COPYRIGHT © 1999 CANON INC. CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 4IMAGE FORMATION SYSTEMI. IMAGE FORMATION SYSTEM ...4-1A. Outline ...................................4-1B. Basic Operation of ImageFormation System .................4-2II. CONTROLLING THE SCANNINGLAMP ...........................................4-3A. Outline ...................................4-3B. Mechanism ............................4-4III. PRIMARY/TRANSFER CORONACURRENT AND GRID BIASVOLTAGE CONTROL SYSTEM ..4-5A. Outline ...................................4-5B. Switching Primary/TransferCorona Current ON/OFF .......4-5C. Maintaining Primary/TransferCorona Current Constant ......4-6D. Controlling Grid Bias Voltage 4-7IV. CONTROLLING THEDEVELOPING BIAS ....................4-8A. Outline ...................................4-8B. Operation ..............................4-9C. Developing BiasOperation ........................... 4-11V. DOCUMENT DENSITYMEASUREMENT SYSTEM ...... 4-12A. Outline ................................ 4-12B. Operation ........................... 4-12C. Reading the Output of the AESensor ................................ 4-13VI. DEVELOPING ASSEMBLY/DRUM CLAENER ..................... 4-14A. Outlines .............................. 4-14B. Remaining Toner Sensor.... 4-14C. Torque Limiter .................... 4-14VII. BLANKING ................................ 4-15A. Outline ................................ 4-15B. Movement of the BlankExposure Mechanism ........ 4-16VIII. DISASSEMBLY ANDASSEMBLY ............................... 4-18A. Exposure Assembly ........... 4-18B. Blank Assembly .................. 4-20C. CORONA SYSTEM............ 4-21D. Development System ......... 4-24
