Hitachi IJ RX2 Technical Manual page 43

(4) Relationship between print object detection signal and printing operation
Print object
detection signal
Printing operation
*: The printing preparation time minimum
value varies with the print dot matrix, ink
drop use, etc., however, the right table can
be used as a reference.
The accurate printing preparation time can be calculated by following formula.
Necessary printing preparation time (Note 1) = [(One scan time)
(One scan time) =
N : (One scan time
Excitation frequency: 68.9 (Model RX2, with 65µm nozzle and JP-K69 ink)
(Note 1) Time for repeated printing of fixed characters. When using the communications function or
2-dimensional bar code function, it will be longer than the time calculated from this formula.
When the speed is followed up, the number of encoder pulses shown below will serve as reference for the
minimal value of print space:
Minimal time of 1 pulse =
Number of necessary
encoder pulses =
(5) Tracking function
● This function achieves printing even when two or more print objects are positioned between the print
object detector and print head.
● Up to four print objects can be positioned between the print object detector and print head.
● This function cannot be exercised simultaneously with the repeat-printing function.
3 ms min.
OFF ON
Printing
(Number of vertical dots + Character width)
Excitation frequency (kHz)
>
N) Remaining number that is set to "a"
×
=
(a: Refer to the right table.)
(Number of vertical dots + Character width)
a
Minimal time of 1 pulse
3 ms min.
Printing
*Printing preparation
time
(Print start delay
(Printing interval) adjustment = 0)
Reference of printing preparation
Nozzle size
65µm
(N + 1) ] (ms)
×
Ink drop use percentage
×
Nozzle size
65µm
Excitation frequency (kHz)
Frequency division setting value (pulse)
●Input/output (I/O) specifications 4-12
time minimum value
9 ms
(ms)
a
5.5
Ink drop use percentage
×
(ms)