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    In offset lithography, an alternate term for plate desensitization, performed by applying a solution of gum arabic or a synthetic material like dextrin to the plate surface. See Desensitization.

    Gumming an uninked lithographic plate with gum arabic may blind the image, that is, render it non-ink receptive. Litho plate processors that apply a thin layer of gum to a new plate in the final stage of processing will typically use a dextrin based gum solution.

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