Product Features > Notification of Dirt on the Sensor “Secure” You can prevent accidental operations by registering frequently used settings as presets, and hiding any unnecessary features. Note: “Registering Presets” on page 97 Paper Protection to Reduce Damage to the Originals This scanner comes with a paper protection feature. This feature reduces damage to originals by stopping scanning when it detects a feeding error, such as when scanning stapled documents by mistake. Notification of Dirt on the Sensor This scanner can detect dirt on the scanning sensor, and notifies you that you need to clean the sensor before dirt can cause lines in the scanned images.
You can easily keep the sensor clean, and avoid a decline in image quality. 16