公开(公告)号：US5963766A

公开(公告)日：1999-10-05

申请号：US92876

申请日：1998-06-08

申请人： Yukihiko Okuno ,  Suguru Hamamichi ,  Shinichi Yoshimoto ,  Kentaro Katori ,  Mineyuki Sako ,  Yoshihiro Shojo

发明人： Yukihiko Okuno ,  Suguru Hamamichi ,  Shinichi Yoshimoto ,  Kentaro Katori ,  Mineyuki Sako ,  Yoshihiro Shojo

IPC分类号： G03G15/08

CPC分类号： G03G15/0822 ,  G03G2215/0822 ,  G03G2215/0841

摘要： A supply screw 10 and a collection screw 20 for a developing device equip with screw blades having different forms at particular sections so as to make conveying force of developer different depending on sections. Screw blades for big conveying force are attached within sections where developer distribution is dense while screw blades for small conveying force are attached within sections where developer distribution is sparse. In other words, conveying force is made to be greater at sparse-distribution section while smaller at dense-distribution section. Developer delivery is also promoted by providing different conveying force area within carry-up area where developer is carried up from a supply screw 10 to a collection screw 20 or vice versa. By making conveying force of each section different, developer is uniformly delivered to a developing roll 87 whether in width direction or in axial direction. Furthermore, developer circulation in a developing device becomes smooth.

摘要翻译： 用于显影装置的供应螺钉10和收集螺钉20装备在特定部分具有不同形式的螺旋叶片，以使显影剂的输送力根据部分不同。 用于大输送力的螺旋叶片安装在显影剂分布密集的部分内，而用于小传送力的螺旋叶片连接在显影剂分布稀疏的部分内。 换句话说，在稀疏分布部分处的输送力较大，而在致密分布部分则较小。 还可以通过在显影剂从供给螺钉10向收集螺钉20运送的携带区域内提供不同的输送力区域，反之亦然地促进显影剂输送。 通过使各部分的输送力不同，显影剂在宽度方向或轴向方向上均匀地传送到显影辊87。 此外，显影装置中的显影剂循环变得平滑。

公开(公告)号：US5950056A

公开(公告)日：1999-09-07

申请号：US97811

申请日：1998-06-16

申请人： Suguru Hamamichi ,  Mineyuki Sako ,  Kentaro Katori ,  Shinichi Yoshimoto

发明人： Suguru Hamamichi ,  Mineyuki Sako ,  Kentaro Katori ,  Shinichi Yoshimoto

IPC分类号： G03G15/08

CPC分类号： G03G15/0822 ,  G03G2215/0822

摘要： A developing device capable of preventing a reduction of image quality due to disparities in image density or fogging and the like that result from an nonuniform toner concentration or static charge status due to inadequate mixing of a developer. The developing device is provided with a mixing screw for mixing a developer separately from a supply screw for supplying a developer to a developing roller and a collection screw for collecting a developer from the developing roller, the transport direction of the mixing screw being opposite to the transport direction of the supply screw and collection screw.

摘要翻译： 一种能够防止由于显影剂混合不充分而导致由调色剂浓度不均匀或静电充电状态引起的图像浓度或起雾等不均造成的图像质量降低的显影装置。 显影装置设置有用于将显影剂与用于将显影剂供应到显影辊的供应螺杆分开的显影剂混合器和用于从显影辊收集显影剂的收集螺杆，混合螺杆的输送方向与 供应螺丝和收集螺丝的运输方向。

公开(公告)号：US20090175636A1

公开(公告)日：2009-07-09

申请号：US12332664

申请日：2008-12-11

申请人： Toru Hayase ,  Kuniya Matsuura ,  Yuusuke Okuno ,  Kentaro Katori ,  Hiromasa Ueno ,  Hideaki Hayashi

发明人： Toru Hayase ,  Kuniya Matsuura ,  Yuusuke Okuno ,  Kentaro Katori ,  Hiromasa Ueno ,  Hideaki Hayashi

IPC分类号： G03G15/00 ,  G03G21/20 ,  G03G15/08

CPC分类号： G03G15/065 ,  G03G15/0887

摘要： To prevent image defects such as fog and irregularities caused by the accumulation of the oppositely charged toner by flying the toner toward a photoreceptor to compulsorily consume the toner even though the toner is oppositely charged toner having a small charged amount. A potential difference between the photoreceptor and the development roller is set at a value at which the normally charged toner on the development roller can be flown toward the photoreceptor in the development phase at the time of compulsorily consuming the toner, and this potential difference is set at a value at which the flown normally charged toner can be returned to the development roller in the recovery phase. A development duty and a frequency f are set in such a way that a time period in the development phase is larger than a time taken for the normally charged toner on the development roller to fly to a point located midway between the development roller and the photoreceptor and is smaller than a time taken for arriving at the photoreceptor, and a time period in the recovery phase is larger than a time taken before the normally charged toner arrived at the point located midway between the development roller and the photoreceptor arrives at the photoreceptor, returns to the development roller to beaten out the oppositely charged toner and the oppositely charged toner beaten out flies to the photoreceptor.

