Advanced Poly-Packaging Ti-1000, Operation Manual

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5.4 Print Head Replacement
Replacement of the print head is necessary when the print quality is not satisfactory.
Prior to removing the print head, turn the power off unplug the cord from the power source and
disconnect the air.
Remove the handle screws and remove the handle end to separate the upper head assembly from the
lower head assembly (Fig. 5-3).
Slide the bottom assembly to the left and the top assembly to the right so that the top assembly and
bottom assembly are separated and you have access to the print head.
Turn the knob (Fig 5-2) clockwise and with a magnetic Phillips head screwdriver, remove the screws
which hold the print head to the print head. The print head will then drop, remaining connected to the
connectors (Fig. 5-2). Turn the knob counter clockwise and disconnect the connectors to detach the
print head from the print block.
Caution:
Never touch the element when handling the print head. Never touch the connector pins to
avoid a breakdown of the print head by static electricity. Never remove the six screws on the side of the
print block. Never remove the print block, otherwise it requires the adjustment of the position when
reassembling.
Reconnect the connectors, position the print head and secure the screws. Test the print following the
steps in section 5.5.
5.5 Note on Print Quality
Print quality is achieved through proper pressure, head temperature and print speed. Barring any
equipment excess wear or failure of components, insufficient pressure or poor alignment, too much or
too little temperature or too fast print speed may cause poor print quality (skipping, smearing).
5.6 Print Head Course Alignment
With the air disconnected, but the power turned ON, rotate the knob (Fig. 5-4, Item 5) clockwise so that
the print head just barely touches the platen roller.
Looking at the gap between platen roller and print head, inspect to see if the head is parallel with the
roller. Raise and lower the print head very slowly by turning the knob clockwise and counter clockwise.
The head should contact the roller evenly. If the head is not parallel more than 30 thousands on either
side, than course alignment is necessary.
To align the print head to the platen roller that is more than 30 thousands out of alignment, loosen the
screws on Course Adjustment Plate (Fig. 5-4, Item 4) and reposition plate to make the print head parallel
to the platen roller. Retighten screws on the course adjustment plate.
Caution:
Never remove the screws on course adjustment plate.
Reconnect air to the printer and test print. If print quality is satisfactory, continue printing. If print
quality is not sufficient, fine adjustment of the print head is necessary. See section 5.9 for fine
adjustment steps.