公开(公告)号：US5480750A

公开(公告)日：1996-01-02

申请号：US209876

申请日：1994-03-14

申请人： Masaya Kawada ,  Koji Yamazaki ,  Shigenori Ueda ,  Toshiyuki Ehara ,  Hiroaki Niino

发明人： Masaya Kawada ,  Koji Yamazaki ,  Shigenori Ueda ,  Toshiyuki Ehara ,  Hiroaki Niino

IPC分类号： G03G5/08 ,  G03G5/082 ,  G03G13/22 ,  G03G15/00 ,  G03G15/02 ,  G03G21/00 ,  G03G13/045

CPC分类号： G03G5/08235 ,  G03G13/22 ,  G03G21/00 ,  G03G5/08221

摘要： There are provided an electrophotographic apparatus and an electrophotographic process featured by control satisfying a condition 1n(n).times.1n(S)/1n(E).ltoreq.19.0 among the localized energy level density n in the photoconductive layer of an amorphous silicon photosensitive member employed in the electrophotographic apparatus, the electric field E applied to the photosensitive member, and the surfacial moving speed S thereof. Such control reduces the photocarriers remaining in the photoconductive layer and inducing the photomemory effect, thereby suppressing the influence of a remaining latent image on the latent image generated in a next step, and providing an image of high quality without the photomemory effect, within resulting in a loss in the charging efficiency.

摘要翻译： 提供一种电子照相设备和电子照相方法，其特征在于满足条件1n（n）x1n（S）/ 1n（E） 19.0在非晶硅感光构件的光电导层中的局部能级密度n 在电子照相设备中使用的电场E和施加到感光构件的电场E及其表面移动速度S. 这样的控制减少光电导层中残留的光载流子并引起光记忆效应，从而抑制剩余潜像对下一步产生的潜像的影响，并提供高质量的图像而不产生光存储效应，导致 充电效率的损失。

公开(公告)号：US4407918A

公开(公告)日：1983-10-04

申请号：US348839

申请日：1982-02-16

申请人： Eiichi Sato

发明人： Eiichi Sato

IPC分类号： G03G15/05 ,  G03G5/02 ,  G03G5/043 ,  G03G5/047 ,  G03G5/14 ,  G03G13/00 ,  G03G13/045 ,  G03G15/00 ,  G03G13/22

CPC分类号： G03G5/144 ,  G03G13/00 ,  G03G13/045 ,  G03G5/0436 ,  G03G5/047 ,  G03G5/142 ,  Y10S430/102

摘要： A photosensitive member is formed by applying on an electrically conductive substrate, a first photoconductive layer sensitive to a visible light, an insulating charge retentive layer, and a second photoconductive layer sensitive to ultraviolet light, successively in this order. At first the photosensitive member is uniformly charged to a negative polarity, while the photosensitive member is uniformly exposed to the visible light. Then an image of a document to be copied is projected while the photosensitive member is charged to a positive polarity. After that the photosensitive layer is uniformly exposed to the visible light and finally the photosensitive member is uniformly exposed to the ultraviolet light. In this manner, an electrostatic charge image having high contrast and resolution is formed in the photosensitive member by means of charges which are stably trapped across the charge retentive layer. By repeating development and transfer for the same and single charge image once formed in the photosensitive member a number of copies having excellent image quality can be printed.

摘要翻译： 通过依次施加导电性基板，对可见光敏感的第一光电导层，绝缘电荷保持层和对紫外线敏感的第二光电导层，形成感光体。 首先，感光构件被均匀地充电到负极性，同时感光构件被均匀地暴露于可见光。 然后在将感光构件充电到正极性的同时投影要复制的文档的图像。 之后，感光层均匀地暴露于可见光，最后感光部件均匀地暴露于紫外光。 以这种方式，通过稳定地捕获在电荷保持层上的电荷，在感光构件中形成具有高对比度和分辨率的静电荷图像。 通过重复显影和转印一次形成在感光构件上的相同和单一的电荷图像，可以印刷出具有优异图像质量的多个拷贝。

