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REV.-A
Head slant adjustment
This adjustment is required in the following cases:
•
When the horizontal dot spacing becomes too wide (extra space is added between the characters)
•
When the printhead is replaced
•
When any part related to carriage and head installation, such as the carriage, guide shaft, or frame,
is replaced or removed
The head slant adjustment corrects the head slant angle when the printhead is installed using the head
adjust pin (this is required because every head and carriage has different dimensions within the
specified tolerances). If the head slant is not correct, the following problem could occur if two rows
of nozzles on the printhead were misaligned:
•
Extra space is added between horizontal dots (the printed dots shift).
Bidirectional printing adjustment
This adjustment is required in the following cases:
•
When the horizontal printing positions (characters) are misaligned.
•
When either the control panel, printer mechanism, or both are replaced (unit replacement).
•
When any part related to carriage operation, such as the carriage, carriage motor, timing belt, guide
shaft, or frame, is replaced or removed.
The bidirectional printing alignment uses the control circuit to correct any differences in timing for the
odd-numbered lines and even-numbered lines in the bidirectional printing mode (These differences are
due to the tolerances of the printer mechanism parts). If the printing positions are misaligned, the
following might occur:
•
During bidirectional printing, columns printed in the odd-numbered lines are shifted with respect
to those in the even-numbered lines.
•
Vertical ruled lines are misaligned.
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