公开(公告)号：US06417876B1

公开(公告)日：2002-07-09

申请号：US09590639

申请日：2000-06-08

申请人： Yoshinori Nakajima ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Mutou

发明人： Yoshinori Nakajima ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Mutou

IPC分类号： G03G1500

CPC分类号： H04N1/40037

摘要： A control unit of an image forming apparatus for controlling exposure energy includes a reference image storage unit storing a plurality of reference images, an image recognition unit comparing image information consisting of a plurality of pieces of pixel information with data stored in the reference image storage unit, an exposure energy density storage unit storing an exposure energy density for each reference image stored in the reference image storage unit, an exposure energy density determination unit based on data from the image recognition unit and data in the exposure energy density storage unit an exposure energy density to be applied to a dot position corresponding to each piece of the pixel information, and a laser drive driving a laser of an exposure unit based on data from the exposure energy density determination uni. Accordingly, the image forming apparatus can be provided which exhibits an excellent image reproducibility for images with various dot densities.

摘要翻译： 用于控制曝光能量的图像形成装置的控制单元包括存储多个参考图像的参考图像存储单元，图像识别单元将由多个像素信息组成的图像信息与存储在参考图像存储单元中的数据进行比较 曝光能量密度存储单元，其存储参考图像存储单元中存储的每个参考图像的曝光能量密度;基于来自图像识别单元的数据和曝光能量密度存储单元中的数据的曝光能量密度确定单元，曝光能量 密度被施加到与每个像素信息相对应的点位置，以及激光驱动器，其基于来自曝光能量密度确定单元的数据驱动曝光单元的激光。 因此，可以提供对于具有各种点密度的图像具有优异的图像再现性的图像形成装置。

公开(公告)号：US06433803B1

公开(公告)日：2002-08-13

申请号：US09826199

申请日：2001-04-04

申请人： Yoshinori Mutou ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Nakajima

发明人： Yoshinori Mutou ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Nakajima

IPC分类号： B41J2385

摘要： An exposure apparatus for image formation uses power control means provided to a laser driver for controlling exposure energy and accordingly forming an image. Specifically, exposure energy is varied depending on an isolated-dot pattern and an isolated-line pattern by changing the pulse height (drive power) of a drive pulse for each dot. Both of the isolated-line and isolated-dot patterns of a high resolution can thus be reproduced with a high image quality without increase of cost due to requirements for accuracy in processing and positioning of a lens and without decrease of life of a photoreceptor due to a decreased thickness of its photosensitive layer.

公开(公告)号：US06714225B2

公开(公告)日：2004-03-30

申请号：US10213427

申请日：2002-08-06

申请人： Yoshinori Mutou ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Nakajima

发明人： Yoshinori Mutou ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Nakajima

IPC分类号： B04J2385

CPC分类号： H04N1/4055

摘要： When a halftone image region that is below a predetermined density is to be reproduced, a processing unit controlling an exposure unit selects an exposure pattern that can represent a record dot diameter within a range based on a predetermined rule from exposure patterns prepared in advance. Accordingly, graininess is suppressed. When there are a plurality of exposure patterns that can be applied, the exposure pattern with the lowest number of dots present per 1 inch is employed. Accordingly, a halftone image is formed with the image reproducibility improved.

摘要翻译： 当要再现低于预定浓度的半色调图像区域时，控制曝光单元的处理单元基于预先规定的曝光图案，基于预定规则从一个范围内选择可以表示记录点直径的曝光图案。 因此，抑制了颗粒性。 当存在可以应用的多个曝光图案时，采用每1英寸存在最少点数的曝光图案。 因此，形成具有提高图像再现性的半色调图像。

公开(公告)号：US06239824B1

公开(公告)日：2001-05-29

申请号：US09591607

申请日：2000-06-09

申请人： Yoshinori Mutou ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Nakajima

发明人： Yoshinori Mutou ,  Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Nakajima

IPC分类号： G03G1504

CPC分类号： H04N1/40037

摘要： An exposure energy control unit of an image forming apparatus controls exposure energy density Edot (&mgr;J/cm2) to be applied to an isolated one-dot pattern of image information to satisfy a relation −0.11P+6.4≦Edot/Eline≦−0.2P+10.7 where Eline (&mgr;J/cm2) represents exposure energy density applied to a line pattern of the image information having lines on every second lines and P (&mgr;m) represents dot pitch. Accordingly, image reproducibility of both of a periodic line pattern and an isolated dot pattern can be enhanced without decreasing the film thickness of a photoreceptor even if the resolution is high.

