公开(公告)号：US08218982B2

公开(公告)日：2012-07-10

申请号：US12395916

申请日：2009-03-02

Applicant: Katsuyuki Hirata ,  Kazuomi Sakatani ,  Mitsuru Obara ,  Yoshinori Tsutsumi

Inventor： Katsuyuki Hirata ,  Kazuomi Sakatani ,  Mitsuru Obara ,  Yoshinori Tsutsumi

IPC: G03G15/08

CPC classification number: G03G15/0853 ,  G03G15/0887 ,  G03G15/0893 ,  G03G2215/0822 ,  G03G2215/0838

Abstract: The developing apparatus, having stirring members for conveying and stirring developer-tank-contained developer and a developer holder, comprises a developer replenishing tank; a magnetic-type toner concentration detecting sensor; a trickle-type discharging mechanism; conveying state switching device for temporarily blocking the flow of the developer-tank-contained developer and for temporarily switching the circulating state of the developer-tank-contained developer to the staying state thereof; and a controller for controlling replenishment operation for replenishing the toner and the carrier for replenishment to the developer tank when the toner concentration is lower than a predetermined reference toner concentration, wherein the controller determines the amounts of the toner and the carrier to be replenished on the basis of the calculated toner concentration and the estimated amount of the developer.

Abstract translation: 具有用于输送和搅拌含显影剂罐的显影剂和显影剂载体的搅拌构件的显影装置包括显影剂补充槽; 磁性调色剂浓度检测传感器; 涓流式排放机构; 输送状态切换装置，用于暂时阻止显影剂罐盛装的显影剂的流动，并暂时将显影剂罐盛装的显影剂的循环状态切换到停留状态; 以及控制器，用于当调色剂浓度低于预定的参考调色剂浓度时，控制用于补充调色剂和载体以补充显影剂罐的补充操作，其中控制器确定调色剂和待补充的载体的量 计算出的调色剂浓度的基础和显影剂的估计量。

公开(公告)号：US20110044705A1

公开(公告)日：2011-02-24

申请号：US12842514

申请日：2010-07-23

Applicant: Hironori AKASHI ,  Soh Hirota ,  Mitsuru Obara ,  Takashi Harashima ,  Kanako Kibihara

Inventor： Hironori AKASHI ,  Soh Hirota ,  Mitsuru Obara ,  Takashi Harashima ,  Kanako Kibihara

IPC: G03G15/08

CPC classification number: G03G15/5058 ,  G03G15/0131 ,  G03G15/0853 ,  G03G2215/00059 ,  G03G2215/00063

Abstract: A color image forming apparatus having photosensitive members; developing devices for developing electrostatic latent images formed on the photosensitive members into toner images with developers comprising toner and carriers; toner concentration sensors for detecting toner concentrations of the developers in the respective developing devices; a toner image bearing member for bearing the toner images temporarily; a toner adherence amount sensor for detecting toner adherence amounts of the toner images held on the image bearing member; and a controller for calculating, with respect to the developing devices, individual optimal developing bias voltage ranges within which a target toner adherence amount can be achieved while the toner concentrations of the developers are within a predetermined toner concentration range from a lower limit to an upper limit, so as to specify a common optimal developing bias voltage range that are commonly suitable for all the developing devices to achieve the target toner adherence amount while the toner concentrations of the developers in the developing devices are within the predetermined toner concentration range, and for calculating target toner concentrations of the developers in the respective developing devices to achieve the target toner adherence amount while a voltage within the common optimal developing bias voltage range is applied between each of the photosensitive members and each of the developing devices.

Abstract translation: 具有感光部件的彩色图像形成装置; 用于将形成在感光构件上的静电潜像显影成具有包括调色剂和载体的显影剂的调色剂图像的显影装置; 用于检测各显影装置中的显影剂的调色剂浓度的调色剂浓度传感器; 用于临时承载调色剂图像的调色剂图像承载部件; 调色剂附着量传感器，用于检测保持在图像承载部件上的调色剂图像的调色剂附着量; 以及控制器，用于相对于显影装置计算个体最佳显影偏压电压范围，其中可以在显影剂的调色剂浓度在从下限到上限的预定调色剂浓度范围内实现目标调色剂附着量 限定，以便指定通常适用于所有显影装置以实现目标调色剂粘附量的共同的最佳显影偏压电压范围，同时显影装置中的显影剂的调色剂浓度在预定调色剂浓度范围内，并且对于 计算各显影装置中的显影剂的目标调色剂浓度，以实现目标调色剂附着量，同时在每个感光构件和每个显影装置之间施加共同的最佳显影偏压电压范围内的电压。

