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1. 发明授权

US6057946A Tonality correction system 失效
标题翻译：调音系统
公开(公告)号：US6057946A
公开(公告)日：2000-05-02
申请号：US781060
申请日：1997-01-09
申请人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Tetsuya Nakamura , Tsunao Honbo
发明人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Tetsuya Nakamura , Tsunao Honbo
IPC分类号： G06T5/00 , H04N1/405 , H04N1/407 , G03F3/08
CPC分类号： H04N1/407 , H04N1/4056
摘要： An image processing apparatus and method which inputs multivalued image data capable of m-level representation, performs image processing on the input data, and converts the processed data into multivalued image data capable of n-level (m
摘要翻译：输入能够进行m级表示的多值图像数据的图像处理装置和方法，对输入数据执行图像处理，并将处理后的数据转换为能够进行n级（m

2. 发明授权

US06384857B2 Apparatus for forming images, method of controlling the apparatus, and storage medium 失效
标题翻译：用于形成图像的装置，控制装置的方法和存储介质
公开(公告)号：US06384857B2
公开(公告)日：2002-05-07
申请号：US08897549
申请日：1997-07-21
申请人： Nobuatsu Sasanuma , Tetsuya Atsumi , Yuichi Ikeda , Yasuhiro Saitou
发明人： Nobuatsu Sasanuma , Tetsuya Atsumi , Yuichi Ikeda , Yasuhiro Saitou
IPC分类号： B41J247
CPC分类号： H04N1/0411 , H04N1/0402 , H04N1/0446 , H04N1/0455 , H04N1/2307 , H04N1/2323 , H04N1/233
摘要： An image forming apparatus that increases the relative resolution of a small image to be output for recording. When the image forming apparatus is used for copying an image of an original document, when the size of an image to be output is not greater than a predetermined size, a CPU controls a resolution switching unit for increasing the resolution to form an image with increased resolution.
摘要翻译：一种图像形成装置，其增加要输出的用于记录的小图像的相对分辨率。当图像形成装置用于复印原始图像的图像时，当要输出的图像的尺寸不大于预定尺寸时，CPU控制分辨率切换单元，用于增加分辨率以形成具有增加的图像的分辨率解析度。

3. 发明授权

US06172771B2 Image forming system and calibration method for image forming conditions 失效
标题翻译：图像形成系统和图像形成条件的校准方法
公开(公告)号：US06172771B2
公开(公告)日：2001-01-09
申请号：US09062505
申请日：1998-04-20
申请人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Yasuhiro Saito
发明人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Yasuhiro Saito
IPC分类号： H04N100
CPC分类号： H04N1/6055
摘要： A system which utilizes plural image forming apparatus, equalizes gradation characteristics of images commonly output from such plural image forming apparatus. When the system includes three color copying apparatus, at first a test pattern image based on data from a pattern generator is output from the color copying apparatus. The prepared image is read by the reader of the color copying apparatus, and, based on the read data, the correction data of a table (LUT) are calibrated for obtaining density data for a laser beam. The calibration of the correction data of the color copying apparatus are conducted in a similar manner using, however, the reader of the same copying apparatus for reading the test pattern. It is therefore, rendered possible to exclude the influence of the difference in the reader characteristics on the calibration, and to equalize the gradation characteristics when the copying apparatus are used as printers.
摘要翻译：利用多个图像形成装置的系统，均衡从这种多个图像形成装置共同输出的图像的灰度特性。当系统包括三色复印设备时，首先从彩色复印设备输出基于来自图案发生器的数据的测试图案图像。准备的图像由彩色复印装置的读取器读取，并且基于读取的数据，对表（LUT）的校正数据进行校准，以获得用于激光束的浓度数据。然而，使用用于读取测试图案的相同复印设备的读取器，以类似的方式进行彩色复印设备的校正数据的校准。因此，可以排除读取器特性的差异对校准的影响，并且使复印装置用作打印机时的灰度特性相等。

4. 发明授权

US06535302B1 Image processing apparatus and method 失效
标题翻译：图像处理装置及方法
公开(公告)号：US06535302B1
公开(公告)日：2003-03-18
申请号：US09144449
申请日：1998-09-01
申请人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Yasuhiro Saito
发明人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Yasuhiro Saito
IPC分类号： H04N1407
CPC分类号： H04N1/407
摘要： When pixels in a two-dimensional matrix are divided into lines A and B in the column (or row) direction (sub-scanning direction) and two neighboring pixels in the row (or column) direction are subjected to gradation correction respectively using characteristic curves for lines A and B, the characteristic curve for line B unpreferably has a stepwise characteristic portion having a step when it is stored in an LUT, due to quantization errors unique to digital values. Hence, the characteristic curve for line A is set to be decreased by the amount corresponding to the step.
摘要翻译：当二维矩阵中的像素被分成行（或行）方向（副扫描方向）的行A和B，并且行（或列）方向上的两个相邻像素分别使用特性曲线对于线A和B，由于数字值唯一的量化误差，线B的特性曲线优选地具有逐步特征部分，当其存储在LUT中时具有步骤。因此，将线A的特性曲线设定为与步骤对应的量减少。

