5659852A

公开(公告)日：1997-08-19

申请号：US615823

申请日：1996-03-14

申请人： Yasunori Chigono ,  Harumi Ishiyama ,  Tadashi Furuya ,  Seiji Mashimo

发明人： Yasunori Chigono ,  Harumi Ishiyama ,  Tadashi Furuya ,  Seiji Mashimo

IPC分类号： G03G9/08 ,  G03G9/093 ,  G03G15/02

CPC分类号： B82Y15/00 ,  G03G15/0241 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/093 ,  G03G2215/022 ,  Y10S430/102

摘要： The image forming method comprises, electrostatically charging an image bearing member using a contact charging assembly, forming an electrostatic latent image on the image bearing member thus charged, developing the electrostatic latent image with a magnetic toner to form a toner image and transferring the toner image to a transfer medium, wherein the charging assembly comprises a magnetic brush formed from conductive magnetic particles magnetically bound, and the charging assembly comes into contact with the image bearing member to charge the surface of the image bearing member by directly injecting charges into the electron level present on the surface of the image bearing member and the magnetic toner has a value of .sigma..D..delta. of 150 or less, where the value is obtained by multiplying i) a magnetization quantity .sigma. (Am.sup.2 /kg) in a magnetic field of 1K oersted as measured by a vibration magnetometer, ii) a weight average particle diameter (D.sub.4) D (.mu.m) of the magnetic toner and iii) a density .delta. (g/cm.sup.3) thereof.

摘要翻译： 图像形成方法包括使用接触充电组件对图像承载部件静电充电，在如此充电的图像承载部件上形成静电潜像，用磁性调色剂显影静电潜像以形成调色剂图像并转印调色剂图像 转移介质，其中充电组件包括由磁性结合的导电磁性颗粒形成的磁刷，并且充电组件与图像承载部件接触，以通过将电荷直接注入电子等级来对图像承载部件的表面充电 存在于图像承载部件的表面上，并且磁性调色剂具有σ.D的值。 δ为150以下，其中通过i）通过振动磁力计测量的1K奥斯特的磁场中的磁化量σ（Am2 / kg）获得值，ii）重均粒径（D4）D（ μm）的磁性调色剂和iii）其密度δ（g / cm 3）。

公开(公告)号：US5570451A

公开(公告)日：1996-10-29

申请号：US324504

申请日：1994-10-18

申请人： Katsuhiro Sakaizawa ,  Yasushi Satoh ,  Yukihiro Ohzeki ,  Yasunori Chigono

发明人： Katsuhiro Sakaizawa ,  Yasushi Satoh ,  Yukihiro Ohzeki ,  Yasunori Chigono

IPC分类号： B41J2/01 ,  B41J3/54 ,  B41J13/00 ,  B41M5/28 ,  B41M5/30 ,  B41M5/382 ,  G03G15/00 ,  G03G15/22 ,  G03G15/36 ,  G03G21/00

CPC分类号： G03G15/221 ,  B41J3/546

摘要： An image forming apparatus for forming an image on a recording medium has an image forming system for forming an image on the recording medium, a second image forming system for forming an image on the recording medium based on an image forming method different from that for the first image forming system, a first recording medium transport passage for discharging the recording medium out of the apparatus after the recording medium has passed through the first and second image forming systems, a second recording medium transport passage for discharging the recording medium out of the apparatus without passing the recording medium through the second image forming system after the recording medium has passed through the first image forming system, and a third recording medium transport passage for discharging the recording medium out of the apparatus without passing the recording medium through the first image forming system after the recording medium has passed through the second image forming system.

摘要翻译： 用于在记录介质上形成图像的图像形成装置具有用于在记录介质上形成图像的图像形成系统，用于基于与记录介质不同的图像形成方法在记录介质上形成图像的第二图像形成系统 第一图像形成系统，用于在记录介质通过第一和第二图像形成系统之后将记录介质排出设备的第一记录介质传送通道，用于将记录介质从设备中排出的第二记录介质传送通道 在记录介质通过第一图像形成系统之后，不通过第二图像形成系统的记录介质，以及第三记录介质传送通道，用于将记录介质从设备中排出而不通过记录介质通过第一图像形成 在记录介质已经通过第二图像之后的系统 成型系统。