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1. 发明授权

US09568880B2 Sheet processing apparatus and image forming apparatus having binding processing function 有权
标题翻译：具有装订处理功能的纸张处理装置和图像形成装置
公开(公告)号：US09568880B2
公开(公告)日：2017-02-14
申请号：US14602230
申请日：2015-01-21
申请人： CANON KABUSHIKI KAISHA
发明人： Yoshitaka Yamazaki , Hiroshi Saito , Tetsuro Fukusaka , Shigemi Kumagai
IPC分类号： B65H37/04 , G03G15/00 , B42F3/00 , B31F5/02 , B42C1/00
CPC分类号： G03G15/6544 , B31F5/02 , B31F2201/0712 , B31F2201/0779 , B42C1/00 , B42F3/003 , B65H37/04 , B65H2301/43828 , B65H2301/51616 , B65H2801/27 , G03G15/5004 , G03G2215/00852
摘要： A sheet processing apparatus includes a binding unit configured to perform binding processing by pressing a sheet bundle, a motor configured to drive the binding unit to press the sheet bundle, and a motor control unit configured to set a driving current of the motor and an upper limit value of the driving current, the motor control unit being configured to set the driving current when starting activating the motor in a state where the binding unit is not pressing the sheet bundle to a first value, and set the upper limit value of the driving current in a period in which the binding unit is pressing the sheet bundle to a second value less than or equal to the first value.
摘要翻译：一种片材处理装置，包括：装订单元，其被构造成通过按压片材束进行装订处理;马达，被配置为驱动装订单元按压片材束;以及马达控制单元，其被配置为设定马达的驱动电流和上部驱动电流的极限值，所述电动机控制单元被配置为在所述装订单元未将所述纸张束按压到第一值的状态下启动所述电动机时设定所述驱动电流，并且设定所述驱动电流的上限值在装订单元将片材束压缩到小于或等于第一值的第二值的时间段内的电流。

2. 发明授权

US09988227B2 Sheet conveying apparatus and image forming apparatus 有权
公开(公告)号：US09988227B2
公开(公告)日：2018-06-05
申请号：US15479175
申请日：2017-04-04
申请人： CANON KABUSHIKI KAISHA
发明人： Shigemi Kumagai
IPC分类号： B65H9/00
CPC分类号： B65H9/006 , B65H5/062 , B65H7/02 , B65H2511/212 , B65H2513/512 , B65H2515/32 , B65H2515/704 , G03G15/6567 , B65H2220/01 , B65H2220/03 , B65H2220/02
摘要： A sheet conveying apparatus includes an abutment member against which a leading end of a sheet conveyed by a conveying roller abuts, a phase determiner that determines a rotation phase of a rotor of a motor driving the conveying roller, a controller that controls the motor by controlling the value of a torque current component and the value of an excitation current component so that a difference between an instruction phase and the rotation phase is decreased, and a torque determiner that determines load torque exerted on the rotor. The controller continues driving of the motor if the load torque is lower than predetermined torque in a state in which the leading end of the sheet abuts against the abutment member to deflect the sheet and stops the driving of the motor if the load torque is higher than or equal to the predetermined torque.

3. 发明申请

US20150203310A1 SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS HAVING BINDING PROCESSING FUNCTION 有权
标题翻译：具有结合处理功能的纸张加工设备和图像形成装置
公开(公告)号：US20150203310A1
公开(公告)日：2015-07-23
申请号：US14602230
申请日：2015-01-21
申请人： CANON KABUSHIKI KAISHA
发明人： Yoshitaka Yamazaki , Hiroshi Saito , Tetsuro Fukusaka , Shigemi Kumagai
IPC分类号： B65H7/20 , B65H39/00 , G03G15/00 , B65H37/04
CPC分类号： G03G15/6544 , B31F5/02 , B31F2201/0712 , B31F2201/0779 , B42C1/00 , B42F3/003 , B65H37/04 , B65H2301/43828 , B65H2301/51616 , B65H2801/27 , G03G15/5004 , G03G2215/00852
摘要： A sheet processing apparatus includes a binding unit configured to perform binding processing by pressing a sheet bundle, a motor configured to drive the binding unit to press the sheet bundle, and a motor control unit configured to set a driving current of the motor and an upper limit value of the driving current, the motor control unit being configured to set the driving current when starting activating the motor in a state where the binding unit is not pressing the sheet bundle to a first value, and set the upper limit value of the driving current in a period in which the binding unit is pressing the sheet bundle to a second value less than or equal to the first value.
摘要翻译：一种片材处理装置，包括：装订单元，其被构造成通过按压片材束进行装订处理;马达，被配置为驱动装订单元按压片材束;以及马达控制单元，其被配置为设定马达的驱动电流和上部驱动电流的极限值，所述电动机控制单元被配置为在所述装订单元未将所述纸张束按压到第一值的状态下启动所述电动机时设定所述驱动电流，并且设定所述驱动电流的上限值在装订单元将片材束压缩到小于或等于第一值的第二值的时间段内的电流。

