Konica Minolta bizhub c650 Service Manual page 30

Theory of Operation Ver. 8.0 Jun. 2008
bizhub C650/C550/C451 Main body
Outline
1. System configuration............................................................................................... 1
1.1 C650 ..................................................................................................................... 1
1.2 C550 ..................................................................................................................... 3
1.3 C451 ..................................................................................................................... 5
2. Product specifications ............................................................................................. 8
3. Section configuration............................................................................................. 15
4. Paper path............................................................................................................. 16
4.1 C650/C550 ......................................................................................................... 16
4.2 C451 ................................................................................................................... 17
5. Image creation process ......................................................................................... 18
Composition/Operation
6. Overall composition............................................................................................... 21
6.1 Control block diagram ......................................................................................... 21
7. Scanner section (IR section) ................................................................................. 22
7.1 Composition........................................................................................................ 22
7.1.1 CCD unit ..................................................................................................... 23
7.2 Drive ................................................................................................................... 23
7.3 Operation ............................................................................................................ 24
7.3.1 Scan and exposure lamp control................................................................. 24
7.3.2 Preventing stain on the DF original glass.................................................... 27
7.3.3 Original size detection control ..................................................................... 30
8. Write section (PH section)..................................................................................... 33
8.1 Composition........................................................................................................ 33
8.2 Operation ............................................................................................................ 34
8.2.1 Outline......................................................................................................... 34
8.2.2 Laser exposure process.............................................................................. 35
8.2.3 Laser emission timing ................................................................................. 36
8.2.4 Laser emission area.................................................................................... 37
8.2.5 Color registration control (color shift correction) system ............................. 38
8.2.6 Color skew correction control...................................................................... 40
8.2.7 PH unit temperature detection control ........................................................ 41
9. Imaging unit........................................................................................................... 42
CONTENTS
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