摘要翻译： 图像形成装置的曝光能量控制单元控制曝光能量密度Edot（μJ/ cm 2），以应用于孤立的单点图案的图像信息，以满足其中Eline（μJ/ cm 2）表示施加到 在第二行上具有线的图像信息的线图案和P（母）表示点间距。 因此，即使分辨率高，也可以在不降低感光体的膜厚的情况下增强周期性线图案和孤立点图案的图像再现性。

公开(公告)号：US06323888B1

公开(公告)日：2001-11-27

申请号：US09642131

申请日：2000-08-18

申请人： Tadashi Iwamatsu ,  Tetsuro Toyoshima ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

发明人： Tadashi Iwamatsu ,  Tetsuro Toyoshima ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

IPC分类号： B41J2385

CPC分类号： G03G15/326 ,  G03G15/04072 ,  H04N1/29

摘要： An image forming apparatus has the following characteristics: the diameter of an exposure beam for exposing a latent image is not more than twice a minimum dot recording period p in peak intensity 1/e2, and the value of a spatial frequency characteristic function of a latent image defined by the thickness of a photoreceptor layer, the dielectric constant of the photoreceptor layer, the thickness of a developer layer, the dielectric constant of the developer layer and a spatial frequency &ohgr; defined as &ohgr;=&pgr;/p is at least 0.3. The image forming apparatus having such characteristics can reproduce an image of high resolution exceeding 600 to 1200 DPI with high fidelity.

摘要翻译： 图像形成装置具有以下特征：用于曝光潜像的曝光光束的直径不大于峰值强度1 / e2的最小点记录周期p的两倍，并且潜在的空间频率特征函数的值 由感光体层的厚度，感光体层的介电常数，显影剂层的厚度，显影剂层的介电常数和定义为Ω= pi / p的空间频率Ω定义的图像为至少0.3。 具有这种特征的图像形成装置可以以高保真度再现超过600至1200DPI的高分辨率图像。

公开(公告)号：US06298206B1

公开(公告)日：2001-10-02

申请号：US09506304

申请日：2000-02-17

申请人： Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

发明人： Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

IPC分类号： G03G1508

CPC分类号： G03G15/344 ,  G03G15/0806 ,  G03G15/0812 ,  G03G2215/0614 ,  G03G2215/0634

摘要： It is an object of the invention that development quality is improved by increasing the amount of charge during the transportation of toner by a toner holding member and decreasing the amount of charge during development for rendering an electrostatic latent image visible. A one-component non-magnetic toner is supplied from a toner supplying unit to the toner holding member such that the toner is electrostatically attracted to adhere to the toner holding member with a large amount of charge. The charge of the toner under transportation is reduced by charge adjusting means such as a conductive roller supplied with a potential from a frictional charging member or a voltage source, whereby the amount of development or the amount of toner adhering to an electrostatic latent image is increased and development quality is improved.

摘要翻译： 本发明的一个目的是通过在调色剂保持部件输送调色剂期间增加电荷量并减少显影期间的电荷量，使静电潜像变得可见，从而提高显影质量。 单色非磁性调色剂从调色剂供应单元供应到调色剂保持构件，使得调色剂被静电吸引以以大量的电荷附着到调色剂保持构件。 运输中的调色剂的电荷通过诸如由摩擦充电部件或电压源提供电位的导电辊等电荷调节装置而减少，由此显影量或与静电潜像粘附的调色剂量增加 开发质量提高。

公开(公告)号：US20120019582A1

公开(公告)日：2012-01-26

申请号：US13177109

申请日：2011-07-06

申请人： Yoshinori Nakajima ,  Tatsuya Fukushima ,  Yasunori Fujimoto ,  Takeshi Honma

发明人： Yoshinori Nakajima ,  Tatsuya Fukushima ,  Yasunori Fujimoto ,  Takeshi Honma

IPC分类号： B41J2/205

CPC分类号： B41J19/142 ,  B41J2/2132

摘要： A sharp image is formed without variation in ink spreading around an outer periphery of a print-required region depending on a printing direction. At the time of printing an image by scanning a print medium with a print head for ejecting a first ink which is visible as black and has relatively high permeation properties of penetrating the print medium and a second ink having relatively low permeation properties, a printing apparatus uses the second ink to print on at least an edge area of the print-required region of the print medium, and the first ink to print on a non-edge area surrounded by the edge area. The print head comprises a first nozzle array ejecting the first ink and second nozzle arrays ejecting the second ink. The second nozzle arrays are arranged on opposite sides of the first nozzle array in the scan direction.

摘要翻译： 形成清晰的图像，而不会根据打印方向在打印所需区域的外周附近扩散墨的变化。 在通过用打印头扫描打印介质来打印图像时，用于喷射可见为黑色的第一墨水并且具有相对较高的穿透打印介质的渗透性能和具有相对较低渗透性能的第二墨水，打印设备 使用第二墨水在打印介质的打印所需区域的至少边缘区域上打印，并且第一墨水在由边缘区域包围的非边缘区域上打印。 打印头包括喷射第一墨水的第一喷嘴阵列和喷射第二墨水的第二喷嘴阵列。 第二喷嘴阵列沿扫描方向布置在第一喷嘴阵列的相对侧上。

公开(公告)号：US20100309240A1

公开(公告)日：2010-12-09

申请号：US12794574

申请日：2010-06-04

申请人： Akihiro Tomida ,  Yoshinori Nakajima

发明人： Akihiro Tomida ,  Yoshinori Nakajima

IPC分类号： B41J29/38

CPC分类号： B41J2/2135 ,  B41J11/008 ,  B41J29/38 ,  B41J29/393

摘要： An apparatus records a first pattern used for correcting a shift in positions recorded by a plurality of nozzle arrays and a second pattern used for detecting a conveyance error that occurs when the first pattern is recorded, and changes a correction value according to the detected conveyance error.

