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1. 发明专利

JP2015011262A 画像形成装置审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2015011262A
公开(公告)日：2015-01-19
申请号：JP2013137957
申请日：2013-07-01
申请人：キヤノン株式会社 , Canon Inc
发明人： SAITO TETSUSHI , KUMAGAI SHIGEMI , FUKUSAKA TETSUO , YAMAZAKI YOSHITAKA
IPC分类号： G03G15/00 , G03G15/06 , G03G15/08
摘要：【課題】印刷中におけるS−Dギャップの変動に伴って発生する印刷画像の濃度ムラを適正かつ迅速に補正できる画像形成装置を提供する。【解決手段】画像形成装置300は、静電潜像を担持する感光ドラム1と、現像剤を担持する現像スリーブ3aと、現像スリーブ3aに現像バイアスを印加するAC高圧駆動回路201,DC高圧回路203と、感光ドラム1の回転位相を検出するHPセンサHPと、回転位相に同期してS−Dギャップを検出するAC電流検出回路204と、プリント前に検出されたギャップの変動が画像に及ぼす影響を解消する補正テーブルを作成する手段と、補正テーブルに基づいて現像バイアスを補正する手段と、制御手段としてのCPU208とを備え、CPU208は、プリント開始後に、検出される感光ドラム1の1周期分のギャップ変動の最大振幅を用いて補正テーブルを補正し、補正後の補正テーブルを用いて現像DCバイアスを補正させる。【選択図】図3A
摘要翻译：要解决的问题：提供能够适当且快速地校正由于打印期间SD间隙的波动而产生的打印图像的浓度不均匀的图像形成装置。解决方案：图像形成装置300包括：感光鼓1，用于携带静电潜像; 用于承载显影剂的显影套筒3a：用于向显影套筒3a施加显影偏压的AC高压驱动电路201和DC高电压电路203; 用于检测感光鼓1的旋转相位的HP传感器HP; 用于与旋转相位同步地检测S-D间隙的AC电流检测电路204; 用于创建用于解决打印之前检测到的间隙的波动对图像的影响的校正表的装置; 用于根据校正表纠正发展偏差的手段; 和作为控制装置的CPU208。 CPU 208通过使用在开始打印后要检测的感光鼓1的一个周期的间隙波动的最大幅度来校正校正表，并且通过使用校正的校正表来校正显影DC偏置。

2. 发明专利

JP2011190006A Sheet feeder and image forming apparatus 审中-公开
标题翻译：纸张进纸器和图像形成装置
公开(公告)号：JP2011190006A
公开(公告)日：2011-09-29
申请号：JP2010055679
申请日：2010-03-12
申请人： Canon Inc , キヤノン株式会社
发明人： FUKUSAKA TETSUO , MATSUMOTO YUZO , YAMAZAKI YOSHITAKA
IPC分类号： B65H7/12
CPC分类号： B65H7/20 , B65H7/02 , B65H2511/11 , B65H2511/20 , B65H2513/511 , B65H2553/82 , B65H2553/83 , B65H2801/06 , G03G15/703 , G03G2215/00548 , G03G2221/1675 , B65H2220/01 , B65H2220/03 , B65H2220/02
摘要： PROBLEM TO BE SOLVED: To provide a high-quality sheet feeder achieving a stable transport state by detecting multi feed of sheets over a wide range in a sheet transport direction; and an image forming apparatus with the sheet feeder.