公开(公告)号：US6013403A

公开(公告)日：2000-01-11

申请号：US137114

申请日：1998-08-20

申请人： Junichi Ichikawa

发明人： Junichi Ichikawa

IPC分类号： G03G9/08 ,  G03G13/08 ,  G03G15/00 ,  G03G15/01 ,  G03G15/08 ,  H04N1/29 ,  H04N1/387 ,  H04N1/40 ,  G03G13/045

CPC分类号： H04N1/40025 ,  G03G13/08 ,  H04N1/29 ,  G03G2215/0119

摘要： When the uniformly charged surface of a photoreceptor is exposed to an intensive light (a), a potential at an exposed position (Vx) is lower than a bias voltage (Vbias-A) of a first developing unit (b), toner A attaches to the exposed position (Vx) after its developing process, and its potential is lower than a bias voltage (Vbias-B) of a second developing unit (c). When the uniformly charged surface of a photoreceptor is exposed to a weak light, a potential at the exposed position (Vx) is lower than the bias voltage (Vbias-B) but higher than the bias voltage (Vbias-A) (e). Only toner B attaches to the photoreceptor (f). If the toner A and toner B belong to the same color family and are black toner and gray toner, an image of two density levels is formed, and the gradation and the graininess of the resultant picture are improved.

摘要翻译： 当感光体的均匀充电的表面暴露于强光（a）时，暴露位置（Vx）的电位低于第一显影单元（b）的偏压（Vbias-A），调色剂A附着 在显影处理之后到曝光位置（Vx），并且其电位低于第二显影单元（c）的偏置电压（Vbias-B）。 当感光体的均匀带电表面暴露于弱光时，曝光位置（Vx）的电位低于偏置电压（Vbias-B），但高于偏置电压（Vbias-A）（e）。 只有调色剂B附着于感光体（f）。 如果调色剂A和调色剂B属于相同颜色系列，并且是黑色调色剂和灰色调色剂，则形成两个浓度级别的图像，并且所得图像的灰度和颗粒度得到改善。

公开(公告)号：US5497179A

公开(公告)日：1996-03-05

申请号：US969231

申请日：1993-03-08

申请人： Takashi Aono ,  Kayoko Sugiyama ,  Masayuki Iijima

发明人： Takashi Aono ,  Kayoko Sugiyama ,  Masayuki Iijima

IPC分类号： G03G15/05 ,  G03G5/02 ,  G03G13/045 ,  H04N1/29 ,  G01D15/06

CPC分类号： G03G13/045 ,  G03G5/02

摘要： A charge carrier medium 1 including an insulating layer 11 laminated on an electrically conductive layer 12 with an electrostatic latent image 2 recorded on the insulating layer 11 is brought into contact with water, etc., to resurrect the attenuated potential. Alternatively, the charge carrier medium 1 is previously immersed in water, etc., to deposit onto the surface thereof charges opposite in polarity to those of the electrostatic latent image 2 generated by charging, thereby attenuating the surface potential. This makes any external access to the image information impossible. In reading the image information, a PET film 5 or the like is brought into close contact with the surface of the charge carrier medium 1, and is then peeled apart from that surface to remove the charges of the opposite polarity and thereby resurrect the image information for reading. This makes it possible to protect the image information against a third person's access thereto and provide an assured reproduction of the electrostatic latent image.

摘要翻译： PCT No.PCT / JP92 / 00615 Sec。 371日期1993年3月8日 102（e）1993年3月8日PCT PCT。日期为1992年5月14日。包含层叠在导电层12上的绝缘层11与记录在绝缘层11上的静电潜像2的电荷载体介质1接触 用水等来复活衰减的潜力。 或者，电荷载体介质1预先浸入水等中，以使其表面上的电荷与通过充电产生的静电潜像2的极性相反，从而使表面电位衰减。 这使得对图像信息的任何外部访问都不可能。 在读取图像信息时，将PET膜5等与电荷载体介质1的表面紧密接触，然后从该表面剥离以除去相反极性的电荷，从而使图像信息复原 阅读。 这使得可以保护图像信息免受第三人对其的访问，并提供静电潜像的可靠再现。

公开(公告)号：US4828953A

公开(公告)日：1989-05-09

申请号：US58266

申请日：1987-05-21

申请人： Tateki Oka ,  Naoki Toyoshi ,  Tomoaki Yokoyama

发明人： Tateki Oka ,  Naoki Toyoshi ,  Tomoaki Yokoyama

IPC分类号： G03G13/045 ,  G03G13/22

CPC分类号： G03G13/22 ,  G03G13/045

摘要： The present invention relates to a method for forming an outline of an image. By this method, at first, an electrostatic latent image bearing member is charged and then irradiated to a negative image to form an electrostatic latent image. Thereafter, the irradiated member is re-charged with a scorotron charger while applying a voltage to a grid, said voltage being lower than the surface potential of the non-image portion of the latent image, being higher than the potential of the image portion of the latent image and being of the same porality as that of the charging. By this re-charging, in one embodiment, the outline portion of the image has lower potential than the other portion. Then, the outline portion of the image with lower potential is visualized with a reversal development by using a toner charged to a polarity same as the polarity of charging.Or in another embodiment, the outline portion of the image has higher potential than the other portion. Then, the outline portion of the image with high potential is visualized with a normal development by using a toner charged to a polarity opposite to the polarity of charging.

