公开(公告)号：US20140184696A1

公开(公告)日：2014-07-03

申请号：US14141299

申请日：2013-12-26

Applicant: FUJIFILM CORPORATION

Inventor： Tadashi KYOSO ,  Hiroyuki SHIBATA

IPC: B41J2/14

CPC classification number: B41J2/14 ,  B41J2/2132 ,  B41J2/2146

Abstract: A method for adjusting a head module of an inkjet head in which a plurality of head modules having nozzles capable of ejecting droplets are connected and linked together is disclosed. The inkjet head has an overlapping region in which an arrangement sequence of the head modules corresponding to the ejected droplets is alternate between adjacent head modules. The method includes the steps of: obtaining, among intervals between the droplet ejected by one of the head modules and the droplet ejected by another one of the head modules in the overlapping region, a largest interval between the droplets in a direction of alignment of the head modules based upon movement of the droplets caused by a landing interference; and adjusting the adjacent head modules in a direction to decrease the largest interval between the droplets.

Abstract translation: 公开了一种用于调整喷墨头的头模块的方法，其中具有能够喷射液滴的喷嘴的多个头模块连接并连接在一起。 喷墨头具有重叠区域，其中对应于喷出的液滴的头模块的排列顺序在相邻的头模块之间交替。 该方法包括以下步骤：在由一个头模块喷射的液滴和由重叠区域中的另一个头模块喷射的液滴之间的间隔中获得在液滴之间的最大间隔 基于由着陆干扰引起的液滴移动的头模块; 并且沿着减小液滴之间的最大间隔的方向调节相邻的头模块。

公开(公告)号：US20150049366A1

公开(公告)日：2015-02-19

申请号：US14460500

申请日：2014-08-15

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: G06K15/10 ,  G06K15/02

CPC classification number: H04N1/40 ,  H04N1/4051

Abstract: A quantization method according to an aspect of the present invention includes the steps of quantizing a first image data by the use of a basic pattern and converting the first image data into a second image data that represents a binary or multi-level quantized pattern having a gray level smaller than that of the first image data. The basic pattern according to this aspect of the present invention presents high frequent occurrence of the basic tone patterns and a mostly uniform-distributed pattern of the clusters of different kinds of the basic tone patterns in the image with the long-distance autocorrelation (periodicity) of the basic tone patterns suppressed. Quantization by the use of this basic pattern provides a quantized pattern that reflects pattern characteristics of the basic pattern.

Abstract translation: 根据本发明的一个方面的量化方法包括以下步骤：通过使用基本模式对第一图像数据进行量化，并将第一图像数据转换成表示二进制或多级量化图案的第二图像数据，该第二图像数据具有 灰度级小于第一图像数据的灰度级。 根据本发明的这个方面的基本模式，呈现出高频率的基本色调图案和图像中不同种类的基本色调图案的群集的大部分均匀分布的图案，具有长距离自相关（周期性） 的基本色调图案被抑制。 通过使用这种基本模式的量化提供了反映基本模式的模式特征的量化模式。

公开(公告)号：US20150043836A1

公开(公告)日：2015-02-12

申请号：US14521128

申请日：2014-10-22

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: G06T3/40 ,  G06K15/02 ,  B41J2/015 ,  G06K15/10

CPC classification number: G06T3/4023 ,  B41J2/015 ,  B41J2/2139 ,  B41J2/2146 ,  G06K15/102 ,  G06K15/1869 ,  G06K2215/101

Abstract: An image processing method includes: storing a threshold matrix for quantization processing of input image data, applying mask processing to an abnormal recording element based on abnormal recording element information, correcting a correspondence relationship between a recording element and a threshold such that processing of a pixel to be formed by the abnormal recording element subjected to mask processing is excluded and the continuity of a pattern of the threshold matrix is maintained, and performing quantization processing using a corrected threshold matrix.

