2024/01/06 by Sign20 LLC

Setting Up Design Files for Digital Printing

Creating impactful large format prints or signage requires meticulous planning and a keen eye for detail. Here are the key steps to ensure your design files are optimized for the best results.

1) Choosing the Right File Format

The initial step in designing signage is selecting an appropriate file format. PDF/X-4 is ideal for large-scale graphics, but we also accept high-quality files from Adobe InDesign (packaged), Illustrator (packaged), Photoshop, as well as JPGs, and TIFFs.

2) Converting Text to Outlines

To prevent text from pixelating when scaled up from a smaller screen, it’s essential to embed, package, or convert fonts to outlines. This ensures that the text retains its quality at any size.

3) Vector vs. Raster Graphics

Graphics can either be vector (e.g., EPS) or raster (e.g., JPEG). Vectors use mathematical formulas to create shapes, while rasters are pixel-based.

Vector Graphics

Advantages:

• Scalability without quality loss
• Smaller file sizes
• Easily editable

Disadvantages:

• Limited detail in intricate images

Raster Graphics

Advantages:

• High detail in complex images
• Allows precise editing

Disadvantages:

• Can become blurry when enlarged
• Larger file sizes

For most signage, vector graphics like EPS, AI, and PDF are recommended for their scalability and quality.

4) Color Models for Printing

Use the CMYK color model for print files. While RGB has a broader color spectrum suitable for screens, it doesn’t translate well to print. CMYK provides the best color fidelity in printed materials.

Pantone Colors

Pantone Matching System (PMS) helps in converting Pantone colors to the closest CMYK equivalents. Note that exact color matches cannot always be guaranteed.

Transparency Handling

Mixing CMYK and Pantone transparencies can yield unexpected results. Flattening these elements into raster and vector segments ensures print accuracy.

Safe Zones for Text

Maintain a text-safe area that is 96% of your document's width and height. This prevents text from being too close to the edges and ensures a cleaner layout, especially for banners with grommet holes.

5) Bleed Specifications

Include a bleed in your design if any images or graphics reach the edge of the page. This extension prevents white edges or cut-off elements in the final product. The required bleed size depends on the sign's dimensions.

6) Image Resolution

Large format prints require high-resolution images. Build a scaled file and adjust the resolution accordingly. For example, if your file is at half scale, double the DPI to maintain a minimum of 300 DPI at full size.

The recommended DPI varies with viewing distance. Closer views require higher DPI for clarity.

7) Shape-Cut Signs

For shape-cut projects, include a clear cut path on a separate layer marked “cut-line”. Use a one-point vector path in a contrasting color to stand out. For decals needing weeding, provide a reference file to indicate which parts to remove and which to keep.

By following these steps, you'll ensure your signage and large format prints are of the highest quality and visually impactful. If you have any further questions or need assistance, feel free to reach out!