HP Color LaserJet 4600 Printer series - Manual (Page 216)

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Safety statements
Laser safety
The Center for Devices and Radiological Health (CDRH) of the U.S.
Food and Drug Administration has implemented regulations for laser
products manufactured since August 1, 1976. Compliance is
mandatory for products marketed in the United States. The printer is
certified as a “Class 1” laser product under the U.S. Department of
Health and Human Services (DHHS) Radiation Performance
Standard according to the Radiation Control for Health and Safety Act
of 1968. Since radiation emitted inside the printer is completely
confined within protective housings and external covers, the laser
beam cannot escape during any phase of normal user operation.
WARNING! Using controls, making adjustments, or performing procedures other
than those specified in this user guide may result in exposure to
hazardous radiation.
Canadian DOC regulations
Complies with Canadian EMC Class B requirements.
« Conforme á la classe B des normes canadiennes de compatibilité
électromagnétiques. « CEM ». »
EMI statement (Korea)