Scanner Parts
document
cover
carriage
(in the home position)
Operate
button
indicator
light
Start button
SCSI ID
rotary switch
SCSI interface
connector
USB interface
connector
Back View
Auto Document Feeder
(optional, included with
EPSON Perfection
1640SU OFFICE)
* Before connecting the scanner to a power source, release the
transportation lock (turn it down to the unlock position).
document
table
Front View
transportation
lock*
option connector
Transparency Unit
(optional, included with EPSON
Perfection 1640SU PHOTO)
Scanner Specifications
Basic Specifications
Scanner type
Flatbed, color
Photoelectric
Color matrix CCD
device
13600 × 18720 pixels at 1600 dpi,
Effective pixels
100% scaling
Maximum
US letter or A4 size
(8.5 × 11.7 inches [216 × 297 mm])
document size
Up to legal size if using the optional auto
document feeder (the reading area can be
specified from software)
Optical resolution 1600 dpi
1600 dpi (main scan) × 3200 dpi
Maximum
hardware
(sub scan)
resolution*
The maximum hardware resolution of 1600 × 3200 dpi is achieved
*
using EPSON's Micro Step Drive
Maximum
12800 dpi
interpolated
resolution
Speed (1200 dpi, Color and grayscale: 8.7 msec/line
draft mode)
Line art: 3.0 msec/line (approximate)
Output resolution 50 to 12800 dpi
(50 to 6400 dpi in 1 dpi increments,
12800 dpi and 9600 dpi, 12800 dpi and
9600 dpi performed with zoom function)
Command level
ESC/I-B8
Zoom
50% to 200% in 1% increments
Pixel depth
14 bits per pixel
Brightness
7 levels
Line art settings
Fixed threshold
TET (Text Enhancement Technology,
enable/disable selectable)
Digital halftoning AAS (Auto Area Segmentation, enable/
disable selectable)
3 halftoning modes (A, B, and C)
4 dither patterns (A, B, C, and D) for
bi-level and quad-level data
2 user-defined dither patterns
Gamma correction 2 types for CRT display (A and B)
3 types for printer (A, B, and C)
1 type for user-defined
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technology.
(approximate)
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