Printer cartridge including machine readable ink

Details Printer cartridge including machine readable ink Printer cartridge including machine readable ink

2005-01-11

2005-01-11

Meier, Stephen D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S087000, C347S088000, C347S089000

Reexamination Certificate

active

06840606

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 includes a housing defining a number 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. The colorant for printing information in a form that is invisible to the human eye but readable by the optical reader device is infrared absorbing ink.

REFERENCES:
patent: 5160535 (1992-11-01), Cooke et al.
patent: 5414262 (1995-05-01), Filo
patent: 5542971 (1996-08-01), Auslander et al.
patent: 6106110 (2000-08-01), Gundjian et al.
patent: 6137512 (2000-10-01), Higuma et al.
patent: 6290349 (2001-09-01), Silverbrook et al.
patent: 6428155 (2002-08-01), Silverbrook et al.
patent: 72230 (2000-11-01), None

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