To make sure your scanner is properly calibrated, there are several steps you can take. First, check your scanner’s software for calibration tools and settings. Most scanners come with a user guide that will show you how to use the calibration tools. Check to make sure that the correct settings are selected and that they are set correctly according to the manufacturer’s instructions.
Second, you can use a calibration sheet. This sheet is a printed sheet of paper with patterns or color blocks on it. When scanned, the patterns and colors should appear as they do on the sheet. If they do not, then your scanner needs to be re-calibrated.
Third, you can also adjust the brightness and contrast settings on your scanner, as well as the resolution. Most scanners have settings for resolution of up to 2400 x 2400 dpi. You can adjust these settings to make sure the screen displays correctly.
Fourth, check the scan result against the original document. Compare the colors and clarity of the image to that of the original document. If there is a discrepancy, then your scanner may need to be re-calibrated.
Finally, if these methods do not work, then you can use a test target. A test target consists of several patterns and colors that allow you to accurately test the scanning accuracy of your scanner. You can print out a test target and test it against the results of your scan. If the colors and patterns are off, then your scanner is not properly calibrated.
By taking these steps, you can make sure that your scanner is properly calibrated and producing the highest quality scans possible.