High Resolution Drum Scanning

Our Linotype-Hell Tango drum scanner is capable of scanning at an optical resolution of 11,000 dpi with an outstanding density range and precision. Coupled with Linocolor color management software and experienced staff we produce sharp, color-accurate high resolution images.

Limitations of resolution as basis for scanning precision

Common desktop scanners offer as much as 4800dpi resolution, but with limited color recognition ability. To put it crudely, scanning a small multi-hued photo of an ocean surface might render for you an image of a flat blue sky.

General Criteria for Scan Quality Resolution
(Scanner capabilities that retain image quality)

Resolution. The scanner's ability to capture details is its optical resolution. A good scanner should be able to resolve up to 12 line pairs per millimeter.

Color Registration refers to the alignment of the CCD or CIS array's red, green, and blue planes. Upon close inspection of an image scan, fine lines may appear to be surrounded by a rainbowlike halo (technically referred to as a chromatic aberration). The degree of poor color registration is described by the distance between any two misaligned planes.

Uniformity. A scanner must render consistent brightness over the entire surface of a gray letter-size target.

Noise on an image scan can arise from contamination of the scanner's platen or from its internal electric noise in the circuitry. Noise levels can be measured by comparing the standard deviation of gray levels in the original test target against that of the scanned copy.