Technology|of repro/camera scanners




This scanner has three CCD-lines narrowly placed side-by-side for the three primary colors red, green and blue, so that only one scan is needed for each image. New devices also work with aerial-CCD-elements. The scanning-process takes some time though, so that only continuous light elements (halogen-, fluorescence-light with daylight character or HMI-light) come into consideration.

Repro-scanners perform a scale depending on the distance to the object, only the number of pixels remains. Small objects can therefore be scanned at a higher resolution. This means that only these scanners have a variable optical resolution.

Because the scanned document is static, these scanners are ideal for the digitalization of old and damageable originals. Many devices are already designed for scanning books.

The large distance between the cameras and the original ensures a high depth-sharpness. Three-dimensional originals (e.g. works of art) are easily scanned this way.

Due to the structure of the camera, the size of the original is quite limited. Objects larger than A1 cannot be usefully deployed because the setting-up and the lighting would be too costly.