HP LaserJet 4345 Multifunction Printer series - Calibrating the scanner

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Calibrating the scanner

Calibrate the scanner to compensate for offsets in the scanner imaging system (carriage
head) for ADF and flatbed scans. Because of mechanical tolerances, the scanner's carriage
head might not read the position of the image accurately. During the calibration procedure,
scanner offset values are calculated and stored. The offset values are then used when
producing scans so that the correct portion of the document is captured.

Scanner calibration should be carried out only if you notice offset problems with the scanned
images. The scanner is calibrated before it leaves the factory. It needs to be calibrated again
only rarely.

Before calibrating the scanner, print the calibration target.