Physical components of a CD and their effect on design – Knowligent
Physical components of a CD and their effect on design

Physical components of a CD and their effect on design

HomeHow to, TechPhysical components of a CD and their effect on design

The individual components of a CD present unique graphic challenges and opportunities for desktop publishers and designers.

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In this article, we’ll dissect a CD and analyze the anatomy it produces, explaining how the different components affect your CD design. Knowing what medium you’re designing for will help you avoid nasty surprises in the final product.

The main body of the disc: This is where the audio or data is encoded. Colors printed on this surface appear darker than on white paper. Depending on the ink coverage, varying amounts of the silver surface will show through. Higher ink coverage (darker colors, generally) means you will see less of the reflective surface showing through. Lower ink coverage, with print dots spaced farther apart (lighter colors, generally) will reveal more of the underlying disc surface. The only way to make something appear white on the surface of the CD is to print with white ink.

This is the ring area just inside the main print area. The mirror band is not encoded with data, so it has a different reflective quality, making it appear darker than any other part of the CD. Typically, the mirror band is etched with the manufacturer's name, as well as a number or barcode identification. The effect of printing on the mirror band is to darken the text or images compared to the main print area. Just inside the mirror band is the stack ring.