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1. 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

2. 发明专利

JP2009284324A Image forming device, image forming method, and program 有权
标题翻译：图像形成装置，图像形成方法和程序
公开(公告)号：JP2009284324A
公开(公告)日：2009-12-03
申请号：JP2008135609
申请日：2008-05-23
申请人： Canon Inc , キヤノン株式会社
发明人： MUTSUO TAE
IPC分类号： H04N1/387 , B41J5/30 , B41J29/00 , B41J29/38 , G06T1/00
CPC分类号： H04N1/4051
摘要： PROBLEM TO BE SOLVED: To provide an image forming device having a lighter processing load and capable of adding an additional signal to an appropriate position, and to provide an image forming method and a program. SOLUTION: The image forming device comprises: a halftone processing part for halftone-processing with a halftone processing cycle; and an additional signal addition-processing part 228 for adding the additional signal 232 to the halftone-processed image signal. Position information is acquired, which determines a relative position between the additional signal 232 and a halftone dot prepared so that the additional signal 232 added by the additional signal addition-processing part 228 does not overlap the halftone-processed halftone dot in a first image area accordance with a common multiple between the halftone processing cycle and a minimum interval of the added dot formed by the additional signal 232. The image forming device further comprises an additional candidate position calculation part 224 for continuously or repeatedly conducting an addition control processing of the additional signal 232 added by the additional signal addition-processing part 228 in the first image area on the basis of the acquired position information in a second image area accordance with the continuous common multiple. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有较轻处理负荷并且能够向适当位置添加附加信号的图像形成装置，并提供图像形成方法和程序。解决方案：图像形成装置包括：用半色调处理循环进行半色调处理的半色调处理部件; 以及用于将附加信号232添加到半色调处理的图像信号的附加信号加法处理部分228。获取位置信息，其确定附加信号232和准备的网点之间的相对位置，使得由附加信号添加处理部分228添加的附加信号232不与第一图像区域中的半色调处理的半色调点重叠根据半色调处理周期和由附加信号232形成的相加点的最小间隔之间的公倍数。图像形成装置还包括附加候选位置计算部224，用于连续地或重复进行附加的加法的附加控制处理基于所获取的位置信息，通过附加信号相加处理部分228在第一图像区域中添加的信号232，根据连续公共倍数在第二图像区域中。版权所有（C）2010，JPO＆INPIT

3. 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

4. 发明专利

JP2008164950A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2008164950A
公开(公告)日：2008-07-17
申请号：JP2006354554
申请日：2006-12-28
申请人： Canon Inc , キヤノン株式会社
发明人： MUTSUO TAE
IPC分类号： G03G21/00 , G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of lessening color shift in a subscanning direction by restraining torque variation during printing without providing a special mechanism for controlling torque in a driving system. SOLUTION: The image forming apparatus is equipped with an image forming means for forming a toner image on an image carrier 22, a primary transfer means for transferring the toner image formed on the image carrier onto a rotating endless belt, and a secondary transfer means 28 for transferring the toner image transferred onto the endless belt to sheet material, and is equipped with a control means for controlling the image forming means to form a required image in a printing area and also form an additional toner image out of the printing area so that the amount of toner between the image carrier and the endless belt may be equal to or above a predetermined value. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过在打印期间抑制转矩变化来减少副扫描方向上的色移的图像形成装置，而不需要提供用于控制驱动系统中的扭矩的特殊机构。解决方案：图像形成装置配备有用于在图像载体22上形成调色剂图像的图像形成装置，用于将形成在图像载体上的调色剂图像转印到旋转环形带上的一次转印装置，以及二次用于将转印到环形带上的调色剂图像转印到片材上的转印装置28，并且配备有用于控制图像形成装置以在打印区域中形成所需图像的控制装置，并且还从印刷中形成附加的调色剂图像使得图像载体和环形带之间的调色剂的量可以等于或高于预定值。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2011215340A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2011215340A
公开(公告)日：2011-10-27
申请号：JP2010082808
申请日：2010-03-31
申请人： Canon Inc , キヤノン株式会社
发明人： MUTSUO TAE , SAEKI TOMOYUKI , FUKUTANI TAKAYUKI , TAKAYAMA YUJI , OGAWA YUICHI
IPC分类号： G03G15/00 , B41J2/52 , G03G21/14 , G06T5/00 , H04N1/407
CPC分类号： G03G15/0131 , G03G15/5058 , G03G2215/00059 , G03G2215/00063 , G03G2215/0129 , G03G2215/0164
摘要： PROBLEM TO BE SOLVED: To ensure a high quality image by carrying out banding correction at a level determined according to variation of the density characteristic of the image forming apparatus.SOLUTION: In the image forming apparatus, a banding correction unit 307 acquires information about a cause of density variation that may occur in a sub-scanning direction of a rotation member, which is used for forming a toner image on an image carrier based on input image information and sets; and the level of the density correction, which is determined according to the density variation cause information is set based on the acquired information.
摘要翻译：要解决的问题：通过以根据图像形成装置的密度特性的变化确定的水平进行条带校正来确保高质量图像。解决方案：在图像形成装置中，条带校正单元307获取关于基于输入图像信息，设置用于在图像载体上形成调色剂图像的旋转构件的副扫描方向上可能发生的浓度变化的原因; 并且基于所获取的信息来设置根据密度变化原因信息确定的浓度校正的水平。

6. 发明专利

JP2011075664A Image forming apparatus and density unevenness detection method 有权
标题翻译：图像形成装置和密度不足检测方法
公开(公告)号：JP2011075664A
公开(公告)日：2011-04-14
申请号：JP2009224827
申请日：2009-09-29
申请人： Canon Inc , キヤノン株式会社
发明人： UCHIDATE HIKARU , SAEKI TOMOYUKI , MUTSUO TAE
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G15/0194 , G03G2215/00059 , G03G2215/0129
摘要： PROBLEM TO BE SOLVED: To accurately detect information relating to density unevenness even when a diameter of a light detection area of a light receiving element of an optical sensor is not sufficiently small compared to a length of one period of the density unevenness. SOLUTION: A plurality of test patches each including a dark and light image which has density unevenness of a predetermined period is formed, wherein the plurality of test patches are differentiated in phase difference relative to a phase of density unevenness induced by rotational unevenness occurring at a predetermined period in a motor for driving a photosensitive drum. Then, density information of the plurality of test patches is detected by a density sensor 41, and the phase of the density unevenness is obtained based on detection results (density information) of the plurality of test patches as well as based on a phase difference corresponding to a test patch whose density unevenness is a predetermined value in amplitude. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：即使当与密度不均匀的一个周期的长度相比，光学传感器的光接收元件的光检测区域的直径不够小时，也能精确地检测与浓度不均匀有关的信息。解决方案：形成多个测试片，每个测试片包括具有预定周期的浓度不均匀性的暗和亮图像，其中多个测试片相对于由旋转不均匀性引起的浓度不均匀的相位相差不同在用于驱动感光鼓的电动机中以预定周期发生。然后，通过密度传感器41检测多个测试块的密度信息，并且基于多个测试块的检测结果（密度信息）以及相应的相位差来获得浓度不均匀的相位涉及其浓度不均匀度为预定值的测试片。版权所有（C）2011，JPO＆INPIT

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