Spec Sheet
Copyright 2001, O’Neil Product Development, Inc.
Part Number 110082-000 Rev. 1 Made in U.S.A
.
microFlash
Thermal Printer
8 Mason
Irvine, CA 92618, USA
949-458-0500 (tel) 949-458-0708 (fax)
www.oneilprinters.com 
sales@oneilinc.com (e-mail)
microFlash4t
Portable Thermal Printer
O
’
Neil microFlash Printers
Innovative products from the 
world leader in rugged printers.
Environment:
OOppeerraattiinngg  TTeemmpp
-20° C to 50° C
SSttoorraaggee  TTeemmpp
-30° C to 65° C
CChhaarrggiinngg  TTeemmpp
5° C to 40° C
RReellaattiivvee  HHuummiiddiittyy
10% to 90% noncondensing
EESSDD  PPrrootteeccttiioonn
8 kV Air, 4 kV Contact
Print Technology:
DDiirreecctt  TThheerrmmaall
4.09” (104mm) print width, 203.2 DPI, 
8 dots/mm
PPrriinntt  HHeeaadd  LLiiffee
400,000,000 Dot Lines @ 25%
PPrriinntt  SSppeeeedd
Up to 2.5 inches per second
Fonts & Languages:
MMeemmoorryy  CCaappaacciittyy
Flash/RAM Memory: 4/1 Mbit
AAvvaaiillaabbllee  FFoonnttss
5.5CPI, 7.2CPI, 10.2CPI, 10.7CPI, 15.6CPI,
18.5CPI, 20.4CPI, 22.6CPI, 34.0CPI
IInntt’’ll  CChhaarraacctteerrss
Arab-T, Arab-S, Arab-E, Asian-A, Asian-B, Asian-C, 
Latin & Thai (unicode), Greek, OCRA, OCRB
GGrraapphhiiccss
Supports storage of graphics/logos in
flash memory
Power Source (input):
BBaatttteerryy
7.2V Lithium Ion 1350 mAh (two batteries for 
a total of 2700 mAh)
DDCC  IInnppuutt
12-15V 
Battery Characteristics:
TTyyppee
7.2V Li-ion 1350 mAh (two batteries for a total 
of 2700 mAh)
EEnndduurraannccee
Prints approx. 5,800” on two batteries
BBaatttteerryy  LLiiffee
56% of original capacity after 500 cycles
RReecchhaarrggiinngg
Internal Intelligent 2-3 hour quick charge
from AC Adapter or Cigarette Adapter
Communications:
RRSS--223322  SSeerriiaall
Up to 38.4k baud. Cables available for most
popular laptops and handhelds.
IIrrDDAA
IrDA compliant infrared data 
communications up to 115.2k baud.
Media:
RRoollll  CCaappaacciittyy
Thermal paper: 1,716”/43.5m; 
Linerless: 840”/21.3m
PPaappeerr  WWiiddtthh
4.41”/112.0mm
MMeeddiiaa  TTyyppeess
Direct thermal paper, Labels, Linerless labels
Agency Approvals:
AAggeennccyy
FCC B, CE, C-Tick
Warranty:
WWaarrrraannttyy
1 Year (including printer case)
Optional Accessory:
VVeehhiiccllee  MMoouunnttiinngg  BBrraacckkeett    
SSwwiivveell  BBeelltt  LLoooopp
MMaaggnneettiicc  SSttrriippee  //  SSmmaarrtt  CCaarrdd  RReeaaddeerr
Physical Characteristics:
Size 6.81” x 6.56” x 2.60” 172.97 x 166.52 x 66.04mm
Weight 17.05oz  / 483g
Simple. Rugged. Reliable.
Rugged. The 4t case is made of unbreakable polyethylene plastic. We guarantee it in our warranty -- no one
else offers that.
Flash Memory. As your business needs change, so  can your printer.  We pioneered the use of Flash
memory  many years ago allowing you to change fonts and functions simply  by connecting  the printer to a
computer.  No need to return the printers for an upgrade.
We speak your language – any language. O’Neil has taken away the font and character limitations
you find in other printers. In cooperation with Bit Stream™ Fonts any international character set can be added
to the 4t with a one-time minimal setup fee. 
Plenty of Power.  The 4t uses two rechargeable Lithium Ion batteries, giving the 4t over 2700 mAh of power
-- enough to print over 5,800 inches. Battery charging is built into the printer. No need to buy expensive options. 
Portability.
Even with all of the above features and the largest paper roll in its class, the 4t is the smallest and
lightest 4” rugged, portable printer available
.
EUROPEAN OFFICE
Witan Court
285 Upper Fourth Street
Witan Gate West
Central Milton Keynes
United Kingdom MK9 1EH 
+44 1908 393300 (tel) +44 1908 393400 (fax) 
www.oneilprinters.com
sales@oneiluk.com (e-mail)
microFlash 4t Portable Printer Specifications
OPD-7 4t Sheet 9/21/01 11:42 AM Page 2


