With the OKIFAX®5780 and 5980 high-volume 
business facsimiles, you can get more done in far less 
time. Powerful yet compact, these OKI®fax machines 
flawlessly combine performance and reliability.
Helping you do more in less time
OKIFAX 5780/5980 models have fast transmission 
speeds and 50-page automatic document feeders, 
so users can load documents, set instructions, and 
get back to work quickly.
The OKIFAX 5980 and 5980 Dual Line models come 
standard with 12.5 MB of RAM (up to 1,000 pages
2
);
the 5780 comes with 2.5 MB (up to 200 pages
2
), 
which can be upgraded to 10.5 MB. All three models 
have a 72-hour battery backup—so no faxes will be 
lost if the power goes out, even over a long weekend.
The 33.6 Kbps modem (the Dual Line model has two) 
can transmit a page in as little as 2.5 seconds2, 
saving time and telephone costs. The 5980 models 
also have JBIG compression, so file sizes are further 
reduced for even faster transmission.
OKIFAX 5780/5980 units can scan documents at true 
600 dpi, and deliver output at a fast 10 pages per
Highlights:
4-Line LCD display: larger display; easier to read 
and navigate
Navigation button: easier,faster menu 
selections; particularly useful in multi-user 
environments
Priority transmit: override allows transmission 
of important documents ahead of jobs waiting 
in queue
QWERTY
®
keypad: quicker input of names,
numbers, and e-mail addresses 
E-mail Internet Access Key: easy one-touch
access for transmitting over the Internet 
(optional upgrade available on select units)
Back-up File Feature: automatically send a copy 
of all fax transactions to a 2nd fax device or 
e-mail address
99 Department Codes: monitor activity/ 
usage by department, work-group or individual
Help button: one-touch access to function and 
programming paths
Dual access: enables scanning to memory while 
machine transmits or receives
Productivity upgrades: adapt to the changes 
in your business
Industry-leading support: 90-days On-Site
1
; 
1-year warranty on parts; 5-year warranty 
on the LED printhead
Live, toll-free technical support 7x24x365
1
1
Available in the U.S. and Canada only.
2
Based on ITU-T Test Chart #1.
3
Requires installation of T.37 Internet/ 
LAN Fax option kit.
For the way 
you work today
and beyond
minute. Horizontal/Vertical Reduction extends past the 
printable area of the page to ensure that no data is 
lost on a received fax or copied sheet.
With the Backup File feature, you can automatically 
send an electronic copy of every fax you transmit or 
receive to a pre-determined fax number or e-mail 
address.
3
Send faxes to e-mail, communicate via your 
network, even use the Internet!
There’s an OKI fax configuration to fit your every 
business need—from stand-alone workhorses to 
digital document portals.
With a wide range of available options, OKIFAX 
5780/5980 models let you fax to e-mail via your LAN 
or the Internet... turn your fax machine into a true 
multi-functional digital document processor... and 
monitor and track usage through a 99-department 
code feature.
OKIFAX 5780/5980 Network/Internet/Dual Line:
Facsimile for the way your business works today 
and beyond.
High-speed, high-volume versatile workgroup fax 
solutions for demanding environments.
