公开(公告)号：US5517289A

公开(公告)日：1996-05-14

申请号：US430100

申请日：1995-04-27

申请人： Katsuyuki Ito ,  Toru Ishihara ,  Toshiro Murano ,  Masato Sakai

发明人： Katsuyuki Ito ,  Toru Ishihara ,  Toshiro Murano ,  Masato Sakai

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G15/06 ,  G03G15/08 ,  G03G21/00 ,  G03G21/10

CPC分类号： G03G15/0806 ,  G03G15/0216 ,  G03G15/0225 ,  G03G21/0064 ,  G03G2221/0005

摘要： An image forming apparatus having a unit for charging the surface of an image carrier uniformly with electricity, the charging unit being contacted by a conductive element which changes a polarity of toner adhering to the unit, a unit for forming an electrostatic latent image on the surface of the image carrier charged electrically, a unit for developing the electrostatic latent image formed on the surface of the image carrier to thereby form a toner image and a means for transferring and fixing the toner image to a transfer member. The developing unit includes a developing roller which is disposed so as to contact the image carrier. The developing roller is connected to a power source for charging the toner particles on the developing roller with electricity with the same polarity as the charging polarity of the the image carrier, and for applying an electric potential to the developing roller so that the toner particles remaining on the developing roller are stuck to an image portion of the image carrier and the toner particles remaining on a non-image portion of the image carrier are attracted by the developing roller. The developing roller rotates in the direction opposite to that of the image carrier and a peripheral velocity of the developing roller exceeds 1.2 times that of the image carrier. Since the collected toner particles are not necessary to be disposed of, the environment is not polluted and the efficiency of using the toner is improved.

摘要翻译： 一种图像形成装置，具有用于均匀地用电充电图像载体的表面的单元，所述充电单元与导电元件接触，所述导电元件改变附着在所述单元上的调色剂的极性，用于在所述表面上形成静电潜像的单元 图像载体被电荷充电的单元，用于显影形成在图像载体的表面上的静电潜像从而形成调色剂图像的单元和用于将调色剂图像转印并固定到转印部件的装置。 显影单元包括以与图像载体接触的方式设置的显影辊。 显影辊连接到电源，用于以与图像载体的充电极性相同的极性的电力对显影辊充电调色剂颗粒，并且向显影辊施加电势，使得调色剂颗粒保持 在显影辊上粘贴图像载体的图像部分，并且残留在图像载体的非图像​​部分上的调色剂颗粒被显影辊吸引。 显影辊沿与图像载体相反的方向旋转，显影辊的圆周速度超过图像载体的1.2倍。 由于收集的调色剂颗粒不需要处理，所以环境不被污染，并且提高了使用调色剂的效率。

公开(公告)号：US5455664A

公开(公告)日：1995-10-03

申请号：US67121

申请日：1993-05-26

申请人： Katsuyuki Ito ,  Shinichi Katakura ,  Koichi Matsuzaki ,  Toru Ishihara

发明人： Katsuyuki Ito ,  Shinichi Katakura ,  Koichi Matsuzaki ,  Toru Ishihara

IPC分类号： G03G15/16 ,  G03G15/14 ,  G03G21/00

CPC分类号： G03G15/1675

摘要： In an electrophotographic printer, a power supply is connected to a transfer roller to which a current is supplied at a time that a print paper is inserted between a photosensitive drum 10 and the transfer roller. Since respective print papers have different resistances from one another, a voltage according to the kind of the print paper is generated at the transfer roller at a time that a preset current is supplied to the transfer roller, and is held. A sensor is arranged for detecting the width of the print paper, and detects the width of the print paper inserted between the photosensitive drum and the transfer roller. The value of the preset current supplied to the transfer roller 14 is changed so as to adapt to the width of the print paper.

