Epson Expression 800 Reference Manual page 71

Reading sequence
Pixel depth
Brightness
Line art settings
Digital halftoning
Gamma correction
Color correction
Interface
Light source
Reliability
Specifications
Monochrome mode: One-pass scanning
Color page sequence mode: Three-pass scanning (R, G, B); not
supported by EPSON TWAIN Pro
Color byte sequence mode: One-pass scanning (R, G, B)
Color line sequence mode: One-pass scanning (R, G, B)
12 bits per pixel per color input (optical density of 3.3); 1 to 12 bits per
pixel per color output
7 levels (In EPSON TWAIN Pro, Gamma correction controls brightness.)
Fixed threshold
TET (Text Enhancement Technology, enable/disable selectable)
AAS (Auto Area Segmentation, enable/disable selectable)
3 halftoning modes (A, B, and C) and 4 dither patterns (A, B, C, and D) for
bi-level and quad-level data
2 types for CRT display
3 types for printer
1 type for user-defined
1 type for CRT display
3 types for printer
1 type for user-defined
2 SCSI-II (50-pin half pitch connectors)
White cold cathode fluorescent lamp (Xenon)
100,000 cycles of carriage movements (main unit)
Page 71