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公开(公告)号：US12023914B2
公开(公告)日：2024-07-02
申请号：US17926662
申请日：2021-05-10
发明人： Naohiro Anan
CPC分类号： B41J11/42 , G03G15/1605
摘要： A belt suitable for detection of a meandering amount of the belt and detection of a reference position for one round of the belt is realized with a simple configuration. The recording device belt has a plurality of marks for belt position detection disposed in a transport direction of the belt. Each of the plurality of marks has: a first specific portion whose dimension in the transport direction differs depending on a position in an intersecting direction that intersects with the transport direction; and a second specific portion whose dimension in the transport direction is constant regardless of the position in the intersecting direction. The plurality of marks include a reference mark whose dimension in the transport direction of the second specific portion is different from that of the other marks in the plurality of marks.
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公开(公告)号：US09772491B2
公开(公告)日：2017-09-26
申请号：US15166077
申请日：2016-05-26
发明人： Haruki Shoji , Okito Ogasahara , Naohiro Anan
IPC分类号： G03G15/043 , G02B26/12 , G03G15/04 , G03G15/00 , G03G21/20
CPC分类号： G02B26/127 , G03G15/0409 , G03G15/55 , G03G21/20
摘要： An image forming apparatus includes a rotating polygon mirror, a motor, a bearing portion, a measurement processing portion, and a determination processing portion. The rotating polygon mirror causes a light beam emitted from the light source to be scanned. The motor rotates the rotating polygon mirror. The bearing portion rotatably supports a rotation shaft of the motor via a lubricant. The measurement processing portion measures a transition time that is a time required for the motor to transition from a stationary state to a driving state in which the motor rotates at a predetermined speed. The determination processing portion determines whether or not a maintenance is required, based on the transition time measured by the measurement processing portion.
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公开(公告)号：US08922845B2
公开(公告)日：2014-12-30
申请号：US13778237
申请日：2013-02-27
CPC分类号： H04N1/1008 , H04N1/40037
摘要： An image forming apparatus includes an exposing section, a pulse generating section, a frequency storing section, an emission control section, a smoothing section, and a driving-current generating section. The pulse generating section generates a periodic pulse signal indicating light amount of light beam emitted by a light source of the exposing section. The frequency storing section stores in advance a plurality of frequencies of the pulse signal. The emission control section selects, in the rendering of each main scanning line, any one of the plurality of frequencies and instructs the pulse generating section to generate the pulse signal having the selected frequency. The smoothing section smoothes the pulse signal generated by the pulse generating section according to the instruction of the emission control section and generates analog signal. The driving-current generating section generates driving current for the light source of the exposing section on the basis of the analog signal.
摘要翻译： 图像形成装置包括曝光部，脉冲发生部，频率存储部，发光控制部，平滑部以及驱动电流产生部。 脉冲产生部分产生表示由曝光部分的光源发射的光束的光量的周期性脉冲信号。 频率存储部预先存储脉冲信号的多个频率。 发射控制部分在每个主扫描线的渲染中选择多个频率中的任何一个，并指示脉冲发生部分产生具有选定频率的脉冲信号。 平滑部分根据发射控制部分的指令平滑由脉冲发生部分产生的脉冲信号，并产生模拟信号。 驱动电流产生部分基于模拟信号产生用于曝光部分的光源的驱动电流。
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公开(公告)号：US09880509B2
公开(公告)日：2018-01-30
申请号：US15166128
申请日：2016-05-26
发明人： Haruki Shoji , Okito Ogasahara , Naohiro Anan
CPC分类号： G03G21/0005 , G03G15/20 , G03G15/50 , G03G15/55 , G03G21/145
摘要： An image forming apparatus includes an image carrier, a motor, a cleaning portion, a measurement processing portion, and a cleaning control portion. The image carrier is configured to carry an electrostatic latent image. The motor is configured to rotate the image carrier. The cleaning portion is configured to clean the image carrier. The measurement processing portion is configured to measure a transition time that is a time required for the motor to transition from a stationary state to a driving state in which the motor rotates at a predetermined speed. The cleaning control portion is configured to control a cleaning time of the cleaning portion or whether or not to cause the cleaning portion to clean the image carrier.
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公开(公告)号：US09641111B2
公开(公告)日：2017-05-02
申请号：US14815063
申请日：2015-07-31
发明人： Naohiro Anan
摘要： A stepping motor driving device includes a table, a driving pulse control part, an interpolation number indicating part and a driving part. The table stores thinned data which is thinned from original data and designates a pulse width of a driving pulse relating to a slow-up control or a slow-down control of a stepping motor. The driving pulse control part sequentially reads the thinned data from the table at predetermined intervals, to interpolate the thinned data in accordance with a given interpolation number so as to generate interpolated data and to output the driving pulse with the pulse width designated by the thinned data or the interpolated data by sequentially using the thinned data and the interpolated date at predetermined intervals. The interpolation number indicating part indicates the interpolation number to the driving pulse control part. The driving part drives the stepping motor in accordance with the driving pulse.
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公开(公告)号：US20150145447A1
公开(公告)日：2015-05-28
申请号：US14554752
申请日：2014-11-26
发明人： Naohiro Anan
CPC分类号： G03G15/55 , G03G15/5004 , H02P6/08
摘要： A motor control device includes a motor device, a speed command section, and a load detecting section. The motor control device includes: a motor configured to drive a rotating body and output a speed notification signal having an oscillation frequency corresponding to a rotational speed of the rotating body; and a driver IC configured to control a rotational speed of the motor. The speed command section is provided outside the motor device and configured to output a speed command signal designating a rotational speed of the motor to the driver IC. The load detecting section is provided outside the motor device and configured to derive a phase difference between the speed command signal and the speed notification signal and detect a load on the motor based on the phase difference.
