公开(公告)号：US07766443B2

公开(公告)日：2010-08-03

申请号：US11698871

申请日：2007-01-29

Applicant: Yasunari Yoshida

Inventor： Yasunari Yoshida

IPC: B41J29/38

CPC classification number: B41J29/38 ,  B41J11/42

Abstract: An image forming apparatus includes a feeding roller and a recording unit. The feeding roller is rotatably disposed to convey the recording medium in a conveying direction, and includes a rotational axle that is eccentric and a peripheral surface having an actual external dimension that is different from a theoretical external dimension. The recording unit has a head length in the conveying direction. A method of compensating for an error of a conveyance distance of a recording medium in the image forming apparatus includes (1) printing a first image on the recording medium; (2) rotating the feeding roller N turns, N being a positive integer; (3) printing a second image on the recording medium after the feeding roller has been rotated N turns; and (4) determining difference of the actual external dimension from the theoretical external dimension, based on both the first image and the second image.

Abstract translation: 图像形成装置包括进给辊和记录单元。 馈送辊被可旋转地设置成沿传送方向传送记录介质，并且包括偏心的旋转轴和具有与理论外部尺寸不同的实际外部尺寸的外周表面。 记录单元在输送方向具有头部长度。 补偿图像形成装置中的记录介质的输送距离误差的方法包括：（1）在记录介质上印刷第一图像; （2）使进给辊N旋转，N为正整数; （3）在进给辊已经旋转N圈之后在记录介质上打印第二图像; 和（4）基于第一图像和第二图像来确定实际外部尺寸与理论外部尺寸的差异。

公开(公告)号：US20100165032A1

公开(公告)日：2010-07-01

申请号：US12633450

申请日：2009-12-08

Applicant: Yasunari Yoshida

Inventor： Yasunari Yoshida

IPC: B41J2/205

CPC classification number: H04N1/6019

Abstract: A print controller is provided for generating dot data, which specifies a dot formation state and which is to be provided to a printing unit. The printing unit is configured to execute, based on the dot data, dot-forming operations to form dots in dot rows extending in a prescribed direction by moving a print head in the prescribed direction while ejecting ink droplets from nozzles in the print head and to print an image by repeatedly executing the dot-forming operation to form a plurality of dot rows juxtaposed in a direction orthogonal to the prescribed direction. The print controller includes: a printing width determining unit; a density data generating unit; and a dot data generating unit. The printing width determining unit determines a printing width value corresponding to a working distance of the print head in the prescribed direction. The density data generating unit generates density data specifying ink densities related to the quantity of ink for each pixel based on image data specifying a gradation value for each pixel and based on the printing width value, the density data generating unit generating the density data so that an upper limit on a tolerable ink density per pixel grows smaller as the working distance of the print head in the prescribed direction corresponding to the printing width value grows shorter. The dot data generating unit generates dot data by executing a halftone process on the density data generated by the density data generating unit.

Abstract translation: 提供了一种用于产生点数据的打印控制器，其指定点形成状态并将被提供给打印单元。 打印单元被配置为基于点数据执行点形成操作，以通过沿着规定方向移动打印头而在指定方向上延伸的点列形成点，同时从打印头中的喷嘴喷出墨滴，并且 通过重复执行点形成操作以形成与正规方向正交的方向并列的多个点列来打印图像。 打印控制器包括：打印宽度确定单元; 密度数据生成单元; 和点数据生成单元。 打印宽度确定单元确定与打印头在规定方向上的工作距离相对应的打印宽度值。 密度数据生成单元基于指定每个像素的灰度值的图像数据，并且基于打印宽度值，生成密度数据，其指定与每个像素的墨量相关的墨密度，密度数据生成单元生成密度数据，使得 随着打印头在与打印宽度值对应的规定方向上的工作距离越来越短，每个像素的容许墨密度的上限越小。 点数据生成单元通过对密度数据生成单元生成的密度数据执行半色调处理来生成点数据。

公开(公告)号：US07706709B2

公开(公告)日：2010-04-27

申请号：US11475170

申请日：2006-06-27

Applicant: Yoshinari Okamoto ,  Yasunari Yoshida

Inventor： Yoshinari Okamoto ,  Yasunari Yoshida

IPC: G03G15/20

CPC classification number: G03G15/5004 ,  G03G15/205

Abstract: An image forming apparatus that includes: a reading unit; an image forming unit that forms an image on a sheet; a fixing unit; a mode selecting unit that selects a first mode from plural modes, in the first mode of which a document is read by the reading unit and the image is formed by the image forming unit; a temperature controlling unit that controls a temperature of the fixing unit to be one of a fixing state a standby state and a sleep state; a sleep transferring unit that transfers to the sleep state; and a switching unit that switches the fixing unit to the standby state on selecting the first mode. The temperature is controlled to transfer to the standby state on switching to transfer to the standby state, and otherwise, controlled to be in the sleep state is until receiving an instruction to the first mode.

