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1. 发明专利

JP2013236177A Image formation apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2013236177A
公开(公告)日：2013-11-21
申请号：JP2012106112
申请日：2012-05-07
申请人： Canon Inc , キヤノン株式会社
发明人： TAKAYAMA YUJI , SAEKI TOMOYUKI , ARAKI TAKESHI , UCHIDATE HIKARU
IPC分类号： H04N1/387 , B41J21/00 , G03G15/00 , H04N1/00 , H04N1/40
CPC分类号： H04N1/40 , H04N1/00005 , H04N1/00034 , H04N1/0005 , H04N1/00063 , H04N1/00068 , H04N1/00084 , H04N1/00578 , H04N1/0058 , H04N1/00612 , H04N1/00655 , H04N1/32133 , H04N1/387 , H04N2201/0091 , H04N2201/044 , H04N2201/3226 , H04N2201/3269 , H04N2201/3278
摘要： PROBLEM TO BE SOLVED: To provide an image formation apparatus which, even when an image to be read is deteriorated, prints a final print obtained by overwriting, in an easy-to-see state.SOLUTION: The image formation apparatus comprises: a document reading unit which is provided within the image formation apparatus to read an image of a document transported within the image formation apparatus; a pattern matching unit of a deterioration detection unit which detects deterioration of the image quality of the document read by the document reading unit; a host computer which generates a correction image to correct a pixel of the document in which the deterioration of image quality is detected by the pattern matching unit, and generates an image with which the document is to be overwritten; and a CPU which controls image information means for forming images. The CPU overprints the document with an image obtained by adding the overprint image and correction image generated by the host computer (S1503 to S1507).
摘要翻译：要解决的问题：提供一种图像形成装置，即使当要读取的图像劣化时，以易于看到的状态打印通过重写获得的最终打印。解决方案：图像形成装置包括：文档读取单元，其设置在所述图像形成设备内，以读取在所述图像形成设备内传送的文档的图像; 劣化检测单元的模式匹配单元，其检测由文档读取单元读取的文档的图像质量的劣化; 主计算机，生成校正图像以校正其中通过模式匹配单元检测到图像质量劣化的文档的像素，并且生成将要重写文档的图像; 以及控制用于形成图像的图像信息装置的CPU。 CPU通过添加由主机生成的叠印图像和校正图像而获得的图像来覆盖文档（S1503至S1507）。

2. 发明专利

JP2013031118A Image processing apparatus and program 有权
标题翻译：图像处理设备和程序
公开(公告)号：JP2013031118A
公开(公告)日：2013-02-07
申请号：JP2011167441
申请日：2011-07-29
申请人： Canon Inc , キヤノン株式会社
发明人： UCHIDATE HIKARU , SAEKI TOMOYUKI
IPC分类号： H04N1/405
CPC分类号： H04N1/4053
摘要： PROBLEM TO BE SOLVED: To provide a technique to detect, at high accuracy, degradation of image quality caused by halftone processing in image data having undergone a halftone processing, and prevent the degradation of the image quality.SOLUTION: An image processing apparatus according to this invention performs a first halftone processing for input image data having a first number of gradations to generate halftone image data having a second number of gradations smaller than the first number of gradations. The image processing apparatus evaluates a pixel value difference between the input image data and the halftone image data, and calculates quantization error data representing a quantization error generated in the halftone image data owing to the first halftone processing. Then, the image processing apparatus performs a second halftone processing for the calculated quantization error data to generate correction data having the second number of gradations for correcting the quantization error generated by the first halftone processing and correct the halftone image data using the correction data.
