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Enlargement/Reduction
Magnifications in Main Scanning Direction
In book mode/ADF mode
An image is read at 100% in main scanning direction. Magnification variation and its data process are controlled on main controller PCB.
Magnification in Sub Scanning Direction
To vary the magnification of sub scanning direction, the machine operates as below depending on the original reading methods and the magnifications.
1) Magnifications in book mode
To suite the selected rate of magnification, the machine changes the speed of original reading and executes data processing on main controller
PCB.
e.g.) Reduction to 25%: an original is read at 249.5mm/s, and the data is processed for 25% reduction (skipping for 4/1) by the main controller PCB.
e.g.) at 100%: an original is read at 249.5mm/s.
Operation
Magnifications
25% to 50%
50.1% to 199.9%
200% to 400%
Speed change of original reading (mm/sec)
249.5
249.5
124.7
Digital magnification process (%) on the
main controller PCB
25 to 50
50.1 to 199.9
100 to 200
2) Magnifications in ADF mode
To suite the selected rate of magnification, the machine changes the speed of original reading and executes data processing on main controller
PCB.
e.g.) Reduction to 25%: an original is read at 249.5mm/s and the data is processed for 25% reduction (skipping 4/1) by the main controller PCB.
e.g.) Enlargement to 200%: an original is read at 124.7mm/s and the data is processed for 100% direct reproduction by main controller PCB.
Operation
Magnifications
25% to 50%
50.1% to 199.9%
200% to 400%
Speed change of original reading (mm/sec)
249.5
249.5
124.7
Digital magnification process (%) on the
main controller PCB
25 to 50
50.1 to 199.9
100 to 200