公开(公告)号：US20020033644A1

公开(公告)日：2002-03-21

申请号：US09951196

申请日：2001-09-13

申请人： Toshiba Tec Kabushiki Kaisha

发明人： Jun Takamura ,  Noboru Nitta ,  Shunichi Ono

IPC分类号： H02M003/06

CPC分类号： H03K17/16 ,  B41J2/04541 ,  B41J2/04581 ,  H01L41/042 ,  H03K17/163 ,  H03K17/663 ,  H03K17/6872

摘要： When charging the capacitive element by driving opposed electrodes of an electrostatic capacitance of the capacitive element, the capacitive element is charged, with one of driving circuits set in a high impedance state, the one of the driving circuits varying a potential of one of the electrodes, and then the capacitive element is charged, with the one of the driving circuits set in a low impedance state. When discharging the capacitive element by driving the opposed electrodes of the electrostatic capacitance of the capacitive element, the capacitive element is discharged, with one of driving circuits set in the high impedance state, the one of the driving circuits varying a potential of one of the electrodes, and then the capacitive element is discharged, with the one of the driving circuits set in the low impedance state.

摘要翻译： 当通过驱动电容元件的静电电容的相对电极对电容元件充电时，电容元件被充电，其中一个驱动电路设置在高阻抗状态，驱动电路之一改变一个电极的电位 ，然后电容元件被充电，其中一个驱动电路设置在低阻抗状态。 当通过驱动电容元件的静电电容的相对电极对电容元件进行放电时，电容元件被放电，其中一个驱动电路设置在高阻抗状态，驱动电路之一改变其中一个的电位 电极，然后电容元件放电，其中一个驱动电路设置在低阻抗状态。

公开(公告)号：US20020190730A1

公开(公告)日：2002-12-19

申请号：US10217090

申请日：2002-08-12

申请人： TOSHIBA TEC KABUSHIKI KAISHA

发明人： Noboru Nitta ,  Jun Takamura ,  Shunichi Ono

IPC分类号： G01R027/26

CPC分类号： B41J2/0451 ,  B41J2/04541 ,  B41J2/04548 ,  B41J2/04555 ,  B41J2/04581 ,  B41J2/04588 ,  G01R31/016 ,  G01R31/028 ,  G01R31/2829 ,  Y10T307/527

摘要： A capacitive load driving unit includes a plurality of capacitive loads, a drive circuit for charging and discharging the capacitive loads, a pair of power lines for supplying a drive voltage from an external power source to the drive circuit, and a current reserve circuit for reserving a current required by the drive circuit for charging the capacitive loads. The current reserve circuit includes a capacitor that is charged by the drive voltage from the power lines, and a coupler section for coupling the capacitor between the power lines except for when a defect inspection is conducted.