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1. 发明授权

US09048841B2 Driver circuit, driver apparatus, and image forming apparatus 有权
标题翻译：驱动电路，驱动器装置和图像形成装置
公开(公告)号：US09048841B2
公开(公告)日：2015-06-02
申请号：US12926680
申请日：2010-12-03
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： G06K15/00 , H03K17/725 , G09G3/20 , H03K17/79 , H03K17/081
CPC分类号： H03K17/79 , H01L2224/48091 , H01L2224/49111 , H03K17/08108 , H01L2924/00014
摘要： A driver circuit drives a plurality of groups of light emitting elements. Each element includes an anode, a cathode connected to the ground, and a gate that controls electrical conduction between the anode and cathode. A first driver section simultaneously drives the anodes of the elements of the plurality of groups of elements. A second driver section simultaneously drives the gates of the elements in a corresponding group of the plurality of groups. The second driver section includes a series connection of a first switch element and a voltage level shifter. The series connection is connected between a power supply and the group of gates. The second driver section further includes a second switch element connected between the group of gates and the ground.
摘要翻译：驱动电路驱动多组发光元件。每个元件包括阳极，连接到地的阴极和控制阳极和阴极之间的导电的栅极。第一驱动器部分同时驱动多组元件的元件的阳极。第二驱动器部分同时驱动多个组中的相应组中的元件的门。第二驱动器部分包括第一开关元件和电压电平移位器的串联连接。串联连接在电源和门组之间。第二驱动器部分还包括连接在该组门和地之间的第二开关元件。

2. 发明授权

US08836743B2 Drive device, print head and image forming apparatus 有权
标题翻译：驱动装置，打印头和成像装置
公开(公告)号：US08836743B2
公开(公告)日：2014-09-16
申请号：US13070006
申请日：2011-03-23
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： B41J2/385 , B41J2/39 , B41J2/47 , B41J2/45 , B41J2/435 , H01L25/075 , G06K15/12 , H01L33/00
CPC分类号： B41J2/435 , G06K15/1238 , H01L25/0753 , H01L33/0016 , H01L2224/48091 , H01L2924/10253 , H01L2924/1301 , H01L2924/13091 , H01L2924/3011 , H01L2924/3025 , H01L2924/00
摘要： A drive device to drive a plurality of three-terminal light emitting elements includes a drive circuit. The drive circuit includes a first and second conductive type MOS transistor complementarily connected to each other and configured to drive three-terminal light emitting elements that are in conduction state based on a received drive signal. The first conductive type MOS transistor is formed in a substrate region and includes a channel formation region, which is a region wherein a channel is to be formed. An impurity with the same polarity as that of the substrate region is injected in the channel formation region.
摘要翻译：驱动多个三端子发光元件的驱动装置包括驱动电路。驱动电路包括彼此互补连接的第一和第二导电型MOS晶体管，并且被配置为基于接收的驱动信号来驱动处于导通状态的三端子发光元件。第一导电型MOS晶体管形成在衬底区域中，并且包括作为要形成沟道的区域的沟道形成区域。在沟道形成区域中注入与衬底区域具有相同极性的杂质。

3. 发明授权

US08451306B2 Reference voltage generation circuit, drive device, print head, and image forming apparatus 有权
标题翻译：参考电压产生电路，驱动装置，打印头和成像装置
公开(公告)号：US08451306B2
公开(公告)日：2013-05-28
申请号：US13091601
申请日：2011-04-21
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： B41J2/435 , B41J2/47
CPC分类号： G03G15/326 , G03G15/04054 , G06K15/1247
摘要： A reference voltage generation circuit includes a first current-mirror circuit including a first MOS transistor connected to a first power source and a second MOS transistor of the first conductive type connected to the first power source; a second current-mirror circuit including a third MOS transistor and a fourth MOS transistor; a first resistor connected to the first node; a first bipolar transistor having a collector connected to the first resistor, an emitter connected to a second power source, and a base connected to the first node; a second bipolar transistor having a collector connected to the second node, an emitter connected to the second power source, and a base connected to the first bipolar transistor; a fifth MOS transistor connected between the first power source and an output terminal; and a third resistor connected between the output terminal and the second power source.
摘要翻译：参考电压产生电路包括：第一电流镜电路，包括连接到第一电源的第一MOS晶体管和连接到第一电源的第一导电类型的第二MOS晶体管; 包括第三MOS晶体管和第四MOS晶体管的第二电流镜电路; 连接到第一节点的第一电阻器; 第一双极晶体管，具有连接到第一电阻器的集电极，连接到第二电源的发射极和连接到第一节点的基极; 具有连接到第二节点的集电极的第二双极晶体管，连接到第二电源的发射极和连接到第一双极晶体管的基极; 连接在第一电源和输出端之间的第五MOS晶体管; 以及连接在输出端子和第二电源之间的第三电阻器。

