Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "derekhawkins" <eldata@...> 
wrote:
>
> >If you print an all-black
> >pattern, whether it's in draft or text or photo mode, it should
> >always use just the black ink
> 
> Depends on the media chosen and the resolution. IIRC, you cannot 
> choose "black ink only" with photo media at high resolutions on any 
> Epson inkjet regardless of the color content to be printed....Hence, 
> the printer never uses black ink only on its own with those settings 
> regardless of the color content.
> 
> --- In Homebrew_PCBs@yahoogroups.com, "fenrir_co" <fenrir@> wrote:
> >
>

"Black ink only" is a setting that people tend to use in order to 
conserve the color carts when the printer is set up for general use. 
If you set the printer to 'black and white' but not 'black ink only', 
it will still use the color tanks in order to reproduce images in a 
decent greyscale. If you use 'black ink only', it will force the 
printer to NEVER use the color cartridges for greyscale, instead the 
greyscale will be a dithered image created out of tiny dots of black 
ink. If the image itself is solid black, then setting black ink only 
should not have any effect on the output. For my Epson R340, it 
doesn't matter what quality setting the printer is in, if the image 
is solid black, then the printer only uses black ink. 'Black ink 
only' only has an effect on greyscale prints. It is not selectable for 
photo printing because dithered black is hardly photo quality and 
would be a waste of paper and ink. I just find it highly unlikely that 
any modern printer would try to create black out of triple colors.