Fujitsu has not released a modern driver package specifically for Windows 11. However, the existing fi-Series TWAIN or PaperStream IP drivers for older Windows versions can often be forced to work.
Locate your Fujitsu scanner (it may have a yellow exclamation mark next to it). fujitsu fi6110 driver windows 11
It runs independently of PFU's proprietary software. Fujitsu has not released a modern driver package
Always start at the official source to avoid malware or incompatible software. fujitsu fi6110 driver windows 11