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Theory of Operation Ver. 1.0 Jan. 2010
DF-619
1.
PRODUCT SPECIFICATIONS ................................................................................ 1
2.
SECTION CONFIGURATION.................................................................................. 4
3.
PAPER PATH........................................................................................................... 4
4.
CONFIGURATION .................................................................................................. 5
5.
DRIVE ..................................................................................................................... 6
6.
OPERATION ........................................................................................................... 7
6.1
Paper feed section ................................................................................................ 7
6.1.1
Document feed tray ascent/descent control .................................................. 7
6.1.2
Original take-up control ................................................................................. 9
6.1.3
Original set detection .................................................................................... 9
6.1.4
Original size detection................................................................................. 10
6.2
Registration section ............................................................................................ 11
6.2.1
Registration control ..................................................................................... 11
6.3
Read section....................................................................................................... 12
6.3.1
Reading transport control............................................................................ 12
6.3.2
Reading roller pressure/retraction control ................................................... 13
6.3.3
DF original glass contamination prevention control .................................... 14
6.3.4
CIS original reading control......................................................................... 16
CIS control when sub-power switch is turned ON....................................... 18
6.3.5
6.3.6
CIS control when the document is loaded .................................................. 18
6.3.7
CIS control when the start key is pressed................................................... 19
6.3.8
CIS glass contamination prevention control ................................................ 21
6.3.9
CIS power control........................................................................................ 22
6.3.10
Guide set detection ..................................................................................... 22
6.4
Paper exit section ............................................................................................... 23
6.5
Paper path .......................................................................................................... 24
6.5.1
1-sided mode .............................................................................................. 24
6.5.2
2-sided mode .............................................................................................. 24
6.6
Open/close detecting section.............................................................................. 26
6.6.1
DF angle open/close detection ................................................................... 26
6.6.2
DF open/close detection ............................................................................. 26
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