go buy RGB cartridges
A standard printer will have 4 colors. Cyan, Magenta, Yellow, and Black (CMYK)
It depends on the file's color mode (RGB or CMYK), and the output printer. Most computer monitors are RGB (Red, Green, and Blue) color based, as are the majority of printers used by most non-professional users. As such, the file you're working in should be RGB, and rendered/printed as RGB to ensure what you see on screen will look like what's printed on paper. Print publishing graphics have always used a 4 color process, CMYK (Cyan, Magenta, Yellow and Black). In addition to the file being CMYK, the output printer should also be CMYK. Many higher-end printers are now CMYK. Sharp's new Aquos Quattron monitor technology is a step toward finally making monitors 4 colors instead of the CRT based 3 colors they were originally designed to handle.
When talking about color printer toner the letters CMYK refer to the colors Cyan, Magenta, Yellow, and Key all part of the toner itself. Key is almost always a black, however it can be other colors at times.
If you're printing the image on your desktop printer, use RGB--those printers will convert anything else to RGB, then to CMYK. If you're printing it on a wide-format inkjet printer like a Roland, Mutoh or VUtek, or you're sending it to a printing plant to be printed on an offset or flexo press, use CMYK if you're not using spot colors, and Pantone for the spot colors.
It depends on the file's color mode (RGB or CMYK), and the output printer. Most Computer Monitors are RGB (Red, Green, and Blue) color based, as are the majority of printers used by most non-professional users. As such, the file you're working in should be RGB, and rendered/printed as RGB to ensure what you see on screen will look like what's printed on paper. Print publishing graphics have always used a 4 color process, CMYK (Cyan, Magenta, Yellow and Black). In addition to the file being CMYK, the output printer should also be CMYK. Many higher-end printers are now CMYK. Sharp's new Aquos Quattron monitor technology is a step toward finally making monitors 4 colors instead of the CRT based 3 colors they were originally designed to handle.
PC = process coated ec = euro coated
sepia cmyk 0%, 60%, 81%, 63%
CMYK - EP - was created on 2010-05-28.
The underlying color model in Photoshop is neither RGB nor CMYK but LAB. It has the widest gamut, which means it can hold more color values than any other model. Of the two other models, RGB has more color values than CMYK does. When you convert from RGB to CMYK, the program first "maps" the RGB values into the LAB colorspace. It then maps the LAB values into the CMYK colorspace. Now, for REAL entertainment...take a pure RGB blue, or a pure RGB green, and attempt to map it into CMYK colorspace. It doesn't work at all. Red maps fine, but the other two go straight to hell.
The dominant colors are red and yellow in the following CMYK delineations.Red: CMYK (%) 0-90-80-5Yellow: CMYK (%) 0-15-95-0There is also the seal of the Kingdom of Spain, which has numerous colors on it.
document is what you see on your screen and print output is what will look like when you send it to printer. there can be small difference because screen and printer work different with colors, screen colors are rgb and they must be translated to cmyk colors in most cases to print properly.
RGB has a larger gamut than CMYK. In order from small to large: sRGB, AdobeRGB, ProPhoto RGB. The largest of the CMYK gamut is GRACoL.