1. RGB Images

We use CMYK Process Color on all of our HD Waterless Presses, Digital Presses and Large Format Imagers. Please do not use RGB or Index images as they are blind converted to CMYK by our RIP software, sometimes with unpredictable results. Please convert RGB images to CMYK so you can make color adjustments if you are unhappy with any color shifts resulting from the conversion. In Photoshop, work in CMYK mode. The only exception to CMYK would be a Spot Color job specifically designed to use Pantone PMS inks. Please note that RGB images cannot be converted to spot colors.

2. RGB Preview (Adobe Illustrator)

Illustrator files created in RBG/Preview will be blind converted to CMYK by our RIP software and color shifts can occur. The same applies to Illustrator files placed within other programs. When setting up Illustrator files, choose CMYK as the Document Color Mode under the File menu and work in CMYK/Preview only.

3. RGB Black Type

RGB Black type becomes multi-color type when converted to CMYK. Small, multi-color type can be difficult to register over a large sheet on the press, and may even present a color halo effect. We recommend setting small type in 100% Black, especially in Photoshop. Be aware that programs limited to RGB palettes, such as Word and most versions of Publisher can cause problems in this regard and may require reformatting at an extra charge.

4. Heavy, Rich Black

Rich blacks are most commonly used to create rich looking backgrounds, large black accent areas and large headline type. Our recommended mix for rich black is 40% Cyan, 30% Magenta, 20% Yellow and 100% Black (40,30,20,100). In Photoshop, use our mix rather than the default black (88,76,69,96) for large backgrounds to avoid excess ink coverage and associated problems. Avoid using rich black for small type for the reasons mentioned in #3 above. Hover here for a visual example of rich black vs. 100% black.

5. Resolution Should Equal 300 ppi at 100%

When working with acquired or existing images in Photoshop, make sure they are at least 300 ppi resolution at 100% of the final printed size. When purchasing photos from internet photo banks, select a size and resolution equal to or greater than the size needed in your document.

6. 72 ppi Images

72 ppi images at 100%, such as those appearing on or copied from websites, are not acceptable because they will appear severely pixelated on your final printed document. Photos taken with digital cameras may be 72 ppi, but as long as they are at least 4 times larger than the final printed size they can still be perfectly acceptable when reduced. Hover here for a visual example of 300 dpi vs. 72dpi.