Lexmark MS81x Service Manual page 619

4063
Transfer
As the paper travels between the transfer roller and the photoconductor (drum), the Transfer roller applies a positive
charge to the back of the printing paper. This positive charge transfers the negative charged toner image from the
photoconductor (drum) to the top surface of the paper. The toner image is now on the paper and the paper is now
stuck to the photoconductor (drum) due to the relative electrical differences between the negative electrical charge
of the inner conductive layer of the drum and the positive electrical charge of the paper.
Cleaning
The cleaning blade removes any toner that remains on the drum after the transfer process. The toner that the cleaning
blade removes is collected inside the sealed PC cartridge.
Appendix C: Theory of operation
619