Paper requirements Paper parameters to consider when producing a paper product enabling Anoto functionality are:

1. Opacity - Must be high enough, so that the pen does not see print on the backside of the paper or on the following page.

2. Color - The color must have high reflection in the IR wavelengths 800– 950 nm, which leads to restrictions on the paper color.

3. Surface roughness - Surface roughness of the paper must not be too high. A very rough paper will give dots of low quality.

4. Paper and toner interaction - Note: Smearing or scuffing can ruin the Anoto functionality. Therefore the risk for such effects must be considered when choosing paper and toner.

5. Paper - Uncoated paper with weights > 60g/m, Opacity >88%, Surface roughness, Bendsen (ml/min) between 100– 400

6. Toner

a. Pattern toner used must have a high absorption in the wavelengths 800–950 nm. Black toner containing carbon should be used (black standard toners normally contain carbon). For improved contrast, consider a black toner with high pigment content.

b. Graphics and text toners used must have low absorption in the wavelengths 800–950 nm. Examples of toners allowed: Cyan, Magenta and Yellow. Examples of toners not allowed: Black toners containing carbon, Metallic toners or any other toner absorbing IR light.