HP 9500 Manuale Utente

Pagina di 45
D–4
Reference Guide
TCO‘99 Requirements
The relevant TCO'99 demand requires that plastic components 
weighing more than 25 grams must not contain flame retardants 
with organically bound bromine or chlorine. Flame retardants are 
allowed in the printed circuit boards since no substitutes are 
available.
Bioaccumulative is defined as substances which accumulate 
within living organisms.
Cadmium
Cadmium is present in rechargeable batteries and in the 
color-generating layers of certain computer displays. Cadmium 
damages the nervous system and is toxic in high doses. The 
relevant TCO'99 requirement states that batteries, the 
color-generating layers of display screens and the electrical or 
electronics components must not contain any cadmium.
Cadmium is a heavy metal that is Bioaccumulative.
Mercury
Mercury is sometimes found in batteries, relays and switches. It 
damages the nervous system and is toxic in high doses. The 
relevant TCO'99 requirement states that batteries may not contain 
any mercury. It also demands that mercury is not present in any of 
the electrical or electronics components associated with the 
labelled unit. There is however one exception. Mercury is, for the 
time being, permitted in the back light system of flat panel 
monitors as there today is no commercially available alternative. 
TCO aims on removing this exception when a mercury free 
alternative is available.