公开(公告)号：US06276772B1

公开(公告)日：2001-08-21

申请号：US09323228

申请日：1999-06-01

申请人： Masatoshi Sakata ,  Keiji Kunimi ,  Takashi Sekino ,  Kazuo Shimizu

发明人： Masatoshi Sakata ,  Keiji Kunimi ,  Takashi Sekino ,  Kazuo Shimizu

IPC分类号： B41J2938

CPC分类号： B41J2/04506 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588

摘要： A piezoelectric type ink recording device has piezoelectric elements for ejecting ink droplets. Variation can exist in characteristics of the piezoelectric elements that results in variation in speed at which the piezoelectric elements eject ink droplets. In order to suppress this variation in ejection speed, the ink recording device has a driver shared by all of the piezoelectric elements and a separate discharge control circuit for each piezoelectric element. The driver shared and the separate discharge control circuits output pulses to the piezoelectric elements in synchronization. Each piezoelectric element starts discharging its charge in synchronization with the falling edge of a drive pulse from the driver. As a result, the piezoelectric elements deform during the falling edge of the drive pulse to increase volume of corresponding ink chambers, thereby drawing ink into the ink chambers. However, each piezoelectric element continues discharging for a time determined by the width of the pulse from the corresponding discharge control circuit. In this way, the amount of charge discharged from each piezoelectric element can be individually regulated by changing the pulse waveform applied to each piezoelectric element by the corresponding discharge control circuit.

摘要翻译： 压电型油墨记录装置具有用于喷射墨滴的压电元件。 在压电元件的特性中可能存在变化，导致压电元件喷射墨滴的速度变化。 为了抑制喷墨速度的变化，墨水记录装置具有由所有压电元件共享的驱动器和用于每个压电元件的单独的放电控制电路。 驱动器共享，并且单独的放电控制电路同步地向压电元件输出脉冲。 每个压电元件与驱动器的驱动脉冲的下降沿同步开始放电。 结果，压电元件在驱动脉冲的下降沿期间变形，从而增加相应的墨水室的体积，从而将墨水吸入墨水室。 然而，每个压电元件继续放电一个由相应的放电控制电路的脉冲宽度确定的时间。 以这种方式，可以通过改变由相应的放电控制电路施加到每个压电元件的脉冲波形来分别调节从每个压电元件放电的电荷量。

公开(公告)号：US10725420B2

公开(公告)日：2020-07-28

申请号：US16226788

申请日：2018-12-20

申请人： Masato Tanaka ,  Keiji Kunimi ,  Masaki Yoshino ,  Kazumi Suzuki

发明人： Masato Tanaka ,  Keiji Kunimi ,  Masaki Yoshino ,  Kazumi Suzuki

IPC分类号： G03G15/00 ,  G03B21/04 ,  G03G21/04 ,  H04N1/60

摘要： An image forming apparatus including an image forming unit, a fixing device, and circuitry is provided. The image forming unit is configured to perform a special image forming operation that forms a color toner image and a special toner image with a color toner and a special toner, respectively, on a recording medium and a normal image forming operation that forms the color toner image without forming the special toner image on the recording medium. The fixing device is configured to fix the color toner image and the special toner image on the recording medium. The circuitry is configured to perform, in the special image forming operation, a toner amount suppression control that makes an amount of the color toner on the recording medium per unit area smaller than that in the normal image forming operation.

公开(公告)号：US10990028B2

公开(公告)日：2021-04-27

申请号：US16802673

申请日：2020-02-27

申请人： Yuka Kanatani ,  Keiji Kunimi

发明人： Yuka Kanatani ,  Keiji Kunimi

IPC分类号： G06F15/00 ,  G06F3/12 ,  G06K1/00 ,  G03G9/12 ,  G03G9/09 ,  G03G15/00

摘要： An information processing apparatus includes circuitry to control a display to display a setting screen for a background pattern that allows a user to designate a special consumable material as a color to be used for information specified as the background pattern; generate print data using the designated special consumable material; and transmit the print data to an image forming apparatus.

