| 摘要 |
PURPOSE:To enable the lowering of an electrophoretic voltage by providing an electrode moving means (or an electrophoretic tube moving means) for bringing the electrode in a terminal electrolytic liquid tank close to a potential gradient detector and a voltage detector for monitoring an electrophoretic voltage. CONSTITUTION:An electrode 21 in a terminal electrolytic liquid tank 2 is moved horizontally in the axial direction of an electrophoretic tube 4 through a liquidtight packing 23 while an electrode moving section 22 is provided having a rack pinion mechanism and a stepping motor. Also a control section 51 is provided which has a voltage detector for monitoring a voltage between poles of electrodes 21 and 31. Then, when the detection voltage exceeds a specified value, a signal is sent to the electrode moving section 22 to move the electrode 21 gradually to a potential gradient detector 42 whereby it is controlled to keep the detection voltage from exceeding the value. Thus, the capacity of an electrophoretic power source, especially the maximum voltage can be lowered by holding down the electrophoretic voltage requiring a high voltage. |
