Olivetti PGL 12en Reference Manual page 8

Ozone Safety
OZONE
Power Saver
During normal operation, the PGL 12en printer produces ozone.
the ozone produced does not present a hazard to the operator.
However, it is advisable that the machine be operated in a well
ventilated area.
If you need additional information about ozone, please request
your nearest Olivetti dealer.
This printer contains advanced energy conservation technology
that reduces power consumption when it is not in active use.
When the printer does not receive data for an extended period of
time, power consumption is automatically lowered.
The energy star emblem does not represent EPA endorsement of
any product or service.
Environmental and Safety Consideration
6