摘要翻译： 为了防止由于相反充电的调色剂的积聚引起的图像缺陷，例如通过将调色剂朝向感光体飞行而强制消耗调色剂，即使调色剂具有相反电荷的带电量小的调色剂。 感光体和显影辊之间的电位差被设定为在强制消耗调色剂时显影辊上的正常带电的调色剂能够在显影阶段中朝向感光体流动的值，并且设定该电位差 在正常充电的调色剂可以在恢复阶段返回到显影辊的值。 显影负荷和频率f被设定为使得显影阶段的时间段大于显影辊上的正常充电的调色剂飞行到位于显影辊和感光体之间的位置的时间 并且小于到达感光体所需的时间，并且恢复阶段的时间段大于在正常充电的调色剂到达位于显影辊和感光体之间的位置到达感光体的时间， 返回到显影辊，以殴打带相反电荷的调色剂，并将带相反电荷的调色剂扑灭到感光体中。

公开(公告)号：US20060083549A1

公开(公告)日：2006-04-20

申请号：US11020251

申请日：2004-12-27

申请人： Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Akira Hirota ,  Naotoshi Kawai ,  Kentaro Katori

发明人： Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Akira Hirota ,  Naotoshi Kawai ,  Kentaro Katori

IPC分类号： G03G15/22

CPC分类号： G03G21/0064 ,  G03G2215/0119

摘要： It is intended to provide an image forming apparatus capable of conducting charge adjustment of post-transfer residual toner appropriately by securing a contact area of a temporarily-collecting member and an electrode, without applying excessive deformation load to the temporarily-collecting member. There are arranged a brush roller for temporarily collecting post-transfer residual toner, and an electrode of which inwardly-curved face being in contact with the brush roller in a toner charge apparatus. Thereby, charged-in-opposite-polarity toner, out of post-transfer residual toner, is collected by the brush roller, polarity of the toner is reversed to original polarity, and then, returned to a photosensitive drum. The inner face of the electrode, i.e., a contact face of the electrode and the brush roller is formed in an inwardly-curved face. Thereby, a large contact area and light pushing force of the electrode to the brush roller can go together.

摘要翻译： 旨在提供一种图像形成装置，其能够通过确保临时收集构件和电极的接触面积而适当地进行后转印残留调色剂的电荷调节，而不对临时收集构件施加过大的变形负荷。 布置有用于临时收集转印后残留调色剂的刷辊，以及在调色剂充电装置中与刷辊接触的向内弯曲面的电极。 由此，转印后的残留调色剂中的带电的相反极性调色剂由刷辊收集，调色剂的极性反转到原始极性，然后返回到感光鼓。 电极的内表面，即电极和刷辊的接触面形成为向内弯曲的面。 因此，电极对刷辊的大的接触面积和轻推力可以一起走。

公开(公告)号：US06388768B2

公开(公告)日：2002-05-14

申请号：US09020281

申请日：1998-02-09

申请人： Yoshinobu Hada ,  Yukihiko Okuno ,  Masahiro Kouzaki ,  Kentaro Katori ,  Katsuyuki Hirata

发明人： Yoshinobu Hada ,  Yukihiko Okuno ,  Masahiro Kouzaki ,  Kentaro Katori ,  Katsuyuki Hirata

IPC分类号： B41B100

CPC分类号： H04N1/6033 ,  G03G15/01 ,  G03G2215/00042 ,  G03G2215/00063 ,  G03G2215/018 ,  H04N1/4078

摘要： An image forming apparatus for forming an image with few defects even when making a copy from a copied image. When forming an image, a standard pattern is formed outside the image forming area in accordance with standard pattern data for color correction. When reading the image together with the standard pattern formed above, the color correction conditions for the image data are modified in accordance with the comparison result between the read standard pattern data and the standard pattern data for color correction. Copying is then performed on a copying paper.

