Oki 520, 521 manual Paper Width Minimum

Bar Codes: Code 39, UPC A, UPC E, EAN 8, EAN 13, Interleaved 2 of 5, Code 128 (A, B, C), Postnet

Receive Buffer Size: 64K

Reliability

Parameter	Reliability
Mean Time Between	6000 hours at 25% duty
Failures (MTBF)	cycle and 35% page density
Mean Time to Repair	15 minutes
(MTTR)
Printhead life	200 million characters average
	in 10 cpi utility mode at 25%
	duty and 35% page density
Ribbon Life (on	4 million characters
average, 10 cpi utility)

Paper Width: Minimum: 3”

Maximum: Model 520, 10”

Model 521, 16”

Paper Weight: 12 to 24 lb.

Paper Thickness: Rear feed: 0.014” (0.36 mm) Bottom feed: 0.017” (0.44 mm)

Paper Specifications

Paper Type	Feed	Weight		Width Range*
Cut sheets	Top only	14 to 24 lb.		NM: 7.2 to 8.5”
				WM: 7.2 to 14.3”
Single-part	Rear, Bottom	12 to 24 lb.		NM: 3 to 10”
continuous forms				WM: 3 to 16”
Carbonless,	Rear, Bottom	9 to 11 lb.		NM: 3 to 10”
continuous forms				WM: 3 to 16”
(orig. + 5 copies)
Interleaf,	Rear, Bottom	10 to 12-lb.		NM: 3 to 10”
continuous forms		paper, 9-lb.		WM: 3 to 16”
(orig + 5 copies)		carbon
Labels	Bottom only	N.A.		NM: 3 to 10”
				WM: 3 to 16”
Envelopes,	Top only	24 lb. max		6.5 to 9.5”
single feed
Envelopes,	Bottom only	24 lb. max		6.5 to 9.5”
continuous feed,
non-overlap type
Card stock	Bottom only	120 lb. max.		N.A.
Transparencies	Top only	—	8.5 to 11”

* NM = Model 520; WM = Model 521

E-40 Section 5