R

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RAL

RAL is a colour system mainly for paints (e.g. window frames). Like Pantone, a spot colour that is converted to CMYK for printing.

Raster graphics (pixel)

A raster (pixel) graphic is made of individual image dots. Enlarged too much, it becomes blurry and blocky.

Resolution

Resolution indicates how finely an image is built from pixels – measured in ppi. More pixels per inch mean more detail.

RGB

RGB is the colour system of screens: colour is mixed from red, green and blue light. RGB is not suitable for printing.

Rich black

Rich black is a particularly deep black mixed from several CMYK colours, used for large areas.

Round banners are made from two ring-shaped keder profiles and a printed banner and are mostly used hanging as ceiling banners or ceiling hangers. But there are also round display walls or banners as a circular surface.

Round keder - operating principle

The banner is provided with a hollow hem into which a plastic cord or a firm rope is drawn.The hem with the cord is drawn into the keder profile and thus sits centrally and slidably in the profile.