公开(公告)号：US06978094B2

公开(公告)日：2005-12-20

申请号：US10648492

申请日：2003-08-25

Applicant: Yutaka Miyasaka ,  Kimio Nishizawa ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi ,  Eiji Nomura

Inventor： Yutaka Miyasaka ,  Kimio Nishizawa ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi ,  Eiji Nomura

IPC: G03G15/08 ,  G03G15/10

CPC classification number: G03G15/0849 ,  G03G15/0853 ,  G03G15/0893 ,  G03G2215/0607

Abstract: This invention relates to an image forming apparatus including a developing unit which develops an electrostatic latent image formed on an image carrier by using a two-component developing agent containing polymerized toner. The developing unit includes a supply/convey member which conveys the two-component developing agent in the axial direction while agitating it and a toner density sensor which detects the toner density of the two-component developing agent. The toner density sensor is placed to be in a non-contact state with respect to the supply/convey member and oppose it with a gap of 0.8 mm or less. The diameter of the supply/convey member is set to 23 mm or more.

Abstract translation: 本发明涉及一种图像形成装置，其包括显影单元，该显影单元通过使用含有聚合调色剂的双组分显影剂来显影形成在图像载体上的静电潜像。 显影单元包括供给/输送构件，其在搅动时输送双组分显影剂在轴向方向上;以及调色剂浓度传感器，其检测双组分显影剂的调色剂浓度。 调色剂浓度传感器被放置成相对于供给/传送部件处于非接触状态，并以0.8mm或更小的间隙相对。 供给/输送部件的直径设定为23mm以上。

公开(公告)号：US20050232648A1

公开(公告)日：2005-10-20

申请号：US10992019

申请日：2004-11-17

Applicant: Kimio Nishizawa ,  Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

Inventor： Kimio Nishizawa ,  Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

IPC: B41J2/44 ,  G03G15/00 ,  G03G15/01 ,  G03G15/16 ,  G03G21/14

CPC classification number: G03G15/5058 ,  G03G2215/0119

Abstract: A color image forming apparatus including: a plurality of developing devices for forming a black toner image and a color toner image; an image carrier for carrying toner images; a density detecting device for detecting densities of the black toner image and the color toner image each on the image carrier, the density detecting device having a light emitting element and a light sensitive element; and a controller for the density detecting device; wherein, when detecting a density of the black toner image, the controller controls a drive voltage of the light emitting element so that an amount of received light from a non-image area becomes a first predetermined value; and when detecting a density of the color toner image, the controller controls the drive voltage so that an amount of received light from a non-image area becomes a second predetermined value.

Abstract translation: 一种彩色图像形成装置，包括：多个用于形成黑色调色剂图像和彩色调色剂图像的显影装置; 用于承载调色剂图像的图像载体; 密度检测装置，用于检测图像载体上的黑色调色剂图像和彩色调色剂图像的浓度，所述浓度检测装置具有发光元件和感光元件; 和密度检测装置的控制器; 其中，当检测到黑色调色剂图像的浓度时，控制器控制发光元件的驱动电压，使得来自非图像区域的接收光量成为第一预定值; 并且当检测到彩色调色剂图像的浓度时，控制器控制驱动电压，使得来自非图像区域的接收光量成为第二预定值。

公开(公告)号：US06564022B2

公开(公告)日：2003-05-13

申请号：US09927924

申请日：2001-08-10

Applicant: Nobuyasu Tamura ,  Yutaka Miyasaka ,  Kimio Nishizawa

Inventor： Nobuyasu Tamura ,  Yutaka Miyasaka ,  Kimio Nishizawa

IPC: G03G1500

CPC classification number: G03G15/5008 ,  G03G13/09 ,  G03G2215/00042

Abstract: An image forming apparatus includes an image carrier on which a latent image is formed; and a developing roller provided in the vicinity of a surface of the image carrier for conveying a two-component developer to develop the latent image, wherein the following conditional inequality (1) is satisfied, 1

Abstract translation: 图像形成装置包括其上形成潜像的图像载体; 以及设置在图像载体的表面附近的用于输送双组分显影剂以显影潜像的显影辊，其中满足以下条件不等式（1）：1 <（Vs / Vp）<=（Dsd /Dws)x0.129。 。 。 （1）其中Vs / Vp表示显影辊与图像载体的相对速度，Dsd（mum）表示图像载体的表面与显影辊的表面之间的距离，Dws（mg / cm 2）表示 已经被显影辊保持和传送的显影剂的量。

公开(公告)号：US06816696B2

公开(公告)日：2004-11-09

申请号：US10367427

申请日：2003-02-14

Applicant: Kimio Nishizawa ,  Yutaka Miyasaka ,  Nobuyasu Tamura

Inventor： Kimio Nishizawa ,  Yutaka Miyasaka ,  Nobuyasu Tamura

IPC: G03G1509

CPC classification number: G03G13/09

Abstract: In an image forming apparatus including a developing device, an inequality of 1≦(&agr;/100)×Vr×Hr1/3

