Mixed Original Size Mode - Ricoh D010 Service Manual

Overview
P1-P4 represent the four positions on the width sensor board. ON indicates the
presence of the terminal plate in a given position. "Original Width-1" and "Original
Width-2" are the outputs from the sensor board to the DF main board. The state of
these outputs (L or H) depends on the position of the terminal plate on the sensor
board (P1, P2, P3, or P4). For example, if the terminal plate is at P4, both outputs
are L.
A reading of "L" on either of the width sensor outputs indicates that the terminal
plate is connecting the GND pattern with the width sensor output signal line.
The machine cannot detect more than one size of originals in the same job.

2.2.2 MIXED ORIGINAL SIZE MODE

This section explains what happens when the user selects mixed original size mode.
Because this ADF is a sheet-through document feeder, the method for original document
width detection is the same as when the originals are the same size, but the document
length detection method is different. Therefore, the scanning speed is slightly slower.
Document length detection
From when the registration sensor switches on until it switches off, the CPU counts the
transport motor pulses. The number of pulses determines the length of the original.
Feed-in cycle
When the original size for the copy modes listed below cannot be determined, the image
cannot be correctly scaled (reduced or enlarged) or processed until the original's length
has been accurately detected. The length must be determined before the image is
scanned.
Auto Reduce/Enlarge
D330 16 SM