: The printer uses the UFR II LT (Ultra Fast Rendering) driver. Unlike older printers that required massive onboard memory, this driver offloads the heavy processing to your computer, making it fast and efficient.
| Issue | Root Cause | Severity | | :--- | :--- | :--- | | "Driver not found" on Windows 11 | Canon did not submit driver for WHQL certification for Windows 11. | High | | USB connection drop after sleep | Power management in old driver fails with modern USB controllers. | Medium | | Blank pages printed | Incorrect page size mapping (driver defaults to A4 vs Letter). | Low | | macOS installation blocked | Driver is 32-bit; macOS dropped 32-bit support. | Critical | lbp 6030 printer driver