公开(公告)号：US07522864B2

公开(公告)日：2009-04-21

申请号：US11600087

申请日：2006-11-16

Applicant: Kazuomi Sakatani ,  Soh Hirota ,  Masahiro Kouzaki ,  Mitsuru Obara ,  Masaki Tanaka

Inventor： Kazuomi Sakatani ,  Soh Hirota ,  Masahiro Kouzaki ,  Mitsuru Obara ,  Masaki Tanaka

IPC: G03G15/01

CPC classification number: G03G15/0126

Abstract: In an image forming apparatus of the present invention, a developing unit for magenta contains magenta-type toner for pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on a chromaticity diagram, in comparison with genuine-magenta toner for full-color image forming, and likewise, a developing unit for cyan contains cyan-type toner for the pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on the chromaticity diagram, in comparison with genuine-cyan toner for the full-color image forming.

Abstract translation: 在本发明的图像形成装置中，用于洋红的显影单元包含用于伪全色图像形成的品红色调色剂，其色度点与色度图上的黄色色调相比变化，与正品品红色调色剂相比较 相似地，用于青色的显影单元包含用于伪全色图像形成的青色调色剂，其色度点在色度图上更接近于黄色色调，与用于全色的真正青色调色剂相比 彩色图像形成。

公开(公告)号：US20070196126A1

公开(公告)日：2007-08-23

申请号：US11704242

申请日：2007-02-09

Applicant: Masaki Tanaka ,  Katsuyuki Hirata ,  Mitsuru Obara ,  Toshio Tsuboi ,  Tatsuya Isono

Inventor： Masaki Tanaka ,  Katsuyuki Hirata ,  Mitsuru Obara ,  Toshio Tsuboi ,  Tatsuya Isono

IPC: G03G15/16

CPC classification number: G03G15/168 ,  G03G15/0194 ,  G03G2215/1614

Abstract: An image forming apparatus includes a secondary transfer roller that becomes a pressed state to make an intermediate transfer belt perform a transfer process and can move between the pressed state and a separated state, a press and separation driving device for driving the secondary transfer roller to become the pressed state and the separated state, a press and separation detecting device for detecting a pressed or separated state, and a voltage applying portion for applying a voltage between the intermediate transfer belt and the secondary transfer roller. The press and separation detecting device includes a resistor for detecting a current and a determination portion for determining a pressed or separated state in accordance with the detected current.

Abstract translation: 图像形成装置包括：二次转印辊，其成为压制状态，以使中间转印带进行转印处理并且能够在压制状态和分离状态之间移动，用于驱动二次转印辊的压力分离驱动装置成为 按压状态和分离状态，用于检测压制或分离状态的按压分离检测装置，以及用于在中间转印带和二次转印辊之间施加电压的电压施加部。 按压分离检测装置包括用于检测电流的电阻器和用于根据检测到的电流确定按压或分离状态的确定部分。

公开(公告)号：US07212752B2

公开(公告)日：2007-05-01

申请号：US10976773

申请日：2004-11-01

Applicant: Soh Hirota ,  Masaki Tanaka ,  Masahiro Kouzaki ,  Kazuomi Sakatani ,  Mitsuru Obara

Inventor： Soh Hirota ,  Masaki Tanaka ,  Masahiro Kouzaki ,  Kazuomi Sakatani ,  Mitsuru Obara

IPC: G03G15/08

CPC classification number: G03G15/0853 ,  G03G15/0877 ,  G03G2215/0602 ,  G03G2215/0614

Abstract: An electrophotographic image forming apparatus includes a developer reservoir for accommodating a single-component mixed developer including two types of toner having a generally identical hue and different reflection densities. A magnetic substance is added to one of the two types of toner. The apparatus also includes a detector for detecting a magnetic permeability of the developer in the developer reservoir and a unit for determining a mixture ratio of the two types of toner based on the magnetic permeability of the developer detected by the detector.