摘要翻译： 一种装置记录用于校正由多个喷嘴阵列记录的位置的偏移的第一图案和用于检测在记录第一图案时发生的输送错误的第二图案，并且根据检测到的输送误差来改变校正值 。

公开(公告)号：US07812349B2

公开(公告)日：2010-10-12

申请号：US12425459

申请日：2009-04-17

申请人： Osamu Yuki ,  Yoshinori Nakajima ,  Shigeki Kondo

发明人： Osamu Yuki ,  Yoshinori Nakajima ,  Shigeki Kondo

IPC分类号： H01L29/04

CPC分类号： G09G3/3241 ,  G09G2300/0861 ,  G09G2330/028

摘要： An image display apparatus includes a display unit and a voltage source, with the display unit having display devices and pixel circuits. Each of the pixel circuits is provided with a drive transistor which has a first primary electrode connected to one terminal of each of the display devices, a second primary electrode connected to a first common electrode, and a control electrode for controlling by an electric potential the magnitude of a drive current supplied to the display devices. In addition, and a control transistor has a source electrode and a drain electrode connected to the control electrode and the first primary electrode, respectively, and a gate electrode to which a signal switching between an on-state and an off-state is supplied, with an electric potential of the control electrode being set up at the on-state. The voltage source can adjust a voltage applied between the first common electrode and a second common electrode with another terminal of the display device being connected thereto.

摘要翻译： 图像显示装置包括显示单元和电压源，显示单元具有显示装置和像素电路。 每个像素电路设置有驱动晶体管，其具有连接到每个显示装置的一个端子的第一主电极，连接到第一公共电极的第二主电极和用于通过电位控制的控制电极 提供给显示装置的驱动电流的大小。 此外，并且控制晶体管分别具有连接到控制电极和第一主电极的源电极和漏电极以及提供在导通状态和截止状态之间的信号切换到的栅电极， 控制电极的电位被设定为导通状态。 电压源可以调节施加在第一公共电极和第二公共电极之间的电压，其中显示装置的另一个端子与其连接。

公开(公告)号：US07585059B2

公开(公告)日：2009-09-08

申请号：US11667811

申请日：2005-11-16

申请人： Tomoyuki Sagara ,  Yoshinori Nakajima

发明人： Tomoyuki Sagara ,  Yoshinori Nakajima

IPC分类号： B41J2/045

CPC分类号： B41J2/1634 ,  B41J2/14209 ,  B41J2/1609 ,  B41J2/1623 ,  B41J2/1632 ,  B41J2/1635 ,  B41J2/1643 ,  B41J2/1646 ,  Y10T29/49401

摘要： An ink jet head is provided which includes: a piezoelectric board having a plurality of elongated channels arranged parallel to each other and isolated from each other by channel walls; and a nozzle plate having a plurality of nozzle holes provided in association with the respective channels, and bonded onto the piezoelectric board with the nozzle holes located at generally longitudinally middle positions of the respective channels; wherein the nozzle plate has trench-like recesses each having a predetermined width and a predetermined depth and extending perpendicularly to the channels as being spaced equidistantly from the nozzle holes longitudinally of the channels; gaps for communication between adjacent channels are defined by the recesses between a surface of the nozzle plate and upper face portions of the channel walls located equidistantly from the nozzle holes; and active areas contributable to ink ejection are defined in each of the channels on opposite sides of the corresponding nozzle hole along the channel. This arrangement prevents deterioration of ejection characteristics attributable to bonding offset of the nozzle plate, and suppresses residual vibration occurring due to pressure waves without complication of the construction of the ink jet head, thereby ensuring stable ejection characteristics even in high speed driving.

摘要翻译： 提供了一种喷墨头，其包括：压电板，其具有彼此平行布置并通过通道壁彼此隔离的多个细长通道; 以及喷嘴板，其具有与各个通道相关联地设置的多个喷嘴孔，并且与各个通道的大致纵向中间位置处的喷嘴孔接合到压电板上; 其中所述喷嘴板具有各自具有预定宽度和预定深度并且与所述通道垂直延伸的沟槽状凹部，其与所述通道的纵向方向上的喷嘴孔等距离地间隔开; 相邻通道之间的连通间隙由喷嘴板的表面与等距离喷嘴孔的通道壁的上表面部分之间的凹槽限定; 并且在沿着通道的相应喷嘴孔的相对侧上的每个通道中限定了有助于喷墨的有效区域。 这样可以防止由于喷嘴板的粘合偏移引起的喷射特性的劣化，并且抑制由于压力波而产生的残余振动，而不会使喷墨头的结构复杂化，从而即使在高速驱动中也能确保稳定的喷射特性。