To Ensure the Best Results, Send Vector Graphics in CMYK color-space.

Computer artwork and images are typically in two general formats: Vector and Raster

Vector graphics can be created in programs like Adobe Illustrator, or Corel Draw. The advantage of vector graphics are infinite resolution with a compact file size. Vector graphics are ideal for company logos and other relatively simple graphic designs. For a complete description, follow this link: en.wikipedia.org/wiki/Vector_graphics

Raster graphics can be created in programs like Adobe Photoshop or Corel PhotoPaint, or are created by digital cameras and scanners. The advantage of raster graphics are the ability to capture and reproduce very complex images. Raster graphics have limited resolution. Depending on viewing distance, 100 - 200 pixels per inch (of output resolution) will lead to acceptable image quality in most circumstances. As a general rule, images retrieved from a website will have unacceptable image quality for signs. For a complete description, follow this link: en.wikipedia.org/wiki/Raster_graphics

Color Space: CMYK vs. RGB vs. PMS

In the graphic arts, we typically deal with color in 3 different "spaces"; CMYK, RGB and PMS. CMYK refers to Cyan-Magenta-Yellow-Black; the primary colors in a digital printer. RGB refers to Red-Green-Blue; the primary colors on a computer monitor. PMS refers to Pantone Matching System; a color standard based on mixing 15 different pigments in specified amounts. For a complete description, follow this link: en.wikipedia.org/wiki/Color_space