Dual infrared gloss effect

A system for rendering a gloss effect on a recording medium, comprising:

• at least one processor and a memory, the memory storing instructions to cause the at least one processor to perform
• rendering a foreground pattern using a first ink composition comprising infrared absorbing colors, wherein said first ink is lightened with lightening parameters by the addition of paper white holes;
• rendering a background pattern using a second ink composition comprising a process or spot color, wherein said second ink is darkened with darkening parameters by the addition of infrared absorbing colors comprising different amounts of infrared absorbing colors than that of the first ink composition;
• adjusting the lightening parameters and the darkening parameters to ensure that the first and second inks appear approximately the same at printed sizes;
• introducing anisotropic properties to the first and second inks, causing non-uniformity in their reflection of light in different directions when viewed under a light source, thereby creating a gloss effect renderable on a recording medium;
• and
• embedding an infrared (IR) signal within the gloss effect, enabling detection of the gloss effect using an IR sensor or an IR device.

An apparatus for rendering a gloss effect on a recording medium, comprising:

• a foreground pattern electronically created using a first ink composition comprising infrared absorbing colors, wherein said first ink is lightened with lightening parameters by the addition of paper white holes;
• a background pattern electronically created using a second ink composition comprising a process or spot color, wherein said second ink is darkened with darkening parameters by the addition of infrared absorbing colors comprising different amounts of infrared absorbing colors than that of the first ink composition, wherein the lightening parameters and the darkening parameters are adjustable to ensure that the first and second inks appear approximately the same at printed sizes;
• anisotropic properties introduced to the first and second inks, causing non-uniformity in their reflection of light in different directions when viewed under a light source, thereby creating a gloss effect renderable on a recording medium;
• and
• an infrared (IR) signal embedded within the gloss effect, enabling detection of the gloss effect using an IR sensor or an IR device.