Patent ID: 9566800
Date: 2017-02-14
CPC Classifications: B41J,B42D

Claim:
1. A system for producing a security feature on a physical printed document, the document having a first image printed with a marking substance on a first side of a piece of medium and bonded to the first side of the piece of medium to form a bonded printed first image of the marking substance, the first image having a security portion and a remainder portion, the system comprising: a security portion forming device that melts only a predetermined portion of the bonded marking substance less than the bonded printed first image of marking substance, the predetermined portion forming the security portion of the first image such that the security portion soaks into the piece of medium and is visible by an average human eye in standard office lighting from a second side of the piece of medium, the second side being opposite to the first side, wherein the bonding of the marking substance to the first side of the piece of medium is formed before the security portion forming device melts the predetermined portion of the bonded marking substance, wherein the security portion is less than the entire first image, and the remainder portion of the first image is equal to the entire first image less the security portion.