ADF Simplex Operation M The user inputs commands (through the touch screen and buttons) which are then sent to the Copy Processor Board. M The Copy Processor displays the appropriate screens on the copy module’s LCD based on the user’s inputs. The screens displayed are based on the screens downloaded from the printer. M The user presses the S TART button and the copy module receives the ADF read command. (The ADF or flatbed is determined by the ADF paper loaded sensor.) M The bottom document placed face-down in the chute is fed through the ADF. Paper size is detected by the Paper Size Sensor (A3, A4, B4, B5). This will tell the ADF Motor when to stop.
M The Carrier Unit reads the white reference and then moves to the ADF read position. M The ADF Motor starts to feed the paper. The top sensor detects the edge of the page. M The copy module counts the number of motor pulses to reach the end of the page. It also determines mispicks, double or misfeeds, and end of page when the data ends. M The image is scanned by the copy module engine, as explained on page 249. M The page is stacked in the output tray. This process repeats until the chute is empty. G The ADF Motor stops and the copy module awaits the next command. 246 Chapter 5 Functional Overview C4265-90907