The newest Full Separation Suite on the market: Fast, accurate screen-printing color separations in your browser. InkSplit handles simulated-process, Spot, CMYK and DTF with high-quality, print-ready EPS/PNG output. Includes built in RIP and upscaling and image prep.

What is 4-color separation in screen printing?

4-color separation (also called 4-color process or CMYK separation) breaks full-color artwork into four screens: Cyan, Magenta, Yellow, and Black. These colors combine through halftone dots to reproduce a wide range of colors, similar to commercial offset printing.

When should I use 4-color process instead of spot colors?

Use 4-color process for photographic images, designs with color gradients, or artwork with too many colors for spot color printing. It's ideal for complex designs where using individual spot colors would be impractical or too expensive.

How do I create 4-color separations in Photoshop?

Traditional Photoshop 4-color separation requires converting to CMYK mode, separating channels, generating halftones, and creating an underbase. This manual process takes 30-60 minutes. InkSplit automates the entire 4-color separation workflow in under 2 minutes with superior results.

Do I need an underbase with 4-color process screen printing?

Yes, when printing on dark garments, a white underbase is essential for 4-color process. InkSplit automatically generates optimized underbases that prevent color shifts and ensure vibrant prints on any garment color.

4-Color Process Separation Made Easy

Professional CMYK Screen Printing in Minutes

What is 4-Color Process?

4-color process (CMYK) screen printing uses four halftone screens to reproduce full-color images:

Cyan

Blue-green ink, typically printed at 105° screen angle

Magenta

Pinkish-red ink, typically printed at 75° screen angle

Yellow

Bright yellow ink, typically printed at 90° screen angle

Black

Black ink for depth and detail, typically printed at 45° screen angle

When to Use 4-Color Process

Perfect For:

✓ Full-color photographs
✓ Realistic portraits and faces
✓ Complex color gradients
✓ Designs with 10+ colors
✓ All-over print designs
✓ Photorealistic artwork

Consider Alternatives:

→ Simple 1-3 color logos (use spot colors)
→ Bold graphics with flat colors (use simulated process)
→ Text-heavy designs (use spot colors)
→ Designs requiring vibrant fluorescents (use spot colors)
→ Vintage/distressed looks (use simulated process)

The Challenge of Manual 4-Color Separation

Creating proper 4-color separations manually in Photoshop is technically complex:

Color Space Conversion Issues

Simply converting RGB to CMYK often produces muddy colors and incorrect separations. Screen printing requires specific CMYK profiles optimized for textile inks, not commercial printing inks.

Halftone Screen Angles

Each CMYK color needs precise screen angles (C=105°, M=75°, Y=90°, K=45°) to prevent moiré patterns. Getting this wrong results in visible mesh patterns and poor print quality.

Underbase Calculation

Dark garments require a white underbase, but too much white makes colors pastel, while too little causes transparency. Manual underbase generation is an art that takes years to master.

Total Ink Coverage (TIC)

Screen printing can't handle 400% ink coverage like offset printing. You need to reduce total ink density while maintaining color vibrancy—a complex balancing act.

InkSplit's Intelligent 4-Color Solution

InkSplit handles all the technical complexity automatically:

Smart CMYK Conversion

Custom color profiles optimized for screen printing inks, not offset printing. Maintains vibrant colors while ensuring printability.

Automatic Screen Angles

Perfect screen angles for each channel, preventing moiré while maximizing detail. No manual calculation required.

AI Underbase Generation

Analyzes your design and garment color to create the perfect underbase—enough opacity for color vibrancy without excessive ink buildup.

TIC Optimization

Automatically reduces total ink coverage to screen printing-safe levels while maintaining shadow detail and color accuracy.

4-Color Process Workflow with InkSplit

Upload Your Full-Color Design

Drag and drop your photo or complex artwork. InkSplit accepts RGB images from any source.

Select CMYK Mode

Choose "CMYK" as your separation mode. InkSplit immediately converts to screen printing-optimized CMYK.

Set Garment Color & Preview

Select your shirt color. InkSplit generates the underbase and shows you exactly how the print will look.

Download Print-Ready Files

Export all 5 channels (CMYK + White underbase) as PNG or DCS EPS with perfect halftones. Ready for any RIP.

Ready for Perfect 4-Color Separations?

Stop struggling with manual CMYK conversion. Let InkSplit's AI deliver professional 4-color process separations in minutes.