January 2010

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The Hi-Tech Solution
The hi-tech solution involves colour calibration of both screen and printer and a feedback mechanism for the screen to allow the computer to compensate for any adjustments made to the screen or colour drift through time. In order to achieve this two colour measurement devices are required - a "CRT colour analyser" for the screen and a "spectrophotometer" for the printer.

The first stage is to draw a known colour on the screen and measure the actual screen colour using the CRT colour analyser. The screen colour balance can then be adjusted until the screen output lies within a specified range. Next the computer is made to draw a range of colours on the screen and the actual colour output is measured and fed back into the computer. Using feedback in this way allows the computer to establish a performance profile for the screen that can then be used to predict how a colour will appear on screen. This information can then be used to control the information sent to the screen and hence the screen colours. Periodic re-calibration will be necessary to compensate for colour drift or any tampering with the screen controls.

The printer output is calibrated using a spectrophotometer that can measure colours on a printed page. A range of known colours is printed and then measured, the results being fed back into the computer. This information is then used to predict how a colour actually appears on the paper when it is sent from the computer. Again, a performance profile is created which can then be used to modify the colour information sent to the printer to ensure a particular printed colour.

ScotColor
ScotColor is a ScotWeave product which uses the above calibration techniques to ensure accurate colour reproduction on screen and printer. Furthermore, since many yarn shades are created using dye prediction systems attached to a spectrophotometer, the measured colour data for the yarn shade can be fed straight into ScotColor and the correct screen and printer colour obtained instantly.

For more information about ScotColor see the ScotColor page on this web site.

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