摘要翻译： 本发明涉及一种形成图像轮廓的方法。 通过该方法，首先，对静电潜像承载部件进行充电，然后照射到负像以形成静电潜像。 之后，将照射部件用栅极充电器重新充电，同时施加电压到电网，所述电压低于潜像的非图像部分的表面电位，高于图像部分的电位 潜像，与充电相同。 通过这种再充电，在一个实施例中，图像的轮廓部分具有比其他部分更低的电位。 然后，通过使用充电至与充电极性相同的极性的调色剂，通过反转显影可视化具有较低电位的图像的轮廓部分。 或者在另一个实施例中，图像的轮廓部分具有比其他部分更高的电位。 然后，通过使用以与充电极性相反的极性进行充电的调色剂，通过正常显影，可视化具有高电位的图像的轮廓部分。

公开(公告)号：US3963488A

公开(公告)日：1976-06-15

申请号：US502627

申请日：1974-09-03

申请人： Anatoli Brushenko

发明人： Anatoli Brushenko

IPC分类号： G03G13/045 ,  G03G13/14

CPC分类号： G03G13/045

摘要： A method for enhancing the contrast of a latent electrostatic image on a dielectric surface is disclosed which includes positioning a photoconductive electrode adjacent the dielectric surface; and applying an electrical potential between the photoconductive member and the dielectric surface, while irradiating selected portions of the photoconductive electrode, to cause electrical charge formation on selected portions of the dielectric surface corresponding to the selected photoconductive electrode portions. Thereafter, the applied electrical potential is reduced to essentially zero. In accordance with this invention, during such reduction to essentially zero potential, the entire surface of the photoconductive member is briefly flooded with light to obtain an improvement of the intensity and contrast of the latent electrostatic image formed on the dielectric surface.

摘要翻译： 公开了一种用于增强电介质表面上的静电潜像对比度的方法，其包括将电导电极定位在电介质表面附近; 以及在光电导体和电介质表面之间施加电位，同时照射光导电极的选定部分，以在对应于所选择的光导电极部分的电介质表面的选定部分上形成电荷。 此后，所施加的电势减小到基本为零。 根据本发明，在这种还原到基本上为零的电位期间，光导体的整个表面被光暂时淹没，以获得形成在电介质表面上的静电潜像的强度和对比度的改善。

公开(公告)号：US09915912B2

公开(公告)日：2018-03-13

申请号：US15260019

申请日：2016-09-08

申请人： FUJI XEROX CO., LTD.

发明人： Mitsuhiro Mori ,  Masato Katsukawa

IPC分类号： G03G21/00 ,  G03G21/08 ,  G03G15/047 ,  G03G15/045 ,  G03G13/045 ,  G03G15/00

CPC分类号： G03G21/08 ,  G03G13/045 ,  G03G15/045 ,  G03G15/047 ,  G03G15/5037

摘要： A discharging light quantity adjusting device includes a potential measurement controller that performs: a process of causing a first toner image forming process to charge an image holding member to a first potential and an electrometer to measure an electrostatic potential on the image holding member to obtain a first value, a process of causing a second toner image forming process to charge the image holding member to a second potential and removing a toner image formed by the second toner image forming process, and a process of causing a third toner image forming process to charge the image holding member to a third potential, and causing the electrometer to measure an electrostatic potential on the image holding member to obtain a second value; and a light quantity adjusting unit that adjusts a quantity of a discharging light based on the first and second values.

