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1. 发明申请

US20180239284A1 IMAGE FORMING APPARATUS, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM 审中-公开
公开(公告)号：US20180239284A1
公开(公告)日：2018-08-23
申请号：US15896623
申请日：2018-02-14
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： B41J2/385 , H04N1/409
CPC分类号： G03G15/5025 , G03G15/043 , G03G2215/0439 , H04N1/409 , H04N1/4092
摘要： An image forming apparatus obtains a number of pixels to be developed on a downstream side in a sub-scanning direction from the each one of the predetermined pixels, in order to correct a density increase that occurs at the trailing edge of an image to be formed in accordance with a peripheral speed difference between a photosensitive drum and a developing roller, determines a correction amount of light amount for each one of the predetermined pixels in accordance with the obtained number of pixels, and generates image formation data.

2. 发明授权

US10048613B2 Image forming apparatus, printing control method of the same, and storage medium 有权
公开(公告)号：US10048613B2
公开(公告)日：2018-08-14
申请号：US14992936
申请日：2016-01-11
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： G03G15/043 , G03G15/00
摘要： A process of reducing a toner consumption amount is to be performed on a region within several tens of pixels from a rendering end. An excessive amount of toner is supplied from a toner supplying unit which faces a non-printing region of a photosensitive drum within several tens of pixels at most from an end portion of a printing region. Accordingly, if only contour pixels in the rendering end are processed by an existing processing system, the contour correction and the process of reducing a toner consumption amount may be simultaneously realized. A contour is calculated as a processing result of the existing processing system, and an existing process is performed on a contour portion. The process of reducing a toner consumption amount is performed on other portions.

3. 发明授权

US09268252B2 Image forming apparatus and method with additional exposure of photoreceptor drum based on cycle of screen 有权
标题翻译：基于屏幕循环的感光鼓附加曝光的图像形成装置和方法
公开(公告)号：US09268252B2
公开(公告)日：2016-02-23
申请号：US14680555
申请日：2015-04-07
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： H04N1/29 , H04N1/405 , H04N1/409 , G06K15/14 , G03G15/043 , G06K15/02 , H04N1/00
CPC分类号： G03G15/043 , G06K15/14 , G06K15/1881 , H04N1/00254 , H04N1/295 , H04N1/405 , H04N1/4055 , H04N1/409
摘要： An image forming apparatus applies a dither matrix to multi-valued image data. Then, the apparatus performs an exposure on a photoreceptor drum based on the image data obtained by using the applied dither matrix. In this process, the apparatus performs additional amount of exposure on the photoreceptor drum in a cycle equal to the cycle of the dither matrix, in addition to an amount of the exposure based on the obtained image data.
摘要翻译：图像形成装置将抖动矩阵应用于多值图像数据。然后，该装置基于通过使用所施加的抖动矩阵获得的图像数据在感光鼓上进行曝光。在该处理中，除了基于获得的图像数据的曝光量之外，该装置还以等于抖动矩阵的周期的周期在感光鼓上进行额外的曝光量。

4. 发明授权

US10180646B2 Image forming apparatus, method of controlling the same, and storage medium 有权
公开(公告)号：US10180646B2
公开(公告)日：2019-01-15
申请号：US15896623
申请日：2018-02-14
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： G03G15/00 , H04N1/409
摘要： An image forming apparatus obtains a number of pixels to be developed on a downstream side in a sub-scanning direction from each one of the predetermined pixels, in order to correct a density increase that occurs at the trailing edge of an image to be formed in accordance with a peripheral speed difference between a photosensitive drum and a developing roller, determines a correction amount of light amount for each one of the predetermined pixels in accordance with the obtained number of pixels, and generates image formation data.

