High resolution device for digitizing large size documents

Document scanning apparatus (10) in which a document (12) is placed on a plane support (14) defining an object plane (P), and including a camera (16) situated at a distance from the document, the camera including an objective lens system (42) forming an image of the document on an image plane (P′), and the apparatus being characterized in that:

• the camera includes a photosensitive sensor (44) for scanning a line of the image plane in a first direction;
• the camera includes first motor means adapted to move (46) the sensor in controlled manner in a second direction that is distinct from the first, so as to sweep over the surface of the image plane in said second direction;
• at least one light generator (20) is provided that is suitable for forming a narrow strip of light (36) in the object plane and extending parallel to said first direction;
• the light generator includes second motor means suitable for displacing (50) the light strip in controlled manner so as to sweep over the surface of the object plane parallel to said second direction;
• and
• servo-control means are provided for providing servo-control between the first and second motor means to keep the scan line in the image plane in correspondence with the light strip in the object plane.