Abstract translation: 电子照相成像设备包括用于容纳单组分混合显影剂的显影剂储存器，其包括具有大致相同色调和不同反射浓度的两种类型的调色剂。 向这两种类型的调色剂之一加入磁性物质。 该装置还包括用于检测显影剂储存器中的显影剂的磁导率的检测器和用于基于由检测器检测到的显影剂的磁导率来确定两种类型的调色剂的混合比的单元。

公开(公告)号：US06366702B1

公开(公告)日：2002-04-02

申请号：US09103308

申请日：1998-06-23

Applicant: Mitsuru Obara ,  Atsushi Ishikawa ,  Kenichi Sawada

Inventor： Mitsuru Obara ,  Atsushi Ishikawa ,  Kenichi Sawada

IPC: G06K936

CPC classification number: H04N1/41

Abstract: The method and apparatus particularly adapted for reducing the storage capacity of line memories needed for temporarily storing image data for lines until image data for the last line is obtained in digital filtering. Inputted image data are divided into a plurality of blocks, each of which consists of image data obtained from n pixels. The integer n may assume a value of 8, 16, 32, etc. The constituents of one block after another are compressed such that image data consisting of 8 bits per pixel are converted into encoded data consisting of 2 bits per pixel. Data on a dynamic range and an average value for each block are added as a headder to the encoded data. Compressed image data are taken out of a buffer memory after being temporarily stored therein and, together with or separately from compressed image data newly outputted from a compression unit, subjected to image processing such as MTF correction in an arithmetic unit. Image processing to be carried out in the arithmetic unit normally includes expansion and correction to be carried out independently of or simultaneously with each other.

Abstract translation: 该方法和装置特别适用于减少用于临时存储用于行的图像数据所需的行存储器的存储容量，直到在数字滤波中获得用于最后一行的图像数据。 输入图像数据被分成多个块，每个块由从n个像素获得的图像数据组成。 整数n可以采取8,16,32等的值。一个块之后的一个块的组成被压缩，使得由每像素8位组成的图像数据被转换成由每像素2位组成的编码数据。 关于每个块的动态范围和平均值的数据作为编码数据的头像被添加。 压缩图像数据在暂时存储之后从缓冲存储器中取出，并且与压缩单元新输出的压缩图像数据一起或分开地在运算单元中进行诸如MTF校正的图像处理。 在运算单元中执行的图像处理通常包括彼此独立地或同时进行的扩展和校正。

公开(公告)号：US08412063B2

公开(公告)日：2013-04-02

申请号：US12842501

申请日：2010-07-23

Applicant: Mitsuru Obara ,  Soh Hirota ,  Hironori Akashi ,  Takashi Harashima ,  Kanako Kibihara

Inventor： Mitsuru Obara ,  Soh Hirota ,  Hironori Akashi ,  Takashi Harashima ,  Kanako Kibihara

IPC: G03G15/00

CPC classification number: G03G15/5058 ,  G03G15/0131 ,  G03G15/0194 ,  G03G2215/00059 ,  G03G2215/0164

Abstract: An image forming apparatus has an image bearing member that moves at a specified speed; a toner pattern forming section for forming toner patterns of a specified type on the image bearing member under specified image forming conditions; a toner pattern detection member for detecting the toner patterns formed on the image bearing member; a toner amount varying section for varying a target amount of toner to adhere to the toner patterns; and a control section that calculates a toner adherence amount and a toner adherence position from detection results outputted from the toner pattern detection member and that performs image stabilization control to adjust the image forming conditions based on the calculation results. In the image stabilization control, the control section uses detection results of the same toner patterns both to calculate the toner adherence amount and to calculate the toner adherence position.

Abstract translation: 图像形成装置具有以规定速度移动的图像承载部件; 调色剂图案形成部分，用于在指定的图像形成条件下在图像承载部件上形成指定类型的调色剂图案; 用于检测形成在图像承载部件上的调色剂图案的调色剂图案检测部件; 调色剂量变化部分，用于改变调色剂的目标量以附着到调色剂图案上; 以及控制部分，其根据从调色剂图案检测部件输出的检测结果计算调色剂附着量和调色剂粘附位置，并且执行图像稳定控制，以根据计算结果调整图像形成条件。 在图像稳定控制中，控制部分使用相同调色剂图案的检测结果来计算调色剂附着量并计算调色剂附着位置。

公开(公告)号：US08023839B2

公开(公告)日：2011-09-20

申请号：US12395906

申请日：2009-03-02

Applicant: Kazuomi Sakatani ,  Katsuyuki Hirata ,  Mitsuru Obara ,  Yoshinori Tsutsumi

Inventor： Kazuomi Sakatani ,  Katsuyuki Hirata ,  Mitsuru Obara ,  Yoshinori Tsutsumi

IPC: G03G15/08

CPC classification number: G03G15/0868 ,  G03G15/0853 ,  G03G15/0856 ,  G03G15/0887 ,  G03G15/0893

Abstract: The developing apparatus, having stirring members for conveying and stirring developer-tank-contained developer and a developer holder, comprises a developer replenishing tank; a toner concentration detecting sensor; a trickle-type discharging mechanism; a developer amount estimating sensor; and a controller for controlling replenishment operation for replenishing the toner and the carrier for replenishment to the developer tank when the toner concentration is lower than a predetermined reference toner concentration, wherein the controller determines the amounts of the toner and the carrier to be replenished on the basis of the calculated toner concentration and the estimated amount of the developer.