SOLUTION: A CPU controls a multi feed detection sensor so that multi feed detection with respect to the sheets by the multi feed detection sensor are carried out at a plurality of transmission points P1-P5. The CPU sets the plurality of transmission points so as to cover the front end to the rear end of the sheets moved in the sheet transport direction, based on size information read from a storage section, and detection timing of sheet passage by a first horizontal path sensor. Thereby, the multi feed detection can be carried out to cover the front end to the rear end of the preceding sheet in the sheet transport direction, thereby also detecting connected multi feed that the following sheet is connectedly overlapped with the preceding sheet.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：通过在纸张传送方向上检测多个纸张的宽范围来提供实现稳定传送状态的高品质纸张供纸器; 以及具有片材进给器的图像形成装置。解决方案：CPU控制多进给检测传感器，使得通过多进给检测传感器的纸张的多次进给检测在多个传送点P1-P5处执行。 CPU基于从存储部读取的大小信息，设定多个传送点，以便覆盖沿纸张传送方向移动的纸张的前端到后端，并且通过第一水平路径检测纸张通过的检测定时传感器。因此，可以进行多次进给检测以覆盖在纸张输送方向上的前一页到后端，从而也检测连续的多次进给，使得后续的纸张与前一张纸张重叠。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2011162354A Sheet feeding apparatus and image forming apparatus 审中-公开
标题翻译：纸张进给装置和图像形成装置
公开(公告)号：JP2011162354A
公开(公告)日：2011-08-25
申请号：JP2010288432
申请日：2010-12-24
申请人： Canon Inc , キヤノン株式会社
发明人： MATSUMOTO YUZO , FUKUSAKA TETSUO , YAMAZAKI YOSHITAKA
IPC分类号： B65H1/18
摘要： PROBLEM TO BE SOLVED: To provide a sheet feeding apparatus, along with an image forming apparatus, that prevents a decline in productivity caused by the sheet feeding apparatus of an air feeding type, by detecting such a state that a feeding may become defective, before feeding and by eliminating an unnecessary feeding. SOLUTION: A sheet feeding apparatus includes: a rear end sheet surface detection sensor 140 for detecting a rear end side of a feeding direction of an uppermost sheet loaded in a sheet tray 12; a front end sheet surface detection sensor 141 for detecting a front end side of a feeding direction of an uppermost sheet; and a CPU 301. The CPU 301 limits a starting of a sheet feeding action of a feeding unit 29, when lifting the sheet tray 12 toward the feeding unit 29 and stopping at the predetermined position, in a case that the rear end sheet surface detection sensor 140 and the front end sheet surface detection sensor 141 do not detect a sheet at the same time. Then, the sheet feeding apparatus detects a state which a feeding may become defective before feeding, and eliminates an unnecessary feeding action. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种片材馈送装置以及图像形成装置，其通过检测馈送可能变成的状态来防止由空气馈送型的片材馈送装置引起的生产率下降有缺陷的，在进食前和消除不必要的进食。纸张进给装置包括：后端片材表面检测传感器140，用于检测装载在片材盘12中的最上层片材的进给方向的后端侧; 前端片材表面检测传感器141，用于检测最上面片材的进给方向的前端侧; 和CPU301.CPU301限制进纸单元29的送纸动作的开始，当纸张托盘12朝向进给单元29抬起并停止在预定位置时，在后端纸张表面检测传感器140和前端片材表面检测传感器141不会同时检测片材。然后，片材进给装置检测在进给之前进给可能变得有缺陷的状态，并且消除不必要的进给动作。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2009001392A Sheet feeder and image forming device 有权
标题翻译：纸张进纸器和图像形成装置
公开(公告)号：JP2009001392A
公开(公告)日：2009-01-08
申请号：JP2007164720
申请日：2007-06-22
申请人： Canon Inc , キヤノン株式会社
发明人： FUKUSAKA TETSUO , MATSUMOTO YUZO
