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1. 发明授权

US07548708B2 Power supply unit in image forming apparatus 有权
标题翻译：图像形成装置中的电源单元
公开(公告)号：US07548708B2
公开(公告)日：2009-06-16
申请号：US11275634
申请日：2006-01-20
申请人： Osamu Nagasaki , Atsuhiko Yamaguchi , Tomohiro Nakamori , Takehiro Uchiyama , Kouji Yasukawa , Teruhiko Namiki , Hiroki Murata
发明人： Osamu Nagasaki , Atsuhiko Yamaguchi , Tomohiro Nakamori , Takehiro Uchiyama , Kouji Yasukawa , Teruhiko Namiki , Hiroki Murata
IPC分类号： G03G15/00 , H01L41/00
CPC分类号： G03G15/80
摘要： A power supply unit in an image forming apparatus is provided. The power supply unit includes a piezoelectric transformer, an output voltage detecting circuit which detects the output voltage of the piezoelectric transformer, an output voltage control circuit which controls an output voltage from the piezoelectric transformer, and includes a comparator which receives an output voltage setting signal, together with an output voltage detecting signal fed back from the output voltage detecting circuit, to compare the output voltage setting signal and the output voltage detecting signal. The power supply unit also includes a driving frequency supplying circuit which generates a driving frequency signal of the piezoelectric transformer in accordance with a comparison result by the comparator, and supplies the driving frequency signal to the piezoelectric transformer. The time constant of the output voltage control circuit is longer than the time constant of the output voltage detecting circuit.
摘要翻译：提供了图像形成装置中的电源单元。电源单元包括压电变压器，检测压电变压器的输出电压的输出电压检测电路，控制来自压电变压器的输出电压的输出电压控制电路，并包括接收输出电压设定信号的比较器与从输出电压检测电路反馈的输出电压检测信号一起比较输出电压设定信号和输出电压检测信号。电源单元还包括驱动频率提供电路，其根据比较器的比较结果产生压电变压器的驱动频率信号，并将驱动频率信号提供给压电变压器。输出电压控制电路的时间常数大于输出电压检测电路的时间常数。

2. 发明授权

US07425789B2 Power supply apparatus, and image forming apparatus having the same 有权
标题翻译：电源装置和具有该电源装置的图像形成装置
公开(公告)号：US07425789B2
公开(公告)日：2008-09-16
申请号：US11275636
申请日：2006-01-20
申请人： Kouji Yasukawa , Hiroshi Mano , Atsuhiko Yamaguchi , Osamu Nagasaki
发明人： Kouji Yasukawa , Hiroshi Mano , Atsuhiko Yamaguchi , Osamu Nagasaki
IPC分类号： H01L41/107
CPC分类号： H01L41/044 , G03G15/80
摘要： A power supply apparatus includes a piezoelectric transformer which outputs a voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and applies a power supply voltage to the piezoelectric transformer, and an output voltage stop circuit (118) which outputs a signal for stopping driving the piezoelectric transformer on the basis of a control signal (Vcont).
摘要翻译：电源装置包括输出电压的压电变压器，根据输入控制信号控制输出信号的频率的压控振荡器，由从电压输出的信号驱动的电源电压供给元件控制振荡器，并向压电变压器施加电源电压;以及输出电压停止电路（118），其基于控制信号（Vcont）输出用于停止驱动压电变压器的信号。