公开(公告)号：US07865099B2

公开(公告)日：2011-01-04

申请号：US12015141

申请日：2008-01-16

Applicant: Kazutoshi Kobayashi ,  Yutaka Miyasaka ,  Nobuyasu Tamura

Inventor： Kazutoshi Kobayashi ,  Yutaka Miyasaka ,  Nobuyasu Tamura

IPC: G03G15/06 ,  G03G15/00

CPC classification number: G03G15/065 ,  G03G15/0803 ,  G03G2215/00029 ,  G03G2215/00033

Abstract: There is described an image forming apparatus, which makes it possible to suppress quality degradation of an image on the basis of a developing electric current profile without optically detecting density of a patch image. The image forming apparatus includes: a developing current detecting sensor to detect a developing current; and a control section that conducts consecutive operations of: creating a detecting-use image pattern for detecting a developing characteristic, by aligning a plurality of image patterns, which are different from each other in density; forming a latent image of the detecting-use image pattern onto the photoreceptor element; finding a developing electric current profile, which represents a transition of the developing electric current flowing during an operation of developing the detecting-use image pattern, from an outputted signal of the developing current; and changing an image forming condition, based on the developing electric current profile found by the finding operation.

Abstract translation: 描述了一种图像形成装置，其可以基于显影电流分布来抑制图像的质量劣化，而不光学地检测贴片图像的密度。 图像形成装置包括：显影电流检测传感器，用于检测显影电流; 以及控制部，其进行以下连续操作：通过使密度彼此不同的多个图像图像对齐来创建用于检测显影特性的检测用图像图案; 将所述检测用图像图案的潜像形成在所述感光体元件上; 从显影电流的输出信号中发现表示在显影检测用图像图案的操作期间流动的显影电流的转变的显影电流曲线; 以及基于由寻找操作发现的显影电流曲线来改变图像形成条件。

公开(公告)号：US20070110463A1

公开(公告)日：2007-05-17

申请号：US11507617

申请日：2006-08-22

Applicant: Mineyuki Sako ,  Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

Inventor： Mineyuki Sako ,  Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

IPC: G03G15/00

CPC classification number: G03G15/5062 ,  G03G15/5037

Abstract: An image forming apparatus includes: a toner image carrier which carries a toner image thereon; a recording medium selection information input section to which recording medium selection information is inputted to select a recording medium to which the toner image carried on the toner image carrier is transferred; a fog controller which sets a fog control parameter value to control a fogging level of the toner image carrier; and an image forming section which forms the toner image to be carried on the toner image carrier based on the fog control parameter set by the fog controller. The fog controller sets the fog control parameter value so that the fogging level of the toner image carrier when the recording medium selection information inputted corresponds to a coated sheet, is lower than that when the recording medium selection information inputted corresponds to a normal sheet.

Abstract translation: 图像形成装置包括：在其上承载调色剂图像的调色剂图像载体; 输入记录介质选择信息的记录介质选择信息输入部分，用于选择传送调​​色剂图像载体上承载的调色剂图像的记录介质; 雾控制器，其设置雾控制参数值以控制调色剂图像载体的雾化水平; 以及图像形成部，其基于由雾化控制器设定的雾度控制参数，形成要承载在调色剂图像载体上的调色剂图像。 雾控制器设置雾控制参数值，使得当输入的记录介质选择信息对应于涂布纸时，调色剂图像载体的雾化水平低于输入的记录介质选择信息对应于普通纸张时的雾度水平。

公开(公告)号：US07962073B2

公开(公告)日：2011-06-14

申请号：US12015106

申请日：2008-01-16

Applicant: Kazutoshi Kobayashi ,  Yutaka Miyasaka ,  Nobuyasu Tamura

Inventor： Kazutoshi Kobayashi ,  Yutaka Miyasaka ,  Nobuyasu Tamura

IPC: G03G15/09

CPC classification number: G03G15/0921 ,  G03G2215/0634

Abstract: An image forming apparatus having an image carrier for forming an electrostatic latent image and a developing unit for developing the electrostatic latent image with a two-component developing agent, the developing unit includes: a developing agent carrier for developing the electrostatic latent image to form a visible image, having inside thereof a development main magnetic pole for forming a bristle of a magnetic brush; and a plurality of magnetic poles for conveying the developing agent, wherein the developing unit performs a counter type contact developing method, and wherein, a development area is formed so that, a contact width of the bristle of the magnetic brush is 70% or less with respect to a development width, and a center position of the contact width is positioned on an upstream side with respect to a center position of the development width in a rotation direction of the image carrier.

