Create or obtain profiles for other devices To obtain precise and consistent color management, you must have ICC-compliant profiles that accurately characterize the color capabilities of all the devices used in your color publishing workflow. For example, without an accurate scanner profile, the colors of a perfectly scanned image may appear incorrect in an application, simply because of any difference between the gamuts of the scanner and the application displaying the image. This misleading appearance may cause you to make unnecessary and potentially detrimental changes to an already satisfactory image. With an accurate profile, an application can correct for any gamut differences and display a scanned image's colors accurately. The profile enables the CMS to convert from a device's native color space to a device-independent reference color space.
Profiles can be generic or custom.
Those included with Illustrator are generic, which means they contain information about the standard color characteristics a device bearing the same name as the profile should produce. For example, the generic profile for an Applevision 1710 monitor contains information that describes the standards for gamma, phosphors, white point, and other characteristics that Applevision 1710 monitors should produce. If your workflow includes using devices at a prepress service provider, also consider asking your service provider for calibrated profiles of their devices. Although generic profiles may produce satisfactory results, profiles created using professional equipment are the most accurate because they contain precise characterizations of the unique color qualities of your specific devices. If you are a high-volume publisher and require tightly managed color, you may want to consider investing in this equipment.