Four Color Process Separation for Screen Printing

Four-Color Process Screen Printing is a method of printing that uses four colors (Cyan, Magenta, Yellow, and Black) to produce full-color images.

1. Four-Color Process Screen Printing

Cyan, Magenta, Yellow and Black are also called Process Colors and are used in Four-Color Printing to reproduce other colors.

CMYK color model
4 Color Separation

Some colors such as green and orange are especially difficult to reproducing in the CMYK model. If you want that green and orange were brighter and saturated, they can be printed as additional Spot Colors.

Spot and Process Colors CMYK and Spot Channels

Fluorescent and metallic colors cannot be printed by mixing of four process colors. These colors also should be printed as additional Spot Colors.

Four-Color Process for silk-screen printing differs from traditional offset printing.

The following table shows the basic differences between printing technologies.

Description Offset Printing
Screen Printing
Four-Color Process Separation: - The CMYK file should be created from RGB channels with the color separation software.
Screen Frequency: 65 - 177 LPI
(Lines per Inch)
45 - 65 LPI
(Lines per Inch)
Standard Screen Angles:
Cyan: 105 degrees 15 degrees
Magenta: 75 degrees 45 degrees
Yellow: 90 degrees 75 degrees
Black: 45 degrees 75 degrees
Dot Shape: Round Dots Elliptical Dots

2. Color Separation Services

We can make high-quality color separation of your artwork for light and dark T-shirts.

Our Services Include:
Light T-Shirts
Dark T-Shirts
Four-Color Process (CMYK)
(Color separation of your design into four process colors: Cyan, Magenta, Yellow, and Black)
4 Process Colors
4 Process Colors
White Base for dark T-Shirts
White Base for light colored or pastel T-Shirts
Highlight White
Brightness and Contrast
Color Correction *
White Balance Adjustment *
General Guidelines and Instructions:
How to print color separations from Photoshop?
How to set up color profiles?
How to create a curve, to compensate for Dot Gain?
Payment Methods:
Visa Master Card American Express Discover
Multi Currency Support: U.S. Dollar (USD), Euro (EUR), Canadian Dollar (CAD), Australian Dollar (AUD), and others.
Fast Turnaround:
24 hours
24 hours
Total Price:
$35.00 USD
$35.00 USD

* - Minimum Adjustment

3. Acceptable Artwork Formats

We accept the following PC or MAC file formats:

Preferred file format:


Other file formats:

  • ADOBE Illustrator (*.EPS, *.AI)
  • ADOBE Acrobat (*.PDF - Portable Document Format)
  • JASC Paint Shop Pro (*.PSP) (JASC Software Inc)
  • COREL Draw (*.PSD, *.EPS, *.TIF, *.AI, *.CDR)
  • COREL Paint Shop Pro (*.PSP)
  • COREL Photo Paint (*.PSD, *.EPS, *TIF)
  • COREL Pointer (*.PSD, *.EPS, *TIF)
  • MACROMEDIA FREEHAND (*.EPS, *.FH5, *.FH7, *.FH8, *.FH9, *.FH10)
  • QUARKXPRESS (*.EPS) (Choose File --> Save Page as EPS)
  • KODAK Photo CD (*.PCD)
  • MICROSOFT PowerPoint (*.PPT)
  • MICROSOFT Publisher (*.PUB)
  • TIFF (*.TIF; *.TIFF - Tagged Image File Format)
  • JPEG (*.JPG, *.JPEG - Joint Photographic Experts Group Bitmaps)
  • JPEG2000
  • BMP (*.BMP - Windows Bitmap)

4. How to place an order?

If you would like to place an order, please send your file as an e-mail attachment at Email and click the link below to fill out our Order Form.

For more information, see Overview.

5. Four-Color Process Guidelines:

  1. Screens should have an identical tension 25 - 30 Newton’s.
  2. Use frequency between 45 LPI and 65 LPI (LPI - Lines per Inch).
  3. Use the Elliptical dot shape.

Use the following screen angles:

White base for dark T-shirts (Spot Color)
15 degrees
White Base for light colored or pastel T-Shirts (Spot Color)
15 degrees
Cyan (Process Color)
15 degrees
Magenta (Process Color)
45 degrees
Yellow (Process Color)
75 degrees
Black (Process Color)
75 degrees
Highlight White (Spot Color)
15 degrees
Spot Colors
15 degrees

Four Color Process Printing  Wrong Angles

Add to Favorites

Four-Color Process Screen Printing