Fujitsu 4120C Operating Guide - Page 156
Double-feed Detection Conditions
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8.5 Double-feed Detection Conditions There are three double-feed detection modes: document thickness, document length, and both document thickness and length. The following conditions must be satisfied in each of these detection modes. I Detection by Document Thickness Sheets of the same thickness shall be set in the ADF at a time. • Document thickness: 0.065 to 0.15mm • Printed area: 12% or less 8 • No black printed areas are allowed at the center area (26 x 10mm) at the leading edge of the document. • Punched holes are not allowed within 35mm of the vertical center line of the document. • The deviation in the amount of the light transmitted through background areas must not be less than 10%. ADF AND PAPER SPECIFICATION 8.5 Double-feed Detection Conditions 129
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