14-08-2014 дата публикации
Номер: US20140227487A1
An identification document includes a first surface, at least a portion of the first surface being made of foamable synthetic material, and a tactile relief marking having a bubble structure formed in the foamable synthetic material. A method is used for producing at least one tactile relief marking on an identification document by an irradiation source. The identification document includes a surface having foamable synthetic material that has a property of increasing its volume by foaming upon application of energy. The method includes selectively irradiating the foamable synthetic material with energy to cause the foamable synthetic material to foam, thereby forming a tactile relief marking 1. An identification document , comprising:a first surface, at least a portion of the first surface being made of foamable synthetic material, anda tactile relief marking having a bubble structure formed in the foamable synthetic material.2. The identification document of claim 1 , wherein the bubbles contained in the tactile relief marking have diameters that are in a range of up to about 100 um.3. The identification document of claim 1 , further comprising a second surface opposite from the first surface claim 1 , the second surface being devoid of a negative relief marking directly opposite to the tactile relief marking formed on the first surface.4. The identification document of claim 1 , wherein the relief marking is non-black.5. The identification document of claim 1 , wherein the relief marking has a generally white claim 1 , generally gold or generally brown color.6. The identification document of claim 1 , wherein the synthetic material comprises polycarbonate.7. The identification document of claim 1 , wherein the relief marking has a color different from other portions of the foamable synthetic material of the first surface.8. The identification document of claim 1 , wherein the identification document contains a plurality of layers claim 1 , and a marking composed ...
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