A film scanner for scanning an image formed on a film, is provided with a line sensor unit that scans the image in a main scanning direction, and a table supporting the film. The table is slidable in an auxiliary scanning direction. A geared transmission is provided to receives the driving force of a driving source and outputs, to a table driving mechanism, one of a first and a second driving force. The first driving force is a force with which the table driving mechanism drives the table in a forward direction at a first speed, and the second driving force is a force with which the table driving mechanism drives the table in a reverse direction at a second speed that is different from the first speed.

 
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