公开(公告)号：US20060083549A1

公开(公告)日：2006-04-20

申请号：US11020251

申请日：2004-12-27

申请人： Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Akira Hirota ,  Naotoshi Kawai ,  Kentaro Katori

发明人： Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Akira Hirota ,  Naotoshi Kawai ,  Kentaro Katori

IPC分类号： G03G15/22

CPC分类号： G03G21/0064 ,  G03G2215/0119

摘要： It is intended to provide an image forming apparatus capable of conducting charge adjustment of post-transfer residual toner appropriately by securing a contact area of a temporarily-collecting member and an electrode, without applying excessive deformation load to the temporarily-collecting member. There are arranged a brush roller for temporarily collecting post-transfer residual toner, and an electrode of which inwardly-curved face being in contact with the brush roller in a toner charge apparatus. Thereby, charged-in-opposite-polarity toner, out of post-transfer residual toner, is collected by the brush roller, polarity of the toner is reversed to original polarity, and then, returned to a photosensitive drum. The inner face of the electrode, i.e., a contact face of the electrode and the brush roller is formed in an inwardly-curved face. Thereby, a large contact area and light pushing force of the electrode to the brush roller can go together.

摘要翻译： 旨在提供一种图像形成装置，其能够通过确保临时收集构件和电极的接触面积而适当地进行后转印残留调色剂的电荷调节，而不对临时收集构件施加过大的变形负荷。 布置有用于临时收集转印后残留调色剂的刷辊，以及在调色剂充电装置中与刷辊接触的向内弯曲面的电极。 由此，转印后的残留调色剂中的带电的相反极性调色剂由刷辊收集，调色剂的极性反转到原始极性，然后返回到感光鼓。 电极的内表面，即电极和刷辊的接触面形成为向内弯曲的面。 因此，电极对刷辊的大的接触面积和轻推力可以一起走。

公开(公告)号：US07197264B2

公开(公告)日：2007-03-27

申请号：US11020251

申请日：2004-12-27

申请人： Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Akira Hirota ,  Naotoshi Kawai ,  Kentaro Katori

发明人： Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Akira Hirota ,  Naotoshi Kawai ,  Kentaro Katori

IPC分类号： G03G15/30

CPC分类号： G03G21/0064 ,  G03G2215/0119

摘要： It is intended to provide an image forming apparatus capable of conducting charge adjustment of post-transfer residual toner appropriately by securing a contact area of a temporarily-collecting member and an electrode, without applying excessive deformation load to the temporarily-collecting member. There are arranged a brush roller for temporarily collecting post-transfer residual toner, and an electrode of which inwardly-curved face being in contact with the brush roller in a toner charge apparatus. Thereby, charged-in-opposite-polarity toner, out of post-transfer residual toner, is collected by the brush roller, polarity of the toner is reversed to original polarity, and then, returned to a photosensitive drum. The inner face of the electrode, i.e., a contact face of the electrode and the brush roller is formed in an inwardly-curved face. Thereby, a large contact area and light pushing force of the electrode to the brush roller can go together.

摘要翻译： 旨在提供一种图像形成装置，其能够通过确保临时收集构件和电极的接触面积而适当地进行后转印残留调色剂的电荷调节，而不对临时收集构件施加过大的变形负荷。 布置有用于临时收集转印后残留调色剂的刷辊，以及在调色剂充电装置中与刷辊接触的向内弯曲面的电极。 由此，转印后的残留调色剂中的带电的相反极性调色剂由刷辊收集，调色剂的极性反转到原始极性，然后返回到感光鼓。 电极的内表面，即电极和刷辊的接触面形成为向内弯曲的面。 因此，电极对刷辊的大的接触面积和轻推力可以一起走。

公开(公告)号：US07324776B2

公开(公告)日：2008-01-29

申请号：US11028746

申请日：2005-01-05

申请人： Akira Hirota ,  Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Naotoshi Kawai ,  Kentaro Katori

发明人： Akira Hirota ,  Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Naotoshi Kawai ,  Kentaro Katori

IPC分类号： G03G21/00

CPC分类号： G03G21/0064

摘要： A color printer including, a conductive brush roller to contact a photosensitive drum at a position downstream of a transferring apparatus and upstream of a charging apparatus, wherein at least part of residual toner is collected after temporarily transferring on the photosensitive drum, and the collected toner is expelled onto the photosensitive drum, a charge electrode facing the brush roller at a position other than the contact position of the photosensitive drum and the brush roller, and a power source to apply voltage to the charge electrode, wherein the polarity of the voltage applied from the power source to the charge electrode with respect to the average voltage of the surface of the photosensitive drum after transferring is the same as a charging polarity of the toner at developing.