4. 发明授权

US08421427B2 Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatus 有权
公开(公告)号：US08421427B2
公开(公告)日：2013-04-16
申请号：US12222984
申请日：2008-08-21
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： G05F1/00 , G05F3/04 , G05F3/08 , G05F3/16 , G05F3/20
CPC分类号： B41J2/45 , G06K15/1209 , G06K15/1247
摘要： A reference voltage generation circuit for outputting a reference voltage from an input voltage includes a specific voltage output unit for outputting a specific voltage from the input voltage; a first circuit section for outputting the reference voltage with a positive temperature property from the specific voltage output from the specific voltage output unit; and a second circuit section for setting a level of the reference voltage output from the first circuit section. The specific voltage output unit is formed of a regulator circuit having a first terminal connected to a power source. The first circuit section is formed of a bi-polar transistor element connected to a second terminal of the regulator circuit. The second circuit section is formed of a resistor connected to the second terminal of the regulator circuit, a collector terminal of the bi-polar transistor element, and an emitter terminal of the bi-polar transistor element.

5. 发明授权

US08400137B2 Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatus 有权
公开(公告)号：US08400137B2
公开(公告)日：2013-03-19
申请号：US12216741
申请日：2008-07-10
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： G05F3/16 , G05F3/20
CPC分类号： G05F3/30
摘要： A reference voltage generation circuit includes a current-mirror circuit formed of a plurality of MOS (Metal Oxide Semiconductor) transistors each having a source terminal connected to a power source and a gate terminal connected to with each other; and a plurality of transistors each connected to a drain terminal of each of the MOS transistors of the current-mirror circuit for controlling the current-mirror circuit, so that an output current of the current-mirror circuit is converted to a voltage to be output as a reference voltage. Each of the MOS transistors of the current-mirror circuit has the drain terminal connected to a collector terminal of each of the transistors. Accordingly, when a voltage of the power source varies, it is possible to maintain a collector voltage of each of the transistors at a specific level and a collector current of each of the transistors constant.

6. 发明授权

US08089501B2 Light emitting apparatus, optical printhead, and image forming apparatus 有权
标题翻译：发光装置，光学打印头和图像形成装置
公开(公告)号：US08089501B2
公开(公告)日：2012-01-03
申请号：US12318119
申请日：2008-12-22
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： B41J2/435 , B41J2/47
CPC分类号： B41J2/45
摘要： A light emitting apparatus includes optical thyristors, a driver circuit that supplies a drive current to the thyristors so that the thyristors emit light, and a control circuit that controls the thyristors. Each thyristor includes an anode, a cathode connected to the ground, and a gate. The thyristor emits light when the drive current flows therethrough. The control circuit controls the gate, causing a control current to flow from the anode to the gate to turn on the thyristors. The control circuit applies a control voltage to the gate, the control voltage being higher than a voltage appearing across the gate and the cathode when the thyristor remains turned on.
摘要翻译：一种发光装置包括光晶闸管，驱动电路，其向晶闸管提供驱动电流以使晶闸管发光;以及控制电路，其控制晶闸管。每个晶闸管包括阳极，连接到地的阴极和栅极。当驱动电流流经时，晶闸管发光。控制电路控制栅极，使得控制电流从阳极流到栅极以导通晶闸管。控制电路向栅极施加控制电压，当晶闸管保持导通时，控制电压高于栅极和阴极两端出现的电压。

7. 发明申请

US20110285805A1 DRIVING DEVICE, PRINT HEAD AND IMAGE FORMING DEVICE 有权
标题翻译：驱动装置，打印头和图像形成装置
公开(公告)号：US20110285805A1
公开(公告)日：2011-11-24
申请号：US13112058
申请日：2011-05-20
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： B41J2/435 , H05B37/02
CPC分类号： B41J2/45 , G03G15/04036 , G03G15/043 , H01L33/0004 , H01L33/0016
摘要： A driving device controls light emitting thyristors that each include a scanning circuit sequentially driving each of the plural stages of the light emitting thyristors by controlling scanning thyristors. Herein, terminals of each odd numbered stage of the scanning thyristors is commonly connected to a first clock terminal, and terminals of each even numbered stage of the scanning thyristors is commonly connected to a second clock terminal. A control terminal of a first stage scanning thyristor is connected to the second clock terminal, and another control terminal of a previous scanning thyristor is connected to the second control terminal of a subsequent scanning thyristor.
摘要翻译：驱动装置控制发光晶闸管，每个发光晶闸管包括通过控制扫描晶闸管顺序驱动多级发光晶闸管中的每一个的扫描电路。这里，扫描晶闸管的每个奇数级的端子共同连接到第一时钟端子，并且扫描晶闸管的每个偶数级的端子共同连接到第二时钟端子。第一级扫描晶闸管的控制端子连接到第二时钟端子，并且先前的扫描晶闸管的另一个控制端子连接到随后的扫描晶闸管的第二控制端子。

