公开(公告)号：USD294023S

公开(公告)日：1988-02-02

申请号：US905322

申请日：1986-09-09

申请人： Akira Sekiguchi ,  Hideaki Kodama

设计人： Akira Sekiguchi ,  Hideaki Kodama

公开(公告)号：US5966560A

公开(公告)日：1999-10-12

申请号：US704210

申请日：1996-08-29

申请人： Hideaki Kodama ,  Yasuhiro Ohno ,  Kazuomi Sakatani ,  Makoto Takase

发明人： Hideaki Kodama ,  Yasuhiro Ohno ,  Kazuomi Sakatani ,  Makoto Takase

IPC分类号： G03G15/16 ,  G03G15/14

CPC分类号： G03G15/169 ,  G03G15/167

摘要： In an electrophotographic copying machine, image quality is improved by suppressing phenomena such as narrowing and thickening of a linear image or discharge noises in a photograph image due to anomalies on transfer of a toner image. For example, a document type is discriminated and when a transfer brush is used for transfer, transfer current and pretransfer erasing are controlled according to the type of document image. The pretransfer erasing is controlled in various following situations: Bi-level exposure method or multi-level exposure method, edge emphasis, photoelectric efficiency, the surface potential of the photoconductor, and position of a developing device.

摘要翻译： 在电子照相复印机中，通过抑制由于调色剂图像的转印异常引起的线形图像的变窄和增厚或照片图像中的放电噪声等现象而提高了图像质量。 例如，识别文档类型，并且当使用传送刷子进行传送时，根据文档图像的类型来控制传送电流和预传送擦除。 在以下各种情况下控制预转印擦除：双层曝光方法或多层曝光方法，边缘强调，光电效率，感光体的表面电位和显影装置的位置。

公开(公告)号：US5943526A

公开(公告)日：1999-08-24

申请号：US69139

申请日：1998-04-29

申请人： Hideaki Kodama

发明人： Hideaki Kodama

IPC分类号： G03G15/16 ,  G03G15/00

CPC分类号： G03G15/167 ,  G03G2215/0119 ,  G03G2215/1619 ,  G03G2215/1623

摘要： An image forming apparatus gets information on the thickness of the photosensitive layer by using the image transfer power source and transfer brush, and controls the contact position of the transfer brush on the paper carrying belt based on the thickness information, so that in case the photosensitive layer wears thin partially due to the long-term use, the apparatus increases in compensation the impedance of the carrying belt in its section from the image transfer zone to the contact position of the transfer brush. The apparatus may be designed to use selectively multiple transfer brushes having different impedances, instead of the position control of one transfer brush. Consequently, the apparatus can retain the difference of impedance between the toner image portion and non-toner image portion in the transfer zone of the photosensitive layer and thus can retain the unevenness of transfer electric field distribution across the transfer zone in the same degree as with a new photosensitive layer, whereby it performs high-quality image formation without the occurrence of dropout throughout the long-term use. For a multi-color image forming apparatus, the image forming unit for black color that is most sensitive to the print quality implements the impedance control.

摘要翻译： 图像形成装置通过使用图像转印电源和转印刷获得关于感光层厚度的信息，并且基于厚度信息来控制转印刷在承载带上的接触位置，使得在感光 由于长期使用，薄层部分地磨损较薄，因此该装置将其部分中的传送带的阻抗从图像转印区域增加到传送刷的接触位置。 该设备可以被设计成选择性地使用具有不同阻抗的多个传送刷，而不是一个传送刷的位置控制。 因此，该装置可以保持感光层的转印区域中的调色剂图像部分和非调色剂图像部分之间的阻抗差，因此可以以与转印区域相同的程度保持转印区域的转印电场分布的不均匀度 一种新的感光层，从而在整个长期使用中不会发生脱落，从而进行高质量的图像形成。 对于多色图像形成装置，对打印质量最敏感的黑色图像形成单元实现阻抗控制。

公开(公告)号：US5619308A

公开(公告)日：1997-04-08

申请号：US63082

申请日：1993-05-18

申请人： Naoyoshi Kinoshita ,  Takeru Kinoshita ,  Hideaki Kodama

发明人： Naoyoshi Kinoshita ,  Takeru Kinoshita ,  Hideaki Kodama

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G15/5037 ,  G03G15/50 ,  G03G2215/00042 ,  G03G2215/00054 ,  G03G2215/00063 ,  G03G2215/00084

摘要： In an electrophotographic image forming apparatus including a photoconductive drum, the photoconductive drum is electrically charged by a corona charger, and light corresponding to an image is projected onto the photoconductive drum by an exposure optical system, thereby forming an electrostatic latent image thereon. Thereafter, the formed electrostatic latent image is developed with toner by a developing unit to form a toner image thereon, and then the toner image is transferred onto a sheet of paper. There is further provided a voltage sensor for detecting a surface voltage at at least one position of the photoconductive drum. An operation value of at least one of the corona charger, the exposure optical system and the developing unit is adjusted by an adjustment controller based on the surface voltage detected by the voltage sensor at a timing between respective image forming processes when an image forming process is continuously repeated a plurality of times. Further, the operation value of at least one of the corona charger, the exposure optical system and the developing unit is further adjusted with a preciseness higher than that of the adjusting controller, based on the surface voltage detected by the voltage sensor, prior to a process of continuously repeating an image forming process a plurality of times.

