Epson Expression 1680

131
Appendix A
Specifications
Scanner
General
Scanner type
Flatbed, color
Photoelectric device
Color MatrixCCD
™
line sensor
Effective pixels
13600
×
18720 pixels (1600 dpi)
Optical density
3.6 Dmax
Color depth
48-bit internal/48-bit external
Grayscale depth
16-bit internal/16-bit external
Maximum document size
8.5 × 11.7 inches (216 × 297 mm)
A4 or Letter (the reading area can be
specified from your software)
Resolution
1600 optical
Maximum hardware resolution*
1600 dpi (main scan)
3200 dpi with Micro Step Drive
(sub scan)
* The maximum hardware resolution of
1600 × 3200 dpi is achieved using
EPSON’s Micro Step Drive technology
Maximum interpolated resolution
12800
×
12800 dpi
Speed (1600 dpi, draft mode)
Color: 9.2 msec/line (approx.)
Grayscale: 3.1 msec/line (approx.)
Line Art: 3.1 msec/line (approx.)
Color separation
RGB color filters on CCD
Reading sequence
Monochrome: One-pass scanning
Color byte sequence: One-pass scanning
(R, G, B)
Color line sequence: One-pass scanning
(R, G, B)
Zoom
50 to 200% in 1% increments
Command level
ESC/I-B8
FS
Pixel depth
16 bits per pixel (16 bits per pixel
input, 1 to 16 bits per pixel output)
Brightness
7 levels
Line art settings
Fixed threshold
TET (Text Enhancement)
Technology, enable/disable selectable)
Digital halftoning
AAS (Auto Area Segmentation,
enable/disable selectable)
1680.book Page 131 Thursday, March 1, 2001 4:28 PM