Scan - a device for the digitization of originals and consequently, a method according to which can be performed

摘要

Scan - a device for the digitization of drafts with an incident light unit and one of a plurality of adjacent light-sensitive sensors existing measuring strip, in order to each point of a line to be able to allocate a light intensity value, as well as with a feed device, in order to the original and the measuring strip move relative to one another and in a stepwise manner in this case, the original to be scanned line by line, characterized in that parallel to the measuring strip extends a light bar, which consists of a plurality of adjacent, individually controllable lamps, there is, comprising means for performing a pre - scans in the case of the light bar, wherein the lamps are set to the same brightness values, comprising means for storing the determined brightness values of the original, and that a control unit in a program-controlled manner for each lamp during the step-by-step digitizing of the original is able to adjust a certain luminous power, the point - or in sections to the prevailing darkening of the background of the original is switched off, so that the original is a uniformly bright background is obtained, on which the actual information is lifted off rich in contrast, and that..