摘要翻译： 在包括感光鼓的电子照相图像形成装置中，感光鼓由电晕充电器充电，并且对应于图像的光通过曝光光学系统投射到感光鼓上，从而在其上形成静电潜像。 此后，通过显影单元将所形成的静电潜像用调色剂显影以在其上形成调色剂图像，然后将调色剂图像转印到一张纸上。 还提供了用于检测感光鼓的至少一个位置处的表面电压的电压传感器。 电晕充电器，曝光光学系统和显影单元中的至少一个的操作值在图像形成处理为图像形成处理之前的各图像形成处理之间的定时基于由电压传感器检测到的表面电压由调整控制器进行调整 不断重复多次。 此外，电晕充电器，曝光光学系统和显影单元中的至少一个的操作值进一步基于在电压传感器检测到的表面电压之前，以比调节控制器的精度更高的精度进行调整 多次连续重复图像形成处理的处理。

公开(公告)号：US5241347A

公开(公告)日：1993-08-31

申请号：US799295

申请日：1991-11-27

申请人： Hideaki Kodama

发明人： Hideaki Kodama

IPC分类号： G03G15/02 ,  B41J2/44 ,  G03G15/00 ,  G03G15/01 ,  G03G15/04 ,  G03G15/043 ,  G03G15/06 ,  H04N1/29 ,  H04N1/407

CPC分类号： G03G15/5062 ,  G03G15/5041 ,  G03G2215/00042

摘要： In an image forming apparatus for forming an image on a sheet of paper, including an image forming device for forming a reference toner image having a predetermined density on an image retaining member. A first detector detects a density of the reference toner image formed on the image retaining member and outputs first density data for representing the detected density thereof, and then, the reference toner image formed on the image retaining member is transferred onto a sheet of paper. On the other hand, a second detector detects a density of the reference toner image transferred on the sheet of paper and outputs second density data for representing the detected density thereof. Further, a controller automatically adjusts an image density of an image formed on a sheet of paper so as to obtain a predetermined image density by controlling operation conditions of the image forming device based on the first and second density data respectively outputted from the first and second detectors.

摘要翻译： 在用于在一张纸上形成图像的图像形成装置中，包括用于在图像保持部件上形成具有预定密度的基准调色剂图像的图像形成装置。 第一检测器检测形成在图像保持部件上的基准调色剂图像的浓度，并输出用于表示其检测浓度的第一浓度数据，然后将形成在图像保持部件上的基准调色剂图像转印到一张纸上。 另一方面，第二检测器检测在纸张上转印的参考调色剂图像的浓度，并输出用于表示其检测浓度的第二浓度数据。 此外，控制器通过基于分别从第一和第二输出的第一和第二密度数据控制图像形成装置的操作条件来自动调整形成在纸张上的图像的图像浓度，以便获得预定的图像浓度 探测器

公开(公告)号：US06223004B1

公开(公告)日：2001-04-24

申请号：US09310834

申请日：1999-05-12

申请人： Hideaki Kodama

发明人： Hideaki Kodama

IPC分类号： G03G1500

CPC分类号： G03G15/065 ,  G03G15/1675 ,  G03G15/169 ,  G03G2215/00776

摘要： An image forming apparatus using an electrophotographic process is disclosed which measures the resistance of a page onto which an image is to be formed and optionally also measures the humidity of ambient environment. A controller controls image forming conditions, such as a development condition or a transfer condition, according to the measured resistance and/or the measured humidity.

摘要翻译： 公开了一种使用电子照相方法的图像形成装置，其测量要形成图像的页面的电阻，并且还可以测量周围环境的湿度。 控制器根据测量的电阻和/或测量的湿度来控制诸如显影条件或转印条件的成像条件。

公开(公告)号：US5325122A

公开(公告)日：1994-06-28

申请号：US14244

申请日：1993-02-05

申请人： Yoshihiro Hattori ,  Suguru Hamamichi ,  Hideaki Kodama

发明人： Yoshihiro Hattori ,  Suguru Hamamichi ,  Hideaki Kodama

IPC分类号： B41J2/44 ,  G03G15/00 ,  G03G15/04 ,  H04N1/23 ,  H04N1/407 ,  G01D15/14

CPC分类号： G03G15/5037 ,  G03G15/5041 ,  H04N1/4076 ,  G03G2215/00042

摘要： A digital half-tone image is reproduced by exposing a photoconductor by modulating the intensity of laser beam. In order to correct the effect of the size of laser beam on the gradation characteristic, the surface potential of the photoconductor is detected under various conditions. The sensitizing potential and the sensitivity of the photoconductor are corrected according to the measured values for stabilizing the gradation potential. Then, the beam size is corrected according to the surface potential or the amount of adhered toners detected under prescribed conditions, without detecting the beam size.

摘要翻译： 通过调制激光束的强度来曝光光电导体来再现数字半色调图像。 为了校正激光束的尺寸对灰度特性的影响，在各种条件下检测感光体的表面电位。 根据用于稳定灰度级的电位的测量值校正感光体的感光度和感光度。 然后，根据在规定条件下检测到的粘附的调色剂的表面电位或量，而不检测光束尺寸来校正光束尺寸。

公开(公告)号：USD293906S

公开(公告)日：1988-01-26

申请号：US905323

申请日：1986-09-09

申请人： Akira Sekiguchi ,  Hideaki Kodama

设计人： Akira Sekiguchi ,  Hideaki Kodama

公开(公告)号：USD287490S

公开(公告)日：1986-12-30

申请号：US679122

申请日：1984-12-06

申请人： Akira Sekiguchi ,  Hideaki Kodama

设计人： Akira Sekiguchi ,  Hideaki Kodama

公开(公告)号：USD287489S

公开(公告)日：1986-12-30

申请号：US678874

申请日：1984-12-06

申请人： Akira Sekiguchi ,  Hideaki Kodama

设计人： Akira Sekiguchi ,  Hideaki Kodama