Transfer - OKIDATA OF1000 Service Manual

Page: 55
Service Guide OF1000
Chapter 2 Principles of Operation

2.5.07 Transfer

The transfer roller is made of a conductive sponge material. The roller keeps the paper in constant
contact with the image drum. Paper is placed over the image drum surface. A positive charge
(opposite in polarity to the toner) is applied to the paper from the reverse side.
A charged particle will be attracted to a particle having a MORE POSITIVE charge than its own.
A high positive charge is applied to the transfer roller by the power supply board. This induced
charge (on the surface of the transfer roller) is transferred to the paper when contact is made
between the transfer roller and the paper. The lower side of the paper is positively charged. The
negatively charged toner (on the photosensitive drum) is transferred to the upper side of the paper
because of the positive charge on the lower side of the paper.
Copyright 1997, 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)