3. 发明申请

US20070200455A1 POWER SUPPLY APPARATUS, AND IMAGE FORMING APPARATUS HAVING THE SAME 有权
标题翻译：电源装置和具有该电源装置的图像形成装置
公开(公告)号：US20070200455A1
公开(公告)日：2007-08-30
申请号：US11677397
申请日：2007-02-21
申请人： ATSUHIKO YAMAGUCHI
发明人： ATSUHIKO YAMAGUCHI
IPC分类号： H01L41/107
CPC分类号： H01L41/044 , G03G15/5004 , H01L41/107 , H02M1/44 , H02M3/28 , H02M2001/008
摘要： A power supply apparatus with a plurality of power supply circuits each having a piezoelectric transformer and a voltage-controlled oscillator which generates a signal at an operating frequency used to drive the piezoelectric transformer in accordance with a control signal, includes a frequency-dividing circuit which divides the operating frequency generated by a voltage-controlled oscillator in at least one power supply circuit, and outputs a signal at a driving frequency to drive a piezoelectric transformer in the one power supply circuit. When at least one power supply circuit and remaining power supply circuits output voltages, the operating frequency generated by the voltage-controlled oscillator in the one power supply circuit is controlled to be higher than the driving frequency.
摘要翻译：一种电源装置，具有多个电源电路，每个电源电路具有压电变压器和压控振荡器，该电压控制振荡器根据控制信号产生用于驱动压电变压器的工作频率的信号，包括分频电路，在至少一个电源电路中分压由压控振荡器产生的工作频率，并以驱动频率输出驱动一个电源电路中的压电变压器的信号。当至少一个电源电路和剩余电源电路输出电压时，由一个电源电路中的压控振荡器产生的工作频率被控制为高于驱动频率。

4. 再颁专利

USRE45555E1 Power supply apparatus, and image forming apparatus having the same 有权
公开(公告)号：USRE45555E1
公开(公告)日：2015-06-09
申请号：US13175149
申请日：2011-07-01
申请人： Atsuhiko Yamaguchi
发明人： Atsuhiko Yamaguchi
IPC分类号： H01L41/107 , H01L41/04
CPC分类号： H01L41/044 , G03G15/5004 , H01L41/107 , H02M1/44 , H02M3/28 , H02M2001/008
摘要： A power supply apparatus with a plurality of power supply circuits each having a piezoelectric transformer and a voltage-controlled oscillator which generates a signal at an operating frequency used to drive the piezoelectric transformer in accordance with a control signal, includes a frequency-dividing circuit which divides the operating frequency generated by a voltage-controlled oscillator in at least one power supply circuit, and outputs a signal at a driving frequency to drive a piezoelectric transformer in the one power supply circuit. When at least one power supply circuit and remaining power supply circuits output voltages, the operating frequency generated by the voltage-controlled oscillator in the one power supply circuit is controlled to be higher than the operating frequency generated by the voltage-controlled oscillator in another power supply circuit.

5. 发明授权

US07557488B2 Power supply apparatus, and image forming apparatus having the same 有权
标题翻译：电源装置和具有该电源装置的图像形成装置
公开(公告)号：US07557488B2
公开(公告)日：2009-07-07
申请号：US11677397
申请日：2007-02-21
申请人： Atsuhiko Yamaguchi
发明人： Atsuhiko Yamaguchi
IPC分类号： H01L41/107
CPC分类号： H01L41/044 , G03G15/5004 , H01L41/107 , H02M1/44 , H02M3/28 , H02M2001/008
摘要： A power supply apparatus with a plurality of power supply circuits each having a piezoelectric transformer and a voltage-controlled oscillator which generates a signal at an operating frequency used to drive the piezoelectric transformer in accordance with a control signal, includes a frequency-dividing circuit which divides the operating frequency generated by a voltage-controlled oscillator in at least one power supply circuit, and outputs a signal at a driving frequency to drive a piezoelectric transformer in the one power supply circuit. When at least one power supply circuit and remaining power supply circuits output voltages, the operating frequency generated by the voltage-controlled oscillator in the one power supply circuit is controlled to be higher than the operating frequency generated by the voltage-controlled oscillator in another power supply circuit.
摘要翻译：一种电源装置，具有多个电源电路，每个电源电路具有压电变压器和压控振荡器，该电压控制振荡器根据控制信号产生用于驱动压电变压器的工作频率的信号，包括分频电路，在至少一个电源电路中分压由压控振荡器产生的工作频率，并以驱动频率输出驱动一个电源电路中的压电变压器的信号。当至少一个电源电路和剩余电源电路输出电压时，由一个电源电路中的压控振荡器产生的工作频率被控制为高于由另一个电源中的压控振荡器产生的工作频率供电电路。

