| http://www.w3.org/ns/prov#value | - Print contrast reduction is accomplished by: abrading the print surface to remove some or all of the print ink, pigment or dye; abrading the print surface to spread the ink, pigment or dye to the non-printed areas of the surface; removal of print, pigment or dyes by application of heat, solvents, reactive chemicals or application of UV or other forms of radiation; and addition of inks, dyes, pigme
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