摘要翻译： 一种图像形成装置，即使在从复印图像进行复制时也可以形成缺陷少的图像。 当形成图像时，根据用于颜色校正的标准图案数据，在图像形成区域外部形成标准图案。 当与上述形成的标准图案一起读取图像时，根据读取的标准图案数据和用于颜色校正的标准图案数据之间的比较结果来修改图像数据的颜色校正条件。 然后在复印纸上进行复印。

公开(公告)号：US5949963A

公开(公告)日：1999-09-07

申请号：US814920

申请日：1997-03-12

申请人： Katsuyuki Hirata ,  Kentaro Katori ,  Yoshinobu Hada ,  Hironobu Nakata ,  Yoshihiko Hirota

发明人： Katsuyuki Hirata ,  Kentaro Katori ,  Yoshinobu Hada ,  Hironobu Nakata ,  Yoshihiko Hirota

IPC分类号： B41J2/52 ,  B41J2/44 ,  B41J2/47 ,  H04N1/40 ,  H04N1/405 ,  H04N1/407 ,  B41B15/00 ,  B41J2/385

CPC分类号： H04N1/40037 ,  B41J2/471 ,  H04N1/407

摘要： In a digital full color copying machine, one pixel on a photoconductor is divided into four subdivided small pixels. Functions a-d are assigned to each subdivided small pixel. Functions a-d are linear functions with density data as a parameter. The slope of functions a-d becomes smaller in sequential order. Exposure data of the four subdivided small pixels is calculated according to the density data of a pixel and functions a-d to expose each subdivided small pixel. A peak can be established in the exposure amount distribution to form a deeper latent image. Accordingly, resolution and graininess of the halftone area are improved.

摘要翻译： 在数字全彩色复印机中，光电导体上的一个像素被分成四个细分的小像素。 函数a-d被分配给每个细分的小像素。 函数a-d是密度数据作为参数的线性函数。 函数a-d的斜率按顺序变小。 根据像素的密度数据计算四个细分的小像素的曝光数据，并且对a-d进行功能，以暴露每个细分的小像素。 可以在曝光量分布中建立峰以形成更深的潜像。 因此，改善了半色调区域的分辨率和颗粒度。

公开(公告)号：US5933255A

公开(公告)日：1999-08-03

申请号：US610713

申请日：1996-03-04

申请人： Katsuyuki Hirata ,  Yoshinobu Hada ,  Kentaro Katori ,  Masahiro Kouzaki

发明人： Katsuyuki Hirata ,  Yoshinobu Hada ,  Kentaro Katori ,  Masahiro Kouzaki

IPC分类号： B41J2/52 ,  B41J2/44 ,  B41J2/525 ,  G03G15/04 ,  H04N1/40 ,  H04N1/407

CPC分类号： B41J2/471 ,  B41J2/525 ,  H04N1/40037

摘要： In a digital image forming apparatus, when a latent image is formed on a photoconductor by modulating optical intensity of laser beam, the laser beam is emitted in a period of a duty ratio while modulated according to image data, and the image is formed on a sheet of paper. This process is repeated for four colors for a color document. The duty ratio, defined as a ratio of a light-emitting time of a light exposing the photoconductor to a period for exposing a dot, is changed in the same document. For example, the light emission timing pattern is changed between odd and even lines. In another example, the light-emission timings may be changed at least for one of the reproduction colors. The light-emission timing patterns may be provided for each of reproduction colors. The light-emission timing patterns may be changed to have a constant or different screening angle between colors. Image quality of a half-tone image is improved by using such patterns.

摘要翻译： 在数字图像形成装置中，当通过调制激光束的光强度在感光体上形成潜像时，在按照图像数据进行调制的情况下，在占空比的周期内发射激光束，并且图像形成在 一张纸。 对于彩色文档，为四种颜色重复此过程。 定义为曝光光电导体的光的发光时间与曝光点的周期的比率的占空比在相同的文献中改变。 例如，发光定时图案在奇数行和偶数行之间改变。 在另一示例中，至少对于一种再现颜色可以改变发光定时。 可以为每种再现颜色提供发光定时图案。 发光定时图案可以改变为在颜色之间具有恒定或不同的屏幕角度。 通过使用这种图案可以提高半色调图像的图像质量。

公开(公告)号：US08406645B2

公开(公告)日：2013-03-26

申请号：US12473541

申请日：2009-05-28

申请人： Yuusuke Okuno ,  Kentaro Katori ,  Kanji Nakayama ,  Tomo Kitada ,  Toru Hayase

发明人： Yuusuke Okuno ,  Kentaro Katori ,  Kanji Nakayama ,  Tomo Kitada ,  Toru Hayase

