Check the following points

• Are the glass and rollers inside the ADF clean?

• Is there any foreign matter (such as dust or paper dust) on the document?

• Is [Vertical Streaks Reduction] enabled in the scanner driver for a scan?

If the problem persists, check the items in Before You Contact the Scanner Service Provider first, then contact the distributor/dealer where you purchased this product. Refer to the contact information in the Contact List if supplied with this product, or refer to the contact information in the Contact for Inquiries section if provided in Safety Precautions supplied with this product, and then make an inquiry.

Are the glass and rollers inside the ADF clean?

Solution

Clean the dirty parts.

For details, refer to Cleaning the Inside of the Scanner (ADF) with a Cloth.

Is there any foreign matter (such as dust or paper dust) on the document?

Solution

Remove any foreign matter off the document.

Foreign matter may get on the glass that is inside the ADF, and cause the image to appear dirty.

Is [Vertical Streaks Reduction] enabled in the scanner driver for a scan?

Solution

Enable [Vertical Streaks Reduction] in the scanner driver, and then perform a scan.