4. 发明申请

US20200270083A1 SHEET CONVEYING APPARATUS 审中-公开
公开(公告)号：US20200270083A1
公开(公告)日：2020-08-27
申请号：US16778667
申请日：2020-01-31
申请人： CANON KABUSHIKI KAISHA
发明人： Kazuya Fukuda , Shigemi Kumagai
IPC分类号： B65H7/18 , B65H3/06
摘要： A sheet conveying apparatus includes a stacking unit, a feeding unit, a conveying path, a first conveying roller, a second conveying roller, a controller configured to execute first driving for executing a driving of the first conveying roller and a driving of the second conveying roller, a discriminator configured to determine a position of the sheet based on a value of a parameter corresponding to a load torque applied to a motor for driving a conveying roller driven during the first driving, and a storage unit configured to store information regarding the position.

5. 发明申请

US20170291783A1 SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS 有权
公开(公告)号：US20170291783A1
公开(公告)日：2017-10-12
申请号：US15479175
申请日：2017-04-04
申请人： CANON KABUSHIKI KAISHA
发明人： Shigemi Kumagai
IPC分类号： B65H9/00 , B65H7/00 , G03G15/00 , B65H5/06
CPC分类号： B65H9/006 , B65H5/062 , B65H7/02 , B65H2511/212 , B65H2513/512 , B65H2515/32 , B65H2515/704 , G03G15/6567 , B65H2220/01 , B65H2220/03 , B65H2220/02
摘要： A sheet conveying apparatus includes an abutment member against which a leading end of a sheet conveyed by a conveying roller abuts, a phase determiner that determines a rotation phase of a rotor of a motor driving the conveying roller, a controller that controls the motor by controlling the value of a torque current component and the value of an excitation current component so that a difference between an instruction phase and the rotation phase is decreased, and a torque determiner that determines load torque exerted on the rotor. The controller continues driving of the motor if the load torque is lower than predetermined torque in a state in which the leading end of the sheet abuts against the abutment member to deflect the sheet and stops the driving of the motor if the load torque is higher than or equal to the predetermined torque.

6. 发明授权

US09134647B2 Image forming apparatus that corrects developing bias voltage 有权
标题翻译：校正显影偏压的图像形成装置
公开(公告)号：US09134647B2
公开(公告)日：2015-09-15
申请号：US14246278
申请日：2014-04-07
申请人： CANON KABUSHIKI KAISHA
发明人： Tetsuro Fukusaka , Hiroshi Saito , Shigemi Kumagai , Yoshitaka Yamazaki
IPC分类号： G03G15/06 , G03G15/00
CPC分类号： G03G15/065 , G03G15/505
摘要： An image forming apparatus that reduces density irregularity caused by SD gap variation. A developing bias voltage for forming a developing electric field between a photosensitive drum and a developing sleeve is applied to the developing sleeve. A rotational period of the photosensitive drum is divided into a plurality of blocks, and current values are acquired for each block. An average value of the acquired current values for each block is stored until the photosensitive drum is rotated a predetermined number of times, for each of the predetermined number of times of rotation. A moving average value of the average values in each block is calculated, and a correction table for correcting the developing bias voltage to be applied in each block is created using the calculated moving average values, and the developing bias voltage is controlled based on the created correction table.
摘要翻译：一种降低由SD间隙变化引起的密度不均匀的图像形成装置。用于在感光鼓和显影套筒之间形成显影电场的显影偏压被施加到显影套筒。感光鼓的旋转周期被分成多个块，并且为每个块获取电流值。存储每个块的获取的电流值的平均值，直到感光鼓在预定次数的旋转中旋转预定次数为止。计算每个块中的平均值的移动平均值，并且使用所计算的移动平均值创建用于校正要在每个块中施加的显影偏压的修正表，并且基于所创建的显影偏压来控制显影偏压校正表。

7. 发明申请

US20220291617A1 IMAGE FORMING APPARATUS 有权
公开(公告)号：US20220291617A1
公开(公告)日：2022-09-15
申请号：US17684081
申请日：2022-03-01
申请人： CANON KABUSHIKI KAISHA
发明人： Shigemi Kumagai
IPC分类号： G03G15/00 , H02P6/18
摘要： An image forming apparatus includes a stacking unit, a pickup roller, a motor having a winding, a rotor, and a phase, an image forming unit, an operation unit, and a receiving unit. The motor drives the pickup roller to feed a recording medium stacked on the stacking unit. The image forming unit forms an image on the fed medium. A user operates the operation unit to set an image forming condition. When, in a state where the winding is not excited, the operation unit is operated before the receiving unit receives an instruction to start forming the image, an initial operation is executed in a rotor stop state that supplies current to the winding and determines the motor phase based on the current flowing through the winding. When the instruction is received after the initial operation, the winding receives current such that the rotor rotates based on the determined phase.

