Linx 4900 Operating Manual page 182

Step 1: Define the Required Raster Pitch for the
Application
For each message type on each printhead (Ultima or Ultima plus), there is a
drop pitch that gives the best quality print, that is, a 1:1 aspect ratio at the
default printer settings. This value is known as the Ideal Raster Pitch.
For a particular application, you may want to choose a different pitch,
bearing in mind that the aspect ratio can be adjusted using the Print
Height setting (see Chapter 3, 'Day-to-Day Operations').
The following table shows you how to calculate the required raster pitch:
Required raster pitch (mm) =
Where:
Number of Characters =
The width of a character varies according to the size of the character set
chosen. The following table (Figure A-8) shows the character widths for
each character set. These figures include the gaps between characters; this
introduces a small error as the gap after the last character is not printed.
MP65492–1
CALCULATING THE REQUIRED RASTER PITCH (mm)
Number of Characters x Character Width (rasters)
=
Number of Rasters in Message
Printed Length = Length of message on product. This must be less
than the length of any area left clear for printing.
Number of characters in the longest line of the
message.
Character Width = Number of rasters in each character; see the table
below showing character widths.
Figure A-7 Calculating the Required Raster Pitch
Character Set
5 FH (Caps)
7 FH (Caps)
16 FH (Caps)
16 non-FH
7 Arab Num
16 Arab Num
Figure A-8 Character Widths
163
Appendix A: Installation and Setup
Printed Length (mm)
Printed Length (mm)
Character Width
6
6
11
11
8
11
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