公开(公告)号：US08944560B2

公开(公告)日：2015-02-03

申请号：US13798316

申请日：2013-03-13

申请人： Sumiaki Aoki ,  Kohta Akiyama

发明人： Sumiaki Aoki ,  Kohta Akiyama

IPC分类号： B41J2/165 ,  B41J29/38 ,  B41J2/045 ,  B41J2/11 ,  B41J2/14

CPC分类号： B41J2/11 ,  B41J2/04541 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596 ,  B41J2002/14403

摘要： An image forming apparatus includes: a recording head including multiple nozzles and multiple piezoelectric elements that generate pressure for causing droplets to be ejected from the nozzles; a driving-waveform generating unit that generates a driving waveform to be applied to the piezoelectric elements; first switching devices each disposed between the driving-waveform generating unit and respective one of the piezoelectric elements; second switching devices each disposed between a predetermined voltage and respective one of the piezoelectric elements; and a slight-vibration control unit. The slight-vibration control unit causes slight vibrations to be applied to a non-ejection nozzle by placing the second switch device for the non-ejection nozzle in a conduction state, and, when a predetermined period of time has elapsed after shift to the conduction state, placing the second switch device in a non-conduction state and the first switch device for the non-ejection nozzle in a conduction state.

摘要翻译： 图像形成装置包括：包括多个喷嘴的记录头和产生用于使喷嘴从喷嘴喷出的压力的多个压电元件; 驱动波形生成单元，其生成施加到所述压电元件的驱动波形; 第一开关器件，每个设置在驱动波形发生单元和相应的一个压电元件之间; 每个设置在预定电压和相应的一个压电元件之间的第二开关装置; 和轻微的振动控制单元。 轻微的振动控制单元通过将用于非喷射喷嘴的第二开关装置放置在导通状态，使得对非喷射喷嘴施加轻微的振动，并且在转移到导通之后经过预定的时间段 状态，将所述第二开关器件置于非导通状态，并将所述非喷射嘴的所述第一开关器件置于导通状态。

公开(公告)号：US5729024A

公开(公告)日：1998-03-17

申请号：US640692

申请日：1996-05-01

申请人： Nobuyuki Baba ,  Toshiharu Murai ,  Sumiaki Aoki ,  Koichi Kudo

发明人： Nobuyuki Baba ,  Toshiharu Murai ,  Sumiaki Aoki ,  Koichi Kudo

IPC分类号： G01J1/20 ,  G01N21/47 ,  G03G15/00 ,  H01J3/14 ,  H04N1/00 ,  H04N1/113 ,  G02B5/32 ,  G02B26/08

CPC分类号： G03G15/607 ,  H04N1/00681 ,  H04N1/00737 ,  H04N1/00748 ,  H04N1/00753 ,  H04N1/00769 ,  H04N1/113

摘要： An original placement table is provided, on which an original sheet is placed. An original scanning device causes a light beam to scan the original sheet placed on the original placement table. A light receiving device receives a light beam which has been reflected by the original sheet placed on the original placement table after being emitted by the original scanning device. An original edge determining device monitors light intensity of the light beam received by the light receiving device. The original edge determining device determines that the light beam currently being received by the light receiving device is the light beam reflected by an edge of the original sheet placed on the original placement table when a significant variation is detected in the light intensity either for the first time or for the last time in one scanning operation of the original scanning device.

摘要翻译： 提供原始放置表，原始放置表放置在原始放置表上。 原始扫描装置使光束扫描放置在原始放置台上的原稿。 光接收装置在由原始扫描装置发射之后接收由放置在原始放置台上的原稿片所反射的光束。 原始边缘确定装置监视由光接收装置接收的光束的光强度。 原始边缘确定装置确定当光接收装置当前正在接收的光束是在原始放置台上放置原始片材的边缘反射的光束时，在第一 时间或最后一次在原始扫描设备的一次扫描操作中。

公开(公告)号：US07494199B2

公开(公告)日：2009-02-24

申请号：US10513216

申请日：2003-06-20

申请人： Sumiaki Aoki

发明人： Sumiaki Aoki

IPC分类号： B41J29/38 ,  B41J2/45

CPC分类号： B41J2/04541 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/14274 ,  B41J2002/14411

摘要： There is provided a head control device able to re-charge an electromechanical transducing element with a driving pulse without requiring an additional re-charging time period in a recording period. The driving signal includes a plurality of driving pulses, and in each recording period, at least one driving pulse includes a portion varying from a discharging level to a medium level to charge the piezoelectric element to eject a liquid droplet, and a subsequent portion varying from the medium level to a target level to re-charge the piezoelectric element to the target level.

