A B C D E F G H I J K L M N O P Q R S T U V W

GC1

GC1 refers to a coated primary fibre board (chromo board) in packaging printing.

Front surface layer = hf white
inlay = light
Back surface layer = hf white

hf white: wood-free white layer of bleached pulp with a maximum of 5% mechanical pulp

light = light layer of mechanical wood pulp or of a mixture of unbleached pulp and mechanical wood pulp

GC2

GC2 refers to a coated primary fibre board (chromo board).

Front surface layer = hf white
inlay = light
Back cover layer = light

hf white: wood-free white layer of bleached pulp with a maximum of 5% mechanical pulp

light = light layer of mechanical wood pulp or of a mixture of unbleached pulp and mechanical wood pulp

GCR

Gray Component Replacement is a variant of the color build-up in printing.

GCR and UCR (Under Color Removalare opposite processesFiguratively speaking,this means: While UCR creates color image, and then replaces the deep dark values by blackGCR creates a black and white imageand then colorizes itas this was done in the past, for example, with colored engravings.

A lower ink consumption results in GCR as well as in UCR in faster dryingless ink consumption and also in a better reproduction of images.

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