Microcom 438 - Manual (Page 34)

Chapter 4 Designing Labels with LDS
438 Operator’s Manual - 880052-0100 4-9
print on each label. The table below lists proper SPG settings for particular printer
configurations when the LSY is greater than the parameter value.
Model/Print Head DPI D2G Value
438 – 203 DPI 468
438 – 300 DPI 730
Table 4-3 Dot to Gap Parameters
For media that has a LSY value less than the parameter value in table 4-3, the SPG will
need to be calculated. SPG can be calculated using this formula:
SPG = (D2G + LSY - DRM) mod (LSY + SBL)
NOTE: All values are in pixels or dots.
D2G = This is a physical distance from the registration sensors to the print head's dot row,
and is a specific value for each model.
LSY = This is the actual height of the media in pixels or dots.
DRM = The Distance to Registration Mark is the distance from the leading edge of the
printable area to the beginning of the registration mark.
SBL = The Space Between Labels is the non-printable distance between the media,
typically found on die-cut labels. If the media contains space between the actual
printable portions of the media being used, this would be the SBL parameter.
Please note that this does not reflect a blowhole or black line height, as these
registration marks are typically positioned within the printable area. When die-cut
media is used, this value is also used in the GAP header parameter.
Calculation Examples:
Die-cut Media:
A 424 203 DPI printer being used with 3" x 1" media containing a .125" die-cut gap. The
SPG would be calculated as follows:
SPG = (D2G + LSY - DRM) mod (LSY + SBL)
SPG = (468 + 203 - 203) mod (203 + 25)
SPG = 468 mod 228
SPG = 12
D2G (468) = The Dot to Gap distance for a 203 DPI 424 printer (Table 4-3).
LSY (203) =
The height of the printable area; 1" x 203 DPI = 203 dots.