8. 发明申请

US20110234743A1 DRIVE DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS 有权
标题翻译：驱动装置，打印头和图像形成装置
公开(公告)号：US20110234743A1
公开(公告)日：2011-09-29
申请号：US13070006
申请日：2011-03-23
申请人： Akira NAGUMO
发明人： Akira NAGUMO
IPC分类号： B41J2/435 , G01D15/14
CPC分类号： B41J2/435 , G06K15/1238 , H01L25/0753 , H01L33/0016 , H01L2224/48091 , H01L2924/10253 , H01L2924/1301 , H01L2924/13091 , H01L2924/3011 , H01L2924/3025 , H01L2924/00
摘要： A drive device to drive a plurality of three-terminal light emitting elements includes a drive circuit. The drive circuit includes a first and second conductive type MOS transistor complementarily connected to each other and configured to drive three-terminal light emitting elements that are in conduction state based on a received drive signal. The first conductive type MOS transistor is formed in a substrate region and includes a channel formation region, which is a region wherein a channel is to be formed. An impurity with the same polarity as that of the substrate region is injected in the channel formation region.
摘要翻译：驱动多个三端子发光元件的驱动装置包括驱动电路。驱动电路包括彼此互补连接的第一和第二导电型MOS晶体管，并且被配置为基于接收的驱动信号来驱动处于导通状态的三端子发光元件。第一导电型MOS晶体管形成在衬底区域中，并且包括作为要形成沟道的区域的沟道形成区域。在沟道形成区域中注入与衬底区域具有相同极性的杂质。

9. 发明申请

US20110234001A1 DRIVE CIRCUIT, LIGHT PRINT HEAD, AND IMAGE FORMING APPARATUS 有权
标题翻译：驱动电路，光打印头和图像形成装置
公开(公告)号：US20110234001A1
公开(公告)日：2011-09-29
申请号：US13156419
申请日：2011-06-09
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： G05F1/56
CPC分类号： G03G15/043 , B41J2/45 , G03G15/04054 , H05B33/0815 , Y10T307/406
摘要： A drive circuit is provided for supplying a drive current to drive a plurality of driven elements each having two main electrodes. The drive circuit includes a switch circuit for receiving a drive signal; and a constant current circuit connected to the switch circuit for adjusting the drive current at a constant level. The constant current circuit is formed of a depletion type MOS transistor.
摘要翻译：提供驱动电路用于提供驱动电流以驱动具有两个主电极的多个从动元件。驱动电路包括用于接收驱动信号的开关电路; 以及连接到开关电路的恒流电路，用于将驱动电流调节在恒定水平。恒流电路由耗尽型MOS晶体管构成。

10. 发明申请

US20110181640A1 Driver circuit, driver apparatus, and image forming apparatus 有权
标题翻译：驱动电路，驱动器装置和图像形成装置
公开(公告)号：US20110181640A1
公开(公告)日：2011-07-28
申请号：US12929383
申请日：2011-01-20
申请人： Akira Nagumo
发明人： Akira Nagumo
IPC分类号： B41J29/38 , H03K17/00 , H05B37/02
CPC分类号： B41J2/45
摘要： A driver circuit is used for driving a plurality of groups of switch elements connected between a power supply terminal and a common terminal. Each switch element includes anode connected to the power supply terminal, a cathode, and a gate. The anode is connected to the power supply and the cathode connected to a common terminal. The gate controls electrical conduction between the anode and the cathode. The driver circuit includes a switch circuit connected between the power supply terminal and the common terminal, and a driver circuit into which a drive current flows. The switch circuit is in parallel with the switch elements, and the switch circuit electrically connects or disconnects between the power supply terminal and the common terminal in response to a control signal supplied thereto. A transmission line having a specific characteristic impedance, connected between the common terminal and the driver circuit.
摘要翻译：驱动电路用于驱动连接在电源端子和公共端子之间的多组开关元件。每个开关元件包括连接到电源端子，阴极和栅极的阳极。阳极连接到电源，阴极连接到公共端子。门控制阳极和阴极之间的导电。驱动器电路包括连接在电源端子和公共端子之间的开关电路以及驱动电流流过的驱动电路。开关电路与开关元件并联，并且开关电路响应于提供给其的控制信号而在电源端子和公共端子之间电连接或断开。具有特定阻抗的传输线连接在公共端和驱动电路之间。

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