Producing Identity Markers by Electrostatic Printing

A method comprising:

• receiving a toner mixture on an electrostatically charged surface of an image transfer drum in an electrostatic printer system, wherein the toner mixture comprises fusible particles and identity-forming particles, and the toner mixture is held to the electrostatically charged surface by an electrostatic force;
• transferring the toner mixture onto a substrate from the electrostatically charged surface of the image transfer drum;
• and
• bonding the toner mixture to the substrate by operation of a fuser assembly of the electrostatic printer system to produce an identity marker wherein bonding the toner mixture onto the substrate causes the fusible particles to fuse to each other, thereby forming a host matrix that secures the identity-forming particles at fixed locations in the host matrix.

A system comprising:

• an electrostatic printer system comprising:
• a toner cartridge containing a toner mixture, wherein the toner mixture comprises fusible particles and identity-forming particles;
• an image transfer drum comprising an electrostatically charged surface configured to:
• receive the toner mixture from the toner cartridge;
• hold the toner mixture by an electrostatic force;
• and
• transfer the toner mixture to a substrate;
• and
• a fuser assembly configured to bond the toner mixture to the substrate to produce an identity marker by fusing the fusible particles to each other, thereby forming a host matrix that secures the identity-forming particles at fixed locations in the host matrix.