Abstract translation: 一种图像处理方法包括：存储用于输入图像数据的量化处理的阈值矩阵，基于异常记录元素信息对异常记录元素应用掩模处理，校正记录元素与阈值之间的对应关系，使得处理像素 由除了进行掩模处理的异常记录元件形成，并且保持阈值矩阵的模式的连续性，并且使用校正的阈值矩阵进行量化处理。

公开(公告)号：US20150290930A1

公开(公告)日：2015-10-15

申请号：US14748041

申请日：2015-06-23

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: B41J2/045

CPC classification number: B41J2/0451 ,  B41J2/04586 ,  B41J2/2139 ,  B41J2/2146 ,  G06K15/102 ,  G06K15/408

Abstract: The image processing device divides image data into regions corresponding to a first pixel row, a second pixel row, a third pixel row, and a fourth pixel row, and generate output data, in which a generation rate of an ink droplet with a relatively large size, a generation rate of an ink droplet with a relatively small size, and the amount of ink discharged per unit area vary depending on a gradation value of the image data, for each of the divided regions. At the time of the generation of the output data, different output data items are generated for a third nozzle corresponding to the third pixel row when the first gradation value indicates a relatively high gradation and when the first gradation value indicates a relatively low gradation.

Abstract translation: 图像处理装置将图像数据分割为与第一像素行，第二像素行，第三像素行和第四像素行对应的区域，并且生成输出数据，其中具有相对较大的墨滴的生成速率 尺寸，具有相对较小尺寸的墨滴的产生速率，并且每单位面积排出的墨水量根据图像数据的灰度值而变化，对于每个分割区域。 在产生输出数据时，当第一灰度值表示相对较高的灰度时，以及当第一灰度值表示相对低的灰度时，针对与第三像素行对应的第三喷嘴生成不同的输出数据项。

公开(公告)号：US20190381804A1

公开(公告)日：2019-12-19

申请号：US16556202

申请日：2019-08-29

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: B41J2/21 ,  G06K15/02 ,  H04N1/52

Abstract: Provided are an image processing method, an image processing device, and an image recording apparatus capable of suppressing generation of beats, even in a case where streaky unevenness correction other than non-discharge correction of a recording element is performed, in any nozzle layout shapes. An image processing method comprises an abnormality detection step of detecting an abnormality for each recording element in a recording head in which a plurality of the recording elements are arranged; an invisibilization step of modulating densities of pixels to be recorded on a recording medium by the correction recording element including an abnormal recording element of which the abnormality has been detected to invisibilize a defect of an image, in order to correct the defect of the image resulting from the abnormal recording element depending on a detection result in the abnormality detection step; and a quantization step of quantizing an image to be recorded on the recording medium, and performing the quantization such that a peak frequency component of the quantization is located in a frequency band excluding a frequency band around a spatial frequency peak of a correction region that is a pixel group to be recorded on the recording medium by the correction recording element of which a density has been modulated by the invisibilization step.

公开(公告)号：US20170282535A1

公开(公告)日：2017-10-05

申请号：US15470919

申请日：2017-03-28

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: B41J2/045

CPC classification number: B41J2/0451 ,  B41J2/04586 ,  B41J2/2139 ,  B41J2/2142 ,  B41J2/2146

Abstract: A image forming apparatus includes: a device that detects abnormality of an image caused by abnormality of a nozzle in an inkjet head and a correcting device that performs correction by making a part of a plurality of nozzles non-ejectable based on a detection result of the abnormality and by compensating for it by another nozzle. The correcting device includes a plural non-ejection correcting device that performs correction by making two or more nozzles non-ejectable with respect to one abnormal nozzle and a single non-ejection correcting device that performs correction by making one abnormal nozzle non-ejectable with respect to the one abnormal nozzle. After a plural non-ejection correction is performed by making a nozzle group belonging to a nozzle range of a region including abnormality and including an abnormal nozzle non-ejectable, a single non-ejection correction is performed by making the abnormal nozzle non-ejectable.

公开(公告)号：US20150286908A1

公开(公告)日：2015-10-08

申请号：US14745125

申请日：2015-06-19

Applicant: FUJIFILM CORPORATION

Inventor： Hiroyuki SHIBATA

IPC: G06K15/02

CPC classification number: G06K15/1881 ,  B41J2/2139 ,  H04N1/405 ,  H04N1/52

Abstract: An image processing method corrects the image concentration of pixel rows adjacent to a pixel row corresponding to a masked defective recording element. Different quantization methods are performed for a first image region including the pixel row corresponding to the masked defective recording element and the pixel rows adjacent to the pixel row and a second image region other than the first image region. For at least some gradations, a first quantization pattern which is obtained by the first quantization method applied to the first image region has a pattern characteristic in which a spatial frequency component in a first direction parallel to the moving direction of a recording medium relative to the recording head is suppressed with respect to all spatial frequency components in a second direction perpendicular to the first direction, as compared to a second quantization pattern applied to the second image region.

