Item
Description
Scanning time
• Black and white: 5 seconds or less
• Color: 10 seconds or less (A4/600 dpi/
Compressed)
Not including transfer time.
ADF throughput
• Black and white: 20 image per minute (300
× 600 dpi)
• Full Color: 12 image per minute (300 × 600
dpi)
Interface
Ethernet (10BASE-T, 100BASE-TX), USB 2.0,
USB2.0 Host, Wi-Fi
Sendable file formats
TIFF, JPEG, PDF
Address book
Maximum 100 items
Number of redials: 1
Fax Function Specifications
Fax transmission and reception
Item
Description
Access line
• Public switched telephone networks (PSTN)
• Private branch exchange (PBX)
Transmission mode
ITU-T Group 3 (G3)
Scan line density
• 8 dots per mm × 3.85 line per mm (200 ×
100 dpi)
• 8 dots per mm × 7.7 line per mm (200 ×
200 dpi)
Transmission time
3 seconds (8 dots per mm × 3.85 line per mm,
33.6 kbps, MMR, ITU-T # 1 chart)
Transfer rate
33.6 kbps to 2400 bps (auto shift down system)
Data compression methods
MH, MR, MMR, JBIG
Specifications of the Machine
419
Summary of Contents for M C251FW
Page 2: ......
Page 23: ...3 2 1 ECC105 Interior ECC106 4 3 2 1 Guide to Components 21 ...
Page 45: ...Deleting characters 1 Press to delete characters Entering Characters 43 ...
Page 48: ...1 Guide to the Machine 46 ...
Page 82: ...2 Paper Specifications and Adding Paper 80 ...
Page 100: ...3 Printing Documents 98 ...
Page 124: ...4 Copying Originals 122 ...
Page 170: ...5 Scanning Originals 168 ...
Page 216: ...6 Sending and Receiving a Fax 214 ...
Page 270: ...7 Configuring the Machine Using the Control Panel 268 ...
Page 346: ...6 Close the ADF cover 9 Maintaining the Machine 344 ...
Page 360: ...Main unit DUE292 1 3 2 1 DUE288 2 DUE289 10 Troubleshooting 358 ...
Page 361: ...3 DUE290 Waste toner bottle ECC168 Paper feed unit DUE320 1 Removing Paper Jams 359 ...
Page 440: ...12 Appendix 438 ...
Page 445: ...MEMO 443 ...
Page 446: ...MEMO 444 EN GB EN US EN AU M0EQ 8504A ...
Page 447: ......
Page 448: ...EN GB EN US EN AU M0EQ 8504A 2021 2022 Ricoh Co Ltd ...