Canon imageRUNNER 3300 Reference Manual page 36

s Avoid poorly ventilated locations.
During use, the machine generates ozone. However, the amount of ozone generated is
not enough to affect the human body. Nevertheless, if the machine is used for a prolonged
period of time in a poorly ventilated room, or when making a large quantity of prints, be
sure to ventilate the room to make the working environment as comfortable as possible.
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s Avoid locations where a considerable amount of dust accumulates.
s Avoid locations where ammonia gas is emitted.
s Avoid locations near volatile, flammable materials, such as alcohol or paint thinner.
s Avoid locations which are subject to vibration.
For example, avoid installing the machine on unstable floors or stands.
1-4 About the Installation Location and Handling