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As you operate your printer, please be aware of the
following safety considerations.
Ozone Emission
The corona assemblies found in laser printers and
photocopiers generate ozone gas (O3) as a by-product of
the electrophotographic process. Ozone is only
generated while the printer is printing (while the
coronas are energized).
UL Standards for Ozone
The only existing standard for ozone emissions has been
established by Underwriters Laboratory (UL). All
Silentwriter family printers meet this standard when
shipped from the factory to our customers.
Employer Responsibilities
Because ozone can be an irritant, various regulatory
agencies have established limits to the amount of ozone
to which employees may be exposed. The workplace
specifications are:
•
A person may not be exposed to an average
concentration of greater than 0.1 part per million
(PPM) of ozone for a period of eight hours.
•
In addition, the employee should not be exposed to
peak concentrations of ozone greater than 0.3 PPM
for longer than 15 minutes.
The employer is responsible for providing a work
environment that meets these standards.
S
I
A F E T Y
N F O R M A T I O N
Recommendations for Minimizing Ozone Exposure
Almost all ozone concerns arise from abnormal site or
operating conditions. The following conditions may
generate an ozone complaint:
•
Installation of multiple laser printers in a confined
area
•
Extremely low relative humidity
•
Poor room ventilation
•
The exhaust port of the printer is directed towards
the face of personnel
•
The existing ozone filter is in poor condition
•
Long, continuous printing combined with any of
the above
Inspect your work environment for the operating
conditions listed above if you believe ozone emissions
are a problem in your area.
Some people may be ultra-sensitive to ozone odor. If
these situations are encountered, it is advisable to
position the printer away from the sensitive user.
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