摘要翻译： 电动机控制装置包括电动机装置，速度指令部和负载检测部。 电动机控制装置包括：电动机，被配置为驱动旋转体并输出具有与旋转体的旋转速度对应的振荡频率的速度通知信号; 以及配置为控制电动机的转速的驱动器IC。 速度指令部设置在电动机装置的外部，构成为向驱动器IC输出指定电动机的转速的速度指令信号。 负载检测部设置在电动机装置的外部，构成为导出速度指令信号和速度通知信号之间的相位差，并根据相位差检测电动机的负荷。
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7.发明授权Image forming apparatus that stores change data to cope with events that are likely to affect image quality 有权存储改变数据以应对可能影响图像质量的事件的图像形成装置公开(公告)号：US08836742B2
公开(公告)日：2014-09-16
申请号：US13780427
申请日：2013-02-28
IPC分类号： B41J2/435 , B41J2/47 , G03G15/04 , G03G15/043
CPC分类号： G03G15/04 , G03G15/043
摘要： Image forming apparatus includes elements as follows. Light-amount storing section stores, in the main scanning line divided into a plurality of blocks, light amounts of a light beam irradiated on the blocks. Change-data storing section stores a plurality of change data items set in the vicinity of each of block boundaries of the plurality of blocks. The plurality of change data items are used to cope with each of a plurality of events that are likely to affect the image quality in the vicinity of the block boundary. Irradiation control section selects, out of the plurality of change data items, change data for coping with an event selected out of the plurality of events and instructs Pulse generating section to generate, in the vicinity of the block boundary, pulse signal from which analog signal indicating a change in a value represented by the selected change data is obtained.
摘要翻译： 图像形成装置包括如下元件。 光量存储部分在被划分成多个块的主扫描线中存储照射在块上的光束的光量。 变更数据存储部存储多个块的块边界附近设置的多个变更数据项。 多个改变数据项用于处理可能影响块边界附近的图像质量的多个事件中的每一个。 照射控制部分在多个改变数据项中选择改变用于应对从多个事件中选择的事件的数据，并指示脉冲发生部分在块边界附近产生脉冲信号，模拟信号 指示由所选择的改变数据表示的值的变化。
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公开(公告)号：US11161348B2
公开(公告)日：2021-11-02
申请号：US16931688
申请日：2020-07-17
发明人： Naohiro Anan
摘要： An ink jet recording apparatus is provided with a conveying unit, a drive roller controller and a discharge timing controller. The drive roller controller controls a rotation speed of a drive roller based on pulse signals output by an encoder and corresponding to an angular velocity of a driven roller and an actual outer diameter of the driven roller. The discharge timing controller controls an ink discharge timing based on signals obtained by attenuating multiple frequency components of a target frequency corresponding to a pulse number of the pulse signals output from the encoder during one turn of the driven roller in the pulse signals and an actual outer diameter of the driven roller.
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公开(公告)号：US09670017B2
公开(公告)日：2017-06-06
申请号：US15046376
申请日：2016-02-17
发明人： Naohiro Anan
IPC分类号： B65H5/34 , B65H5/06 , H02P6/06 , H02P29/032 , B65H7/14
CPC分类号： B65H5/06 , B65H5/062 , B65H7/14 , B65H2403/92 , B65H2511/33 , B65H2513/11 , B65H2515/704 , B65H2557/262 , H02P6/06 , H02P29/032 , B65H2220/01 , B65H2220/03 , B65H2220/02
摘要： A motor controller includes a drive control portion. The drive control portion is configured to: execute feedback control of a drive current to be supplied to a drive motor, by using an inputted control signal indicating a target rotation speed for the drive motor and a detection signal of a rotation speed detection portion configured to detect a rotation speed of the drive motor; control the drive current in a first control period in which the target rotation speed is changed, such that the drive current is equal to or less than a predetermined first upper limit; and control the drive current in a second control period in which the target rotation speed is constant, such that the drive current is equal to or less than a predetermined second upper limit less than the first upper limit.
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公开(公告)号：US09448519B2
公开(公告)日：2016-09-20
申请号：US14554752
申请日：2014-11-26
发明人： Naohiro Anan
CPC分类号： G03G15/55 , G03G15/5004 , H02P6/08
摘要： A motor control device includes a motor device, a speed command section, and a load detecting section. The motor control device includes: a motor configured to drive a rotating body and output a speed notification signal having an oscillation frequency corresponding to a rotational speed of the rotating body; and a driver IC configured to control a rotational speed of the motor. The speed command section is provided outside the motor device and configured to output a speed command signal designating a rotational speed of the motor to the driver IC. The load detecting section is provided outside the motor device and configured to derive a phase difference between the speed command signal and the speed notification signal and detect a load on the motor based on the phase difference.
摘要翻译： 电动机控制装置包括电动机装置，速度指令部和负载检测部。 电动机控制装置包括：电动机，被配置为驱动旋转体并输出具有与旋转体的旋转速度对应的振荡频率的速度通知信号; 以及配置为控制电动机的转速的驱动器IC。 速度指令部设置在电动机装置的外部，构成为向驱动器IC输出指定电动机的转速的速度指令信号。 负载检测部设置在电动机装置的外部，构成为导出速度指令信号和速度通知信号之间的相位差，并根据相位差检测电动机的负荷。
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