Image Removing Device Of Electronic Handwriting System And Method For Operating Electronic Handwriting System

The invention provides the image removing device of an electronic handwriting system, which comprises a carrier, a light guiding plate, at least one light source and an optical film. The light guiding plate arranged in the carrier at least comprises at least one light incident surface and a light outgoing surface. The light source arranged on the light incident surface of the light guiding plate is used for generating a light ray. The light ray enters the light guiding plate through the light incident surface and is emitted from the light guiding plate through the light outgoing surface. The optical film is covered on the light outgoing surface of the light guiding plate.