公开(公告)号：US20170336729A1

公开(公告)日：2017-11-23

申请号：US15590129

申请日：2017-05-09

申请人： Ryouhei Ohi ,  Takafumi Miyazaki ,  Yuuji Meguro ,  Yasuhiro Fujiwara

发明人： Ryouhei Ohi ,  Takafumi Miyazaki ,  Yuuji Meguro ,  Yasuhiro Fujiwara

IPC分类号： G03G13/045 ,  G03G15/06 ,  G03G15/00 ,  G03G15/24 ,  G03G15/02

CPC分类号： G03G13/045 ,  G03G15/0208 ,  G03G15/0275 ,  G03G15/0291 ,  G03G15/043 ,  G03G15/047 ,  G03G15/06 ,  G03G15/24 ,  G03G15/65 ,  G03G21/08 ,  G03G2215/02 ,  G03G2221/00

摘要： A discharging method used in an image forming apparatus includes discharging, with an exposure device, an exposure range of the latent image bearer, and discharging, with a discharger, an area of the latent image bearer outside the exposure range and inside a developing range in a main scanning direction. The exposure range is inside the developing range in the main scanning direction. The discharging with the exposure device and the discharging with the discharger are performed when a rotation of the latent image bearer is stopped after a toner image is transferred from the latent image bearer.

公开(公告)号：US09817330B2

公开(公告)日：2017-11-14

申请号：US14730428

申请日：2015-06-04

申请人： Hiroto Tachibana ,  Hiroyuki Suhara ,  Masato Iio

发明人： Hiroto Tachibana ,  Hiroyuki Suhara ,  Masato Iio

IPC分类号： G03G15/04 ,  G03G15/043 ,  G03G15/045 ,  G03G13/045 ,  B41J2/435

CPC分类号： G03G15/043 ,  B41J2/435 ,  G03G13/045 ,  G03G15/04027 ,  G03G15/045

摘要： An image forming apparatus forms an image by exposing an image bearer on the basis of image data including at least one predetermined pattern. The image forming apparatus includes a processing device that sets an exposure amount of a plurality of exposure pixels. The predetermined pattern is constituted by the plurality of exposure pixels, and a peripheral region of the predetermined pattern in the image data is constituted by a plurality of non-exposure pixels. The processing device sets an exposure amount of an exposure pixel in a specific region that is adjacent to a boundary between the predetermined pattern and the peripheral region and is constituted by at least one exposure pixel in the predetermined pattern, and an exposure amount of an exposure pixel in a region other than the specific region in the predetermined pattern to values different from each other.

公开(公告)号：US08532518B2

公开(公告)日：2013-09-10

申请号：US13191707

申请日：2011-07-27

申请人： Yuusuke Torimaru

发明人： Yuusuke Torimaru

IPC分类号： G03G15/047 ,  G03G15/00 ,  G03G13/045

CPC分类号： G03G15/161 ,  G03G15/0131 ,  G03G15/5054 ,  G03G15/5058 ,  G03G2215/0164

摘要： An image forming apparatus includes an image bearing member; an image forming portion for forming a toner image on the image bearing member, the image forming portion being capable of forming an image to be formed on a recording material and forming a control image for controlling an image density at a position adjacent to the image to be formed on the recording material; an intermediary transfer member rotatable while carrying the toner image transferred from the image bearing member; a transfer member for forming a transfer portion where the toner image is to be transferred from the intermediary transfer member onto the recording material; an electrostatic cleaning member for electrostatically removing the toner deposited on the transfer member; a density detecting portion, provided upstream of the transfer member with respect to a rotational direction of the intermediary transfer member, for detecting a density of the control image transferred on the intermediary transfer member; an adjusting portion for adjusting an image forming condition of the image forming portion depending on an output of the density detecting portion; and a charge amount changing portion for adjusting a charge amount of the control image transferred onto the intermediary transfer member.

摘要翻译： 图像形成装置包括：图像承载部件; 图像形成部分，用于在图像承载部件上形成调色剂图像，图像形成部分能够形成要形成在记录材料上的图像，并且形成用于控制与图像相邻的位置处的图像浓度的控制图像 形成在记录材料上; 中间转印构件，可承载从图像承载构件转印的调色剂图像; 用于形成转印部分的转印部件，其中调色剂图像将从中间转印部件转印到记录材料上; 用于静电去除沉积在转印部件上的调色剂的静电清洁部件; 密度检测部分，设置在所述转印构件的相对于中间转印构件的旋转方向的上游，用于检测在中间转印构件上转印的控制图像的浓度; 调节部分，用于根据浓度检测部分的输出调节图像形成部分的图像形成条件; 以及充电量改变部分，用于调节转印到中间转印部件上的控制图像的电荷量。