Abstract translation: 一种图像形成装置，包括：读取单元; 图像形成单元，其在片材上形成图像; 固定单元; 模式选择单元，其在第一模式中从多个模式中选择第一模式，其中由读取单元读取文档，并且由图像形成单元形成图像; 温度控制单元，其将所述定影单元的温度控制为待机状态和睡眠状态的固定状态之一; 一个转移到睡眠状态的睡眠转移单元; 以及切换单元，其在选择第一模式时将定影单元切换到待机状态。 在转换到待机状态时，控制温度转移到待机状态，否则被控制为处于睡眠状态直到接收到第一模式的指令。

公开(公告)号：US07626723B2

公开(公告)日：2009-12-01

申请号：US11065453

申请日：2005-02-25

Applicant: Ryuji Yamada ,  Masaki Kondo ,  Yasunari Yoshida

Inventor： Ryuji Yamada ,  Masaki Kondo ,  Yasunari Yoshida

IPC: G06F15/00 ,  G03F3/08 ,  H04N1/46 ,  G06K9/00

CPC classification number: H04N1/6058

Abstract: A color-conversion-table creating method includes (a) defining a color gamut in a first color space defined for a first device, the color gamut having a surface, an internal space surrounded by the surface, surface grid points positioned on the surface, and internal grid points positioned in the internal space, and determining a correspondence relationship between the surface grid points in the first color space and parameters in a second color space defined for a second device, (b) determining, based on the correspondence relationship determined in step (a), a correspondence relationship between the internal grid points in the first color space and parameters in the second color space, and (c) creating a color conversion table indicative of a correspondence relationship between all grid points in the first color space and parameters in the second color space based on both the correspondence relationship determined in step (a) and the correspondence relationship determined in step (b).

Abstract translation: 颜色转换表创建方法包括：（a）在为第一设备定义的第一颜色空间中定义色域，色域具有表面，被表面包围的内部空间，位于表面上的表面网格点， 以及位于所述内部空间中的内部网格点，以及确定所述第一颜色空间中的表面网格点与为第二设备定义的第二颜色空间中的参数之间的对应关系，（b）基于在 步骤（a），第一颜色空间中的内部网格点与第二颜色空间中的参数之间的对应关系，以及（c）创建指示第一颜色空间中的所有网格点之间的对应关系的颜色转换表，以及 基于在步骤（a）中确定的对应关系和步骤（b）中确定的对应关系的第二颜色空间中的参数。

公开(公告)号：US07595920B2

公开(公告)日：2009-09-29

申请号：US11359537

申请日：2006-02-23

Applicant: Masaki Kondo ,  Yasunari Yoshida ,  Takeshi Watanabe

Inventor： Masaki Kondo ,  Yasunari Yoshida ,  Takeshi Watanabe

IPC: G03F3/08 ,  G06K9/001

CPC classification number: H04N1/6058 ,  H04N1/628

Abstract: An image processing apparatus for color image information inputs a combination of component values of reference colors that constitute a processing color, and converts the combination of component values into a lightness value, saturation value, and hue value. The first correction factor, the second correction factor, and the third correction factor each has a value of 1.0 for a lightness value, saturation value and hue value converted from a specified color respectively, and monotonically decreases toward 0.0. The modulation amount storage means stores a modulation amount of the lightness value, saturation value, and hue value respectively.The lightness correction means computes a corrected lightness value from the converted lightness value, the saturation correction means computes a corrected saturation value from the converted saturation value, and the hue correction means computes a corrected hue value from the converted hue value by using the first, second, and third correction factors, and the modulation amount. The inverse conversion means inversely converts the corrected lightness value, corrected saturation value, and corrected hue value into a combination of component values of reference colors.