摘要翻译：要解决的问题：提供一种技术，以高精度检测经过半色调处理的图像数据中的半色调处理引起的图像质量的劣化，并且防止图像质量的劣化。解决方案：根据本发明的图像处理装置对具有第一数量的灰度的输入图像数据执行第一半色调处理，以产生具有小于第一数目灰度的第二数量级的半色调图像数据。图像处理装置评估输入图像数据和半色调图像数据之间的像素值差，并且计算表示由于第一半色调处理在半色调图像数据中产生的量化误差的量化误差数据。然后，图像处理装置对所计算的量化误差数据执行第二半色调处理，以产生具有用于校正由第一半色调处理产生的量化误差的第二数量级的校正数据，并使用校正数据校正半色调图像数据。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2010161503A Image forming apparatus and image forming method 审中-公开
标题翻译：图像形成装置和图像形成方法
公开(公告)号：JP2010161503A
公开(公告)日：2010-07-22
申请号：JP2009001105
申请日：2009-01-06
申请人： Canon Inc , キヤノン株式会社
发明人： TAKAYAMA YUJI , ISHIKAWA TAKASHI , SAEKI TOMOYUKI , ARAKI TAKESHI
IPC分类号： H04N1/40 , B41J2/52 , G06T5/00
CPC分类号： G06K9/38 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To suppress image deterioration occurring, when gradation of image data is reduced.
SOLUTION: An image forming apparatus includes: a resolution conversion unit 101 for converting multi-gradation image data into image data of N (N is a natural number satisfying 3≤N) tones, wherein N is less than the number of gradation of the multi-gradation image data, integrating an input pixel of interest in image data input in an input part with n (n is a natural number satisfying 2≤n) pixels that include the input pixel of interest and being contiguous in a sub-scanning direction, and determining the average value of pixel values of the n pixels as a pixel value of integrated pixels; a quantization unit 103 for quantizing the image data obtained by 101 to image data of N tones; and a pixel selection unit 104 for performing first determination processing for determining whether a difference between the pixel values of n input pixels which are contiguous in the sub-scanning direction exceeds a threshold value set, in advance, and second determination processing for determining whether a direction in which the pixel values of the n input pixels become greater is a forward direction of the sub-scanning direction or an opposite direction, and determining a pixel value of each of the n output pixels expressed with N tones.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了抑制图像劣化，当图像数据的灰度降低时。解决方案：一种图像形成装置包括：分辨率转换单元101，用于将多灰度图像数据转换为N（N是满足3≤N）个音调的自然数的图像数据，其中N小于渐变数的多灰度级图像数据，将输入部分中输入的图像数据中的感兴趣的输入像素与包括感兴趣的输入像素在子像素中的连续的n（n是满足2≤n的自然数）像素进行积分，并且将所述n个像素的像素值的平均值确定为集成像素的像素值; 用于量化通过101获得的图像数据以对N个音调进行图像数据的量化单元103; 以及像素选择单元104，用于执行用于确定预先在副扫描方向上连续的n个输入像素的像素值之间的差是否超过阈值设定的第一确定处理，以及用于确定是否 n个输入像素的像素值变大的方向是副扫描方向或相反方向的正方向，并且以N个色调来确定n个输出像素中的每一个的像素值。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2010099974A Image forming device and its control method 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：JP2010099974A
公开(公告)日：2010-05-06
申请号：JP2008274864
申请日：2008-10-24
申请人： Canon Inc , キヤノン株式会社
发明人： SAEKI TOMOYUKI , ARAKI TAKESHI , TAKAYAMA YUJI , ISHIKAWA TAKASHI
IPC分类号： B41J2/52 , G03G15/00 , G03G15/01 , G06T1/00 , H04N1/405 , H04N1/60
CPC分类号： H04N1/506 , G06K15/129 , H04N1/053 , H04N2201/04787
摘要： PROBLEM TO BE SOLVED: To suppress occurrence of moire and occurrence of jaggies at the edge part of a character line with a simple structure when correcting a color shift during formation of a color image.
