Inline Paper Measurement: Before Reel Up

This provides continuous non-contact color measurement on the machine. The color, opacity and the content of FWA on white or colored paper and board can be measured. The finished paper is measured right before the reel up, ensuring that Inline measurements have a very good correlation to the results from the laboratory. The instrument is made for rough environments. Ambient light, velocity and flutter of the web have no influence on the measuring result.

An automatic Closed Loop Color Control (CLCC) system keeps the color constant. Even shade changes can be done automatically.

This helps the operators to:

  • Have 100 % control during the production
  • Shorten transition times
  • Avoid waste
  • Save dyes or FWA


Advantages of Xrite Inline systems:

  • X-Rite offers complete turn-key solutions
  • Installation of a Closed Loop Color Control system is completed in 3 days
  • Machine shutdown during installation is typically only 1 hour
  • Very low cost of ownership
  • Fast ROI (typically 3 to 9 months)


The color sensor is mounted just before reel up. ERX50 is used for colored and white paper. OBA can be seperated.

During machine stop and paper break the customized frame (EFX) will lift the instrument off the web. As soon as there is paper on the machine, the instrument will automatically go back into measaurement position and start the measurement again.

Quality Control

The quality control software (ES15Win and ES18Win) control the instrument. The measurements will be displayed as a trend diagram.
Colored bars will show the deviation of the produced paper to the standard. At one glance the operators will see, if the paper is too light or too dark, too red or too green, too yellow or too blue.

Closed Loop Color Control

The Closed Loop Color Control software (ES19Win) controls up to three dyes plus OBA. This helps to produce constant quality although  the color of the raw material is changing. Even color changes can be made in automatic mode. This decreases the work load of the operators during the grade change period to have more time to set up all the other parameters during this period.