公开(公告)号：US11681252B2

公开(公告)日：2023-06-20

申请号：US17750832

申请日：2022-05-23

Applicant: CANON KABUSHIKI KAISHA

Inventor： Isami Itoh

IPC: G03G15/00

CPC classification number: G03G15/5062 ,  G03G15/5016 ,  G03G2215/00063 ,  G03G2215/047

Abstract: An image forming apparatus includes an image processor configured to perform image processing on image data based on a conversion condition to output converted image data; an image forming unit configured to form an image based on the converted image data output from the image processor, the image forming unit being controlled based on an image forming condition; and a controller configured to perform tone correction control, density evenness control, and total density control, which is a combination of the tone correction control and the density evenness control. In the tone correction control, the controller controls the image forming unit to form a test image on a sheet and obtains reading data related to the test image on the sheet.

公开(公告)号：US20170248889A1

公开(公告)日：2017-08-31

申请号：US15436598

申请日：2017-02-17

Applicant: Yuuichiroh Uematsu ,  Natsumi Matsue ,  Akira Yoshida ,  Akio Kosuge ,  Keiko Matsumoto

Inventor： Yuuichiroh Uematsu ,  Natsumi Matsue ,  Akira Yoshida ,  Akio Kosuge ,  Keiko Matsumoto

IPC: G03G15/00

CPC classification number: G03G15/5062 ,  G03G15/5058 ,  G03G2215/00042 ,  G03G2215/00063

Abstract: An image density detector for detecting image density of an image borne by an image bearer includes a reference board, a light emitter, a light receiver, an image density calculator, and an image density detecting condition corrector. The reference board has a spectral reflectance distribution closer to a spectral reflectance distribution of the image forming material than a spectral reflectance distribution of white. The light emitter emits light to the reference board and the image borne by the image bearer. The light receiver receives the light reflected from the image and the reference board. The image density calculator calculates the image density of the image based on an output of the light receiver receiving the light reflected from the image. The image density detecting condition corrector corrects an image density detecting condition based on an output of the light receiver receiving the light reflected from the reference board.

公开(公告)号：US09146513B2

公开(公告)日：2015-09-29

申请号：US11746855

申请日：2007-05-10

Applicant: Kimimori Eguchi

Inventor： Kimimori Eguchi

IPC: G06F15/00 ,  G03G15/00

CPC classification number: G03G15/50 ,  G03G2215/00029 ,  G03G2215/00063

Abstract: An image forming apparatus comprises an operation unit which performs an operation for calculating amount data of a printing material which indicates an amount of a printing material required to form the image, a reduction processing unit which changes, when it is determined that the amount of a printing material needs to be reduced, the amount data of the printing material to a value corresponding to the reduced amount of the printing material, an inverse operation unit which perform an inverse operation of the operation for the amount data of the printing material, after processing by the reduction processing unit, and an image forming unit configured to form an image on the basis of amount data of a printing material for which an inverse operation is performed.

Abstract translation: 图像形成装置包括操作单元，该操作单元执行用于计算指示形成图像所需的打印材料的量的打印材料的数据量的操作;缩小处理单元，当确定 需要减少打印材料，将打印材料的数据量减少到对应于打印材料量减少的值，在处理之后进行打印材料的数据量的操作的反向操作的反向操作单元 以及图像形成单元，被配置为基于执行反向操作的打印材料的量数据形成图像。

公开(公告)号：US09092719B2

公开(公告)日：2015-07-28

申请号：US14080508

申请日：2013-11-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Asako Hashizume

IPC: H04N1/60 ,  G06K15/02 ,  G03G15/00 ,  H04N1/00

CPC classification number: G06K15/1878 ,  G03G15/5041 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/00067 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00034 ,  H04N1/00045 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/60 ,  H04N1/6033 ,  H04N1/6036 ,  H04N1/6038 ,  H04N1/6044 ,  H04N2201/0094

Abstract: A color image processing apparatus includes an image forming unit configured to form a color image using recording materials of plural colors, an image processing unit configured to implement plural image processing methods that achieve plural types of pseudo-halftone representations, a color measurement unit configured to perform color measurement of the color image formed by the image forming unit, and a control unit configured to control execution of multi-color calibration in which the color measurement unit performs color measurement of a pattern image including plural multi-color patch images formed using recording materials of plural colors by using a smaller number of image processing methods than plural image processing methods used in single-color calibration for correcting reproduction characteristics of single-color images formed by the image forming unit and in which reproduction characteristics of a multi-color image formed by the image forming unit are corrected using a result of the color measurement.