摘要翻译： 提供了一种头控制装置，其能够利用驱动脉冲对机电换能元件进行再充电，而不需要在记录周期内的额外再充电时间段。 驱动信号包括多个驱动脉冲，并且在每个记录周期中，至少一个驱动脉冲包括从放电电平变化到中间电平的部分，以对压电元件充电以喷射液滴，并且随后的部分从 将介质水平提高到目标水平，以将压电元件重新充电到目标水平。

公开(公告)号：US06923520B2

公开(公告)日：2005-08-02

申请号：US10172592

申请日：2002-06-14

申请人： Tatsuhiko Oikawa ,  Toshihito Kamei ,  Takashi Kimura ,  Sumiaki Aoki ,  Mikio Ohashi

发明人： Tatsuhiko Oikawa ,  Toshihito Kamei ,  Takashi Kimura ,  Sumiaki Aoki ,  Mikio Ohashi

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J2/205 ,  B41J29/38

CPC分类号： B41J2/04541 ,  B41J2/04578 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/0459 ,  B41J2/04591 ,  B41J2/04595 ,  B41J2/04596 ,  B41J2002/14411

摘要： A head driving unit the generates a driving waveform, each driving waveform including a plurality of driving pulses, and selects one or more driving pulses to be applied to a liquid drop discharging head in response to data corresponding to an image. By selecting a plurality of selection signals that defines the driving pulses to be applied to the liquid discharging head, the head driving unit can change a recording density or record multiple value images.

摘要翻译： 头驱动单元产生驱动波形，每个驱动波形包括多个驱动脉冲，并且响应于对应于图像的数据，选择要施加到液滴排放头的一个或多个驱动脉冲。 通过选择限定要施加到液体排出头的驱动脉冲的多个选择信号，头驱动单元可以改变记录密度或记录多个值图像。

公开(公告)号：US08602515B2

公开(公告)日：2013-12-10

申请号：US13402252

申请日：2012-02-22

申请人： Kaoru Satoh ,  Sumiaki Aoki

发明人： Kaoru Satoh ,  Sumiaki Aoki

IPC分类号： B41J29/38

CPC分类号： B41J2/04581 ,  B41J2/04541 ,  B41J2/04568

摘要： An image forming device includes a liquid discharge head including piezoelectric elements; a drive waveform generating unit that outputs a drive waveform; a selection unit that applies the drive waveform to the piezoelectric elements; a resonant frequency adjusting circuit that is connected in parallel with the piezoelectric elements; a switch unit that switches the resonant frequency adjusting circuit; and a switching control unit that causes the switch unit to switch in accordance with a first number of simultaneously driven piezoelectric elements. When the first number of the simultaneously driven piezoelectric elements is greater than a predetermined number, the switching control unit connects the resonant frequency adjusting circuit, so that a resonant frequency of a closed loop becomes lower than a resonant frequency of the closed loop when the first number of the simultaneously driven piezoelectric elements is less than the predetermined number.

摘要翻译： 图像形成装置包括：包括压电元件的液体排出头; 驱动波形发生单元，其输出驱动波形; 将驱动波形施加到压电元件的选择单元; 与压电元件并联连接的谐振频率调节电路; 开关单元，其切换所述谐振频率调整电路; 以及开关控制单元，其使开关单元根据第一数量的同时驱动的压电元件进行切换。 当第一数量的同时驱动的压电元件大于预定数量时，开关控制单元连接谐振频率调节电路，使得闭环的谐振频率变得低于闭环的谐振频率，当第一 同时驱动的压电元件的数量小于预定数量。

公开(公告)号：US20050237350A1

公开(公告)日：2005-10-27

申请号：US10513216

申请日：2003-06-20

申请人： Sumiaki Aoki

发明人： Sumiaki Aoki

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J29/38

CPC分类号： B41J2/04541 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/14274 ,  B41J2002/14411

摘要： There is provided a head control device able to re-charge an electromechanical transducing element with a driving pulse without requiring an additional re-charging time period in a recording period. The driving signal includes a plurality of driving pulses, and in each recording period, at least one driving pulse. includes a portion varying from a discharging level to a medium level to charge the piezoelectric element to eject a liquid droplet, and a subsequent portion varying from the medium level to a target level to re-charge the piezoelectric element to the target level.

