Toshiba 4580, Service Manual

Page: 306 / 379

Mar. 1999 © TOSHIBA TEC 16 - 15 6570/5570 ADF
(9) Start of feed to completion of forward rotation transport
When the feed signal is received, and the DF operation in progress signal is set, the reversal feed of
the original that is set at the exposure position is started. First of all, the transport motor and reversal
motor start operating in the forward direction to rotate the transport belt and reversal roller. At the
same time, the flapper solenoid turns ON to switch the reversal flapper to the reversal side, and the
original is transported to the reversal section. After the exit sensor turns ON, the original is trans-
ported for a specified number of pulses. At the point where the leading edge of the original is nipped
by the reversal roller lower passage roller by a specified amount or more, the transport motor and the
reversal motor stop.
(10) Start of reversal to flapper solenoid OFF
After forward rotation transport is completed, the transport motor starts to rotate in the reverse direc-
tion, and the reversal motor starts to rotate in the forward direction to rotate the transport belt and
reversal roller to start reversal of the original. The original passes along the reversal path and is
transported onto the original glass. At the point when the trailing edge of the original has passed the
reversal flapper, the flapper solenoid turns OFF, and the reversal flapper is switched to the exit side.