Patent ID: 7387068
Filing Date: 2008-06-17
Classification: B41K

Abstract:
1. A method of making an ink stamp, the method comprising: providing a first porous structure having a top surface, a bottom surface and porous edges extending between said top and bottom surfaces; loading a first ink into said first porous structure; providing a second porous structure having a top surface, a bottom surface and porous edges extending between said top and bottom surfaces; exposing the top surfaces of said first and second porous structures to a flash irradiation process to form a stamp pattern including non-porous and porous areas on the top surfaces; loading a second ink into said second porous structure; applying energy to one of the porous edges of said first porous structure to transform the porous edge to an edge having a non-porous surface; and assembling said first porous structure with said second porous structure so that the non-porous edge of said first porous structure is in direct contact with one of the edges of said second porous structure, wherein the non-porous edge prevents the first ink from passing through the non-porous edge to said second porous structure, non-porous edge of said first porous structure having a first pattern and the one of the edges of said second porous structure direct contact with the non-porous edge having a second pattern that matches the first pattern, the first pattern having a plurality of projections and a plurality of depressions, the second pattern having a plurality of projections and a plurality of depressions, the projections of the first pattern matching corresponding depressions of the second pattern, the projections of the second pattern matching correponding depressions of the first pattern, the assembling step including interlocking the first patterned edge of said first porous structure with the second patterned edge of said second porous structure, wherein said first and second porous structures can be assembled together in only one configuration.