Abstract translation: 一种具有用于形成静电潜像的图像载体和用于使用双组分显影剂显影静电潜像的显影单元的图像形成装置，所述显影单元包括：用于显影静电潜像以形成静电潜像的显影剂载体 可见图像，其内部具有用于形成磁刷的刷毛的显影主磁极; 以及用于输送显影剂的多个磁极，其中显影单元执行反式接触显影方法，并且其中形成显影区域使得磁刷的刷毛的接触宽度为70％以下 相对于显影宽度，并且接触宽度的中心位置位于相对于图像载体的旋转方向的显影宽度的中心位置的上游侧。

公开(公告)号：US07877029B2

公开(公告)日：2011-01-25

申请号：US11507616

申请日：2006-08-22

Applicant: Mineyuki Sako ,  Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

Inventor： Mineyuki Sako ,  Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

IPC: G03G15/00

CPC classification number: G03G15/5037 ,  G03G15/5033 ,  G03G2215/0119

Abstract: An image forming apparatus includes a fog controller to control a fogging level of a toner image carrier by adjusting a fog control parameter on the basis of the fogging level detected by a fogging level detection section and the target fogging level stored in a memory section. While varying a value of the fog control parameter, the fog controller makes a detection pattern forming section to form a series of detection patterns between toner images for each page on the toner image carrier, makes the fogging level detection section to detect each of fogging levels of the series of detection patterns, determines a target fog control parameter value on the basis of each fogging level of the series of detection patterns detected and the target fogging level stored, and adjusts the fog control parameter on the basis of the target fog control parameter value.

Abstract translation: 图像形成装置包括雾化控制器，其通过基于由雾化水平检测部检测到的雾化水平和存储在存储部中的目标雾化水平来调整雾度控制参数来控制调色剂图像载体的雾化水平。 在改变灰雾控制参数的值的同时，雾化控制器形成检测图案形成部分，以在调色剂图像载体上的每一页的调色剂图像之间形成一系列检测图案，使得雾化水平检测部分检测每个雾度水平 基于所检测的一系列检测图案的每个雾化水平和存储的目标雾化水平来确定目标雾控制参数值，并且基于目标雾控制参数来调整雾控制参数 值。

公开(公告)号：US20060093406A1

公开(公告)日：2006-05-04

申请号：US11182785

申请日：2005-07-18

Applicant: Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

Inventor： Yutaka Miyasaka ,  Nobuyasu Tamura ,  Kazutoshi Kobayashi

IPC: G03G15/09

CPC classification number: G03G15/0921

Abstract: An image forming apparatus incorporating: an image forming body; and a developing unit having a developer carrier, a magnetic field generator, a developer restriction member, a first conveyer, and a second conveyer, wherein the magnetic field generator has: a main magnetic pole; pickup magnetic pole; and a strip-off magnetic pole, wherein the developing unit satisfies following conditions: (a) the second conveyer is a screw conveyer having an outer diameter within 24 mm-30 mm, rotating speed of 300-500 rpm, (b) the pickup magnetic pole is arranged at an angle of 25°-60° downstream with a line connecting a rotation centers of the developer carrier and the second conveyer, (c) the strip-off magnetic pole is arranged at 60°-80° upward with the line,(d) a transporting capability of the first conveyer is larger than that of the second conveyer.

Abstract translation: 一种图像形成装置，包括：成像体; 以及具有显影剂载体，磁场发生器，显影剂限制构件，第一输送器和第二输送器的显影单元，其中所述磁场发生器具有：主磁极; 拾磁极; 和剥离磁极，其中显影单元满足以下条件：（a）第二输送机是外径在24mm-30mm，转速为300-500rpm的螺旋输送机，（b）拾取器 磁极以下方的25°-60°的角度布置有连接显影剂载体和第二输送机的旋转中心的线，（c）剥离磁极以60°-80°向上设置， （d）第一输送机的输送能力大于第二输送机的输送能力。

公开(公告)号：US07991318B2

公开(公告)日：2011-08-02

申请号：US12184453

申请日：2008-08-01

Applicant: Nobuyasu Tamura ,  Yutaka Miyasaka ,  Kazutoshi Kobayashi

Inventor： Nobuyasu Tamura ,  Yutaka Miyasaka ,  Kazutoshi Kobayashi

IPC: G03G21/20

CPC classification number: G03G15/0815

Abstract: An image forming apparatus includes an image carrier, a developer carrier arranged to face the image carrier to form a developing nip portion, which carries developer containing toner for developing a latent image formed on the image carrier, a developing unit having a developer regulating member that regulates a thickness of a layer of the carried developer, an air sending duct having an air sending path provided on the developing unit, which sends air to the developer carrier and a suction duct having a suction path provided on the developing unit, which sucks air from the developer carrier. The developer regulating member is arranged on an air sending duct side, and the air sending and suction paths are arranged to be connected by forming a space surrounded by a surface of the developer carrier, the developer regulating member and a wall forming the suction path.

Abstract translation: 图像形成装置包括图像载体，显影剂载体，其布置成面对图像载体以形成显影夹持部，该显影夹持部承载含有用于显影形成在图像载体上的潜像的调色剂的显影剂;显影单元，具有显影剂调节构件， 调节所携带的显影剂的层的厚度，送风管道，其具有设置在显影单元上的送风路径，其将空气送至显影剂载体;以及抽吸管道，其具有设置在显影单元上的吸入路径，吸入空气吸入空气 来自开发商运营商。 显影剂调节构件布置在送风管道侧，并且排气和吸入路径被布置成通过形成由显影剂载体的表面，显影剂调节构件和形成吸入路径的壁包围的空间来连接。