IPC分类号： B65H3/12 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide a sheet feeder capable of consistently feeding sheets by reducing the load on a conveying motor for driving a conveying roller downstream of the sheet conveying direction from a sucking and conveying belt and preventing wrinkles of a sheet between the sucking and conveying belt and conveying roller. SOLUTION: The sheet feeder comprises a suction fan 101 for generating the negative pressure, a suction duct 100 connected to the suction fan 101 to keep the inside thereof in a negative pressure condition, a sucking and conveying belt 103 for sucking and conveying a sheet by the negative pressure in the suction duct 100, and a conveying roller 108 provided downstream of the sheet conveying direction from the sucking and conveying belt 103 to convey the sheet. After the sheet conveyed by the sucking and conveying belt 103 reaches the conveying roller 106, the timing from the turn-off of the supply of the negative pressure in the suction duct 100 by the suction fan 101 to the stop of the drive of the sucking and conveying belt 103 is changed according to the kind of the sheet to be conveyed. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过减少用于从输送带输送方向驱动输送辊的输送马达上的负荷来一致地输送纸张的纸张供给器，并且防止纸张之间的褶皱输送带和输送辊。
解决方案：片材进给器包括用于产生负压的吸入风扇101，连接到吸入风扇101以将其内部保持在负压状态的吸入管道100，用于吸入和输送的吸入和输送带103 吸入管道100中的负压片材，以及设置在从输送带103的输送方向下游侧输送片材的输送辊108。在由吸引传送带103输送的片材到达传送辊106之后，从抽吸风扇101将吸入管道100中的负压供应关闭到停止吸入驱动的时间并且输送带103根据要输送的片材的种类而改变。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2007104444A Image reading apparatus and contamination region display method 审中-公开
标题翻译：图像读取装置和污染区域显示方法
公开(公告)号：JP2007104444A
公开(公告)日：2007-04-19
申请号：JP2005293005
申请日：2005-10-05
申请人： Canon Inc , キヤノン株式会社
发明人： KAMEI MASABUMI , FUKUSAKA TETSUO , TOGASHI KAZUHIRO , ISHIDO KATSUHIRO , SOYA TAKASHI , MAKINO YUICHI , FUTAGAWA JIRO , TAKEDA SHOHEI , WAKAHARA SHINICHIRO
IPC分类号： H04N1/19 , G06T1/00 , H04N1/04 , H04N1/409
CPC分类号： H04N1/00002 , H04N1/00013 , H04N1/00018 , H04N1/00037 , H04N1/00047 , H04N1/0005 , H04N1/00063 , H04N1/00076 , H04N1/00795 , H04N1/00814 , H04N1/00824 , H04N1/00909 , H04N2201/0098
摘要： PROBLEM TO BE SOLVED: To provide an image reading apparatus and a contamination region display method that are capable of aiding a user when cleaning dusts and blots on a scanning glass. SOLUTION: The apparatus acquires scanning signals produced by receiving reflected light from a manuscript to convert the light into electric signals. By a light receiving means for receiving the reflected light from the manuscript, positions of contaminations on an optical-system path are detected based on the manuscript and the reflected light received between the light receiving means and the manuscript. When the contaminations have been detected in a manuscript scanning region, a message for promoting cleaning of the contamination generated region is displayed and besides an illuminating means for illuminating the manuscript is controlled so as to illuminate selectively the contamination detected region. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种在扫描玻璃上清洁灰尘和污渍时能够帮助用户的图像读取装置和污染区域显示方法。解决方案：该装置获取通过从原稿接收反射光而产生的扫描信号，以将光转换成电信号。通过用于从原稿接收反射光的光接收装置，基于在光接收装置和原稿之间接收的原稿和反射光来检测光学系统路径上的污染位置。当在原稿扫描区域中检测到污染物时，显示用于促进污染物产生区域的清洁的消息，并且除了用于照亮原稿的照明装置被控制以便选择性地照射污染检测区域。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2006174016A Image reading apparatus 审中-公开
标题翻译：图像阅读器
公开(公告)号：JP2006174016A
公开(公告)日：2006-06-29
申请号：JP2004362795
申请日：2004-12-15
申请人： Canon Inc , キヤノン株式会社
发明人： FUKUSAKA TETSUO
IPC分类号： H04N1/028 , H04N1/19
摘要： PROBLEM TO BE SOLVED: To provide a method of preventing deterioration in optical performance due to the warpage of a substrate for mounting a photoelectric conversion element in temperature rise in an image reading apparatus and reducing a radiation noise from the substrate by strengthening GND of the substrate.
