Oki 24DX manual LED Correction Data

The LED driver corrects the LED illumination by controlling the LED current. The LED illumination can be set in 16 steps, with 7 steps in the direction of illumination increase in relation to the standard value, and 8 steps in the direction of decrease. For this reason, the LED correction data is a 4-bit data for each dot.

The relationship between the LED correction data and LED current correction steps with the LED driver used in an LED head is shown below.

LED Correction Data

	Corretion Data			Correction	Correction
				Step	Mode
msb b3	b2	b1	lsb b0
1	0	0	0	+16%	−
					−
0	1	1	1	+14%
0	1	1	0	+12%	Correction by
0	1	0	1	+10%	increasing
0	1	0	0	+8%	illumination
					−
0	0	1	1	+6%
					−
0	0	1	0	+4%
					−
0	0	0	1	+2%
0	0	0	0	0%	No correction
1	1	1	1	-2%	↓
					↓
1	1	1	0	-4%
1	1	0	1	-6%	Correction by
1	1	0	0	-8%	decreasing
1	0	1	1	-10%	illumination
					↓
1	0	1	0	-12%
					↓
1	0	0	1	-14%

40930701TH DRAFT Vesion 45 /