SOLUTION: In an image forming device for forming a color image using an image support for plural colors with an electrophotography system, information on the shifted amount between an ideal scanning line and an actual scanning line in the main scanning direction on the image support is stored for each color. A read-out address to a bit map memory 403 is converted based on the stored information on the shifted amount for each color in a color correction amount operation part, and the image data is read. In a color shift correction part 404, gray level correction is applied to the read-out image data based on the address, and the image data including a value below the decimal point is output. In a multi-value error diffusion part 405, quantization by the multi-value error diffusion is applied to the image data including the value below the decimal point after the gray level correction.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在彩色图像形成期间校正颜色偏移时，以简单的结构抑制莫尔迹的发生和字符线的边缘部分发生锯齿状。解决方案：在使用电子照相系统使用多种颜色的图像支持器形成彩色图像的图像形成装置中，关于图像上的主扫描方向上的理想扫描线和实际扫描线之间的偏移量的信息每种颜色的存储支持。基于存储的关于颜色校正量操作部分中的每种颜色的偏移量的信息，对位图存储器403的读出地址进行转换，并读取图像数据。在颜色偏移校正部分404中，基于该地址对读出的图像数据应用灰度校正，并且输出包括低于小数点的值的图像数据。在多值误差扩散部分405中，通过多值误差扩散的量化被应用于包括灰度级校正之后的小数点以下的值的图像数据。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2011257497A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2011257497A
公开(公告)日：2011-12-22
申请号：JP2010130286
申请日：2010-06-07
申请人： Canon Inc , キヤノン株式会社
发明人： OGAWA YUICHI , FUKUTANI TAKAYUKI , TAKAYAMA YUJI , SAEKI TOMOYUKI , MUTSUO TAE
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063 , G03G2215/0164
摘要： PROBLEM TO BE SOLVED: To avoid the increase of a density unevenness due to a deviation between the predicted density unevenness and an actual density unevenness concerning density unevenness correction in banding.SOLUTION: An image forming apparatus includes an image forming part 60 including rotors to perform image formation based on image data. The image forming part corrects banding, based on correction information corresponding to the phases of the rotors concerning the periodic banding in a sub-scanning direction. Specifically, the apparatus includes: a CPU 21 for performing control to form an inspection image 39 to determine whether the banding is suppressed to be smaller than a prescribed threshold concerning an image to be formed by the image forming part; and a density sensor 71 for detecting the intensity of the periodic banding in the sub-scanning direction of the formed inspection image. When it is determined that the banding is not suppressed to be smaller than the prescribed threshold, based on the detected intensity of the banding, the CPU 21 performs control not to correct the banding or to reset correspondence between the phases of the rotors and the correction information.
摘要翻译：要解决的问题：为了避免由于预测浓度不均匀性和关于条带中的浓度不均匀性校正的实际浓度不均匀性之间的偏差引起的浓度不均匀性的增加。解决方案：图像形成装置包括图像形成部60，图像形成部60包括基于图像数据进行图像形成的转子。基于与副扫描方向上的周期性条带相关的转子的相位的校正信息来校正条带。具体地，该装置包括：CPU 21，用于执行控制以形成检查图像39，以确定该条带是否被抑制成小于关于由图像形成部分形成的图像的规定阈值; 以及密度传感器71，用于检测形成的检查图像的副扫描方向上的周期性条带的强度。当确定条带不被抑制为小于规定阈值时，基于检测到的条带强度，CPU 21执行不校正条带的控制或重置转子的相位与校正之间的对应关系信息。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2010161502A Image forming apparatus and method 审中-公开
标题翻译：图像形成装置和方法
公开(公告)号：JP2010161502A
公开(公告)日：2010-07-22
申请号：JP2009001104
申请日：2009-01-06
申请人： Canon Inc , キヤノン株式会社
发明人： ARAKI TAKESHI , ISHIKAWA TAKASHI , TAKAYAMA YUJI , SAEKI TOMOYUKI
IPC分类号： H04N1/405 , B41J2/52 , G06T5/00 , H04N1/46
摘要： PROBLEM TO BE SOLVED: To improve graininess and dot stability in image processing using a multi-level error diffusion method.
