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October 2000 © TOSHIBA TEC
MR-3011/3012 SIZE DETECTION
7.3
Method of Original Size Detection (for Mixed Sized Original)
1)
Width
Width is detected by original width sensors 1,2 and 3 and the size data are saved when an original waiting
at the pre-feeding position has started to be fed and its leading edge reaches the first small roller of the read
roller.
2)
Size along the feeding direction
With original whose width is any of 210mm/216mm, if the original length sensor has already detected the
original when the read sensor detects the leading edge of the original, reverse operation is performed to
determine the size along the feeding direction. The read motor counts the pulse of the distance pulses till the
original length sensor detects the trailing edge of the original. Original size is determined by the result of
counting and threshold of size along the feeding direction, then size data are sent to the copier. At this time,
data of the size along the feeding direction are sent first.
The size along the feeding direction of B5-R or smaller originals is determined as with other standard sized
originals. (reverse operation is performed after the size is determined.)
1) Timing to determine the width
2) Timing to determine the size along the feeding direction
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