Image Transfer - Ricoh FT5540 Service Manual

7.2 IMAGE TRANSFER

The registration rollers [A] feed the copy paper through the transfer entrance guide to the
transfer section. A high positive voltage is applied to the transfer corona wire [B], and the
corona wire generates positive ions. These positive ions are applied to the reverse side of the
paper, and the paper is electrostatically attracted to the drum surface. This is due to the
relationship between the following three attractive forces:
A1: Paper and Toner
The attraction between the positively charged paper [C] and the negatively charged toner.
A2: Paper and Drum (Aluminum core)
The attraction between the positively charged paper and the negative countercharge on
the aluminum core of the drum.
A3: Toner and Drum (Selenium layer)
The attraction between the positively charged drum and the negatively charged toner.
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31 August 1989