SOLUTION: An image forming apparatus A1 quantizes input image data and forms a visible image on a recording medium in accordance with quantized image data. The image forming apparatus includes: an input part which inputs image data to be recorded; an averaging part 101 which integrates a group of H pixels (H is an integer equal to or larger than 2) consecutive in a transport direction of the recording medium, which includes a target pixel in the input image data and begins with the target pixel, and sets an average value of pixel values of H pixels as a pixel value after the integration; a quantizing part 102 which quantizes the pixel value set in the averaging part 101 by the multi-level error diffusion method; and a divided pixel value determination part 103 which divides the target pixel obtained in the quantizing part 102 into H pixels in the transport direction and determines respective pixel values of H divided pixels in accordance with a preset condition.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：使用多级误差扩散方法改善图像处理中的粒度和点稳定性。解决方案：图像形成装置A1根据量化的图像数据量化输入图像数据并在记录介质上形成可见图像。图像形成装置包括：输入要记录的图像数据的输入部; 平均部分101，其将包括输入图像数据中的目标像素并从目标像素开始的记录介质的传送方向上连续的一组H像素（H是等于或大于2的整数）并将H像素的像素值的平均值设置为积分后的像素值; 量化部分102，其通过多级误差扩散方法对平均化部分101中设置的像素值进行量化; 以及划分像素值确定部分103，其将在量化部分102中获得的目标像素划分为传输方向上的H个像素，并根据预设条件确定H个划分像素的各个像素值。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2013235065A Image forming device 有权
标题翻译：图像形成装置
公开(公告)号：JP2013235065A
公开(公告)日：2013-11-21
申请号：JP2012106111
申请日：2012-05-07
申请人： Canon Inc , キヤノン株式会社
发明人： UCHIDATE HIKARU , TAKAYAMA YUJI , SAEKI TOMOYUKI , ARAKI TAKESHI , OGATA KAZUO , KATSUYAMA HIROKO , YASUMARU ICHIRO
IPC分类号： G03G21/04 , B41J5/30 , B41J29/40 , G03G21/00
CPC分类号： H04N1/40093 , H04N1/00864
摘要： PROBLEM TO BE SOLVED: To reduce a consumption amount of toner and also to protect information by overwrite printing.SOLUTION: An image forming device includes: a manuscript reading part 100 which is provided in the image forming device and reads a manuscript conveyed in the image forming device; an image feature amount analyzing part 8053 which analyzes the feature amount of orthographic information of a manuscript image read by the manuscript reading part 100; an overwrite image generating part 8054 which generates an image pattern used for performing overwrite printing on the manuscript, using image data having the feature amount based on an analysis result by the image feature amount analyzing part 8053; and a CPU 801 which protects the orthographic information by performing the overwrite printing of the image pattern generated by the overwrite generating part 8054 on the manuscript by image forming means.
摘要翻译：要解决的问题：减少调色剂的消耗量，并通过覆盖打印来保护信息。解决方案：图像形成装置包括：原稿读取部分100，其设置在图像形成装置中并读取在图像中传送的原稿成型装置; 图像特征量分析部8053，其分析由原稿读取部100读取的原稿图像的正交信息的特征量; 覆盖图像生成部8054，其使用基于图像特征量分析部8053的分析结果的具有特征量的图像数据，生成用于对原稿进行重写打印的图像图案; 以及CPU 801，其通过图像形成装置执行通过重写生成部分8054在原稿上生成的图像图案的重写打印来保护正射信息。

8. 发明专利

JP2011028227A Image forming apparatus and image forming method 有权
标题翻译：图像形成装置和图像形成方法
公开(公告)号：JP2011028227A
公开(公告)日：2011-02-10
申请号：JP2010125245
申请日：2010-05-31
申请人： Canon Inc , キヤノン株式会社
发明人： FUKUTANI TAKAYUKI , TAKAYAMA YUJI , SAEKI TOMOYUKI , MUTSUO TAE , OGAWA YUICHI
IPC分类号： G03G15/00 , G03G21/14
CPC分类号： G03G15/5008 , G03G15/0131 , G03G15/0194 , G03G15/1615 , G03G15/5058 , G03G2215/00059 , G03G2215/0129 , G03G2215/0164
摘要： PROBLEM TO BE SOLVED: To reduce density unevenness that may occur due to the rotation unevenness of the motor 6 that drives an image formation section. SOLUTION: An apparatus includes: an image formation section including a photosensitive drum 22 and so on; and the motor 6 for driving the image formation section. The apparatus acquires an FG signal, which in turn is phase information outputted from the motor 6, as the motor 6 rotates. In addition, the apparatus corrects unevenness of the density that may occur due to the rotation of the motor 6 according to the acquired phase information. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：减少由于驱动图像形成部的电动机6的旋转不均匀而可能发生的浓度不均匀。解决方案：一种设备包括：包括感光鼓22等的图像形成部分; 以及用于驱动图像形成部的马达6。当电动机6旋转时，该装置获取FG信号，FG信号又是从电动机6输出的相位信息。此外，该装置根据获取的相位信息来校正由于电动机6的旋转而可能发生的密度的不均匀性。版权所有（C）2011，JPO＆INPIT

9. 发明专利

JP2010103861A Image processing apparatus and image processing method 有权
标题翻译：图像处理装置和图像处理方法
公开(公告)号：JP2010103861A
公开(公告)日：2010-05-06
申请号：JP2008274866
申请日：2008-10-24
申请人： Canon Inc , キヤノン株式会社
发明人： TAKAYAMA YUJI , ISHIKAWA TAKASHI , SAEKI TOMOYUKI , ARAKI TAKESHI
IPC分类号： H04N1/40 , B41J2/52 , G06T5/00
CPC分类号： H04N1/4052 , H04N1/4056
摘要： PROBLEM TO BE SOLVED: To solve the problem, wherein the image quality results in being deteriorated in a gradation-converted output image, since in a case where a plurality of pixels are averaged in order to reduce the processing load of gradation conversion, when converting image data having the first number of gradations into image data having the smaller second number of gradations, information of a source image may be lost, if the density difference between the plurality of pixels is considerable.