摘要翻译： 提供了一种头控制装置，其能够利用驱动脉冲对机电换能元件进行再充电，而不需要在记录周期内的额外再充电时间段。 驱动信号包括多个驱动脉冲，并且在每个记录周期中至少有一个驱动脉冲。 包括从放电电平变化到中等水平的部分，以对压电元件充电以喷射液滴，以及随后的部分从介质电平变化到目标电平，以将压电元件重新充电到目标电平。

公开(公告)号：US06252682B1

公开(公告)日：2001-06-26

申请号：US09071201

申请日：1998-05-01

申请人： Nobuyuki Baba ,  Koichi Kudo ,  Sumiaki Aoki

发明人： Nobuyuki Baba ,  Koichi Kudo ,  Sumiaki Aoki

IPC分类号： H04N104

CPC分类号： G03G15/607 ,  G03G2215/00329 ,  H04N1/00681 ,  H04N1/00702 ,  H04N1/00708 ,  H04N1/00748 ,  H04N1/0075

摘要： A document sensing device for an image forming apparatus of the present invention is capable of sensing a document stably without being influenced by disturbing light, e.g., light ascribable to fluorescent lamps or similar illuminators illuminating a room. According to one aspect of die invention, optical elements are held by a jig rotatable about an optical axis. According to another aspect of the invention, a light receiving means or a photosensor means has at least four light-sensitive regions.

摘要翻译： 本发明的图像形成装置的文件检测装置能够稳定地感测文件，而不受受到荧光灯或类似照明器照明的房间的干扰光的影响。 根据本发明的一个方面，光学元件由可围绕光轴旋转的夹具保持。 根据本发明的另一方面，光接收装置或光传感器装置具有至少四个光敏区域。

公开(公告)号：US5929436A

公开(公告)日：1999-07-27

申请号：US912368

申请日：1997-08-18

申请人： Nobuyuki Baba ,  Toshiharu Murai ,  Sumiaki Aoki ,  Koichi Kudo

发明人： Nobuyuki Baba ,  Toshiharu Murai ,  Sumiaki Aoki ,  Koichi Kudo

IPC分类号： G01J1/20 ,  G01N21/47 ,  G03G15/00 ,  H01J3/14 ,  H04N1/00 ,  H04N1/113

CPC分类号： G03G15/607 ,  H04N1/00681 ,  H04N1/00737 ,  H04N1/00748 ,  H04N1/00753 ,  H04N1/00769 ,  H04N1/113

摘要： An original placement table is provided, on which an original sheet is placed. An original scanning device causes a light beam to scan the original sheet placed on the original placement table. A light receiving device receives a light beam which has been reflected by the original sheet placed on the original placement table after being emitted by the original scanning device. An original edge determining device monitors light intensity of the light beam received by the light receiving device. The original edge determining device determines that the light beam currently being received by the light receiving device is the light beam reflected by an edge of the original sheet placed on the original placement table when a significant variation is detected in the light intensity either for the first time or for the last time in one scanning operation of the original scanning device.

摘要翻译： 提供原始放置表，原始放置表放置在原始放置表上。 原始扫描装置使光束扫描放置在原始放置台上的原稿。 光接收装置在由原始扫描装置发射之后接收由放置在原始放置台上的原稿片所反射的光束。 原始边缘确定装置监视由光接收装置接收的光束的光强度。 原始边缘确定装置确定当光接收装置当前正在接收的光束是在原始放置台上放置原始片材的边缘反射的光束时，在第一 时间或最后一次在原始扫描设备的一次扫描操作中。

公开(公告)号：US5818062A

公开(公告)日：1998-10-06

申请号：US912359

申请日：1997-08-18

申请人： Nobuyuki Baba ,  Toshiharu Murai ,  Sumiaki Aoki ,  Koichi Kudo

发明人： Nobuyuki Baba ,  Toshiharu Murai ,  Sumiaki Aoki ,  Koichi Kudo

IPC分类号： G01J1/20 ,  G01N21/47 ,  G03G15/00 ,  H01J3/14 ,  H04N1/00 ,  H04N1/113

CPC分类号： G03G15/607 ,  H04N1/00681 ,  H04N1/00737 ,  H04N1/00748 ,  H04N1/00753 ,  H04N1/00769 ,  H04N1/113

摘要： An original placement table is provided, on which an original sheet is placed. An original scanning device causes a light beam to scan the original sheet placed on the original placement table. A light receiving device receives a light beam which has been reflected by the original sheet placed on the original placement table after being emitted by the original scanning device. An original edge determining device monitors light intensity of the light beam received by the light receiving device. The original edge determining device determines that the light beam currently being received by the light receiving device is the light beam reflected by an edge of the original sheet placed on the original placement table when a significant variation is detected in the light intensity either for the first time or for the last time in one scanning operation of the original scanning device.

摘要翻译： 提供原始放置表，原始放置表放置在原始放置表上。 原始扫描装置使光束扫描放置在原始放置台上的原稿。 光接收装置在由原始扫描装置发射之后接收由放置在原始放置台上的原稿片所反射的光束。 原始边缘确定装置监视由光接收装置接收的光束的光强度。 原始边缘确定装置确定当光接收装置当前正在接收的光束是在原始放置台上放置原始片材的边缘反射的光束时，在第一 时间或最后一次在原始扫描设备的一次扫描操作中。