ENCODING LIQUID INK WITH A DEVICE SPECIFIC BIOMARKER

• Main Authors: LEWIS Jeremy Brook, WILSHER Michael John
• Format: Patent
• Language: English
• Published: 08.06.2017
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LINING MACHINES; MEASURING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICS; POLISHES; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TESTING; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

What is disclosed is a method for encoding liquid ink with a biomarker which can be traced back to a specific inkjet printer. In one embodiment, an aqueous solution containing a biomarker is combined with a volume of liquid ink. The biomarker comprises a nucleic acid. An ordering of nucleobases forming that nucleic acid has a code sequence. In one embodiment hereof, the nucleic acid is constructed using a code sequence which contains, at least in part, the device specific serial number of the inkjet printer. The encoded liquid ink is added to an inkjet printer and the code sequence encoded in that ink is associated with that particular inkjet printer. The inkjet printer is then used to deposit the encoded ink onto a media substrate. In other embodiments, a fluorescent marker is also added with the volume of liquid ink such that the ink fluoresces under an ultraviolet light.