8.8

Black ink close to patterns
Because the Anoto Pen &Paper technology relies on infrared to read pure-black dots on the
paper, it is imperative that no other black ink interfere with this reading. Though it is possible to
print Capture documents on a black &white laser printer as long as there is no other ink on top
of, or close to, the patterns, this is not recommended. Acolor laser printer should be used, and
any elements placed close to, or on top of, the Capture Patterns should be printed in color.
Black ink can be simulated using composite colors, but should never be pure black.
Paper quality
The PlanetPress Capture technology, when generating the Anoto Pattern, already accounts for
ink dispersion on laser printers and on general-use laser paper. Therefore, using paper that is
not of the same quality (for example, one where the dispersion rate is much higher) or the same
type (reflective paper)may not permit the pen's camera to read the pattern properly.
Page 159