EBS Ink-Jet Systems 1500 Series, Руководство пользователя, Страница: 80 / 111

EBS-1500
Series Printers User's Manual
Paragraph 4 - Operating the Printer
EBS
Ink Jet Systems
78
20060920#3.1
NOTE:
•
The maximum pulse frequency at the shaft-encoder input shall not exceed
250kHz
.
•
If the printer is equipped with electromagnetic heads, there is a print parameter
Intensity , which affects the maximum pulse frequency. Any increase in the intensity
results in a decrease in frequency to the following formula:
22000
Intensity
f = [kHz]
where:
f - frequency [kHz] of pulses at the shaft-encoder input,
Intensity - setting of the Intensity parameter.
4.6.3. Defining the Maximum Print Rate for Various Fonts
In order to define the maximum print rate for a font selected (also called a character
matrix) follow the procedure below:
1. Open a text file in the TEXT SERVICE menu and use the font for which the maximum
print rate is to be measured.
2. Use the PRINTING PARAMETERS command in the PRINTING menu to set print
parameters, in particular Intensity , Resol.dot/dcm as required and also
•
the Generator parameter to GEN ,
•
the Cnv spd m/min parameter to a relatively small value (e.g. close to the lowest
possible setting),
3. Start printing the text file with the START PRINT command in the PRINTING menu.
4. Check on the terminal display status window (after "/") whether the vertical height of the
row corresponds to the height of the font selected.
5. Get back to the PRINTING PARAMETERS command to view the Cnv spd m/min
parameter.
6. Hold down the ¡ key and check the maximum possible setting of the Cnv spd m/min
parameter. This is the maximum print rate value for the given font, print
parameters Intensity , Resol.dot/dcm and others .
NOTE:
•
The above procedure can only be applied when timing pulses are generated by an
internal generator (not the shaft-encoder). When the shaft-encoder is used, the print rate
cannot be controlled automatically as the control program has no impact on frequency of
pulses from the shaft-encoder.
•
In order to determine an image resolution (a number of characters per decimetre or
characters per inch) use the following formula:
R
R
CHARACTER WIDTH + DISTANCE
dots/dm
ch/dm
=
0,254 * R
R
CHARACTER WIDTH + DISTANCE
dots/dm
ch/in
=
where:
R
ch/dm
- an image resolution (a number of characters per decimetre),
R
ch/in
- an image resolution (a number of characters per inch),
R
dots/dm
- an image resolution (a number of dots per decimetre); it is the same as the
setting of the Resol.dot/dcm parameter,
CHARACTER WIDTH - a width (a number of dots) of a character for the given font,
DISTANCE - a distance (a number of dots) between characters; it is defined by the
subfile parameter Distance .
For example, if you select Latin 16x10 , the character width is 10. If Distance=2 and
Resol.dot/dcm=60 , the character resolution is 5 ch/dm or 1,27 ch/inch .
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