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Epson Perfection 4990 Series
10/04 Epson Perfection 4990 Series - 1
Scanner Parts Scanner Specifications
Basic Specifications
Scanner type Flatbed, color
Photoelectric Color CCD line sensor
device
Effective pixels 40,800 × 56,160 pixels at 4800 dpi
Maximum US letter or A4 size
document size (8.5 × 11.7 inches [216 × 297 mm])
Optical resolution 4800 dpi
Maximum 4800 dpi (main scan) × 9600 dpi hardware
resolution* (sub scan)
* The maximum hardware resolution of 4800 × 9600 dpi is achieved
using Epson’s Micro Step Drive
™
technology.
Maximum 12,800 dpi
interpolated
resolution
Output resolution 25 to 12,800 dpi (25 to 6400 dpi in 1 dpi
increments; 12800 dpi performed with
zoom function)
Speed (color) 12.3 msec/line at 4800 dpi
3.1 msec/line at 600 dpi
Pixel depth 16 bits per pixel (input and output)
Brightness 7 levels (in EPSON Scan, gamma
correction controls brightness)
Interface
USB 1.1/2.0 (Type B receptacle connector)
IEEE 1394 (FireWire
)
Light source White cold cathode fluorescent lamp
Dimensions Width: 12.0 inches (30.4 cm)
Depth: 18.7 inches (47.6 cm)
Height: 5.3 inches (13.4 cm)
Weight Approx. 14.8 lb (6.7 kg)
Document
table
Carriage and
lamp (in the
home position)
USB port
Power cord
Transparency unit
(TPU) connector
Transportation lock
(in unlocked position)
] Start button
Indicator
light
P Power button
IEEE 1394 port
Transparency unit
(TPU) under lid
Document
mat
Transportation
lock
Transparency unit
(TPU) progress light