N_Cook wrote:
Jim Yanik wrote in message
...
"N_Cook" wrote in
:

David Nebenzahl wrote in message
.com...
On 6/13/2009 5:42 AM Jim Yanik spake thus:

toner is a wax compound.waxes are also lubricants.
That's not my understanding: from what I've read, toner is basically
a mixture of pigment (carbon black or equivalent) and plastic
(styrene) that melts onto the printed substrate (paper).

Maybe you're thinking of phase-change/sublimation printing (e.g.,
Xerox/Tektronix Phaser), which does use wax as the carrier.
Heh.I worked for TEK for 21.5 years.
their thermal wax process is a sort of wax-jet deposition thru a
printhead.
I've had pretty good looks at TEK's printer mechanics.

just feel the toner that's fused onto the paper;it feels waxy.
Googling showed several references to wax for copier toner.


--
Found--the gene that causes belief in genetic determinism

I would agree with that summary but add that there are surfactants
added to assist in even distribution of the toner over the OPC,
otherwise the coarse distribution of the iron filings transfer process
would be rather patchy.

Isn't it done by electrostatics?

--
Jim Yanik
jyanik
at
kua.net


The rotating magnets + iron filings bring the toner close to the OPC

Modern laser printers & copiers use monocomponent toner, which has the
magnetic material in each toner particle. You're thinking of older
systems, which used a separate magnetic 'developer' powder to carry the
toner to the drum.



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