5. 发明授权

US06519054B1 Image processing apparatus and method 有权
标题翻译：图像处理装置及方法
公开(公告)号：US06519054B1
公开(公告)日：2003-02-11
申请号：US09287313
申请日：1999-04-07
申请人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi
发明人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi
IPC分类号： G06F1500
CPC分类号： H04N1/4078 , G06K15/1209 , G06K15/1223
摘要： When maximum density of an output image is lowered by a gamma correction, the number of tones is reduced and the tonality of the output image declines. In order to solve this problem, a pattern generator (215) is caused to generate a toned pattern and the gain of a D/A converter of a PWM circuit (212) is controlled so as to output a test pattern having a density ranging from maximum pulse width Pff(50%) to maximum pulse width Pff(100%) for each color component (step S1). Image information that has been read (step S2) from the test pattern is converted to density information (step S3), and Pff is set (step S4) from the relationship between Pff and image density based upon coordinate information provided by the test pattern.
摘要翻译：当通过伽马校正降低输出图像的最大浓度时，音调的数量减少并且输出图像的音调下降。为了解决这个问题，使图形发生器（215）产生色调图案，并且控制PWM电路（212）的D / A转换器的增益，以输出密度范围从每个颜色分量的最大脉冲宽度Pff（50％）到最大脉冲宽度Pff（100％）（步骤S1）。已经从测试图案读取的图像信息（步骤S2）被转换为浓度信息（步骤S3），并且基于由测试图案提供的坐标信息，通过Pff和图像浓度之间的关系来设置Pff（步骤S4）。

6. 发明授权

US06320605B1 Image information processing apparatus and method 有权
标题翻译：图像信息处理装置及方法
公开(公告)号：US06320605B1
公开(公告)日：2001-11-20
申请号：US09149279
申请日：1998-09-09
申请人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Yasuhiro Saito
发明人： Yuichi Ikeda , Nobuatsu Sasanuma , Tetsuya Atsumi , Yasuhiro Saito
IPC分类号： B41J247
CPC分类号： B41J2/0458 , B41J2/04591 , B41J2/04593 , B41J2/36 , H04N1/4056 , H04N1/6072
摘要： An image processing apparatus for performing pulse-width modulation processing based on input image data. A maximum pulse width of a pulse signal, which can be outputted as a modulation signal obtained by the pulse width modulation, is changed in accordance with an image processing mode.
摘要翻译：一种用于基于输入图像数据执行脉冲宽度调制处理的图像处理装置。可以根据图像处理模式来改变可以作为通过脉冲宽度调制获得的调制信号输出的脉冲信号的最大脉冲宽度。

7. 发明授权

US06184915B2 Image processing apparatus and method 失效
标题翻译：具有补偿输出装置特性的功能的图像处理装置和方法
公开(公告)号：US06184915B2
公开(公告)日：2001-02-06
申请号：US08890648
申请日：1997-07-09
申请人： Tetsuya Atsumi , Nobuatsu Sasanuma , Yuichi Ikeda , Yasuhiro Saito
发明人： Tetsuya Atsumi , Nobuatsu Sasanuma , Yuichi Ikeda , Yasuhiro Saito
IPC分类号： B41J247
CPC分类号： H04N1/6055
摘要： An image forming apparatus forms an image on a medium by using an output device. A pattern signal for forming a predetermined pattern image on the medium is generated, and image forming parameters for the output device are determined on the basis of the density of the pattern image formed on the medium. The determined image forming parameters are transmitted via bidirectional communication to an external computer or other image forming apparatus.
摘要翻译：图像形成设备通过使用输出设备在介质上形成图像。产生用于在介质上形成预定图案图像的图形信号，并且基于形成在介质上的图案图像的密度来确定用于输出装置的图像形成参数。所确定的图像形成参数通过双向通信传输到外部计算机或其它图像形成装置。

