	US 7,468,809 B2
	Method of printing an interface onto a surface using a complementary ink set
Kia Silverbrook, Balmain (Australia); and Paul Lapstun, Balmain (Australia)
Assigned to Silverbrook Research Pty Ltd, Balmain, New South Wales (Australia)
Filed on Nov. 08, 2004, as Appl. No. 10/982,974.
Application 10/982974 is a continuation in part of application No. 09/575187, filed on May 23, 2000, granted, now 6,987,573.
Claims priority of application No. PQ0559 (AU), filed on May 25, 1999; application No. PQ1313 (AU), filed on Jun. 30, 1999; and application No. PQ3632 (AU), filed on Oct. 25, 1999.
Prior Publication US 2005/0094186 A1, May 05, 2005
Int. Cl. G06F 3/12 (2006.01); G06F 15/00 (2006.01); G06K 1/00 (2006.01)

U.S. Cl. 358—1.8

13 Claims

1. A method of printing an interface onto a surface, the interface including visible text/graphics and coded data, the coded data being indicative of an identity of a region of the surface and of a plurality of locations on the surface, the method comprising the steps of:

(a) providing a printer comprising:

a data input module for receiving document data from a computer system, the interface being based at least partially on the document data;

a coded data generator for generating the coded data using at least some of the document data;

a printhead for printing the interface onto the surface; and

an ink supply for supplying ink to the printhead, the ink supply comprising an ink set including at least one visible text/graphics ink and a coded data ink;

and (b) printing the visible text/graphics and the coded data onto the surface using the printer,wherein the or each visible text/graphics ink has an absorption of less than 20% at all wavelengths in the range of 800 to 900 nm, where 100% absorption is defined as the maximum absorption of the or each visible text/graphics ink when printed onto the surface.