一些复印机，其中大部分是老式模拟复印机，采用了带正电荷的硒鼓和纸张，碳粉和负电荷。
Some copiers, mostly older analog copiers, employ a positively charged drum and paper, and negatively charged toner.
一些复印机，其中大部分是老式模拟复印机，采用了带正电荷的硒鼓和纸张，碳粉和负电荷。
Some copiers, mostly older analog copiers, employ a positively charged drum and paper, and negatively charged toner.
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