Toshiba 4580, Service Manual

Page: 297 / 379

6570/5570 ADF 16 - 6 Mar. 1999 © TOSHIBA TEC
(3) Restart to end of initial alignment
The feed motor starts to operate in the forward direction to rotate the aligning roller, transport of the
original is started, and the initial alignment operation is restarted.
After the timing sensor detects the leading edge of the original, the original is transported by a speci-
fied number of pulses. At the point that the original arrives at the initial alignment standby position,
the feed motor stops, and the initial alignment operation is completed.
At this time, forward rotation of the feed motor causes the weight plate to rise. At the point that initial
alignment operation is completed, the status of the width sensor is checked and stored to memory.
The transport motor and reversal motor stop at the point when they have been driven by a specified
number of pulses, and exit operation is completed. However, note, that if the original exit operation
was in progress at this time, dummy exit operation is completed at the point when the exit operation
of this original is completed.
(4) Start of original transport to aligning sensor OFF (detection of scan size)
After completion of dummy exit, the feed motor and transport motor start to operate in the forward
direction, and the aligning roller and transport belt rotate to start transport of the original standing by
at the initial alignment position to the exposure position. At this time, detection of the scan size is
started. From the second original onwards, the reversal motor also starts to rotate in the forward
direction at the same time to start exit operation.
The number of pulses from start of transport of the original at the initial alignment position to when
the trailing edge of the original passes the aligning sensor is counted to detect the length of the
original.
The stop notice signal is set at the set timing of the stop notice signal.
At the point that the aligning sensor detects the trailing edge of the original, the DF operation in
progress signal is reset, detection of the scan size is completed, and the original size is determined
also by the state of the width sensor that was stored to memory at completion of initial alignment. If
the original is a non-standard size, or the original size differs from that of the previously fed original,
the original size data is sent to the copier.