OKIFAX®5780/5980
Digital LED Network/Internet/Dual Line Facsimile
Printed in the USA.  MS 11275/0804
OKIFAX®5780/5980
Digital LED Network/Internet/Dual Line Facsimile
Ordering Information (Part Numbers) 
Facsimile: 
OKIFAX 5780, 120V (English) 62211201 
OKIFAX 5780, 120V (English/French) 62211202 
OKIFAX 5980, 120V (English) 62211301 
OKIFAX 5980, 120V (English/French) 62211302 
OKIFAX 5980 Dual Line, 120V (English/French) 62211305
Supplies: 
OKIFAX 5780/5980 5K Toner
6
52112901
OKIFAX 5780/5980 Image Drum 40433318
Options:
500 Sheet Letter/Legal 2nd Paper Tray 70029401 
Telephone Handset 70031801 
T.37 Internet/LAN Fax Option Kit  70040101 
T.38 “Real-Time” Internet Fax Option Kit 70037001 
G3 Dual Line Option Kit 41345301 
OkiLAN
®
7100e+ 10/100Base-T Ethernet 
Internal Print Server Card 70034301
Unimessage Pro Software 
(Std. OKIFAX 5980; Opt. OKIFAX 5780) 70039201
Unimessage Pro LAN 5-User Upgrade Software 70039301 
Unimessage Pro LAN 10-User Upgrade Software 70039801 
Unimessage Pro LAN 25-User Upgrade Software 70039901
Specifications
OKIFAX®5780 OKIFAX®5980 OKIFAX®5980
Dual Line 
Technology
Modem Speed 33.6 Kbps 
Transmission Speed 3 seconds per page
1
2.5 seconds per  2.5 seconds per  
page with JBIG
1
page with JBIG
1
Quick Scan Speed 1.5 seconds per page 
Print Speed Up to 10 ppm
2
Print/Scan Resolution 600 x 600 dpi 
Memory 2.5 MB (max. 10.5 MB: 12.5 MB (standard 12.5 MB (standard 
optional 2 MB, 4 MB and max. ) with and max. ) with 
with battery backup;  battery backup battery backup
8 MB HRS600)
Gray Scale 64 levels; error diffusion
Key Features
Programmable Speed Dialing 40 one-touch; 100  80 one-touch; 150  80 one-touch; 150 
2- or 3-digit codes  2- or 3-digit codes 2- or 3-digit codes
Broadcast Keys
Able to mix e-mail addresses 
20
and fax numbers (will send e-mails 1st, then faxes)
Broadcast Locations 160 250 250 
Department Codes Up to 99 
Back-up Feature
Send a copy of transmitted/
received files to a pre-determined fax number or 
Yes
e-mail address
2
Horizontal/Vertical Reduction Ensures 
no loss of data received or copied even when 
Yes
larger than the standard printable area
Fax to E-mail Send hard-copy documents to 
Optional Optional N/A
e-mail address in TIFF or PDF format
2
Multifunctionality Print, fax, copy and scan Optional
3
Standard Standard
Dual Line Optional Optional Standard
(2nd 33.6 Kbps line)
Paper Handling
Standard Paper Supply 250-sheet letter/legal paper cassette 
Optional Paper Supply 500-sheet letter/legal tray 
Print Paper Type 20 lb. bond recommended 
Automatic Document Feeder Up to 50 sheets 
Original Document Size (WxL) Max.: 8.5" x 14.0"; service selectable:
8.5" x 59.0"; min. width: 5.5"
Document Scan Width 8.47" transmit; 8.32" copier
Other Standard Features Instant dial; Dual access; Automatic legal-to-letter reduction; Delayed trans-
mission; Memory transmission; Mixed broadcasting; Confidential/Security 
transmission/reception; Copy mode; Alphabetic-search telephone directory; 
Auto redial; Out-of-paper and toner reception; Polling; ECM; Distinctive ring 
detection; PC Interface card; Restrict access coding; Fax forwarding; 30 Timers 
for delayed transmission; 16 Confidential mailboxes
Management Reports Activity report; Active memory file; Broadcast MCF; Phone directory; Group 
directory; Configuration list; Function list; Box list
Environmental and Warranty
Dimensions (HxWxD)  13.75" x 14.25" x 24.0"4(34.9 cm x 36.2 cm x 60.9 cm); 
Weight 27.0 lb. (12.24 kg)  
Warranty 90-days On-Site service5; 1 year parts; 5 years LED printhead
Supplies 5,000 pg. toner cartridge
6
OKIFAX 5980/5980 Dual Line (shown with 
optional 500-sheet 2nd Tray mechanism)
OKIFAX 5780
For more information on OKI Digital LED Facsimile 
and supplies, including OKIcare
®
Extended Service Programs:
1-800-OKI-DATA (800-654-3282).
5
1 
Based on ITU-T Test Chart #1.
2 
Published performance results based on laboratory testing. 
Individual results may vary.
3 
Requires installation of Unimessage Pro software.
4 
With rear stacker tray fully extended.
5
Available in the U.S. and Canada only.
6
This high-capacity (5,000-page) toner is designed specifically to work 
with OKIFAX 5780/5980 models only.It is not compatible with any other 
OKI printer or fax machine.
Specifications are subject to change without notice. 
© 2004 Oki Data Americas, Inc., OKI Reg.T.M., M.D., M.R.,OKIFAX, OKIcare,
Reg. T.M., Oki Electric Industry Co., Ltd.Command Performance, 7-Day/ 
24-Hour logo T.M., Oki Data Americas, Inc. Unimessage T.M.,Wordcraft 
International Ltd. Energy Star Reg. T.M., U.S.EPA.