SOLUTION: An input image analyzer 100 analyzes the differential value between two pixels adjacent in a sub scanning direction in an input image having the first number of gradations, and a longitudinal resolution converter 101 generates averaged image data obtained by averaging the two pixels. A multi-level error diffusion processor 103 then applies gradation conversion to the averaged image data, to produce low-gradation image data. An output pixel selector 104 selects two output pixel values, on the basis of an analysis result at the input image analyzer 100 for pixels of the low-gradation image data, thereby creating output image data having the second number of gradations.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题为了解决在灰度转换输出图像中图像质量导致劣化的问题，因为在为了减少灰度转换的处理负载而平均多个像素的情况下当将具有第一数量的灰度的图像数据转换为具有较小的第二数量的灰度的图像数据时，如果多个像素之间的浓度差相当大，则源图像的信息可能会丢失。解决方案：输入图像分析器100分析具有第一数量级的输入图像中的副扫描方向相邻的两个像素之间的差分值，并且纵向分辨率转换器101生成通过对两个像素进行平均而获得的平均图像数据。然后，多级误差扩散处理器103对平均的图像数据应用灰度转换，以产生低灰度级图像数据。输出像素选择器104基于输入图像分析器100的分析结果来选择两个输出像素值，以获得低灰度图像数据的像素，从而创建具有第二数量级的输出图像数据。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2014059516A Image forming device and control method thereof 审中-公开
标题翻译：图像形成装置及其控制方法
公开(公告)号：JP2014059516A
公开(公告)日：2014-04-03
申请号：JP2012205853
申请日：2012-09-19
申请人： Canon Inc , キヤノン株式会社
发明人： SAEKI TOMOYUKI , UCHIDATE HIKARU , TAKAYAMA YUJI , ARAKI TAKESHI
IPC分类号： G03G21/00 , B41J29/38 , G03G15/20 , G06F3/12 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To prevent fixation failure or paper jam during overwrite printing, to prevent reduction in usability.SOLUTION: An image forming device includes: a transfer part 15 which forms an image on a recording material; a document reading part 100 which reads a document; acquisition processing (S1102) acquiring information on a color material used in forming a document image or an image forming device which has formed the document image from document image data read by the document reading part 100; a program memory 803 which stores information on the image forming device; and a CPU 801 which permits (S1106, S1107) the transfer part 15 to perform overwrite printing on the document when the information acquired by the acquisition processing (S1102) has been stored in the program memory 803 (S1151-S1153).
摘要翻译：要解决的问题：为了防止在重写打印期间的固定失败或卡纸，以防止可用性降低。解决方案：图像形成装置包括：转印部分15，其在记录材料上形成图像; 读取文档的文档读取部100; 获取处理（S1102）从由文件读取部100读取的文件图像数据获取形成文件图像的彩色材料的信息或形成文件图像的图像形成装置; 存储关于图像形成装置的信息的程序存储器803; 以及当通过获取处理获得的信息（S1102）已经存储在程序存储器803中时，允许传送部分15（S1106，S1107）（S1106，S1107）对文档进行覆盖打印的CPU 801（S1151-S1153）。

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