IPC分类号： G03G15/06

CPC分类号： G03G15/0813 ,  G03G15/065 ,  G03G2215/0634

摘要： Developing bias is set as follows. An electric field intensity between a developing roller and a photoconductor is set to cause normally-charged toner to fly in an image area and not to cause the toner to fly in a background area. Thus, the normally-charged toner does not fly in the background area. The normally-charged toner caused to fly is therefore unlikely to flick low-charged toner and oppositely-charged toner. The low-charged toner and the oppositely-charged toner will not adhere to the background area and cause image fogging. Accordingly, an image forming apparatus can be provided to prevent the low-charged toner and the oppositely-charged toner from adhering to the background area of an electrostatic latent image on the photoconductor and to avoid the occurrence of image fogging in the background area on a printed material.

摘要翻译： 开发偏差设置如下。 设置显影辊和光电导体之间的电场强度以使正常充电的调色剂在图像区域中飞行，并且不会使调色剂在背景区域中飞行。 因此，正常充电的调色剂在背景区域不飞。 因此，因飞扬的正常充电的调色剂不太可能会使低充电的调色剂和带有相反电荷的调色剂翻转。 低电量调色剂和带相反电荷的调色剂不会粘附到背景区域并导致图像起雾。 因此，可以提供图像形成装置，以防止低电荷调色剂和相反电荷的调色剂粘附到感光体上的静电潜像的背景区域上，并且避免在背景区域上发生图像起雾 印刷材料。

公开(公告)号：US07853161B2

公开(公告)日：2010-12-14

申请号：US12332664

申请日：2008-12-11

申请人： Toru Hayase ,  Kuniya Matsuura ,  Yuusuke Okuno ,  Kentaro Katori ,  Hiromasa Ueno ,  Hideaki Hayashi

发明人： Toru Hayase ,  Kuniya Matsuura ,  Yuusuke Okuno ,  Kentaro Katori ,  Hiromasa Ueno ,  Hideaki Hayashi

IPC分类号： G03G15/08 ,  G03G15/00

CPC分类号： G03G15/065 ,  G03G15/0887

摘要： A potential difference between the photoreceptor and the development roller is set at a value at which the normally charged toner on the development roller can be flown toward the photoreceptor in the development phase at the time of compulsorily consuming the toner, and this potential difference is set at a value at which the flown normally charged toner can be returned to the development roller in the recovery phase.

摘要翻译： 感光体和显影辊之间的电位差被设定为在强制消耗调色剂时显影辊上的正常带电的调色剂能够在显影阶段中朝向感光体流动的值，并且设定该电位差 在正常充电的调色剂可以在恢复阶段返回到显影辊的值。

公开(公告)号：US20090304404A1

公开(公告)日：2009-12-10

申请号：US12473541

申请日：2009-05-28

申请人： Yuusuke OKUNO ,  Kentaro Katori ,  Kanji Nakayama ,  Tomo Kitada ,  Toru Hayase

发明人： Yuusuke OKUNO ,  Kentaro Katori ,  Kanji Nakayama ,  Tomo Kitada ,  Toru Hayase

IPC分类号： G03G15/08 ,  G03G15/00

CPC分类号： G03G15/0813 ,  G03G15/065 ,  G03G2215/0634

摘要： Developing bias is set as follows. An electric field intensity between a developing roller and a photoconductor is set to cause normally-charged toner to fly in an image area and not to cause the toner to fly in a background area. Thus, the normally-charged toner does not fly in the background area. The normally-charged toner caused to fly is therefore unlikely to flick low-charged toner and oppositely-charged toner. The low-charged toner and the oppositely-charged toner will not adhere to the background area and cause image fogging. Accordingly, an image forming apparatus can be provided to prevent the low-charged toner and the oppositely-charged toner from adhering to the background area of an electrostatic latent image on the photoconductor and to avoid the occurrence of image fogging in the background area on a printed material.

摘要翻译： 开发偏差设置如下。 设置显影辊和光电导体之间的电场强度以使正常充电的调色剂在图像区域中飞行，并且不会使调色剂在背景区域中飞行。 因此，正常充电的调色剂不会在背景区域中飞行。 因此，因飞扬的正常充电的调色剂不太可能会使低充电的调色剂和带有相反电荷的调色剂翻转。 低电量调色剂和带相反电荷的调色剂不会粘附到背景区域并导致图像起雾。 因此，可以提供图像形成装置，以防止低电荷调色剂和相对充电的调色剂粘附到感光体上的静电潜像的背景区域上，并且避免在背景区域上发生图像起雾 印刷材料。