Ricoh K-C3 Service Manual page 8

B245/B276/B277/B268/B269 Service Manual
Development Bias ..................................................................................................... 229
Toner Supply.............................................................................................................. 230
Toner Supply Mechanism .......................................................................................... 231
Toner Density Control ................................................................................................ 231
Toner Supply in Abnormal Sensor Conditions............................................................ 235
Toner Near End/End Detection and Recovery ........................................................... 236
Drum Cleaning and Toner Recycling ............................................................................. 238
Drum Cleaning........................................................................................................... 238
Toner Recycling ......................................................................................................... 239
Paper Feed ................................................................................................................... 240
Overview.................................................................................................................... 240
Paper Feed Drive Mechanism ................................................................................... 241
Paper Feed and Separation Mechanism ................................................................... 241
Paper Lift Mechanism ................................................................................................ 242
Paper End Detection ................................................................................................. 242
Paper Size Detection ................................................................................................. 243
Side Fences............................................................................................................... 245
Paper Registration..................................................................................................... 245
Image Transfer and Paper Separation .......................................................................... 247
Overview.................................................................................................................... 247
Image Transfer Current Timing .................................................................................. 248
Transfer Roller Cleaning ............................................................................................ 249
Paper Separation Mechanism ................................................................................... 250
Image Fusing and Paper Exit ........................................................................................ 251
Overview.................................................................................................................... 251
Fusing Unit Drive and Release Mechanism............................................................... 252
Fusing Entrance Guide Shift...................................................................................... 253
Pressure Roller.......................................................................................................... 254
Fusing Temperature Control ...................................................................................... 254
Overheat Protection................................................................................................... 256
Duplex Unit.................................................................................................................... 258
Overall ....................................................................................................................... 258
Drive Mechanism....................................................................................................... 259
Basic operation.......................................................................................................... 259
Feed In and Exit Mechanism ..................................................................................... 262
Energy Saver Modes of Basic Machines....................................................................... 263
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