Digital BW, The Print

Terry,

I see where you're going - certainly, mentally separating the charging cycle
from the ejection (should that be 'giclee') cycle makes a lot of sense.

As I don't understand the detailed physics, I am still having trouble
understanding how the final voltage would effect only droplet size - one
logic says "If I have 5cc of ink in a syringe, and I pump the syringe, I'll
get a 5cc of ink out whichever way" - another says something a bit more in
line with your point - if I fill a bottle with a pint of water, you can
still control (to some extent) how much water flicks out when you flick the
bottle... and you would do that with control of speed and 'impulse' (how
quickly you stop) which may in some way reflect the ideas of frequency and
voltage in the control signal.

Hmmm

4:30am

bed time

<sudden clarity on why I have no life>   :)

Nij

> -----Original Message-----
> From: TerryR [mailto:terryr1028@...]
> Sent: 05 October 2001 04:13
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: Dithering THOUGHTS
>
>
> --- In DigitalBlackandWhiteThePrint@y..., "Nij" <nigel@m...> wrote:
> > Terry,
> >
> > I'll be interested when you think of a way!
> >
> > Nij
> >
> > > -----Original Message-----
> > > From: TerryR [mailto:terryr1028@h...]
> > > No, the actual ink density of the droplet, but I can't think of a
> way
> > > to express it so that it would make sense at the moment....
>
> Nij,
>
> I am not sure this will express it, but here goes:
>
> If you can control the voltage through timing you can still get the
> same sized dot since the voltage is brought to what it would normally
> be at the point of actually firing, but the overall density of the
> droplet would be lower as a result. In reverse you could increase the
> droplet density by overcharging and then reducing to the firing
> voltage. Since the final voltage determines the droplet size, then by
> varying the timing you change the overall density by changing the
> available ink at that point to be fired. I don't know if that makes
> any sense at all to you, but at the moment my gray matter is
> insisting on a rest, and it is the best it will allow me to offer.
>