A lower variation scores better because the difference between the two colors isn't very significant. We then scan each color with a calibrated NIX QC Color Control Sensor, which gives us a value we use to calculate the color variation. We use the same paper and print settings for each printer we test to ensure that the results are comparable. If this isn't possible, we use AmazonBasics Multipurpose Copy Printer Paper at 92 GE brightness for portable printers, we use the dedicated paper type for the model. We print the color chart in PDF format, using Adobe Acrobat Reader, on a 4" x 6" sheet of glossy photo paper recommended by the printer manufacturer.
We use the Macbeth ColorChecker Color Rendition Chart, which has 24 individual colors, to test how well a printer can reproduce various types of colors used in different print types. We use our color accuracy test to measure how accurately a printer can reproduce colors.
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