File Preparation Guidelines

Return to Guideline Menu

Digital File Assembly Guidelines

Page Layout

Files should be assembled in a page layout application such as QuarkXPress or InDesign. Logos and vector art should be created in a vector drawing program such as FreeHand or Illustrator. All art elements should be linked, not embedded within other documents unless absolutely necessary. If this is the case, embedded art should also be supplied in its original format. Work-up files, such as Photoshop documents with layers and channels, should also be supplied.

Bleed

Elements that print all the way to the edge of the trim on a page are called bleed elements and should extend in the file beyond the edge of the page by one eighth of an inch minimum. When the finished piece is trimmed, it is impossible to cut all pieces exactly on the edge of the printed area, by extending the art (or bleeding it), the finishing department is assured of all elements trimming consistently.

Vector vs. Bitmap

As stated earlier, logos and vector art should be created in a drawing program such as FreeHand or Illustrator, then saved as .eps and imported into the page layout file. Bitmap based files do not provide a smooth appearance. This rule applies to .tif or .eps files saved from PhotoShop. PhotoShop is a bitmap-based file format and does not support the Bezier curves the vector programs do. This means the bitmaps can be used only at 100% of the actual size or smaller; otherwise they will appear pixilated on the final piece. Alternately, vector art can be sized as large or as small as desired without sacrificing quality. It may take more time to draw correct art than to rasterize or scan something, but the perfection afforded by the vector programs is well worth the effort.

Fonts

PostScript fonts are always preferred for use in file assembly. TrueType fonts, though sometimes used successfully (and are cheap and easy to come by), should be avoided. All fonts used in the creation of your file must be provided to ensure correct processing of your file. Stylizing fonts in the style palette is not recommended, because when using this palette, the application allows you to create fonts that may not actually exist and when this happens, your high-end proof will not look like the hard copy off your laserprinter. The appropriate font must be used by choosing the actual font in the font menu.

Color Specifications

Information regarding the colors actually used in the design should be clearly indicated. Properly prepared files will contain clean color palettes with colors not in use deleted from the palettes and all colors in use residing in palettes identically. Duplicate colors should be merged before releasing a file to any prepress establishment. Spot colors should be identified by the default library name (PANTONE 540 CV) and process colors should be named as a process mix, which indicates the percentage of each process color within the mix (100c55m0y55k). Similarly, multi-inks should be named by the percentage of color in the mix (70% PANTONE 540 with 30% black would appear as 70-540_30k). By naming colors in this manner, you have the opportunity to be sure all colors are created equally. Settings for color mode in Illustrator should be set to CMYK.

CMYK vs. RGB

Because the printing process is a CMYK process, all images should be provided as such. Otherwise, they will have to be converted before proofing. Should you desire GLI to perform any color correction to your images, then please provide RGB images, as the color space is larger and the ability to correct color is greater.

Resolution

The resolution of bitmap images out of PhotoShop must be two times the output line screen frequency. An acceptable resolution for most images is 300 to 400ppi (pixels per inch) when using the image at 100% in your document. This will support 150 lpi up to 200 lpi. If the images are extremely reduced or enlarged in your files, the resolution should be adjusted accordingly. Vector art can also be dependent upon resolution. Settings for output resolution in Illustrator should be set to at least 2400. The setting is found under the file menu\document setup\printing & export output resolution then for each element under color palette\attributes\output.

Proofs

Current hard copy must accompany the job. We check our proofs against your hard copy for accuracy; if no hard copy or incorrect hard copy is provided, it causes unnecessary and sometimes costly delays. Separated lasers help designers to verify that process colors, spot colors, overprints, etc., separate properly before ever releasing files for expensive high-end proofs. Properly formatted PDF proofs are considered acceptable hard copy.

Design Considerations

• Avoid process color mixes on small typeface, fonts with thin strokes and very thin rules.
• Avoid reversing small typefaces, fonts with thin strokes and very thin rules out of fields made up from process color mixes.
• Be aware of overprint settings. If used intentionally, they should be clearly noted and white should NEVER overprint, as this renders white to be invisible.

Return to Guideline Menu