Self-duplicating paper product
AssigneeDrwaxher Geschaftsdrucke GmbH
InventorsReinhold Uhlemayr, Rolf Waible
Life of this patent
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Abstract
In order, in a self-duplicating paper product, to block certain areas in their duplicating function, it is suggested that these particular areas of at least one paper surface bearing one of the two reaction components be coated with a barrier layer not permeable to the reaction components, whereby the barrier layer material leaves the reactivity of the reaction components as such essentially unaffected.
Claims9
Self-duplicating paper product comprising two reaction components applied to separate paper surfaces, these components being brought into contact with one another only by pressure, certain regions of at least one paper surface bearing one of the two reaction components being coated with a barrier layer not permeable to the reaction components, the barrier layer material leaving the reactivity of the reaction components as such essentially unaffected and preventing the two reaction components from meeting from application of pressure during writing to said region.
Dependencies are inferred from the claim text.