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Appendix B: Safety Information
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 print-
ing (while the coronas are energized).
UL Standards for Ozone
The only existing standard for ozone emissions
has been established by Underwriters Laboratory
(UL). All SuperScript 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.
B-2
NEC SuperScript 1260 User's Guide
• 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.
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 con-
fined 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
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