Registration black

Pass Color (English registration black) is a term used in the printing industry and refers to a color setting in which all the colors used in the printing process to print at 100%. It is used for registration marks (for example, registration marks ) and thus allows for the assessment of exactly the right state of the colors to each other (Passer difference). The color is black, but is in contrast to the "normal" black in the CMYK color model, not only from the proportion of black (Key), but from all the color components used in the respective printing process. Looking at the figure on the right exactly as you see on the black mark colored edges. The brand is printed with the fit color in each color of the color model. Find here a slight offset in pressure takes place, the colored marks appear not completely covered by the black mark. For this assessment of misregistration even with extended color models is possible to pass color must always contain all components. For example, it contains the extended color model CMYKOG next to Cyan, Magenta, Yellow ( Yellow Sheet ) and Black also orange and green.

In Software

In order to make an independent of the color models of different output devices representation of the passport color available, in the page description language PostScript ( from level 2) and uses PDF (version 1.2 ) of the color name space. It is a common mistake when dealing with set programs that pass color ( Registration) for normal black to be displayed elements such as To use text.

Because of special use for pass marks pass the color is not printed with the appropriate setting of some common set of programs (eg FreeHand, Adobe InDesign). This allows you to hide the registration marks and makes the above-mentioned error recognizable.

Distinction to the rich black

Pass the color should not be confused with fat black ( engl. rich black). It is even a black appearing color with minority color components, but the composition (not 100%) and application is another.