APS EPM205-MRS, Техническое описание

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EPM205-MRS - Technical reference - Preliminary Page 20
Advanced Printing Systems
5.2 Setup and Hardware control commands
GS / n
Description: Set printing speed / Maximum peak current / Dynamic division
Format: <1Dh>
<2Fh> <n>
Comments: n = 1 to 32: (Default n = 5) Software programmable consumption (Dynamic division).
The maximum number of black dots which are simultaneously heated is (n+1) x 8.
In default mode, n = 5.
Example :
n = 5 Maximum black dots heated: (5+1)*8=48.
Printer Peak consumption @5V: (0.3A (Stepper Motor) + 5*48/160) = 1.8A
160
Ω is the dot resistance.
GS s n1 n2
Description: Set maximum print speed
Format:
<1Dh> <73h> <n1> <n2>
Comments: This control code may be used to reduce the print speed (to have more paper feed tension).
It can also help to reduce noise and improve print quality.
Bytes n1, n2, set the time T (in µs) between each step:
T = (256*n1) + n2. 1500 < T < 8500.
Default: T = 2500 : n1 = 9, n2 = 196.
Example: T = 2500 µs
Maximum print out speed:
(1/( 8 * 2500e-6)) = 50 mm/s
8 dots/mm is the dot density.
GS a n
Description: Set acceleration smoothing
Format:
<1Dh> <61h> <n>
Comments: n = 0 to 255: (Default n = 210) Software programmable acceleration smoothing. The print
cycle time is limited to the cycle time of the previous cycle multiplied by the acceleration
coefficient (coefficient = n/256). This improves print quality and reduces noise.
Example: n = 210: Cycle time can’t be smaller than 82% of previous cycle time.
GS D n
Description: Set print Intensity
Format:
<1Dh> <44h> <n>
Comments: n=80h (128d) : (Default). Nominal print intensity
n>80h (128d) : Printout becomes darker
n<80h (128d) : Printout becomes lighter
(n from 0 to 255 (FFh)).