Ozone Emission; General; Employer Responsibilities; Recommendations For Minimizing Ozone E~Osure - HP LaserJet II Serie Manual De Instrucciones

HP 33440/HP 33449 COMBINED SERVICE MANUAL
If necessary, consult your deder or an experienced radio/television technician for additiond
suggestions. The Federd Communimtions Commission has prepared a booMet entitled
lnte~erence Handbook (1986) (stock number 004-000-004505-7) which may be purchased from the
Superintendent of Documents, U.S. Government Printing Office, Washin@on, D.C. 20402.
Ozone Emission
General
The corona assemblies found in laser printers and photocopiers generate ozone gas (03) as a
by-product of the electrophotographic process. Ozone is only generated while the printer is
actually printing (i.e., while the corona assembly is energized). Unde~riters Laboratory (UL) has
established a standard for ozone emissions. Ml LaserJet printers meet this standard when shipped
from the factory.
Employer Responsibilities
Because ozone can be an irritant, various regulatory agencies have e~blished limits to the amount
of ozone to which employees may be exposed. The employer should provide a work environment
that meets the following standards:
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.
At this time, the American Conference of Governmental Industrial Hygienists (ACGIH) has
proposed a ceiling limit of 0,1 PPM for ozone.
Recommendations for Minimizing Ozone Exposure
Mmost dl ozone concerns arise from abnormal site or operating conditions. The following
conditions may generate an ozone complaint
Multiple laser printers in a confined area.
w Efiremely low relative humidity.
Poor room ventilation.
Printer exhaust port directed toward the faces of personnel.
E fisting Ozone Filter in need of replacement (see Chapter 4).
Long, continuous printing combined with any of the above conditions.
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 extremely sensitive to ozone odor. If
this situation is encountered, it is advisable to position the printer away from the sensitive user.
Toner Safety and Care
Toner is a nontoxic substance composed of plastic, iron, and a small amount of pigment. Care
should be taken to avoid breathing toner particles. To clean toner from skin and clothing, remove
as much toner as possible with a vacuum or dry tissue wipes, then wash the toner from skin or
clothing with cold water. Hot water makes toner very difficult to remove. Bemuse toner tends to
be degraded by vinyl materials, contact with vinyl should be avoided.
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