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  UF-990 UF-890 UF-790
UF-490
DX800 UF-780
Scanning Res. 203dpi x 98dpi-406dpi x 391dpi
203dpi x 98dpi-406dpi x 391dpi
203dpi x 98dpi-406dpi x 391dpi
203dpi x 98lpi-203dpi x 391lpi
203dpi x 98dpi-406dpi x 391dpi
203dpi x 98lpi-406dpi x 391lpi
Printing Res. 406 dpi x 391 dpi 600 dpi x 600 dpi 406 dpi x 391 dpi N/A N/A N/A
Transmission Speed Approx. 3-sec. per page Approx. 3-sec. per page Approx. 3-sec. per page Approx. 3-sec. per page Approx. 3-sec. per page Approx. 3-sec. per page
Modem Speed 33,600/ 31,200/ 28,800/ 26,400/ 24,000/ 21,600/ 19,200/ 16,800/ 14,400/ 12,000/ 9,600/ 7,200/ 4,800/ 2,400 bps with automatic fallback 33,600/ 31,200/ 28,800/ 26,400/ 24,000/ 21,600/ 19,200/ 16,800/ 14,400/ 12,000/ 9,600/ 7,200/ 4,800/ 2,400 bps with automatic fallback 33,600/ 31,200/ 28,800/ 26,400/ 24,000/ 21,600/ 19,200/ 16,800/ 14,400/ 12,000/ 9,600/ 7,200/ 4,800/ 2,400 bps with automatic fallback 33,600 - 2,400 bps with automatic fallback 33,600/ 31,200/ 28,800/ 26,400/ 24,000/ 21,600/ 19,200/ 16,800/ 14,400/ 12,000/ 9,600/ 7,200/ 4,800/ 2,400 bps with automatic fallback 33,600/ 31,200/ 28,800/ 26,400/ 24,000/ 21,600/ 19,200/ 16,800/ 14,400/ 12,000/ 9,600/ 7,200/ 4,800/ 2,400 bps with automatic fallback
Recording Method Laser printing on plain paper Laser printing on plain paper Laser printing on plain paper Laser printing on plain paper Laser printing on plain paper Laser printing on plain paper
Recording Speed 10.2 ppm 10.2 ppm 6.5 ppm 5 ppm Approx. 6.5 ppm (letter) 6.5 ppm
Paper Supply Approx. 500 sheets Approx. 500 sheets Approx. 250 sheets  Approx. 150 sheets Approx. 250-500 sheets w/ optional cassette Approx. 250 sheets 
Image Memory Approx. 120 pgs Approx. 120 pgs Approx. 120 pgs Approx. 60 pgs Approx. 240 pgs Approx. 120 pgs
Dimensions 17.3"(W)x17.7"(D) x 12.2"(H) 17.3"(W)x17.7"(D)x12.2"(H) 14.6"(W) x 18"(D) x 9.9"(H) 14.0"(W) x 14.3"(D) x 8.7"(H) 14.6"(W) x 18.0"(D) x 9.8"(H) 14.6"(W) x 18.0"(D) x 9.8"(H)
Weight 35.2 lbs 35.2 lbs 19.8 lbs 16.1 lbs 20 lbs 19.8 lbs
Printing Res. N/A 406 dpi x 391 dpi N/A 406 dpi x 391 dpi 406 dpi x 391 dpi High Speed Scanning
Features Optional Dual-Line Communication 3-Second Super G3 Transmission 3-Second Super G3 Transmission Standard parallel port interface Built-in Fast Ethernet Network Interface
33.6 kbps Super G3 Fax Capability
 
3-Second Super G3 Transmission
1.7 - Second Quick Scanning
2.8 - Second Quick Scanning
Scan to Email
3-Second Super G3 Fax Transmission
2 MB Standard Image Memory
 
0.9 - Second Quick Scanning with Quick Memory Transmission
Quick Memory Transmission
Quick Memory Transmission
600 x 600 dpi Laser Printer
4 MB Standard memory
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70 page Automatic Document Feeder
70 page Automatic Document Feeder
50 page Automatic Document Feeder
TWAIN Image Scanner
50 page Automatic Document Feeder
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132-Station Auto dialer
 
600 dpi Printer/400 dpi TWAIN Scanner
600 dpi Printer and 400 dpi TWAIN Scanner
600 dpi Printer and 400 dpi TWAIN Scanner
PC Fax capability (Panafax Desktop)
600 dpi Printer and 400 dpi Scanner
Remote Diagnostic System