公开(公告)号：US20200081669A1

公开(公告)日：2020-03-12

申请号：US16549102

申请日：2019-08-23

申请人： Keiji Kunimi ,  Masato Tanaka ,  Hiroki Matsuura

发明人： Keiji Kunimi ,  Masato Tanaka ,  Hiroki Matsuura

IPC分类号： G06F3/12

摘要： A machine-readable, non-transitory recording medium, an image forming apparatus, and an information processing apparatus. The machine-readable, non-transitory recording medium stores instructions that, when executed, cause the information processing apparatus to display a special color settings screen for setting an RGB value of drawing data to be printed in a special color included in print data to be transmitted to an image forming apparatus, generate the print data instructing printing of the RGB value set on the special color settings screen in the special color, and transmit the generated print data to the image forming apparatus.

公开(公告)号：US20190196382A1

公开(公告)日：2019-06-27

申请号：US16217665

申请日：2018-12-12

申请人： Masato Tanaka ,  Keiji Kunimi

发明人： Masato Tanaka ,  Keiji Kunimi

IPC分类号： G03G15/00 ,  G03G15/01

摘要： An image forming apparatus is provided. The image forming apparatus includes an image forming unit containing a special recording material and circuitry configured to control the image forming unit to form a hardly visible image on a recording medium with the special recording material. The hardly visible image is formed of a halftone dot image comprising isolated dots in a number smaller than that of isolated dots forming a visible image having the same image area ratio as the hardly visible image.

公开(公告)号：US11460788B2

公开(公告)日：2022-10-04

申请号：US17407209

申请日：2021-08-20

申请人： Yasuhide Matsuno ,  Keiji Kunimi

发明人： Yasuhide Matsuno ,  Keiji Kunimi

IPC分类号： G03G15/01 ,  G06F3/12 ,  G03G15/08

摘要： An image forming apparatus includes an image forming device and circuitry. The image forming device forms an image with colorants of different colors. The circuitry determines whether there is a possibility that a shortage of a colorant adhesion amount occurs in primary-color image formation using a colorant of a primary color and cause the image forming device to perform two-color image formation in which only secondary-color image formation using a colorant of a secondary color different from the colorant of the primary color is added to the primary-color image formation using the colorant of the primary color to form an image to be formed with the colorant of the primary color, when the circuitry determines that there is a possibility that the shortage of the colorant adhesion amount occurs in the primary-color image formation using the colorant of the primary color.

公开(公告)号：US11039039B2

公开(公告)日：2021-06-15

申请号：US16844232

申请日：2020-04-09

申请人： Keiji Kunimi ,  Yutaka Ataku ,  Noboru Tamura ,  Ryo Kobayashi ,  Hiroki Matsuura ,  Yoshio Taga ,  Kaname Nomura

发明人： Keiji Kunimi ,  Yutaka Ataku ,  Noboru Tamura ,  Ryo Kobayashi ,  Hiroki Matsuura ,  Yoshio Taga ,  Kaname Nomura

IPC分类号： H04N1/60 ,  H04N1/54 ,  H04N1/00 ,  B41J2/21 ,  G03G15/00

摘要： There is provided an image forming apparatus for performing printing in a plurality of colors. The image forming apparatus includes processing circuitry. The processing circuitry is configured to receive first print data in which an object to be printed in a spot color is designated in a first area in a document to be printed and second print data of the document to be printed from an information processing apparatus; convert the second print data received by the communication unit into image data of a predetermined color; extract an image of the first area from the image data obtained by conversion of the drawing unit; convert the image of the first area extracted by the spot color image control unit into the spot color; and generate image data of the spot color in which the image of the first area converted by the conversion unit is placed.

公开(公告)号：US11003124B2

公开(公告)日：2021-05-11

申请号：US16903734

申请日：2020-06-17

申请人： Masato Tanaka ,  Keiji Kunimi ,  Masaki Yoshino ,  Kazumi Suzuki

发明人： Masato Tanaka ,  Keiji Kunimi ,  Masaki Yoshino ,  Kazumi Suzuki

IPC分类号： G03G15/00 ,  G03G15/20 ,  G03G21/04

摘要： An image forming apparatus including an image forming unit, a fixing device, and circuitry is provided. The image forming unit is configured to perform a special image forming operation that forms a color toner image and a special toner image with a color toner and a special toner, respectively, on a recording medium and a normal image forming operation that forms the color toner image without forming the special toner image on the recording medium. The fixing device is configured to fix the color toner image and the special toner image on the recording medium. The circuitry is configured to perform, in the special image forming operation, a toner amount suppression control that makes an amount of the color toner on the recording medium per unit area smaller than that in the normal image forming operation.

