Patent ID: 6542622
Filing Date: 2003-04-01
Classification: B41J

Abstract:
A method of forming a test target for use in conducting a test of print quality of a printer printing invisible encodements in invisible ink that can be captured and decoded by a reader, the method comprising the steps of:providing a test print media to the printer under test; and printing a plurality of invisible encodements of test data over a surface of the test print media in a defined spatial order by the printer, wherein the printed encodements differ from one another, and print quality of the printer is determined by the ability of the reader to read and decoded at least certain ones of the plurality of invisible encodements; wherein: the providing step further comprises the step of: applying invisible material that is sensitive to the same wavelength of light as the invisible ink of the printer to the media surface in a plurality of densities in a plurality of spaced apart areas of the media surface, thereby providing step background densities in a test tablet manner, and the printing step further comprises the step of: operating the printer to print the plurality of invisible encodements of test data in the plurality of spaced apart areas of the media surface over the applied invisible materials.