Abstract translation: 彩色图像处理装置包括：图像形成单元，被配置为使用多种颜色的记录材料形成彩色图像;图像处理单元，被配置为实现实现多种类型的伪半色调表示的多种图像处理方法;颜色测量单元，被配置为 执行由图像形成单元形成的彩色图像的颜色测量;以及控制单元，被配置为控制多色校准的执行，其中颜色测量单元执行包括使用记录形成的多个多色块图像的图案图像的颜色测量 通过使用比用于校正由图像形成单元形成的单色图像的再现特性的单色校准中使用的多个图像处理方法的多个图像处理方法的多种颜色的材料，并且其中多色图像的再现特性 使用a来校正由图像形成单元形成的图像形成单元 颜色测量结果。

公开(公告)号：US20140348521A1

公开(公告)日：2014-11-27

申请号：US14275038

申请日：2014-05-12

Applicant: Ryusuke MASE ,  Taichi URAYAMA ,  Tomoko TAKAHASHI ,  Shotaro HOSHI ,  Ryuji YOSHIDA ,  Hiroyuki SUGIYAMA ,  Masahiko SHAKUTO ,  Hideki ZEMBA ,  Takamasa OZEKI ,  Yoshinori NAKAGAWA

Inventor： Ryusuke MASE ,  Taichi URAYAMA ,  Tomoko TAKAHASHI ,  Shotaro HOSHI ,  Ryuji YOSHIDA ,  Hiroyuki SUGIYAMA ,  Masahiko SHAKUTO ,  Hideki ZEMBA ,  Takamasa OZEKI ,  Yoshinori NAKAGAWA

IPC: G03G15/00 ,  G03G15/06 ,  G03G15/02

CPC classification number: G03G15/5041 ,  G03G15/0848 ,  G03G15/5058 ,  G03G15/55 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063

Abstract: An image forming apparatus includes a latent image carrier, a charging device, a latent image forming device, a developing device, a transfer device, a toner amount detector, and a control circuit to execute an imaging condition determination process. The control circuit obtains a linear approximation formula of a developing potential and an amount of toner according to an exposure potential of the patch pattern and a detected amount of toner to calculate a developing gamma and a developing start voltage according to a gradient of the linear approximation formula, determines target charging potential, exposure potential and developing bias according to the developing gamma and the developing start voltage, determines an amount of a background potential to be corrected according to a difference between the developing start voltage and a target developing start voltage obtained according to environmental information, and corrects the target charging potential.

Abstract translation: 图像形成装置包括潜像载体，充电装置，潜像形成装置，显影装置，转印装置，调色剂量检测器和控制电路，以执行成像条件确定处理。 控制电路根据该贴片图案的曝光电位和检测量的调色剂获得显影电位和调色剂量的线性近似公式，以根据线性近似的梯度来计算显影伽马和显影起始电压 根据显影伽马和显影开始电压确定目标充电电位，曝光电位和显影偏压，根据显影开始电压和目标显影开始电压之间的差确定待校正的背景电位的量，根据 对环境信息，并纠正目标充电潜力。

公开(公告)号：US08582180B2

公开(公告)日：2013-11-12

申请号：US12394274

申请日：2009-02-27

Applicant: Hiroshi Miura

Inventor： Hiroshi Miura

IPC: H04N1/407

CPC classification number: G03G15/5058 ,  G03G15/0194 ,  G03G2215/00059 ,  G03G2215/00063

Abstract: An image forming apparatus having an image forming unit forming a gradation image includes density detection, gradation correction, and mechanism control units. The density detection unit detects gradation image density. The gradation correction control unit controls a change of gradation characteristic. The mechanism control unit controls the image forming unit and a change of image density, and includes density difference calculation and comparison judging units. The density difference calculation unit calculates density difference between target image density and the image density. The comparison judging unit compares the density difference with reference value and judges the image density to change and the gradation correction unit to operate where the density difference exceeds the reference value, or judges the gradation correction unit to operate where the density difference is below the reference value. The mechanism control unit controls the change of image density and the gradation correction unit according to judgment result.

Abstract translation: 具有形成灰度图像的图像形成单元的图像形成装置包括浓度检测，灰度校正和机构控制单元。 浓度检测单元检测灰度图像浓度。 灰度校正控制单元控制灰度特性的变化。 机构控制单元控制图像形成单元和图像浓度的变化，并且包括浓度差计算和比较判断单元。 密度差计算单元计算目标图像浓度和图像浓度之间的浓度差。 比较判断单元将浓度差与基准值进行比较，判断图像浓度变化，灰度校正单元进行浓度差超过基准值的运算，或者判断浓度差低于基准值的灰度校正单元 值。 机构控制单元根据判断结果来控制图像浓度的变化和灰度校正单元。

公开(公告)号：US08565627B2

公开(公告)日：2013-10-22

申请号：US12470608

申请日：2009-05-22

Applicant: Tatsuya Kinukawa ,  Hitoshi Furukawa ,  Takao Kume ,  Kazuhiro Funatani ,  Masahide Hirai ,  Yoshiro Saito ,  Tomoaki Nakai

Inventor： Tatsuya Kinukawa ,  Hitoshi Furukawa ,  Takao Kume ,  Kazuhiro Funatani ,  Masahide Hirai ,  Yoshiro Saito ,  Tomoaki Nakai

IPC: G03G15/00

CPC classification number: G03G15/5058 ,  G03G15/0131 ,  G03G15/1605 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/00063

Abstract: There is provided an image forming apparatus which shortens the time taken for circumference detection and measures the circumference at high precision without obstructing downsizing of the apparatus. To accomplish this, the image forming apparatus detects, at an arbitrary timing, the physical pattern of the image-formed surface of a rotation member that changes over time. In the second round, the image forming apparatus detects the second pattern at a timing a predetermined time after the arbitrary timing. By using the detected patterns, the image forming apparatus obtains information associated with the circumference of the rotation member.