SOLUTION: This apparatus has a restraining member abutting on a reading means and restraining the warpage of the reading means in a main scanning direction. The restraining member abuts on an electric substrate over the longitudinal direction of the electric substrate or main scanning direction of the image reading apparatus in a state where the restraining member is fixed on the case of the image reading apparatus. The abutting section of the restraining member in the electric substrate is one part of the GND pattern of the substrate and is a copper foil exposing section.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种防止由于在图像读取装置中温度升高而将光电转换元件安装的基板翘曲引起的光学性能劣化的方法，并通过强化GND降低来自基板的辐射噪声的基底。解决方案：该装置具有抵接在读取装置上的限制件并且限制读取装置在主扫描方向上的翘曲。在限制部件被固定在图像读取装置的壳体上的状态下，限制部件在电气基板的长度方向或图像读取装置的主扫描方向上抵接在电气基板上。电气基板中的限制部件的抵接部是基板的GND图案的一部分，是铜箔曝光部。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2006140577A Image reading apparatus 审中-公开
标题翻译：图像阅读器
公开(公告)号：JP2006140577A
公开(公告)日：2006-06-01
申请号：JP2004326265
申请日：2004-11-10
申请人： Canon Inc , キヤノン株式会社
发明人： WAKAHARA SHINICHIRO , TAKEDA SHOHEI , FUTAGAWA JIRO , MAKINO YUICHI , SOYA TAKASHI , KAMEI MASABUMI , FUKUSAKA TETSUO , ISHIDO KATSUHIRO , TOGASHI KAZUHIRO
IPC分类号： H04N1/04 , G03B27/62 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To provide an image reading apparatus for preventing the occurrence of image deterioration due to dispersion in the carrying, of a striped image due to application of a correction fluid not properly dried, and of dropping of a foreign material such as a needle of a stapler or a clip into the image reading apparatus. SOLUTION: A shutter is provided between a draft feeder the sheet guide of which has a sit and an image read unit, part of the shutter is formed with a transparent member, and the shutter is configured to be moved in interlocking with the movement of the image read unit, and the image reading apparatus is characterized in that when the image read unit moves to a skim-through unit, the transparent part of the shutter moves to the skim-through unit, and when the image read unit moves to an escape unit, the components other than the transparent part of the shutter move to the skim-through unit. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供一种图像读取装置，用于防止由于施加没有适当干燥的校正液引起的条纹图像中由于携带中的分散而导致的图像劣化的发生，以及异物的掉落例如缝合器的针或夹入图像读取装置中的夹子。解决方案：在具有座位的片材引导件和图像读取单元之间的进纸器之间设置有挡板，所述挡板的一部分形成有透明构件，并且所述挡板构造成与所述挡板相互移动图像读取单元的移动和图像读取装置的特征在于，当图像读取单元移动到透光单元时，快门的透明部分移动到透光单元，并且当图像读取单元移动到逃生单元，除了快门的透明部分之外的部件移动到脱模单元。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2004040312A Image reading apparatus and control method thereof, and image forming apparatus 审中-公开
公开(公告)号：JP2004040312A
公开(公告)日：2004-02-05
申请号：JP2002192175
申请日：2002-07-01
申请人： Canon Inc , キヤノン株式会社
发明人： FUKUSAKA TETSUO
IPC分类号： G03B27/50 , H04N1/00 , H04N1/04 , H04N1/10 , H04N1/107
摘要： PROBLEM TO BE SOLVED: To read an image at an optimum original scanning speed, when reading a double-sided original and when reading a single-sided image. SOLUTION: When reading a double-sided original, simultaneous reading of the double-sided images is performed at a process speed of an unmagnification optical system using a CIS (contact image sensor) with the CIS and a CCD (charge coupled device) sensor, and when reading a single-sided original, image reading is performed at a process speed of a contracted optical system, using the CCD sensor with the CCD sensor. Also, an incident light amount into the CCD is switched