Table of Contents
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IMAGE FORMATION SYSTEM
This chapter discusses the principles of how images are formed. It also explains the timing at which
the various units involved in image formation are operated, and shows how they may be
disassembled/assembled and adjusted.
I.
PROCESSES .....................................4-1
Potential .......................................4-1
Scanning Lamp .............................4-6
Corona Current..............................4-11
Transfer Corona Current ...............4-15
E. Controlling the Blank Exposure
Lamp (LED) ...................................4-19
F. Drum Heater Circuit.......................4-22
Wire ...............................................4-25
Cleaning Mechanism .....................4-26
II.
/DEVELOPING ASSEMBLY ...............4-28
A. Outline ...........................................4-28
Bias/Roller Electrode .....................4-32
COPYRIGHT © 1997 CANON INC.
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CHAPTER 4
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Feeding Screw (locking)................4-38
III.
DISASSEMBLY AND ASSEMBLY......4-39
A. Scanning Lamp Assembly.............4-39
B. Standard White Plate ....................4-41
C. Pre-Exposure Lamp Unit ...............4-43
Assembly .......................................4-44
E. Photosensitive Drum .....................4-45
F. Potential Sensor Assembly ...........4-48
G. Primary Charging Assembly..........4-48
Assembly .......................................4-49
J. Charging Wire ...............................4-53
K. Developing Assembly ....................4-60
L. Hopper Assembly ..........................4-66
M. Drum Cleaner ................................4-67
Claw Drive Assembly ....................4-71
O. Waste Toner Feeding Assembly....4-72
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