Abstract translation: 提供了一种图像形成装置，其缩短了圆周检测所用的时间，并且高精度地测量圆周，而不会妨碍装置的小型化。 为了实现这一点，图像形成装置在任意定时检测随时间变化的旋转构件的图像形成表面的物理图案。 在第二轮中，图像形成装置在任意定时之后的预定时间的定时检测第二图案。 通过使用检测到的图案，图像形成装置获得与旋转构件的圆周相关联的信息。

公开(公告)号：US08509636B2

公开(公告)日：2013-08-13

申请号：US12949162

申请日：2010-11-18

Applicant: Masanori Akita

Inventor： Masanori Akita

IPC: G03G15/00

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

Abstract: An image forming apparatus includes a color image forming portion for forming a color toner image on an image bearing member and a transparent image forming portion for forming a transparent toner image on the image bearing member. The color and transparent image forming portions form test color and test transparent toner images on the image bearing member. A detecting portion detects a density of each of the test color and test transparent toner images and a control portion controls an image forming condition for an image to be formed on a recording material, on the basis of a result of the detection. The test transparent and test color toner images are formed on the image bearing member between operations for forming the images on the recording material. A frequency of formations of the test transparent toner images is lower than that of the formations of the test color toner images.

Abstract translation: 图像形成装置包括用于在图像承载部件上形成彩色调色剂图像的彩色图像形成部分和用于在图像承载部件上形成透明调色剂图像的透明图像形成部分。 颜色和透明图像形成部分形成测试颜色，并在图像承载部件上测试透明调色剂图像。 检测部分检测每个测试颜色和测试透明调色剂图像的浓度，并且控制部分基于检测结果控制要在记录材料上形成的图像的图像形成条件。 在用于在记录材料上形成图像的操作之间，在图像承载部件上形成测试的透明和测试彩色调色剂图像。 测试透明调色剂图像的形成频率低于测试彩色调色剂图像的形成频率。

公开(公告)号：US08422895B2

公开(公告)日：2013-04-16

申请号：US12714005

申请日：2010-02-26

Applicant: Osamu Takahashi

Inventor： Osamu Takahashi

IPC: G03G15/00

CPC classification number: G03G15/5058 ,  G03G15/0194 ,  G03G2215/00059 ,  G03G2215/00063

Abstract: An image forming apparatus is provided. The image forming apparatus includes, a carrier element, an image forming unit, a patch mark generation unit, a specular reflected light detection unit that detects light irradiated onto the carrier element by the irradiation unit and specularly-reflected by the carrier element or patch marks, and a diffuse reflected light detection unit that detects the light irradiated onto the carrier element by the irradiation unit and diffusely-reflected by the carrier element or the patch marks. Additionally, the image forming apparatus includes, a correction unit that corrects at least one of a value detected by the specular reflected light detection unit and the diffuse reflected light detection unit, a correction condition determination unit that determines correction conditions for the correction unit, and a density calculation unit that calculates a density of a patch mark.

Abstract translation: 提供一种图像形成装置。 图像形成装置包括：载体元件，图像形成单元，贴片标记生成单元，镜面反射光检测单元，其检测由照射单元照射到载体元件上并被载体元件或贴标记镜面反射的光 以及漫反射光检测单元，其通过照射单元检测照射到载体元件上的光并由载体元件或贴片标记漫反射。 另外，图像形成装置包括校正由镜面反射光检测单元和漫反射光检测单元检测的值中的至少一个的校正单元，确定校正单元的校正条件的校正条件判定单元，以及 密度计算单元，其计算贴片标记的密度。

公开(公告)号：US20120236338A1

公开(公告)日：2012-09-20

申请号：US13431868

申请日：2012-03-27

Applicant: Hiroshi Kita ,  Kiyoto Toyoizumi ,  Kenichi Iida

Inventor： Hiroshi Kita ,  Kiyoto Toyoizumi ,  Kenichi Iida

IPC: H04N1/60

CPC classification number: G03G15/5029 ,  G03G15/0131 ,  G03G15/5058 ,  G03G2215/00059 ,  G03G2215/00063

Abstract: A color image forming apparatus specifies print mode (media), forms a test image based on gradation levels of a plurality of colors according to the specified print mode (media), and detects the test image with a color sensor. The color image forming apparatus performs gray axis correction calculation based on detection result obtained by the color sensor.

Abstract translation: 彩色图像形成装置指定打印模式（介质），根据指定的打印模式（介质），根据多种颜色的灰度级形成测试图像，并用彩色传感器检测测试图像。 彩色图像形成装置基于由颜色传感器获得的检测结果进行灰度轴校正计算。