5. 发明申请

US20160202628A1 IMAGE FORMING APPARATUS, PRINTING CONTROL METHOD OF THE SAME, AND STORAGE MEDIUM 审中-公开
标题翻译：图像形成装置，其印刷控制方法和存储介质
公开(公告)号：US20160202628A1
公开(公告)日：2016-07-14
申请号：US14992936
申请日：2016-01-11
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： G06F3/12
CPC分类号： G03G15/043 , G03G15/556
摘要： A process of reducing a toner consumption amount is to be performed on a region within several tens of pixels from a rendering end. An excessive amount of toner is supplied from a toner supplying unit which faces a non-printing region of a photosensitive drum within several tens of pixels at most from an end portion of a printing region. Accordingly, if only contour pixels in the rendering end are processed by an existing processing system, the contour correction and the process of reducing a toner consumption amount may be simultaneously realized. A contour is calculated as a processing result of the existing processing system, and an existing process is performed on a contour portion. The process of reducing a toner consumption amount is performed on other portions.
摘要翻译：从呈现端到数十个像素内的区域进行降低调色剂消耗量的处理。从打印区域的端部最多位于几十个像素内的从感光鼓的非打印区域的调色剂供给单元供给过量的调色剂。因此，如果现有处理系统仅处理渲染结束中的轮廓像素，则可以同时实现轮廓校正和减少调色剂消耗量的处理。轮廓被计算为现有处理系统的处理结果，并且在轮廓部分上执行现有处理。对其他部分进行降低调色剂消耗量的处理。

6. 发明授权

US09063450B2 Apparatus and method for performing exposure on photoreceptor drum 有权
标题翻译：在感光鼓上进行曝光的装置和方法
公开(公告)号：US09063450B2
公开(公告)日：2015-06-23
申请号：US14325607
申请日：2014-07-08
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： H04N1/46 , H04N1/60 , G06K9/00 , G03G15/01
CPC分类号： G03G15/011 , G03G21/08
摘要： In a case where a determination is made that a density of a pixel of interest is greater than a threshold, or in a case where a pixel having a greater density than the threshold is present in a neighborhood of the pixel of interest at a predetermined distance from the pixel of interest, exposure with intensity corresponding to a density of the pixel of interest to which a predetermined density has not been added is performed on a photoreceptor drum at a position corresponding to the pixel of interest. Otherwise, exposure with intensity corresponding to a density of the pixel of interest to which the predetermined density has been added is performed on the photoreceptor drum at the position corresponding to the pixel of interest.
摘要翻译：在确定感兴趣像素的浓度大于阈值的情况下，或者在具有比阈值更大的浓度的像素存在于预定距离的感兴趣像素的附近的情况下从感兴趣的像素，在与感兴趣像素对应的位置的感光鼓上执行与未被添加了预定浓度的感兴趣像素的浓度相对应的强度的曝光。否则，在与感兴趣像素对应的位置上的感光鼓上执行与已经添加了预定浓度的感兴趣像素的浓度相对应的强度的曝光。

7. 发明申请

US20150029519A1 APPARATUS AND METHOD FOR PERFORMING EXPOSURE ON PHOTORECEPTOR DRUM 有权
标题翻译：用于在光电转换器上进行曝光的装置和方法
公开(公告)号：US20150029519A1
公开(公告)日：2015-01-29
申请号：US14325607
申请日：2014-07-08
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Shoji
IPC分类号： G06F3/12
CPC分类号： G03G15/011 , G03G21/08
摘要： In a case where a determination is made that a density of a pixel of interest is greater than a threshold, or in a case where a pixel having a greater density than the threshold is present in a neighborhood of the pixel of interest at a predetermined distance from the pixel of interest, exposure with intensity corresponding to a density of the pixel of interest to which a predetermined density has not been added is performed on a photoreceptor drum at a position corresponding to the pixel of interest. Otherwise, exposure with intensity corresponding to a density of the pixel of interest to which the predetermined density has been added is performed on the photoreceptor drum at the position corresponding to the pixel of interest.
摘要翻译：在确定感兴趣像素的浓度大于阈值的情况下，或者在具有比阈值更大的浓度的像素存在于预定距离的感兴趣像素的附近的情况下从感兴趣的像素，在与感兴趣像素对应的位置的感光鼓上执行与未被添加了预定浓度的感兴趣像素的浓度相对应的强度的曝光。否则，在与感兴趣像素对应的位置上的感光鼓上执行与已经添加了预定浓度的感兴趣像素的浓度相对应的强度的曝光。

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