摘要翻译： 一种彩色打印机，包括：导电刷辊，用于在转印装置的下游位置和充电装置的上游接触感光鼓，其中至少部分残留调色剂在感光鼓上暂时转印后收集，并且收集的调色剂 被排出到感光鼓上，在除了感光鼓和刷辊的接触位置之外的位置处的面向刷辊的充电电极以及向充电电极施加电压的电源，其中施加的电压的极性 相对于转印后的感光鼓表面的平均电压，从电源到充电电极与显影时的调色剂的充电极性相同。

公开(公告)号：US20060083548A1

公开(公告)日：2006-04-20

申请号：US11028746

申请日：2005-01-05

申请人： Akira Hirota ,  Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Naotoshi Kawai ,  Kentaro Katori

发明人： Akira Hirota ,  Hiroaki Umemoto ,  Noritoshi Hagimoto ,  Kuniya Matsuura ,  Naotoshi Kawai ,  Kentaro Katori

IPC分类号： G03G21/00

CPC分类号： G03G21/0064

摘要： The color printer of the invention comprises a conductive brush roller contacting with a photosensitive drum at a position downstream of a transferring apparatus and upstream of a charging apparatus, collecting at least part of residual toner after transferring on the photosensitive drum temporarily, and expelling the collected toner onto the photosensitive drum, a charge electrode facing the brush roller at a position other than the contact position of the photosensitive drum and brush roller, and a power source for applying voltage to the charge electrode. The polarity of the voltage applied from the power source to the charge electrode with respect to the average voltage of the surface of the photosensitive drum after transferring is the same as a charging polarity of the toner at developing.

摘要翻译： 本发明的彩色打印机包括一个与感光鼓接触的导电刷辊，在转印装置的下游位置和充电装置的上游，在传感器上暂时收集至少部分残留的调色剂，并将收集的 调色剂到感光鼓上，在除了感光鼓和刷辊的接触位置之外的位置处的面向刷辊的充电电极和用于向充电电极施加电压的电源。 相对于转印后的感光鼓的表面的平均电压，从电源向充电电极施加的电压的极性与显影时的调色剂的充电极性相同。

公开(公告)号：US07092649B2

公开(公告)日：2006-08-15

申请号：US10923872

申请日：2004-08-24

申请人： Akira Hirota ,  Kentaro Katori ,  Masahiko Matsuura

发明人： Akira Hirota ,  Kentaro Katori ,  Masahiko Matsuura

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G2215/0119

摘要： An image forming apparatus has a charging member opposed to an outer circumferential surface of a rotating object to be charged. The image forming apparatus has a voltage applying section for applying a pulsating voltage Vsp between the charging member and the object to be charged. The pulsating voltage Vsp is obtained by superimposing a voltage component of a direct current on a voltage component that periodically changes. The image forming apparatus is made to satisfy a relation of Vpp≦|Vth|, where Vpp is a peak-to-peak voltage value of the pulsating voltage Vsp and Vth is a charging start voltage value of the object to be charged. The relation prevents opposite charge from being imparted to residual toner on the object to be charged.

摘要翻译： 图像形成装置具有与被充电的旋转体的外周面相对的充电部件。 图像形成装置具有用于在充电部件和被充电对象之间施加脉动电压Vsp的电压施加部。 通过将直流电压分量叠加在周期性变化的电压分量上来获得脉动电压Vsp。 使图像形成装置满足Vpp <= | Vth |的关系，其中Vpp是脉动电压Vsp的峰 - 峰值电压值，Vth是待充电对象的充电开始电压值。 该关系防止相反的电荷被赋予待充电物体上的残留调色剂。

公开(公告)号：US20050220470A1

公开(公告)日：2005-10-06

申请号：US10923872

申请日：2004-08-24

申请人： Akira Hirota ,  Kentaro Katori ,  Masahiko Matsuura

发明人： Akira Hirota ,  Kentaro Katori ,  Masahiko Matsuura

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G2215/0119

摘要： An image forming apparatus has a charging member opposed to an outer circumferential surface of a rotating object to be charged. The image forming apparatus has a voltage applying section for applying a pulsating voltage Vsp between the charging member and the object to be charged. The pulsating voltage Vsp is obtained by superimposing a voltage component of a direct current on a voltage component that periodically changes. The image forming apparatus is made to satisfy a relation of Vpp≦|Vth|, where Vpp is a peak-to-peak voltage value of the pulsating voltage Vsp and Vth is a charging start voltage value of the object to be charged. The relation prevents opposite charge from being imparted to residual toner on the object to be charged.