8. 发明授权

US5583644A System for correcting image density of an image forming system based on a detection result of a test image 失效
标题翻译：基于测试图像的检测结果来校正图像形成系统的图像浓度的系统
公开(公告)号：US5583644A
公开(公告)日：1996-12-10
申请号：US172106
申请日：1993-12-23
申请人： Nobuatsu Sasanuma , Hisashi Fukushima , Tetsuya Atsumi
发明人： Nobuatsu Sasanuma , Hisashi Fukushima , Tetsuya Atsumi
IPC分类号： B41J2/52 , G03G15/00 , G03G21/00 , H04N1/407 , H04N1/00 , G03F3/08 , H04N1/29 , H04N1/46
CPC分类号： G03G15/5062 , G03G15/5041 , H04N1/4078 , G03G2215/00042
摘要： An image forming system includes a generator for generating an image signal representing a predetermined test image having a plurality of tone levels, an image forming device for forming the predetermined test image on a recording medium based on the signal, a first measuring device for measuring density levels of the formed predetermined test image, corresponding to each of the plurality of tone levels of the image signal, a controller for determining characteristics of a change of density levels in the predetermined test image to a change of tone levels in the image signal based on a plurality of density levels measured by the first measuring device, and for making a conversion data table for converting tone levels of an input image signal in accordance with the characteristics, a designator for generating instructions for designation a correction of the conversion data table, a transferring device for transferring the image formed on the recording medium to a recording sheet, a second measuring device for measuring density levels of the image on the recording sheet, wherein the controller controls the generator, the image forming device, and the transferring devices to correct the conversion data table based on the density levels measured by the second measuring device.
摘要翻译：图像形成系统包括：发生器，用于产生表示具有多个音调电平的预定测试图像的图像信号;基于该信号在记录介质上形成预定测试图像的图像形成装置;用于测量密度的第一测量装置形成的预定测试图像的水平对应于图像信号的多个音调电平中的每一个;控制器，用于基于图像信号中的图像信号中的浓度水平的变化来确定预定测试图像中的浓度水平的变化由第一测量装置测量的多个密度级别，并且用于根据特性制作用于转换输入图像信号的音调电平的转换数据表，用于产生用于指定转换数据表的校正的指令的指示符，转印装置，用于将形成在记录介质上的图像转印到记录纸上用于测量记录片材上的图像的浓度水平的测量装置，其中控制器控制发生器，图像形成装置和转印装置，以基于由第二测量装置测量的密度水平校正转换数据表。

9. 发明授权

US5319433A Electrophotographing apparatus for forming color image 失效
标题翻译：用于形成彩色图像的电子照相设备
公开(公告)号：US5319433A
公开(公告)日：1994-06-07
申请号：US62222
申请日：1993-05-18
申请人： Hisashi Fukushima , Nobuatsu Sasanuma , Tetsuya Atsumi
发明人： Hisashi Fukushima , Nobuatsu Sasanuma , Tetsuya Atsumi
IPC分类号： G03G15/01
CPC分类号： G03G15/01
摘要： The present invention provides an electrophotographing apparatus for forming a color image of an improved image quality. For the provision of such an apparatus, a plurality of color developing means are arranged in the traveling direction of the electrophotographing member. The length of the traveling direction of the photosensitive member becomes longer, and the dark attenuation characteristics are created. The resultant problems which tend to lower the image quality are solved.In consideration of the dark attenuation characteristics of an electrophotographing photosensitive member, the present invention performs fine color adjustments according to each color of an developing image. In this adjustment, the gradation is corrected, or the color is corrected, per color in accordance with the dark attenuation characteristic.
摘要翻译：本发明提供一种用于形成改进图像质量的彩色图像的电子照相设备。为了提供这种装置，在电子照相构件的行进方向上布置有多个彩色显影装置。感光部件的行进方向的长度变长，产生暗衰减特性。解决了导致图像质量降低的问题。考虑到电子照相感光构件的暗衰减特性，本发明根据显影图像的各种颜色进行精细的颜色调整。在该调整中，根据暗衰减特性，根据颜色校正灰度或校正颜色。

10. 发明授权

US5517227A Image forming apparatus for automatically setting image formation conditions 失效
标题翻译：用于自动设定图像形成条件的图像形成装置
公开(公告)号：US5517227A
公开(公告)日：1996-05-14
申请号：US79825
申请日：1993-06-23
申请人： Tetsuya Atsumi , Hisashi Fukushima , Nobuatsu Sasanuma
发明人： Tetsuya Atsumi , Hisashi Fukushima , Nobuatsu Sasanuma
IPC分类号： B41J2/44 , G02B26/12 , G03G15/00 , G03G15/01 , G03G15/02 , G03G15/04 , G03G15/043 , G03G15/08 , H04N1/04 , H04N1/29 , H04N1/407 , H04N1/21
CPC分类号： G03G15/5062 , G03G15/0266 , H04N1/29 , H04N1/4076
摘要： This invention relates an image forming apparatus capable of automatically adjusting image formation conditions. A transfer medium having a detecting pattern image formed by an apparatus main body is read by an original reading unit. A look-up table for setting latent image formation conditions is corrected on the basis of a read output, thereby correcting image densities in a main-scan direction and/or a sub-scan direction.
摘要翻译：本发明涉及能够自动调整图像形成条件的图像形成装置。具有由装置主体形成的检测图案图像的转印介质由原稿读取单元读取。基于读取输出校正用于设置潜像形成条件的查找表，从而校正主扫描方向和/或副扫描方向上的图像浓度。

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