Appendix C: Line Speeds and Print Quality
Linx 4900 Operating Manual 192 MP65492–1
C.3 Ideal Raster Pitch
As illustrated in the tables on the previous pages, maximum line speeds are
shown for ‘Ideal Raster Pitch’. Ideal raster pitch is dependent on the
message type being used. For each message type, with each printhead type
there is a drop pitch that gives the best quality print, i.e. 1:1 aspect ratio at
the default printer settings. This value is known as the Ideal Raster Pitch.
Tables contained in Appendix A, ‘Installation and Setup’ list the ideal
raster pitch values for each message type.
Line speeds can be adjusted if printing is not at ideal raster pitch (see
Appendix A, ‘Installation and Setup’ for further information).
As ink jet printers use individual drops of ink to form a character or image,
the speed at which the substrate passes the printhead determines how the
print appears. The faster the speed, the more separated the drops. The
slower the speed, the more concentrated the drops.
Character heights using Linear Wide message types have increased height
because the pitch is larger. This helps to form ‘square’ (more precisely
uniform) characters.
For a particular application, you may wish to choose a different pitch,
bearing in mind that the aspect ratio can be adjusted using the Print Width
option.
4900 Op Manual.book Page 192 Tuesday, September 9, 2003 12:32 PM
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