摘要翻译： 图像形成装置具有与被充电的旋转体的外周面相对的充电部件。 图像形成装置具有用于在充电部件和被充电对象之间施加脉动电压Vsp的电压施加部。 通过将直流电压分量叠加在周期性变化的电压分量上来获得脉动电压Vsp。 使图像形成装置满足Vpp <= | Vth |的关系，其中Vpp是脉动电压Vsp的峰 - 峰值电压值，Vth是待充电对象的充电开始电压值。 该关系防止相反的电荷被赋予待充电物体上的残留调色剂。

公开(公告)号：US5911097A

公开(公告)日：1999-06-08

申请号：US42670

申请日：1998-03-17

申请人： Masayasu Haga ,  Tsugihito Yoshiyama ,  Yasuhiro Nakagami ,  Masami Matsuura ,  Akira Hirota

发明人： Masayasu Haga ,  Tsugihito Yoshiyama ,  Yasuhiro Nakagami ,  Masami Matsuura ,  Akira Hirota

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0266 ,  G03G15/0291 ,  G03G2215/021 ,  Y10S430/102

摘要： Applied voltage to the contact charging sheet 71 has been controlled in the following various ways: a) the voltage at the photosensitive layer 10 at a point of time whereat it has passed the contact charging sheet 71 is caused to interlock with grid voltage so as not to exceed predetermined voltage to be electrified by the Scorotron charger 2; b) the applied voltage is caused to interlock with the output from the transfer unit 5 so that there is no portion which reaches the Scorotron charger 2 while the potential polarity has been reversed at the transfer unit 5; c) reduction in the film thickness of the photosensitive layer 10 is corrected in consideration of the cumulative number of sheets for image formation; d) the size of printing sheet is added; e) at the time of termination, a portion of the photosensitive layer 10, into which current has flowed at the transfer unit 5, is caused to stop always after passing the contact charging sheet 71; f) the contact charging sheet 71 is cleaned by means of AC component; and g) the applied voltage is switched while formation of an electrostatic latent image and the like are not performed. Thereby, the surface potential at the photosensitive drum 1 is prevented from becoming ununiform.

摘要翻译： 接触充电片71的施加电压已经以下列各种方式进行了控制：a）使感光层10在已经通过接触充电片71的时间点处的电压与电网电压互锁，使得不 超过预定电压由Scorotron充电器2带电; b）使施加的电压与转印单元5的输出互锁，使得在转印单元5处的电位极性已经反转的情况下，没有到达Scorotron充电器2的部分; c）考虑到用于图像形成的片材的累积数量来校正感光层10的膜厚度的减小; d）添加打印纸的尺寸; e）在终止时，使电流在转印单元5处流动的感光层10的一部分在通过接触充电片71之后始终停止; f）接触充电片71通过AC部件清洁; 并且g）在不形成静电潜像等的情况下切换所施加的电压。 由此，能够防止感光鼓1的表面电位变得不均匀。

公开(公告)号：US4587576A

公开(公告)日：1986-05-06

申请号：US534638

申请日：1983-09-22

申请人： Akira Hirota ,  Yutaka Ichinoi

发明人： Akira Hirota ,  Yutaka Ichinoi

IPC分类号： H04N5/93 ,  G11B20/06 ,  H04N5/922 ,  H04N5/923 ,  H04N5/782

CPC分类号： H04N5/923

摘要： Video signal processing apparatus for processing video signals in which pre-emphasis of high frequency components of signals to be recorded is effected, and de-emphasis of high frequency components of reproduced signals is carried out. The pre-emphasis circuitry and de-emphasis circuitry is of the so called forward and backward type for weighting video signals inputted at past and future time frames.

摘要翻译： 用于处理视频信号的视频信号处理装置，其中进行要记录的信号的高频分量的预加重，并且执行再现信号的高频分量的去加重。 预加重电路和去加重电路是所谓的前向和后向类型，用于加权在过去和未来时间帧输入的视频信号。

