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