On 08/14/2011 03:03 PM, John Honniball wrote:
Tony Duell wrote:
Obvious ones would include :
Particle size
Fusing tempearture
Electrical conductivity
Permitivity?
Any others (and which of those really matter?)
How about magnetic properites? The old DEC 03 toner was magnetically
attracted within the printer onto a roller before being
electrostatically attracted onto the drum. Presumably, it
contained some iron or iron compound.
Yes, and in fact in one engine I've seen (might have actually been
the CX or the SX, or maybe the Ricoh, I don't recall) the toner is
Yes, you're right. I think both the CX and SX enginers do this.
"splayed out" by a linear magnet underneath
a roller, like whiskers, to
make contact with the drum.
I thought that in at least one case the roller itself was magnetic.
I would think that while some printer engines would require a magnetic
toner, there would be none that would rquire a non-magnetic one (if all
oterh paramters were correct -- of course it may be that all materilas
that meet said parameters turn out to be non-magnetic, but that's not the
issue).
I am going to have to dig out my copy of 'Electrophotography' and see
what it says about the toner.
-tony