Windows Spot Colour for CW-C6x00 Series

What is Spot Colour?

Spot colours or PMS (Pantone Matching System) refer to a colour or ink that has been specifically mixed and calibrated to a colour matching system such as Pantone. It is a similar process to picking out paint swatches – a colour is picked from a catalogue of PMS.

  • Also known as a Pantone colour.
  • Single shade/tone of solid colour.
  • Printed using pre-mixed ink.
  • Consistent from job to job.
  • Usually have a unique ID code.

What is a Process Colour?

  • Also known as CMYK printing.
  • Colour simulated by a dot (dither) pattern known as halftoning.
  • Not actually “solid” colours.
  • Millions of colours possible from three inks.
  • Impossible to print certain colours.

Spot Colour vs Process Colour

  • Spot Colours are solid regardless of magnification.
  • Process Colours will exhibit visible dots or “noise” at higher magnifications.
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Spot Colour Matching

  • The process of matching a process (CMYK) printed colour to an existing colour.
  • Existing colour could be a solid Pantone colour, or even another process colour.
  • Usually carried out using a RIP (Raster Image Processor), or by trial & error!.

Why Epson Spot Color Function

  • RIP is
    • Very comprehensive features tool
    • Support for multiple file types
    • Complicated to use
    • Expensive to buy
  • Epson Spot Color Tool (Color Tone Matching Assistance Tool)
    • Easy to use, even for novices
    • Free to all
    • Support ColorWorks
    • No need to amend the artwork
    • Up to 32 spot colours per layout
    • Supported by standard driver

What is it used for?

Spot colour will allow the user to guarantee a particular colour to be printed in a desired shade. This is critical for operations like branding, or any time you need to print a specific colour in a print set.

For example, Epson or Coca-Cola™ Logo always have specific colour as below. Companies always wanted to maintain this specific colour Shade to represent the Company.
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How to

  • Obtain the RGB value of the colour to be converted
  • Obtain the RGB value for the target Colour
  • Create the Spot Colour list on the printer
  • Print the results using the Spot Colour List using Printer Driver

Obtain the RGB value of the colour to be converted

Obtain the RGB value for the colour that needs to be converted / printed into a new colour

Open the image using Microsoft Paint
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  1. Click on the Color Picker
  2. Click on the colour that you want to change
  3. Picked colour is displayed as (3)
  4. Click on the Edit Colors
  5. Please note down the RGB value (R:239, G:228, B:176)

Obtain the RGB value for the target Colour

Obtain the RGB value for the target Colour

  • Start the Color Tone Matching Assistant Tool
    This lets you enter the RGB settings of the original colour, creates some sample colours by slightly changing the original RGB settings, and then lets you print the samples. You can choose a target colour and print the neighbouring RGB values and colours on the printout.
  • Select the Target Printer
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  • Select correct Media details i.e. Matte Paper, Normal Printer Quality, width, and length
  • Try and set the RGB value to match the target colour
  • Click Print and the results as below:
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  • Note down the RGB value for Target colour

Create the Spot Colour list in the printer driver

  • Start the CW-C6x00 Series PrinterSetting Utility
    1. Control Panel -> Printer Devices -> Select the Printer -> Printer Preferences -> Printer Utilities Tab -> Click on Printer Setting UtilityAlternate Text
      The spot colour file is stored in the windows PC locally, not in the printer as indicated by the utility.
    2. Click Store Data in the Printer
    3. Click on Create from Spot Color Setting
  • Enter the Original Colour and Target Colour
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  • Click Add

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    1. Click Add
    2. See the details are correct
    3. Click on Confirmation
  • Let's Name the Setting

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    1. Please provide File Name
    2. Click OK to save
  • Saved details are shown as below:
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Print the results using the Spot Colour List using Printer Driver

Finally, Print the results

  • Select the Spot Color Setting file created
    1. Printer Preferences
    2. Media Definition
    3. Click on the Spot Colour Setting
    4. Select the Spot Color Setting file that you have created. i.e. SpotColorSample.UCL and location is in:
      • C:\Users\Public\Documents\EPSON\SpotColorData\CW-C6000 Series\

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For information How to use Windows Colour Correction Mode and Image Colour Management (ICM) for CW-C6x00, please refer to the following article: