Patent ID: 6428155
Filing Date: 2002-08-06
Classification: B41J,B42C,B42P,B43K,B65H,C09D,G06F,G06K,G06Q,G07D,H04N,H04W,Y02D,Y10S,Y10T

Abstract:
A cartridge for a digital printer adapted to print information onto a media substrate in a form that can be read by the human eye and a form that is invisible to the human eye but readable to an optical reader device, the cartridge including:a housing defining a plurality of storage areas wherein at least one of the storage areas contains colorant for printing information that is visible to the human eye and at least one of the other storage areas contains colorant for printing information in a form that is invisible to the human eye but readable by the optical reader device, and wherein each storage area is sized corresponding to the expected levels of use of its contents relative to the intended print coverage for a number of printed pages.