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Digital BW, The Print

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Message

Number of tones was Re: Do inkjets dither or not?

2002-08-04 by tboleyyh

--- In DigitalBlackandWhiteThePrint@y..., "Ernst Dinkla" <
e.dinkla@c...> wrote:
snip
> I was intrigued by a message from Jon Cone...
snip
> Krawitz mentions something...
snip

Hi Ernst,
I recall a very intriguing, however cloaked, conversation between Cone 
and Krawitz on the Leben list some time ago about all this. It's over 
my head I'm afraid.
My comments have all been about utilizing multiple channels and inks to 
"extend" monochromatic scale.
There is clearly much going on at the driver/printer level as well. 
That the Piezo driver addresses the printer differently than the Epson 
driver seems obvious. It's maximum allowable image area for a given 
page setup size is different, and watching the ink go down one can 
observe obvious clear bands or rows as it proceeds as opposed to the 
soft progression of ink the Epson driver puts down. I think this is 
part of the reason Jon says the driver doesn't dither. The definition 
of "dither" seems to be the problem, and in this case is more related 
to Photoshop's dither option than the actual creation of printing dots 
from pixels. I have seen RIPs that allow user adjustable "multi-pass" 
options, so there seem to be several options at driver level software 
design.
I don't pretend to know anything about that end of things, just some 
dangerous uninformed suppositions.
Tyler

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