24
Chapter 2 Description of the Operation
z Scanner Section...........................................................26
1. Description...............................................................26
2. Sequence of Operation...........................................27
(1) Sequence of the Scanner Operation ..................27
(2) Sequence of the Scanner Operation (S3-ADF)..27
(3) Operation with the Document
Cover Open / Closed ..........................................28
1. Reading the Document Size...........................28
2. Reading the Document Darkness..................28
2
Platemaking Area for the Selected Paper.....29
2
Platemaking Area for the Book Shadow
Erasing Mode..................................................29
3. Function of Parts and Circuit.............................30
(1) Slider Limit Sensors 1, 2....................................30
(2) Document Size Sensor........................................31
(3) Document Cover Open/Close Sensor.................33
(4) CCD / Lamps ......................................................34
(5) Scanner Unit Open / Close Detection................35
x Platemaking / Master Feed / Ejection Section...........36
Platemaking /
Master Feed Section
........................40
1. Description...............................................................40
2. Sequence of Operation...........................................41
(1) Operation when the master set ........................41
(2) Platemaking / Master Feeding ..........................42
3. Function of Parts ....................................................43
(1) Thermal Head.....................................................43
(2) End Mark Sensor ...............................................46
1. Master Setting Error Detection......................47
2. Master End Detection......................................47
(3) Master top sensor...............................................48
(4)
Drum Master Sensor .........................................49
(5) Cutter Unit.........................................................50
(6)
Master Feed Clutch (Electromagnetic clutch)..51
Master Ejection Section ...........................................52
1. Description...............................................................52
2. Circuit.......................................................................52
3. Function of Parts ....................................................53
(1) Master Ejection Sensor......................................53
1. Master Ejection Error Detection.....................53
2.
Rotation Control of the Eject(Roll-up) Motor
.........53
Master Clamp Opening/Closing Section ...............54
1. Description...............................................................54
2.
Operation of Master Clamp Open / Close Lever
........55
(1) Structure.............................................................55
(2) Master Attach / Detach Operation....................56
(3) Clamp Opening / Closing
Lever Position (B / C Mode)...............................57
3. Function of Parts ....................................................58
(1) B / C Mode Detect Sensor ..................................58
4. Returning Operation Flowchart
When the Power is Cut Off Accidentally...............59
c Paper Feed Section .....................................................60
1. Description...............................................................60
2. Operation .................................................................61
(1) Rotation of the Paper Feed Roller and
Timing Roller.....................................................61
(2) Paper Feed Roller Drive.....................................62
(3) Driving of the Timing Roller..............................63
(4) Escape the Guide Roller.....................................64
(5) Paper Feed Length.............................................65
3. Function of Parts.....................................................66
(1) Printing Position Adjustment Mechanism .......66
(2) Double Feed Detect Mechanism........................68
(3) Elevator Top Limit Sensor.................................69
(4) Elevator Lower Limit Switch ............................70
(5) Paper Sensor.......................................................71
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