Raster
A grid that determines resolution. Standard rasters (e.g. AM raster) are used and their resolution is determined by the LPI value; stochastic rasters permit a higher resolution rendering of details and are not defined by the LPI value. A stochastic raster is used only for selected technologies.
Retouching
Manual, mechanical or photo mechanical corrections made to the master print, negative or positive print or printing plates to eliminate deficiencies and defects and perfect the resulting printed reproductions
RGB
A colour space combining 3 basic colours, red, green and blue