Abstract translation: 具有用于输送和搅拌含显影剂罐的显影剂和显影剂载体的搅拌构件的显影装置包括显影剂补充槽; 调色剂浓度检测传感器; 涓流式排放机构; 显影剂量估计传感器; 以及控制器，用于当调色剂浓度低于预定的参考调色剂浓度时，控制用于补充调色剂和载体以补充显影剂罐的补充操作，其中控制器确定调色剂和待补充的载体的量 计算出的调色剂浓度的基础和显影剂的估计量。

公开(公告)号：US07840148B2

公开(公告)日：2010-11-23

申请号：US11704242

申请日：2007-02-09

Applicant: Masaki Tanaka ,  Katsuyuki Hirata ,  Mitsuru Obara ,  Toshio Tsuboi ,  Tatsuya Isono

Inventor： Masaki Tanaka ,  Katsuyuki Hirata ,  Mitsuru Obara ,  Toshio Tsuboi ,  Tatsuya Isono

IPC: G03G15/16

CPC classification number: G03G15/168 ,  G03G15/0194 ,  G03G2215/1614

Abstract: An image forming apparatus includes a secondary transfer roller that becomes a pressed state to make an intermediate transfer belt perform a transfer process and can move between the pressed state and a separated state, a press and separation driving device for driving the secondary transfer roller to become the pressed state and the separated state, a press and separation detecting device for detecting a pressed or separated state, and a voltage applying portion for applying a voltage between the intermediate transfer belt and the secondary transfer roller. The press and separation detecting device includes a resistor for detecting a current and a determination portion for determining a pressed or separated state in accordance with the detected current.

Abstract translation: 图像形成装置包括：二次转印辊，其成为压制状态，以使中间转印带进行转印处理并且能够在压制状态和分离状态之间移动，用于驱动二次转印辊的压力分离驱动装置成为 按压状态和分离状态，用于检测压制或分离状态的按压分离检测装置，以及用于在中间转印带和二次转印辊之间施加电压的电压施加部。 按压分离检测装置包括用于检测电流的电阻器和用于根据检测到的电流确定按压或分离状态的确定部件。

公开(公告)号：US20060029404A1

公开(公告)日：2006-02-09

申请号：US10976774

申请日：2004-11-01

Applicant: Soh Hirota ,  Masaki Tanaka ,  Masahiro Kouzaki ,  Kazuomi Sakatani ,  Mitsuru Obara

Inventor： Soh Hirota ,  Masaki Tanaka ,  Masahiro Kouzaki ,  Kazuomi Sakatani ,  Mitsuru Obara

IPC: G03G15/08

CPC classification number: G03G15/0856 ,  G03G15/086 ,  G03G15/0877

Abstract: An electrophotographic image forming apparatus includes a developing device including a developer reservoir for accommodating a mixed developer. The mixed developer includes a plurality of types of toner having a generally identical hue and different reflection densities. The apparatus also includes a replenishment device having a plurality of toner containers each accommodating one of the plurality of types of toner for replenishing the plurality of types of toner to the developer reservoir; a first detector for detecting whether each of the toner containers is completely empty of toner; and a second detector for detecting whether the developer reservoir is nearly or completely empty of mixed developer. A controller controls the replenishment device and allows or prohibits a printing operation based on the detection result of the first and the second detectors.

Abstract translation: 电子照相图像形成装置包括显影装置，显影装置包括用于容纳混合显影剂的显影剂储存器。 混合显影剂包括具有大致相同的色调和不同反射浓度的多种类型的调色剂。 该装置还包括具有多个调色剂容器的补充装置，每个调色剂容器各自容纳多种类型的调色剂中的一种，用于将多种类型的调色剂补充到显影剂储存器; 用于检测每个调色剂容器是否完全没有调色剂的第一检测器; 以及用于检测显影剂储存器是否几乎或完全没有混合显影剂的第二检测器。 控制器控制补充装置，并且允许或禁止基于第一和第二检测器的检测结果的打印操作。