Oki OKIOFFICE 84 Service Manual page 444

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Service Guide OKIOFFICE 84
Chapter B Print Operation Description
Transfer
The transfer roller is composed of conductive sponge material. This roller is set so that the surface of the image
drum and sheets of paper will adhere closely.
A sheet of paper is placed on the surface of the image drum and the positive charge opposite to the negative charge
of a toner is applied from the reverse side by the transfer roller.
When a high negative voltage is applied from the power supply to the transfer roller, the positive charge induced on
the surface of the transfer roller moves to the paper side at the contact part between the transfer roller and the sheet
of paper. The positive charge on the lower side of the sheet of paper then causes the negatively charged toner
adhering to the surface of the image drum to move to the upper side of the sheet.
This enables transfer to the sheet of paper.
Copyright 1998, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner
Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

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