Apparatus for digitally scanning colour documents

The invention relates to a device (10) for the digital scanning of colored image documents, comprising at least one photosensitive sensor which is movable relative to the image original, wherein the movement is synchronized to scan, and at least one light source, wherein the photosensitive sensor as a TDI sensor ( 1), wherein the light source is designed in such a way that it generates adjacent RGB light strips (3), wherein one light strip (3) illuminates one line (2) of the TDI sensor (1) and the color of the light strips (3 ) synchronized with the shift clocks of the lines (2) of the TDI sensor (1) in the order RGB is switchable.