RGB printers?

[Maverick2002]

just wondering I've read/heard of printers that print in "RGB" mode? Is this possible? I would guess the gamut would still be narrower than true RGB.

 

[Maverick2002]

anyone know?

 

[fumbduck]

like, if you are out of black ink, it onlyprints color?

 

[radioouman]

I've never heard of this... MOnitors are obviously RGB, and it si hard on them to produce white and yellow. I think that it would be very difficult to print yellow if you only have RGB to choose from. White is easy of course.

 

[WinkOsmosis]

That's impossible. Be definition, a printer uses CMY, not RGB. CMY are the secondary colors of light. RGB are the secondary colors of pigments (forget what your art teacher told you).

Light wise:
C = G+B
M = R+B
Y = R+G

Pigment wise:
R= M+Y
G= C+Y
B= C+M

This means that cyan ink reflects green and blue light equally. Yellow ink reflects red and green, etc.
If you mix red and green light you get yellow light.

 

[Howard]

RGB are the primary colors of light.

 

[UnatcoAgent]

Impossible

 

[Ness]

maybe at the professional level, but nothing you'd find at best buy.

 

[Maverick2002]

I know what RGB and CMYK are. But what exactly are these printers that claim to print in RGB. What exactly does that mean? Are they basically just CMYK printers with a larger gamut?