OKI Microline 721 Plus – 9 Pin Dot Matrix Printer

Specifications

Print Method
Impact dot matrix
Printhead
9 pins, 0.30 mm diameter with thermal protection
Print Speed
Mode Characters per Second (CPS)
High Speed Draft (HSD) 507 cps at 10 cpi
Utility 380 cps at 10 cpi
Near Letter Quality (NLQ) 95 cps at 10 cpi
Super Speed Draft (SSD) 570 cps at 12 cpi

Characters per Line (CPL)
Setting/ ML720 Plus/ ML721 Plus
10 cpi/ 80 cpl/ 136 cpl
12 cpi/ 96 cpl/ 163 cpl
15 cpi/ 120 cpl/ 204 cpl
17.1 cpi/ 137 cpl/ 233 cpl
20 cpi/ 160 cpl/ 272 cpl

Emulations
Epson FX, IBM Proprinter, OKI Microline co-resident

Interface
Standard: Centronics parallel, USB Optional: RS-232C serial

Graphics Resolution:
Epson/IBM Single Density: 60 x 216 dpi
Emulations Double Density: 120 x 216 dpi
Quadruple Density: 240 x 216 dpi

MICROLINE Single Density: 60 x 72 dpi / 72 x 72 dpi
Emulations Double Density: 120 x 144 dpi / 144 x 144 dpi
Quadruple Density: 240 x 144 dpi / 288 x 144 dpi

Resident Font
Near Letter Quality – Courier, Gothic
Utility – Gothic
High Speed Draft – Gothic
Super Speed Draft – Gothic
Bar Code: Code 39, UPC A, UPC E, EAN 8, EAN 13, Inter-leaved 2 of 5, Code 128, Postnet

Receive Buffer Size
MAX 128K
Reliability
Mean Time Between 20,000 hours at 25% duty cycle and 35% Failures (MTBR) Page density
Mean Time to Repair (MTTR) 15 minutes
Printhead life 200 million characters average in 10 cpi utility
mode at 25% duty and 35% page density

Ribbon Life 4 million characters (on average, 10 cpi utility)
Paper Specifications
Width
Minimum 3”
Maximum ML 720 Plus: 10”
ML 721 Plus: 16”
Weight 12 to 24 lb.
Thickness
Rear feed 0.014”(0.36 mm)
Bottom feed 0.017”(0.44 mm)