Toshiba E-STUDIO 850 - Manual (Page 327)

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Reversing Automatic Document Feeder
Copy sides 1-side, Duplex
Number of originals (LT) 100 originals or less than 0.63" in height (13 - 20 lb.)
Feeding speed 600 dpi: 71 sheets/min.
300/150 dpi: 83 sheets/min.
400/200 dpi: 79 sheets/min.
Acceptable originals LD - ST-R, A3 - A5-R (ST and A5 are not acceptable)
Paper weight 13 - 34 lb. (1-sided original), 13 - 28 lb. (2-sided original)
Power source Power supplied from the equipment