• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint

Terms and Concepts

  • BleedIn many cases the paper is larger than the print area. To ensure that the ink extends all the way to the area that will be cut from the larger paper, a bleed is used. Without the bleed, a tiny error in trimming the paper can result in an unwanted white line in places where the design should go to the edge. Bleed extends the ink past the crop marks from 0 to 72 points. Illustrator's default is 18 points and can be changed in the Separation Setup dialog box.

  • BlendA blend is the artwork that results when two or more objects on the artboard are blended. Illustrator creates a series of intermediary objects to produce the appearance of a smooth transition from one object to another. (Blends were discussed in Chapter 9, “Working with Blends.”) Blends are important to printing because of their complexity. Although some blends can be simple, others, especially smooth color blends, can create printing problems. (See also gradient.)

  • Choke— In trapping, the process of extending the surrounding light color onto an enclosed dark color is called choking. (See also spread and trapping.)

  • CMYKCyan (C), magenta (M), yellow (Y), and black (K) are the four process colors used in commercial printing. Artwork being prepared for color printing must be in this color mode. RGB illustrations and images cannot be separated for printing. (See “Color Issues,” later in this chapter, and Chapter 12, “Understanding and Applying Color.”)

  • Color stitching— Color stitching is the undesirable visibility of the transition from vector to raster artwork in an image. It occurs when a printer handles the two types of artwork differently. You can control color stitching by changing the Quality/Speed slider to a higher setting in the Transparency panel of the Document Setup dialog box. When color stitching appears onscreen rather than from the printer, you can uncheck the Anti-aliased Artwork option in the general preferences (Edit, Preferences, General).

  • Contract proofThe final approval of a piece of work before printing of the final separations and printing plates is called the contract proof. After the contract proof is approved by the client or other approving authority, the job should roll. The contract proof is the standard against which the final production project will be measured. It is critical that the proofs be prepared properly and using the correct technique. Digital proofs should not be used for a job that will eventually be printed from film-based plates. Likewise, creating a laminate proof for a digital output job opens the door to inaccuracy. Final approval of the contract proof is normally in writing, and the contract proof is used to ensure accurate color during the press check. (See also press check.)

  • DuotoneWhen only two colors are used to create an image or illustration, it can be considered a duotone. Although Illustrator does not call it such, if only two colors of ink will be used to produce the image, that's what it is. When preparing separations for a duotone, you must ensure that the option Convert to Process is not selected in the Separation Setup dialog box (see Figure 25.1).

    Figure 25.1. The Separation Setup dialog box will be explained fully later in this chapter.

In addition, you don't need to print the separations that will carry no information. Simply select the two colors used to compose the artwork. (See also tritone.)



Not a subscriber?

Start A Free Trial

  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint