Laser/photocopier toner is a powder comprising essentially a wax and a
finely ground pigment. I would be VERY surprised if black toner
contained anything reprehensible, as the pigment is essentially carbon
black, which is produced industrially by the condensation of sublimed
carbon produced by burning a hydrocarbon with insufficient oxygen to
ensure complete combustion (e.g., the black deposit on the chimney of an
oil lamp with too much wick exposed). Coloured toners may be different,
but I doubt whether pigments like cadmium yellow or litharge would be
used, as grinding them would be a very hazardous process.

I would also be very surprised if the wax could contain any
RoHS-designated substances, either.

But have you thought about the label itself or its adhesive? :-) :-)

Brian

Dion, Mario wrote:
> Bonjour TechNeters,
>
> Here is a question about RoHs. One customer is requesting that we comply
> with RoHs and mentionned that there could be a concern with laser ink used
> on the product labels we affix on finish products.
>
> I have made some verifications with HP but have not get any firm answer as
> of yet.
>
> Do you ever heard about a problem for the ink to comply with RoHs
> requirements ?
>
> Thanks for your collaboration
>
>
> Mario Dion, A.Sc.T.
> Sr Project Manager
> Solectron EMS Canada Inc.
>
>
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