| 摘要 |
<p>PROBLEM TO BE SOLVED: To allow a charge on an insulator of one object, at least a portion of the surface which is formed by the insulator, resulting from contact with other object, to be neutralized by use of a simple facility while they are in contact by checking in advance the polarity of the charge produced on the insulator of one object when it is in contact with the other object, and charging the insulator to the opposite polarity before they come into contact. SOLUTION: A charge is produced on an insulator 2 by bringing the insulator 2 into contact with a manufacturing tool 3 in advance without operating a charge imparting means 7. The potential 51 of the charge is measured using a potentiometer 5, and a voltage 61 of the opposite polarity to that of the potential 51 measured is applied to a discharge device 71 using an applied voltage control means 6, so that ions 93 are produced by a discharge and supplied to the insulator 2. By thus charging the insulator 2, the polarity and strength of the charge 3 can be changed simply by changing the voltage applied to the discharge device 71. On the surface of the insulator 2 after contact with the manufacturing tool 3, the charges 83, 84 of opposite polarities are distributed and cancel out each other, neutralizing the charge 84 and suppressing the charging.</p> |