8. 发明授权

US10723574B2 Sheet conveyance apparatus, document feeding apparatus, document reading apparatus, and image forming apparatus 有权
公开(公告)号：US10723574B2
公开(公告)日：2020-07-28
申请号：US16218871
申请日：2018-12-13
申请人： CANON KABUSHIKI KAISHA
发明人： Toru Miyazawa , Shigemi Kumagai
IPC分类号： B65H3/06 , B65H7/06 , B65H7/12 , G03G15/00 , H04N1/00 , B65H5/06 , H02P6/08 , H02P27/08 , H02P21/22
摘要： A sheet conveyance apparatus includes a stacking unit having a sheet, a feeding unit, a conveyance roller to convey a sheet fed by the feeding unit, a motor to drive the conveyance roller, a phase determiner, first and second controllers, and a discriminator. The feeding unit feeds the sheet. The phase determiner determines a motor rotor rotational phase. The first controller controls a drive current flowing in a motor winding to reduce a deviation between an instructed phase of the motor rotor and the determined rotational phase. The second controller controls to perform a first drive for driving the conveyance roller for a predetermined time before a feeding unit feed operation is started. The discriminator discriminates presence or absence of the sheet at a nip portion of the conveyance roller based on a value of a parameter corresponding to load torque applied to the rotor during the first drive.

9. 发明申请

US20190218047A1 SHEET CONVEYANCE APPARATUS, DOCUMENT FEEDING APPARATUS, DOCUMENT READING APPARATUS, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190218047A1
公开(公告)日：2019-07-18
申请号：US16218871
申请日：2018-12-13
申请人： CANON KABUSHIKI KAISHA
发明人： Toru Miyazawa , Shigemi Kumagai
IPC分类号： B65H3/06 , G03G15/00 , H04N1/00
摘要： A sheet conveyance apparatus includes a stacking unit having a sheet, a feeding unit, a conveyance roller to convey a sheet fed by the feeding unit, a motor to drive the conveyance roller, a phase determiner, first and second controllers, and a discriminator. The feeding unit feeds the sheet. The phase determiner determines a motor rotor rotational phase. The first controller controls a drive current flowing in a motor winding to reduce a deviation between an instructed phase of the motor rotor and the determined rotational phase. The second controller controls to perform a first drive for driving the conveyance roller for a predetermined time before a feeding unit feed operation is started. The discriminator discriminates presence or absence of the sheet at a nip portion of the conveyance roller based on a value of a parameter corresponding to load torque applied to the rotor during the first drive.

10. 发明申请

US20140301749A1 IMAGE FORMING APPARATUS THAT CORRECTS DEVELOPING BIAS VOLTAGE 有权
标题翻译：图像形成装置，用于校正偏差电压
公开(公告)号：US20140301749A1
公开(公告)日：2014-10-09
申请号：US14246278
申请日：2014-04-07
申请人： CANON KABUSHIKI KAISHA
发明人： Tetsuro Fukusaka , Hiroshi Saito , Shigemi Kumagai , Yoshitaka Yamazaki
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G15/505
摘要： An image forming apparatus that reduces density irregularity caused by SD gap variation. A developing bias voltage for forming a developing electric field between a photosensitive drum and a developing sleeve is applied to the developing sleeve. A rotational period of the photosensitive drum is divided into a plurality of blocks, and current values are acquired for each block. An average value of the acquired current values for each block is stored until the photosensitive drum is rotated a predetermined number of times, for each of the predetermined number of times of rotation. A moving average value of the average values in each block is calculated, and a correction table for correcting the developing bias voltage to be applied in each block is created using the calculated moving average values, and the developing bias voltage is controlled based on the created correction table.
摘要翻译：一种降低由SD间隙变化引起的密度不均匀的图像形成装置。用于在感光鼓和显影套筒之间形成显影电场的显影偏压被施加到显影套筒。感光鼓的旋转周期被分成多个块，并且为每个块获取电流值。存储每个块的获取的电流值的平均值，直到感光鼓在预定次数的旋转中旋转预定次数为止。计算每个块中的平均值的移动平均值，并且使用所计算的移动平均值创建用于校正要在每个块中施加的显影偏压的修正表，并且基于所创建的显影偏压来控制显影偏压校正表。

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