公开(公告)号：US09164435B2

公开(公告)日：2015-10-20

申请号：US14084127

申请日：2013-11-19

申请人： Tomoya Adachi ,  Atsushi Takehara ,  Tomohiko Fujii ,  Yutaka Naitoh ,  Minoru Toyoda ,  Hitoshi Fujiwara ,  Yasuharu Kawarasaki ,  Naoki Nakatake ,  Keiji Kunimi ,  Takahiro Sanada ,  Yasuhide Matsuno ,  Rumi Miyazaki ,  Kyoko Abe ,  Takeshi Yamashita ,  Yasuhiro Fujiwara

发明人： Tomoya Adachi ,  Atsushi Takehara ,  Tomohiko Fujii ,  Yutaka Naitoh ,  Minoru Toyoda ,  Hitoshi Fujiwara ,  Yasuharu Kawarasaki ,  Naoki Nakatake ,  Keiji Kunimi ,  Takahiro Sanada ,  Yasuhide Matsuno ,  Rumi Miyazaki ,  Kyoko Abe ,  Takeshi Yamashita ,  Yasuhiro Fujiwara

IPC分类号： G03G15/20

CPC分类号： G03G15/2028 ,  G03G15/2064 ,  G03G2215/2035 ,  G03G2215/2061

摘要： A fixing device includes a nip formation pad disposed opposite an inner circumferential surface of an endless belt and a pressing rotary body pressed against the nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressing rotary body, through which a recording medium is conveyed. The pressing rotary body has a diameter increasing from a center to each lateral end in an axial direction thereof. The nip formation pad includes a projection disposed downstream from a rotation axis of the pressing rotary body in a recording medium conveyance direction. The projection projects toward the pressing rotary body in an amount increasing from each lateral end to a center in a longitudinal direction of the nip formation pad parallel to the axial direction of the pressing rotary body.

摘要翻译： 定影装置包括与环形带的内圆周表面相对设置的压区形成垫，以及通过环形带压靠压区形成垫的压制旋转体，以在环形带和压制旋转体之间形成定影辊隙， 传送记录介质。 按压旋转体的直径从轴心方向的中心向各侧端增大。 压区形成垫包括在记录介质传送方向上设置在按压旋转体的旋转轴线的下游的突起。 突起朝向按压旋转体突出地以与挤压旋转体的轴向方向平行的压区形成垫的纵向方向上的每个横向端部至中心的量增加。

公开(公告)号：US5173950A

公开(公告)日：1992-12-22

申请号：US696019

申请日：1991-05-06

申请人： Tatunari Sato ,  Yukio Yamamoto ,  Keiji Kunimi

发明人： Tatunari Sato ,  Yukio Yamamoto ,  Keiji Kunimi

IPC分类号： B41J2/325 ,  B41J2/36 ,  H04N1/52

CPC分类号： H04N1/52

摘要： In transferring color image data having a tone on a recording paper, a threshold matrix data for adjusting the tone is selected in accordance with the image data having a dot arrangement. The threshold conversion curve of the threshold matrix data selected is used to correct a variation in the tone of the image data due to mechanical and electrical variations in a color image transferring apparatus including variations in the rotation speed of a transferring drum, a power source voltage to be applied to a transferring head and a relative position between the transferring drum and the recording paper. This correction can achieve improved transference of the image data on the recording paper.

摘要翻译： 在将具有音调的彩色图像数据传送到记录纸上时，根据具有点排列的图像数据来选择用于调整色调的阈值矩阵数据。 所选择的阈值矩阵数据的阈值转换曲线用于校正由于彩色图像传送装置中的机械和电气变化引起的图像数据的色调变化，包括转印鼓的转速变动，电源电压 适用于转印头和转印鼓与记录纸之间的相对位置。 该校正可以改善记录纸上的图像数据的改进。