Avision IS1000 (BF-1008S) - Manual (Page 101)

7-1
7. Maintenance
7.1 Cleaning the Glass
The product is designed to be maintenance-free. However, it
still needs to be cleaned occasionally to ensure optimum image
quality and performance.
The procedures
1. Wet a clean and lint-free cloth with isopropyl alcohol. (95%)
2. Open the document cover as shown. Wipe the document
glass.
3. Close the document cover. Your scanner is now ready to
use.