Solenoids
........................................................................................................
119
Clutches
..........................................................................................................
120
Switches
..........................................................................................................
120
Sensors
...........................................................................................................
121
Motors and fans
..............................................................................................
122
High-voltage power supply
..............................................................................................
123
Low-voltage power supply
...............................................................................................
125
Overcurrent/overvoltage protection
.................................................................
126
Safety
..............................................................................................................
126
Voltage detection
............................................................................................
126
Sleep (powersave) mode
................................................................................
126
Low-voltage power supply failure
....................................................................
126
Fuser (fixing) control
........................................................................................................
127
Fuser (fixing) temperature-control circuit
........................................................
128
Fuser (fixing) over-temperature protection
......................................................
128
Fuser (fixing)-failure detection
.........................................................................
129
Laser/scanner system
......................................................................................................................
131
Image-formation system
...................................................................................................................
133
Image-formation process
.................................................................................................
134
Step 1: Pre-exposure
......................................................................................
135
Step 2: Primary charging
.................................................................................
135
Step 3: Laser-beam exposure
.........................................................................
136
Step 4: Development
.......................................................................................
136
Step 5: Primary transfer
..................................................................................
136
Step 6: Secondary transfer
.............................................................................
137
Step 7: Separation
..........................................................................................
138
Step 8: Fusing
.................................................................................................
138
Step 9: ITB cleaning
........................................................................................
139
Step 10: Drum cleaning
...................................................................................
139
Print cartridge
..................................................................................................................
139
Developing-roller engagement and disengagement
........................................................
141
Intermediate transfer belt (ITB) unit
.................................................................................
142
Primary-transfer-roller engagement and disengagement
................................
143
ITB cleaning
....................................................................................................
144
Calibration
........................................................................................................................
145
Color-misregistration control
...........................................................................
146
Image-stabilization control
..............................................................................
147
Pickup, feed, and delivery system
....................................................................................................
148
Pickup-and-feed unit
........................................................................................................
151
Cassette pickup
...............................................................................................
151
Cassette-presence detection
..........................................................
153
Cassette lift operation
.....................................................................
153
Cassette paper-presence detection
................................................
154
Multifeed prevention
.......................................................................
155
vi
ENWW