User guide

Physical Page Characteristics of the LA600 MultiPrinter
16.6 Printhead Gap Control (DECPHGC)
• The paper source has changed.
• Paper is inserted manually.
• Fanfold paper has moved from the parked position.
• Power-up has occurred.
• Printing resumes after an offline condition, which the resulted from either
user action on the Start/Stop key or a fault.
• A DECPHGC command is received with Ps=0 on the previous page or prior
to loading the paper.
• Paper is loaded at the time DECPHGC with Ps=0 is processed.
In AGC mode, the printer adjusts the printhhead after performing a paper
thickness measurement at the active position. This reference point is the first
print line, and the horizontal position is defined by setup, ‘‘ADJUSTMENT’’
feature, ‘‘AGC’’ function.
In PCC mode, the AGC function is inhibited. PCC mode remains active as
long as the current paper or form is not ejected and the paper source does not
change. The mode is reset when a DECASFC command with Ps=0 is received.
16.7 Horizontal Text Resolution
The LA600 maintains accurate positioning for all horizontal pitches. When
translating to the physical resolution of 1/720", positioning accuracy will be lost
for the pitches indicated in Table 16–4, but in all cases it will be no more than
1/1440". This error does not accumulate from character to character, so there
is no overall error accumulation across a line of text.
Note
For Sixel Graphics mode resolution fallbacks, see Table 21–2.
Table 16–4 Horizontal Text Resolution and Error
Target Pitch
Selected HAI in
Centipoints Actual in 1/720" Error
5 1440 144 None
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Physical Page Characteristics of the LA600 MultiPrinter 16–5