Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., "Bob Obenland" 
<bobenland@m...> wrote:
> As one who stared at the heads passing over the paper
> in my (partially disassembled) 3000 for too many hours,
> the dot pattern (dither) is very different in the v6 driver than
> the original piezo driver. 
> 
> Long ago this was a main topic on the piezo list.
> The "unforgiving" nature of the original driver
> required absolutely perfect paper feed to avoid banding.
> To my eye the v6 driver uses something similar
> to the famous epson dither combined with
> a) separation of tones into ink channels and
> b) tighter dot placement.
> 
> If you watch the leading edge of the image
> with v6, the image "develops" in a soft gradation
> as the head makes successive passes. The old driver
> used to create distinct bands of tone trying
> to do everything at once.
> 
> This is with my 3000 only.
> No knowledge of anything else.
> 
> ;-))
> 
> Thanks
> Bob

This makes perfect sense. I wonder if v6 is actually using the Epson 
driver in this area on the newer printers with smaller droplets and a 
modified version for the older printers to take into account the 
larger droplets? What you described about the older driver is what I 
was saying in terms of one row of nozzles acting in a linear fashion 
to accomplish what the Epson driver does with multiple rows. Which 
leads me to think that now if it is progressive, either a form of the 
Epson driver is being used, or maybe rows of nozzles are now being 
paired.

With the v6 driver have you lost speed in print time? If so, is it 
roughly the same speed as the Epson driver or slightly faster?

Thanks,

Terry