摘要翻译： 在电子照相打印机中，电源连接到在将打印纸插入在感光鼓10和转印辊之间的时刻提供电流的转印辊。 由于各个打印纸具有彼此不同的电阻，所以在转印辊上产生根据打印纸的种类的电压，其中预设电流被提供给转印辊并被保持。 布置传感器用于检测打印纸的宽度，并且检测插入在感光鼓和转印辊之间的打印纸的宽度。 提供给转印辊14的预设电流的值被改变以适应打印纸的宽度。

公开(公告)号：US5361088A

公开(公告)日：1994-11-01

申请号：US28747

申请日：1993-03-09

申请人： Katsuyuki Ito ,  Shinichi Katakura ,  Takehiko Okubo

发明人： Katsuyuki Ito ,  Shinichi Katakura ,  Takehiko Okubo

IPC分类号： B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  B41J29/00 ,  B41J29/38 ,  G03G15/00 ,  G03G15/02 ,  G03G15/04 ,  G03G15/16 ,  G03G15/20 ,  G03G15/22 ,  H04N1/29 ,  G01D15/06 ,  G01D15/14

CPC分类号： G03G15/221 ,  G03G15/043

摘要： An electrophotographic printer capable of changing its printing speed includes a change signal generating circuit for generating a speed change signal, a head scan cycle setting circuit for setting a cycle time of a scan line of an LED array head, and a motor speed setting circuit for setting a rotation speed of a photosensitive drum. Since the head scan cycle setting circuit and the motor speed setting circuit are activated in response to the speed change signal outputted from the change signal generating circuit, the operations of the photosensitive drum and the LED array head are synchronized with each other, so that the printer can print a fine image on a recording medium. The printer control unit including those circuits also includes control circuits for controlling a constant current supplied to a transfer roller, and for controlling a temperature of fixing rollers, to avoid unevenness of printing.

摘要翻译： 能够改变其打印速度的电子照相打印机包括用于产生变速信号的变化信号产生电路，用于设置LED阵列头的扫描线的周期时间的头扫描周期设置电路和用于 设定感光鼓的旋转速度。 由于头扫描周期设置电路和电动机速度设置电路响应于从改变信号发生电路输出的速度变化信号被激活，所以感光鼓和LED阵列头的操作彼此同步， 打印机可以在记录介质上打印精细图像。 包括那些电路的打印机控制单元还包括用于控制提供给转印辊的恒定电流并且用于控制定影辊的温度的控制电路，以避免印刷不均匀。

公开(公告)号：US5239345A

公开(公告)日：1993-08-24

申请号：US902796

申请日：1992-06-24

申请人： Hiroshi Kikuchi ,  Yoshiharu Momiyama ,  Yoshitomo Koga ,  Masato Sakai ,  Katsuyuki Ito ,  Shinichi Katakura

发明人： Hiroshi Kikuchi ,  Yoshiharu Momiyama ,  Yoshitomo Koga ,  Masato Sakai ,  Katsuyuki Ito ,  Shinichi Katakura

IPC分类号： G03G15/08

CPC分类号： G03G15/081

摘要： An image forming device for printing images on sheets of material includes a photosensitive member for carrying a latent image thereon, a developing roller rotatably disposed adjacent to the photosensitive member for supplying a layer of toner to the photosensitive member through rotation, and a developing blade adjustably disposed adjacent to the developing roller for regulating the thickness of the toner layer supplied to the photosensitive member. A driving circuit controllably rotates the developing roller, and a controller controls the driving circuit. The controller generates signals to control the driving circuit to reverse the rotation of the developing roller under certain conditions.

摘要翻译： 用于在材料片上打印图像的图像形成装置包括用于在其上承载潜像的感光部件，可旋转地设置在感光部件附近的显影辊，用于通过旋转向感光部件供给调色剂层，并且可调节地显影 设置在显影辊附近，用于调节供应到感光构件的调色剂层的厚度。 驱动电路可控地旋转显影辊，并且控制器控制驱动电路。 控制器产生信号以控制驱动电路以在某些条件下反转显影辊的旋转。