6. 发明申请

US20070201925A1 IMAGE FORMING APPARATUS, SHEET DISCHARGING DEVICE AND METHOD OF CONTROLLING THE SHEET DISCHARGING DEVICE 有权
标题翻译：图像形成装置，片材排出装置和控制片材排出装置的方法
公开(公告)号：US20070201925A1
公开(公告)日：2007-08-30
申请号：US11671677
申请日：2007-02-06
申请人： Seiji YOKOYAMA , Atsuhiko YAMAGUCHI
发明人： Seiji YOKOYAMA , Atsuhiko YAMAGUCHI
IPC分类号： G03G15/00
CPC分类号： G03G15/6544 , G03G21/14 , G03G2215/00426 , G03G2215/00827 , G03G2215/00924
摘要： An image forming apparatus, a sheet discharging device and method of controlling the sheet discharging device are disclosed. They require no instructions from users and no recording materials for initial setting of a staple when the users exchange a staple cartridge.
摘要翻译：公开了一种图像形成装置，片材排出装置和控制片材排出装置的方法。当用户更换钉仓时，它们不需要用户的指示，也不需要用于初始设置订书钉的记录材料。

7. 发明申请

US20060220495A1 POWER SUPPLY APPARATUS, AND IMAGE FORMING APPARATUS HAVING THE SAME 有权
标题翻译：电源装置和具有该电源装置的图像形成装置
公开(公告)号：US20060220495A1
公开(公告)日：2006-10-05
申请号：US11275635
申请日：2006-01-20
申请人： ATSUHIKO YAMAGUCHI , HIROSHI MANO , OSAMU NAGASAKI , Kouji Yasukawa
发明人： ATSUHIKO YAMAGUCHI , HIROSHI MANO , OSAMU NAGASAKI , Kouji Yasukawa
IPC分类号： H01L41/107
CPC分类号： H02M3/28 , G03G15/80 , H02M1/14 , H02M3/156 , H02M2001/008
摘要： In a power supply apparatus including a plurality of power supply circuits, each of the power supply circuits has a piezoelectric transformer, a rectification element which rectifies and smoothes a voltage output from the piezoelectric transformer in accordance with a load and outputs the voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, and a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and supplies a power supply voltage to the piezoelectric transformer. One power supply circuit includes a resonance frequency change unit which is connected to the output side of the piezoelectric transformer. The resonance frequency change unit drives the piezoelectric transformer of the power supply circuit at a driving frequency which is different from the driving frequency of the piezoelectric transformer in another power supply circuit by shifting the peak of the resonance frequency.
摘要翻译：在包括多个电源电路的电源装置中，每个电源电路具有压电变压器，整流元件，用于根据负载对从压电变压器输出的电压进行整流和平滑，并输出电压控制的振荡器，其根据输入控制信号控制输出信号的频率;以及电源电压供应元件，其由从压控振荡器输出的信号驱动并将电源电压提供给压电变压器。一个电源电路包括连接到压电变压器的输出侧的谐振频率改变单元。谐振频率改变单元通过使谐振频率的峰值偏移来驱动电源电路的压电变压器，该驱动频率与另一个电源电路中的压电变压器的驱动频率不同。

8. 发明授权

US08682197B2 High voltage power supplying apparatus and image forming apparatus having the same 有权
标题翻译：高压供电装置及具有该高压供电装置的图像形成装置
公开(公告)号：US08682197B2
公开(公告)日：2014-03-25
申请号：US12959758
申请日：2010-12-03
申请人： Yuuji Takayama , Atsuhiko Yamaguchi
发明人： Yuuji Takayama , Atsuhiko Yamaguchi
IPC分类号： G03G15/00
CPC分类号： H02M3/33507 , H01L41/044
摘要： In a high voltage power supplying apparatus, a pulse generation unit generates a pulse signal with a predetermined frequency. A piezoelectric transformer outputs a voltage in accordance with the frequency of the pulse signal. A detection unit detects an output voltage of the piezoelectric transformer. A control unit controls the pulse generation unit to change the frequency of the pulse signal by a predetermined value towards a frequency corresponding to a target voltage until the output voltage becomes equal to the target voltage. A storage unit stores data indicating the frequency when the output voltage reaches the target voltage. The control unit controls the output voltage to be equal to the target voltage by variably controlling the frequency of the pulse signal by a value smaller than the predetermined frequency from the frequency corresponding to the data stored in the storage unit.
摘要翻译：在高压供电装置中，脉冲生成部生成规定频率的脉冲信号。压电变压器根据脉冲信号的频率输出电压。检测单元检测压电变压器的输出电压。控制单元控制脉冲发生单元将脉冲信号的频率改变到与目标电压相对应的频率的预定值，直到输出电压变得等于目标电压。存储单元存储指示当输出电压达到目标电压时的频率的数据。控制单元通过从对应于存储在存储单元中的数据的频率可变地控制脉冲信号的频率小于预定频率的值来控制输出电压等于目标电压。

