This chapter gives an overview of the printing mechanisms as well as the sensors, actuators and
control electronics. It aids in understanding the basic principles of operation as well as locating defects
for troubleshooting.
3. MECHANICS ..............................................................................................2-3
3.1 Cross-section Drawing ............................................................................................... 2-3
3.2 Paper Feeding ............................................................................................................ 2-4
3.2.2 Paper supply...................................................................................................... 2-6
3.2.3 Paper registration .............................................................................................. 2-7
3.2.4 Paper eject ........................................................................................................ 2-8
3.3 Toner Cartridge ......................................................................................................... 2-10
3.5.1 Charging .......................................................................................................... 2-18
3.5.2 Exposure ......................................................................................................... 2-19
3.5.3 Development ................................................................................................... 2-20
3.5.4 Transfer ........................................................................................................... 2-21
3.5.5 Fusing.............................................................................................................. 2-22
3.5.6 Toner cleaning ................................................................................................. 2-23
3.6 Location of Sensors .................................................................................................. 2-24
CHAPTER 2
CONTENTS
Confidential