Microcom 322M - Manual (Page 34)

Designing Labels Using LDS Chapter 5
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322M Operator’s Manual
and lower sensors. This method may be used, it is however not the preferred method for
detecting media containing a black line. See Black Line Media (Reflective) below.
5.4.7.3
Continuous Media
If the LCB parameter is set to a value of “2”, the printer will not search for a registration
mark. The gap detectors are only used for stock out conditions when set for continuous
media types. The printer will print all fields that contain data and then advance the media by
the amount specified in the SPG parameter of the header when the default AGD
of “1” is
entered in the header. This means that fields that are left blank or text data for the
associating format fields are left empty will not print.
For example: Imagine a receipt format that contains 100 lines. If data is provided for the
first 50 lines, the printer will not advance for the remaining 50 lines that have been left blank.
The printer would stop immediately after printing the 50th line and then advance the media
by the amount specified in the SPG header parameter.
When the AGD
header parameter is set to “0”, the printer will advance the same amount of
media even when text data fields are left blank. In this case, the advance distance is
determined by adding the SPG parameter and LSY parameter values.
For example: Imagine the same format as mentioned above that has a LSY value of 609
(3” x 203 = 609), an SPG value of 285, and an AGD value of “0” that contains 100 format
lines. If text data is provided for the first 50 lines and the remaining 50 lines are left empty,
then the printer will print the first 50 lines, advance the next 50 lines, advance the remaining
LSY value, and then finally advance the SPG or 285 dots. Regardless of the format fields, if
the LSY is set to 609 and the SPG is set to 285 the printer will advance a total of 881 dots
(609+285=881).
5.4.7.4
Black Line Media (Reflective)
The Reflective Black Line method is used when media using a black line for a registration
mark and reflective detection is desired; a “3” should be entered in the LCB parameter. This
setting will detect the leading edge of the black line by using the lower reflective sensor.
This method is the preferred method for detecting media containing a black line and should
be used when possible.
5.4.8 AGD (Activate Gap Detector)
This parameter sets the number of steps (dots) that the printer will advance with detection of
registration marks or gaps disabled
. This value has a default of “1” and is generally used. It
should not be defaulted when the LCB is set to continuous media and the form or label size
is desired to stop after the last printed data (see section 5.3.7.3 Continuous Media).
Another situation where the AGD should not be defaulted is when using media that contains
a heavy concentration of pre-print or gaps that may cause false detection of a registration
mark. If this is the case, the value entered for the AGD parameter should be the distance
from the registration mark to the trailing edge of the pre-print or gap that could cause false
detection.
5.4.9 SPG (Steps Past Gap)
This parameter is used to specify the number of steps (thermal dots) to advance the media
after a registration mark has been detected. This parameter is required to properly position
the next label to the dot row. The proper SPG setting for the Model 322M
printer is “285” for