Imaging apparatus having different motors for separating and reading documents

An imaging device for reading an image out of an original document, comprising:

• separating means for separating a stack of original documents one by one;
• separating motor means for driving said separating means;
• reading means for reading an image of the original document separated from the stack;
• reading motor means for driving said reading means;
• transport means for transporting the original documents between the separating unit and the reading means;
• detector means for detecting a change in a radius of curvature of the original documents transported in the transport means;
• and
• control means for controlling at least one of the separating motor means and the reading motor means based on an output of the detector means.

An imaging device for reading an image out of an original document, comprising:

• a first drive motor;
• first transporting means arranged on a first transport path, for transporting the original document with a torque transferred from said first drive motor;
• a second drive motor;
• second transporting means arranged on a second transport path, for transporting the original document with a torque transferred from said second drive motor;
• a curved intermediate transport path connecting said first transport path to said second transport path, for guiding the original document coming out of said first transport path to said second transport path;
• reading means for scanning an image surface of the original document being conveyed along said second transport path by said second transporting means to thereby read an image;
• loop detecting means for detecting a change in a radius of curvature of the original document, as measured in said intermediate transport path, being conveyed by said first transporting means at a trailing edge and by said second transporting means at a leading edge;
• and
• control means for varying, when said loop detecting means determines that the radius of curvature of the original document has reached a limit value defined by said intermediate transport path, a rotation speed of either said first drive motor or said second drive motor in order to confine said radius of curvature in a range defined by said intermediate transport path.