公开(公告)号：US4476501A

公开(公告)日：1984-10-09

申请号：US356484

申请日：1982-03-09

申请人： Akira Hirota ,  Yoshihiko Ota

发明人： Akira Hirota ,  Yoshihiko Ota

IPC分类号： H04N5/928 ,  G11B15/14 ,  G11B20/02 ,  H04N9/835 ,  H04N5/782

CPC分类号： H04N9/8355 ,  G11B15/14 ,  G11B20/02

摘要： An audio signal recording and reproducing system in an apparatus for recording and reproducing a video signal with respect to a recording medium by one or a plurality of rotary heads, comprises a first delay circuit for delaying an input recording audio signal by a predetermined time interval, a multiplexing circuit for multiplexing a non-delayed signal which is the input recording audio signal and an output delayed audio signal of the first delay circuit, to obtain a multiplexed audio signal for recording, a recording and reproducing circuit for multiplexing the video signal and the multiplexed audio signal for recording thus obtained, to perform recording and reproduction of the multiplexed signal with respect to the recording medium by the one or a plurality of rotary heads, a reproduced video signal obtaining circuit for separating the video signal from a signal reproduced by the recording and reproducing circuit, to obtain a reproduced video signal, a separating circuit for separating the non-delayed audio signal and the delayed audio signal of the multiplexed audio signal from the signal reproduced by the recording and reproducing circuit, a second delay circuit for delaying the separated non-delayed audio signal by a delay time equal to the delay time of the first delay circuit, and a switching circuit for alternately switching the separated delayed audio signal and an output delayed audio signal of the second delay circuit, to produce a continuous reproduced audio signal.

摘要翻译： 一种用于通过一个或多个旋转磁头记录和再现关于记录介质的视频信号的装置中的音频信号记录和再现系统，包括用于将输入记录音频信号延迟预定时间间隔的第一延迟电路， 用于多路复用作为输入记录音频信号的非延迟信号和第一延迟电路的输出延迟音频信号的多路复用电路，以获得用于记录的多路复用音频信号，用于复用视频信号和 复用的音频信号用于由此获得的记录，以通过一个或多个旋转磁头执行相对于记录介质的复用信号的记录和再现;再现视频信号获取电路，用于将视频信号与由 记录和再现电路，以获得再现的视频信号，用于分离的分离电路 从由记录和再现电路再现的信号中提取多路复用音频信号的非延迟音频信号和延迟音频信号;第二延迟电路，用于将分离的非延迟音频信号延迟等于延迟时间的延迟时间 以及用于交替地切换分离的延迟音频信号和第二延迟电路的输出延迟音频信号的开关电路，以产生连续再现的音频信号。

公开(公告)号：US4402022A

公开(公告)日：1983-08-30

申请号：US225006

申请日：1981-01-14

申请人： Akira Hirota ,  Seisuke Hiraguri

发明人： Akira Hirota ,  Seisuke Hiraguri

IPC分类号： G05D3/12 ,  G11B5/588 ,  G11B15/60 ,  G11B21/10

CPC分类号： G11B15/602 ,  G11B5/588

摘要： A tracking control system is used in a magnetic reproducing apparatus which comprises a rotary magnetic head for successively reproducing recorded signals from parallel tracks existing obliquely with respect to the longitudinal direction of a magnetic tape. The tracking system comprises a head swinging mechanism for varying the height position of the rotary magnetic head, and swinging the tracing position of the rotary magnetic head with respect to the track of the magnetic tape in the width direction of the track, a head swinging voltage generating circuit for generating a head swinging voltage, one or a plurality of memories for sampling and memorizing a voltage which is to be supplied to the head swinging means, at a point in time corresponding to when the rotary magnetic head passes one or a plurality of predetermined relative tracing positions respective of the magnetic tape, a level detecting circuit for detecting the level of a signal reproduced by the rotary magnetic head at a point in time identical to that of the above, a maximum level detecting circuit for detecting whether the level detected by the level detecting circuit has reached a maximum, a control circuit for enabling the reading-out of the voltage memorized in the memory upon detection of the maximum level by the maximum level detecting circuit, and an adding circuit for adding the voltage read out from the memory and the head swinging voltage supplied from the head swinging voltage generating circuit, and supplying the added voltage to the head swinging mechanism.

摘要翻译： 在磁性重放装置中使用跟踪控制系统，其包括用于从相对于磁带的纵向倾斜地存在的平行轨迹连续地再现记录信号的旋转磁头。 跟踪系统包括头摆动机构，用于改变旋转磁头的高度位置，并使旋转磁头的跟踪位置相对于磁带在轨道的宽度方向上的轨道摆动，磁头摆动电压 用于产生磁头摆动电压的发生电路，一个或多个存储器，用于在与旋转磁头通过一个或多个磁头的情况相对应的时间点对要提供给磁头摆动装置的电压进行采样和存储 用于检测在与上述相同的时间点由旋转磁头再现的信号的电平的电平检测电路，用于检测是否检测到电平的最大电平检测电路 通过电平检测电路达到最大值的控制电路，用于使能读出备忘录中存储的电压 通过最大电平检测电路检测到最大电平，并且添加电路，用于将从存储器读出的电压和从磁头摆动电压产生电路提供的磁头摆动电压相加，并将加上的电压提供给磁头摆动 机制。