DEFINING YOUR OWN NLQ CHARACTERS
As youprobablynoticed,NLQcharactersareprintedby twopassesof the
printhead.Halfof thecharacterisprintedonthefirstpass,andtheremain-
deron the secondpass.Thepaperis rolledup half a dotheightin between
passesto let the print head printdots on the secondpass that overlapthe
previousdots,in orderto fill in the spacesandproducedensercharacters.
Additionally,the print head speedis halved, and the dots are printed at
doublethedensityof draftcharacters.For thisreason,IW,Qcharacterscan
containup to 23 dots in thehorizontaldirection.
Fundamentally,theprocessto defineandprintdownloadedNLQcharacter
is the sameasfor draftcharacters,exceptthatyoumustassignthecharac-
ter data accordingto theemulationmode,you are using.
Assigningthe characterdata with the Standard
mode
Thereare differencesinthe waythe attributeinformationis processed.
In the draftqualitymodethe attributebytecarriesthedescenderdata,and
specifiestheleftspaceandthecharacterwidth.IntheNLQmode,therare
ASCIICode
Left space:
Character width:
Right space:
Figure 5-4. Use this grid (or one similar to it) to define your own NLQ characters with the Standard mode
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