Abstract translation: 用于彩色图像信息的图像处理设备输入构成处理颜色的参考颜色的分量值的组合，并将分量值的组合转换为亮度值，饱和度值和色调值。 第一校正因子，第二校正因子和第三校正因子分别对于从指定颜色转换的亮度值，饱和度值和色相值分别为1.0，并且朝向0.0单调减小。 调制量存储装置分别存储亮度值，饱和度值和色相值的调制量。 亮度校正装置根据转换的亮度值计算校正亮度值，饱和校正装置根据转换后的饱和度计算校正的饱和度值，色相校正装置通过使用第一， 第二和第三校正因子以及调制量。 逆变换装置将校正后的亮度值，校正后的饱和度值和校正后的色调值逆变换为基准色的分量值的组合。

公开(公告)号：US07369710B2

公开(公告)日：2008-05-06

申请号：US10925910

申请日：2004-08-26

Applicant: Yasunari Yoshida

Inventor： Yasunari Yoshida

IPC: G06K9/36 ,  G06K9/46

CPC classification number: H04N1/4053

Abstract: An image processing device performs an error diffusion on multilevel input image data to generate multilevel output image data that has fewer levels than the multilevel input image data. The image processing device includes a plurality of setting devices, each of which sets a threshold value to be used at the error diffusion, a threshold value selecting device that randomly selects one of the plurality of setting devices with respect to each pixel to be processed and allows the selected setting device to set a threshold value with respect to the pixel to be processed when the image processing device performs the error diffusion, and a converting device that converts the pixel to be processed into multilevel output image data with fewer levels than multilevel input image data by the error diffusion, in accordance with the threshold value set by the setting device selected by the threshold value selecting device. The plurality of setting devices includes at least a first setting device and a second setting device that sets a threshold value which is higher than a threshold value set by the first setting device.

Abstract translation: 图像处理装置对多级输入图像数据执行误差扩散，以产生具有比多级输入图像数据更少的级别的多级输出图像数据。 图像处理装置包括多个设定装置，每个设定装置设定要在误差扩散中使用的阈值;阈值选择装置，其针对每个要处理的像素随机选择多个设定装置中的一个， 允许所选择的设置设备在图像处理设备执行错误扩散时相对于要处理的像素设置阈值;以及转换设备，其将要处理的像素转换为具有比多级输入更少的级别的多级输出图像数据 根据由阈值选择装置选择的设定装置设定的阈值，通过误差扩散的图像数据。 多个设定装置至少包括设定比由第一设定装置设定的阈值高的阈值的第一设定装置和第二设定装置。

公开(公告)号：US07367156B2

公开(公告)日：2008-05-06

申请号：US11006686

申请日：2004-12-08

Applicant: Masaki Kondo ,  Yasunari Yoshida ,  Masashi Ueda

Inventor： Masaki Kondo ,  Yasunari Yoshida ,  Masashi Ueda

IPC: B41J2/205

CPC classification number: B41J2/2121

Abstract: An inkjet recording device records images by forming dots on a recording medium with droplet modulating method. The inkjet recording device includes a recording unit, a multilevel-data creating portion, and a dot-layout-data creating portion. The recording unit ejects ink droplets for forming dots at corresponding pixel positions. The recording unit is capable of changing a volume of each ink droplet to form dots with different sizes. The multilevel-data creating portion creates multilevel data based on image data. The multilevel data includes a dot size for each dot. The dot-layout-data creating portion creating dot layout data based on the multilevel data, so as to prevent the recording unit from forming dots having the same size continuously by greater than or equal to a predetermined number. The recording unit performs recording operation based on the dot layout data.

Abstract translation: 喷墨记录装置通过用液滴调制方法在记录介质上形成点来记录图像。 喷墨记录装置包括记录单元，多级数据创建部分和点布局数据创建部分。 记录单元喷射墨滴以在相应的像素位置形成点。 记录单元能够改变每个墨滴的体积以形成具有不同尺寸的点。 多级数据创建部分基于图像数据创建多级数据。 多级数据包括每个点的点大小。 点阵布局数据创建部分基于多级数据创建点布局数据，以防止记录单元连续形成具有大于或等于预定数量的相同尺寸的点。 记录单元基于点布局数据执行记录操作。

