Kodak i1800 Series Key Operator's Manual page 12

Hide thumbs Also See for i1800 Series:

Review the proper materials used in cleaning

- Vacuum: a good quality vacuum with non-conductive brush and crevice tool is

recommended.

896 5519

CALIBRATION

This topic will review the Image and UDDS calibration needs of the i1800 Series Scanner.

Image Calibration

The scanner was designed to operate for hundreds of hours before image re-calibration

is required. Image calibration is only required to compensate for the change of light

intensity from the lamps over time. You should only perform image calibration if the

scanner posts a message indicating that image calibration is required. Image calibration

must be performed on a clean scanner. The imaging guides and lower cover glass must

be completely free of dust or contamination before Image calibration is performed. If

Image calibration is performed without a thorough cleaning of the image path, streaks or

lines will appear in the image after just a few scans. These image quality problems are

caused because calibration has compensated for an obstruction in the image path that

will move locations as pages are fed through the scanner. Performing an Image

calibration on a dirty scanner is calibrating the dust into the image processing of the

scanner.

- Only calibrate the scanner when the scanner indicates that it needs to be calibrated

with a 'Calibrate Now' message.

- Never calibrate a dirty scanner.

- If an image 'Calibrate Now' message is displayed, Image calibration should only be

performed using the 12 x 12-inch all-white calibration target.

UDDS Calibration

UDDS calibration is designed to adjust the Ultrasonic Double Document Detection

sensors of the scanner. During normal scanner operation, this calibration should not be

required. Only perform the UDDS calibration if a message is posted that indicates that a

UDDS Calibration is required.

- If a UDDS calibration message is displayed, UDDS calibration should only be

performed using a US letter or A4 size sheet of 20 lb. or 75 g/m

the center portrait feeder orientation.

A-61579 February 2007

853 5981

169 0783

bond paper fed in