| http://www.w3.org/ns/prov#value | - Thus a further aspect of the invention provides a method of printing on an area of a substrate using ink, the method comprising: depositing a first pass of ink on the area; and treating the ink, for example by partially solidifying/curing the ink, such that the treated, for example partially cured or partially solidified, ink is such that at least a part of the ink can be displaced by rubbing.
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