Transfer Roller - Lexmark MX81x Service Manual

7463
Sensor (input)
The sensor (input) is located just before the print cartridge and can detect whether media exists in the input path. The
sensor is used to detect jams and to set functional timing.
Duplex
The printer has an integrated duplex that is used to provide two-sided printing. After the first side of the page is printed,
the page enters the duplex path and then re-enters the primary paper path just before the input sensor. The second
image is then printed on the reverse side of the paper.
Sensor (duplex path)
The media aligner roller is used to feed the media through the input path and to ensure that media is fed straight (not
skewed) through the machine. The media aligner roller can be adjusted to correct media skew issues and should always
be adjusted when it is replaced or removed.
Transfer

Transfer roller

The transfer roller applies charge to the rear surface of the media when the media passes between the transfer roller
and photo conductor (drum). The toner image is transferred from the photo conductor (drum) surface to the media
surface.
Appendix C: Theory of operation
746