Abstract translation: 图像处理方法校正与被掩蔽的有缺陷的记录元件相对应的像素行相邻的像素行的图像浓度。 对于包括与被掩蔽的有缺陷的记录元素相对应的像素行的第一图像区域和与像素行相邻的像素行以及除了第一图像区域之外的第二图像区域，执行不同的量化方法。 对于至少一些灰度，通过应用于第一图像区域的第一量化方法获得的第一量化模式具有图案特性，其中与记录介质的移动方向平行的第一方向上的空间频率分量相对于 与应用于第二图像区域的第二量化图案相比，在垂直于第一方向的第二方向上相对于所有空间频率分量抑制记录头。

公开(公告)号：US20210001638A1

公开(公告)日：2021-01-07

申请号：US17031007

申请日：2020-09-24

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: B41J2/21 ,  B41J2/045

Abstract: Provided is an image forming apparatus and a method, an abnormal nozzle detection method, and a printed matter manufacturing method that can suppress the consumption of an extra medium and can efficiently specify an abnormal nozzle. The image forming apparatus (10) includes a print head (16) that has a plurality of nozzles, an association unit (40) that associates the nozzle with a partial region in a user image, a first correction unit that performs a first correction assuming that the associated nozzle is abnormal in at least one of the partial regions, a streak detection unit (44) that detects streak information from a print result of the user image including the partial region subjected to the first correction, and a nozzle state estimation unit (46) that estimates a state of the nozzle on the basis of the streak information of two or more partial regions in a single user image.

公开(公告)号：US20160283832A1

公开(公告)日：2016-09-29

申请号：US15081204

申请日：2016-03-25

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki SHIBATA

IPC: G06K15/02 ,  G06K15/10

CPC classification number: G06K15/1881 ,  G06K15/102

Abstract: A quantization method includes: quantizing first image data, and converting the first image data to second image data that indicates a binary or multivalued quantized pattern with a smaller number of gradations than that of the first image data, for which dots are arranged by the same recording element for individual pixels of a pixel column along a first direction respectively and dots are arranged at a plurality of different timings for individual pixels of a pixel column along a second direction orthogonal to the first direction; and optimizing the quantization in at least some gradations, and reducing dispersion of a generation frequency of a dot arrangement for each relative positional relation between a pixel of interest in the case that individual pixels within the quantized pattern are successively defined as the pixel of interest and a plurality of vicinity pixels positioned in the vicinity of the pixel of interest.

Abstract translation: 一种量化方法包括：量化第一图像数据，并将第一图像数据转换成指示二进制或多值量化图案的第二图像数据，该二值或多值量化图案的数量比第一图像数据的灰度级数少 分别沿着第一方向的像素列的各个像素的记录元素，并且沿与第一方向正交的第二方向的像素列的各个像素以多个不同的定时排列点; 并且在至少一些灰度中优化量化，并且在量化图案中的各个像素被连续地定义为感兴趣的像素的情况下，减少感兴趣像素之间的每个相对位置关系的点排列的生成频率的色散，以及 位于感兴趣像素附近的多个附近像素。

公开(公告)号：US20150042717A1

公开(公告)日：2015-02-12

申请号：US14521012

申请日：2014-10-22

Applicant: FUJIFILM CORPORATION

Inventor： Hiroyuki SHIBATA

IPC: G06T3/40 ,  B41J2/02

CPC classification number: G06T3/4023 ,  B41J2/02 ,  B41J2/2139 ,  H04N1/405 ,  H04N1/409

Abstract: An image processing method includes: applying mask processing to an abnormal recording element based on abnormal recording element information; converting input image data such that a pixel to be formed by the abnormal recording element is excluded; applying quantization processing that converts the converted input image data to image data having a gradation number less than a gradation number of the converted input image data; and assigning each pixel forming image data after quantization processing to a normal recording element.

Abstract translation: 一种图像处理方法包括：基于异常记录元素信息对异常记录元素应用掩模处理; 转换输入图像数据，使得排除由异常记录元件形成的像素; 应用量化处理，将经转换的输入图像数据转换成具有小于所转换的输入图像数据的灰度数的灰度数的图像数据; 以及将在量化处理之后形成图像数据的每个像素分配给正常记录元素。