9. 发明授权

US07579749B2 Power supply device and image forming apparatus using the power supply device 失效
标题翻译：电源装置和使用该电源装置的成像装置
公开(公告)号：US07579749B2
公开(公告)日：2009-08-25
申请号：US11456049
申请日：2006-07-06
申请人： Hiroki Murata , Teruhiko Namiki , Osamu Nagasaki , Atsuhiko Yamaguchi , Tomohiro Nakamori , Takehiro Uchiyama , Kouji Yasukawa
发明人： Hiroki Murata , Teruhiko Namiki , Osamu Nagasaki , Atsuhiko Yamaguchi , Tomohiro Nakamori , Takehiro Uchiyama , Kouji Yasukawa
IPC分类号： H01L41/08
CPC分类号： H01L41/044 , G03G15/80
摘要： A power supply device generates an output voltage by driving a piezoelectric transformer using a frequency signal. The power supply device includes a comparison unit configured to compare an output voltage and a voltage setting signal that sets the output voltage, and a voltage control oscillation unit configured to generate the frequency signal to drive the piezoelectric transformer based on comparison results of the comparison unit. The voltage control oscillation unit generates the frequency signal within a range between the resonant frequency and a spurious resonant frequency closest to the resonant frequency.
摘要翻译：电源装置通过使用频率信号驱动压电变压器来产生输出电压。电源装置包括比较单元，其被配置为比较输出电压和设置输出电压的电压设置信号;以及电压控制振荡单元，其被配置为基于比较单元的比较结果来产生频率信号来驱动压电变压器。电压控制振荡单元在谐振频率和最接近谐振频率的寄生谐振频率之间的范围内产生频率信号。

10. 发明授权

US07265479B2 Power supply apparatus, and image forming apparatus having the same 有权
标题翻译：电源装置和具有该电源装置的图像形成装置
公开(公告)号：US07265479B2
公开(公告)日：2007-09-04
申请号：US11275635
申请日：2006-01-20
申请人： Atsuhiko Yamaguchi , Hiroshi Mano , Osamu Nagasaki , Kouji Yasukawa
发明人： Atsuhiko Yamaguchi , Hiroshi Mano , Osamu Nagasaki , Kouji Yasukawa
IPC分类号： H01L41/107
CPC分类号： H02M3/28 , G03G15/80 , H02M1/14 , H02M3/156 , H02M2001/008
摘要： In a power supply apparatus including a plurality of power supply circuits, each of the power supply circuits has a piezoelectric transformer, a rectification element which rectifies and smoothes a voltage output from the piezoelectric transformer in accordance with a load and outputs the voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, and a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and supplies a power supply voltage to the piezoelectric transformer. One power supply circuit includes a resonance frequency change unit which is connected to the output side of the piezoelectric transformer. The resonance frequency change unit drives the piezoelectric transformer of the power supply circuit at a driving frequency which is different from the driving frequency of the piezoelectric transformer in another power supply circuit by shifting the peak of the resonance frequency.
摘要翻译：在包括多个电源电路的电源装置中，每个电源电路具有压电变压器，整流元件，用于根据负载对从压电变压器输出的电压进行整流和平滑，并输出电压控制的振荡器，其根据输入控制信号控制输出信号的频率;以及电源电压供应元件，其由从压控振荡器输出的信号驱动并将电源电压提供给压电变压器。一个电源电路包括连接到压电变压器的输出侧的谐振频率改变单元。谐振频率改变单元通过使谐振频率的峰值偏移来驱动电源电路的压电变压器，该驱动频率与另一个电源电路中的压电变压器的驱动频率不同。

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