公开(公告)号：US20070176955A1

公开(公告)日：2007-08-02

申请号：US11699416

申请日：2007-01-30

Applicant: Yasunari Yoshida

Inventor： Yasunari Yoshida

IPC: B41J29/38

CPC classification number: B41J13/0027

Abstract: An image forming device includes a recording head, a first pair of conveying rollers, a second pair of conveying rollers, and a conveyance controller. The conveyance controller controls the first and second pairs of conveying rollers to halt a conveying operation of the recording medium when a trailing edge of the recording medium has moved to or exceeded a position downstream from the nip position of the first pair of conveying rollers by a first prescribed distance during a first prescribed period of time running from a time instant when the trailing edge of the recording medium has passed through the nip position of the first pair of the conveying rollers.

Abstract translation: 图像形成装置包括记录头，第一对输送辊，第二对输送辊和输送控制器。 输送控制器控制第一和第二对输送辊，当记录介质的后缘移动到或超过第一对输送辊的压合位置下游的位置时，停止记录介质的输送操作 在从第一对传送辊的夹持位置通过记录介质的后缘的时刻开始的第一规定时间段内的第一规定距离。

公开(公告)号：US07245397B2

公开(公告)日：2007-07-17

申请号：US11109752

申请日：2005-04-20

Applicant: Yasunari Yoshida

Inventor： Yasunari Yoshida

IPC: G06F15/00 ,  B41J2/205

CPC classification number: H04N1/52

Abstract: An image forming apparatus is disclosed in which a quantization is effected for a halftone color image decomposed into pixels, in which a comparison is made, for respective separate color-components of each pixel, between a tone level of each pixel and a threshold value, and in which the tone level of each pixel is quantized to produce a discrete value having n levels. With a neighboring pixel of the subject pixel containing a first color-component, and with the subject pixel containing a second color-component, a relationship between the tone level of the second color-component of the subject pixel and the threshold value is compensated, such that, as the tone level of the first color-component of the neighboring pixel increases, a probability of occurrence of a second color-component ink dot formed at the subject pixel and/or a volume of an ink used for the same dot at the subject pixel, decreases.

Abstract translation: 公开了一种图像形成装置，其中对于分解成像素的半色调彩色图像进行量化，其中进行比较，对于每个像素的各个分立的颜色分量，每个像素的色调电平和阈值之间， 并且其中每个像素的音调电平被量化以产生具有n个电平的离散值。 利用包含第一颜色分量的被摄体像素的相邻像素，并且与被摄体像素包含第二颜色分量，补偿目标像素的第二色彩分量的色调电平与阈值之间的关系， 使得当相邻像素的第一颜色分量的色调级别增加时，形成在对象像素处的第二颜色成分墨点的出现概率和/或用于相同点的墨的体积 主体像素减小。

公开(公告)号：US20060291884A1

公开(公告)日：2006-12-28

申请号：US11475170

申请日：2006-06-27

Applicant: Yoshinari Okamoto ,  Yasunari Yoshida

Inventor： Yoshinari Okamoto ,  Yasunari Yoshida

IPC: G03G15/20

CPC classification number: G03G15/5004 ,  G03G15/205

Abstract: An image forming apparatus that includes: a reading unit; an image forming unit that forms an image on a sheet; a fixing unit; a mode selecting unit that selects a first mode from plural modes, in the first mode of which a document is read by the reading unit and the image is formed by the image forming unit; a temperature controlling unit that controls a temperature of the fixing unit to be one of a fixing state a standby state and a sleep state; a sleep transferring unit that transfers to the sleep state; and a switching unit that switches the fixing unit to the standby state on selecting the first mode. The temperature is controlled to transfer to the standby state on switching to transfer to the standby state, and otherwise, controlled to be in the sleep state is until receiving an instruction to the first mode.

Abstract translation: 一种图像形成装置，包括：读取单元; 图像形成单元，其在片材上形成图像; 固定单元; 模式选择单元，其在第一模式中从多个模式中选择第一模式，其中由读取单元读取文档，并且由图像形成单元形成图像; 温度控制单元，其将所述定影单元的温度控制为待机状态和睡眠状态的固定状态之一; 一个转移到睡眠状态的睡眠转移单元; 以及切换单元，其在选择第一模式时将定影单元切换到待机状态。 在转换到待机状态时，控制温度转移到待机状态，否则被控制为处于睡眠状态直到接收到第一模式的指令。