between, when reading the double-sided image original and when reading the single-sided image original. In that case, a storing time of photosensitive pixels of the CCD, a pixel reading speed and the gain of an amplifier circuit inside an analog signal processing unit are switched, depending on when reading the double-sided image original and when reading the single-sided image original, and illuminance of an original illumination means is switched further. COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2014202990A 画像形成装置审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2014202990A
公开(公告)日：2014-10-27
申请号：JP2013080387
申请日：2013-04-08
申请人：キヤノン株式会社 , Canon Inc
发明人： FUKUSAKA TETSUO
IPC分类号： G03G15/00 , G03G15/06 , G03G15/08 , G03G21/00
CPC分类号： G03G15/065 , G03G15/505
摘要：【課題】SDギャップ変動に起因する濃度ムラを抑制した画像形成装置を提供する。【解決手段】画像形成装置300は、像担持体が1回転する間に、検出された電流値を一定間隔でサンプリングする動作を、検出を開始するタイミングを変えて複数回実行して、複数回の各々の回ごとサンプリングされた電流値をし、記憶された電流値のうち、各々の回ごとにサンプリングされた電流値を補間することで、1回転する間の補間電流値を各々の回ごとに算出し、各々の回ごとに算出された1回転する間の補間電流値から、同位相での補間電流値の平均値を用いて、印加される現像バイアス電圧を補正するために作成された補正テーブルを用いて補正された現像バイアス電圧を用いて画像を形成する。【選択図】図14
摘要翻译：要解决的问题：提供一种图像形成装置，其中抑制由SD间隙变化引起的浓度不均匀性。解决方案：在图像形成装置300中，执行在图像载体的一圈内以固定间隔对检测电流进行采样的操作在改变检测开始定时的同时多次存储多个周期中的每一个中的采样电流值，并且在存储的当前值之内的每个周期中的采样电流值被内插以在每个周期内计算一个周期内的内插电流值旋转，然后通过使用通过使用通过使用与要施加的显影偏压相同的相位的内插电流值的平均值而产生的校正表来校正的显影偏压来形成图像。

10. 发明专利

JP2013166650A Sheet feeding device and image forming apparatus 有权
标题翻译：纸张进给装置和图像形成装置
公开(公告)号：JP2013166650A
公开(公告)日：2013-08-29
申请号：JP2012032552
申请日：2012-02-17
申请人： Canon Inc , キヤノン株式会社
发明人： FUKUSAKA TETSUO , YAMAZAKI YOSHITAKA , TOMII FUTOSHI
IPC分类号： B65H7/12 , B65H3/46 , G03G15/00
CPC分类号： B41J13/0009 , B65H3/128 , B65H5/24 , B65H7/125 , B65H2511/51 , B65H2511/52 , B65H2553/30 , B65H2220/02 , B65H2220/01
摘要： PROBLEM TO BE SOLVED: To provide a sheet feeding device and an image forming apparatus that are capable of accurately detecting a failure in a feeding state without erroneously detecting a normal feeding state of a sheet as a failure state when a trailing edge of a preceding sheet and a leading edge of a subsequent sheet are fed in an overlaid state.SOLUTION: A sheet feeding device includes: ultrasonic wave sensors 6 and 7 that detect an overlaid state of a preceding sheet Sa and a subsequent sheet Sb fed from feeding portions; and a controller that continuously performs a detection of the overlaid state of a sheet fed from the feeding portion at a predetermined number of detecting points along a sheet conveying direction at each predetermined time and determines the number of detecting points where an overlaid state is detected. Based on the determined number of detecting points, the controller determines that the overlaid state is normal when the number of detecting points is within a predetermined range where the number of detecting points is equal to or larger than a first number and equal to or smaller than a second number that is larger than the first number, but determines that the overlaid state is abnormal when the number of detecting points is outside the predetermined range.
摘要翻译：要解决的问题：提供一种片材馈送装置和图像形成装置，其能够在没有错误地检测到片材的正常馈送状态的情况下准确地检测馈送状态的故障，作为故障状态，当前一片材的后缘并且后续片材的前缘以重叠的状态进给。解决方案：片材进给装置包括：超声波传感器6和7，其检测从进料部分供给的前一片材Sa和随后的片材Sb的覆盖状态; 以及控制器，其在每个预定时间沿着纸张传送方向连续地执行在预定数量的检测点从进给部分馈送的纸张的重叠状态的检测，并且确定检测到重叠状态的检测点的数量。基于所确定的检测点的数量，当检测点的数量在检测点的数量等于或大于等于或等于或等于第一数量的预定范围内时，控制器确定重叠的状态是正常的大于第一数量的第二数字，但是当检测点的数量在预定范围之外时，确定叠加状态异常。

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