| Scanner type | Flatbed, color |
| Photoelectric device | CIS |
| Maximum document size | ET-8500: A4/Letter
ET-8550: Legal |
| Scanning resolution | 1200 dpi (main scan)
4800 dpi (sub scan) |
| Image data | Color:
48 bits per pixel (16 bits per pixel per color) internal 24 bits per pixel (8 bits per pixel per color) external Grayscale: 16 bits per pixel internal 8 bits per pixel external Black and white: 16 bits per pixel internal 1 bit per pixel external |
| Light source | LED |