Determining which kind of cover layout to use?
Full Cover Layout
- Simple cover layout
- Use one page for the back cover, one page for the back cover, and on page for the spine. Crane will make you a spine if you do not supply one.
- Basic cover layout
- Use a full Cover Mechanical.
When you lay out the cover of a book in a desktop application, make sure that the front and back covers, as well as the spine are designed as one contiguous page. To determine the size of your cover layout page, follow the guidelines below.
This .25-inch white space allows us to place the necessary trim, registration and color identification marks which will be used by our pressmen during printing.
Any background color or photograph that extends to the edge of the page after trimming is called a bleed. To ensure ink coverage to the bleed edge, we need the image or background color to extend .25 inch beyond the trim. This area will be trimmed away after printing. Note that neither trim nor registration marks should be placed inside the bleed area.
Size of finished book.
The spine of a book varies in size, depending upon the number of pages and paper type. To determine a book's spine size, divide the number of pages by the paper's thickness, measured in "pages per inch" (ppi).
Crane's 50# paper is 520 ppi
Crane's 60# paper is 426 ppi
Crane's 70# paper is 320 ppi.