Adobe Illustrator - Rich Black RGB

Author

Rich Black RGB

natjordan@gmail.com

2005-10-09, 3:15 am

For my last offset printing project, I used 53 C 50 M 50 Y 93 K for a
good rich black. I am now making a poster that will be digital press
printed, and I'm required to submit in RGB. To get a rich black in
RGB, what combination should I use?

I'm not sure I have a grasp on how RGB documents print.

Thanks,
Nat

iehsmith

2005-10-09, 3:15 am

On 10/8/05 9:40 PM, natjordan@XXXXXXXXXX uttered:

> For my last offset printing project, I used 53 C 50 M 50 Y 93 K for a
> good rich black. I am now making a poster that will be digital press
> printed, and I'm required to submit in RGB. To get a rich black in
> RGB, what combination should I use?
>
> I'm not sure I have a grasp on how RGB documents print.

Hmm... the only time I've designed for digital press it was an HP indigo and
CMYK/Process was used. As with:
http://imagers.com/digiprint/pressSS.html

That aside, AFAIK, in RGB Black is the absence of color; 0%-0%-0%. Not
knowing anything about RGB printing for digital press, I'd say to refer to
the printer, possibly ask for a printer profile and ask about saturation and
gamut. Just guessing. Might you actually be dealing with inkjet or die-sub?
Hopefully someone with broader experience will reply.

You might also try the comp.publish.prepress newsgroup, but supply them with
as much detailed info as possible; they will ask;)

inez

natjordan@gmail.com

2005-10-09, 10:14 pm

> That aside, AFAIK, in RGB Black is the absence of color; 0%-0%-0%. Not
> knowing anything about RGB printing for digital press, I'd say to refer to
> the printer, possibly ask for a printer profile and ask about saturation and
> gamut. Just guessing. Might you actually be dealing with inkjet or die-sub?
> Hopefully someone with broader experience will reply.

I am not sure. I am getting in touch with the printers and I'll post
in comp.publish.prepress, too. Thanks for your help.

Marc Clamage

2005-10-27, 10:14 pm

Gick! I remember when printers wouldn't accept RGB files and you had to
convert them to CMYK. Even when you send an RGB file to an inkjet printer it
RIPs it on the fly and prints in CMYK. Why would any professional service
bureau prefer RGB (which is basically for viewing on screen) to CMYK?

<natjordan@XXXXXXXXXX> wrote in message
news:1128903889.697700.53980@g14g2000cwa.googlegroups.com...
>
> I am not sure. I am getting in touch with the printers and I'll post
> in comp.publish.prepress, too. Thanks for your help.
>