Let’s take each type in turn to understand what you can do. Remember, you can use more than one on a single document.
Xerox MicroText Mark
The clue is in the name with a MicroText Mark – it creates characters in a downloadable font too small for the naked eye, in sizes smaller than 1 point. It looks like dots until you pass a magnifying glass over the document.
Xerox GlossMark
A GlossMark is invisible when you look at a document head-on but visible when you tilt the page into the light. You can use GlossMark to hide text or images (for text you will need to download a font).
It works on colour machines only.
Pantograph Technology
Some documents show new words when they are photocopied; it is pantograph technology that makes this possible. Certificates, for example, could show the word ‘VOID’ when duplicated.
You can create this effect on both colour and mono devices.
Xerox Fluorescent Mark
This one also only works on colour devices. A Fluorescent Mark looks like a speckled box on the resulting print. It’s very difficult to work out the message in daylight, but it can be read simply under a UV or black light.
Xerox Infrared Mark
Again, the Infrared Mark looks like a coloured box to the naked eye. However, an infrared camera will pick up printed text or imagery. You can achieve it only on colour presses.
Xerox Correlation Mark
To the naked eye, a Correlation Mark looks like a box with a pattern, perhaps diagonal lines. The security marking within can be ‘unlocked’ with a corresponding unique transparency (aka validation key). When the transparency is overlaid, the hidden message appears.
Different patterns can be used between different prints to increase security even further. What’s more, two patterns can be used together so that the image reveals a different message with each transparent ‘key’.
Correlation Marks require a font download.
Learn more about all of these marks through Xerox documentation:
Xerox FreeFlow Variable Information Suite
Xerox Speciality Imaging: Fraud Deterrent Technology
