HP Latex 3000 Printer - Manual (Page 100)

CAUTION: Observe precautions when handling printheads because they are ESD-sensitive devices (see the
Glossary on page 301 ). Avoid touching pins, leads and circuitry.
The printer's six-color writing system uses six dual-color printheads with a total of 63,360 nozzles, and an HP
Latex Optimizer printhead with 10,560 nozzles.
Printheads should be stored vertically: if boxed, with the box arrows pointing up; if out of the box, with the
nozzle cap up.
Printhead cleaner roll
The printhead wiper roll is a roll of absorbent material used in the normal operation of the printer to wipe the
printheads periodically (at the beginning and end of printing, on printhead check and clean, and so on). This
helps the printheads to deliver continuous ink and maintain print quality.
The roll should be replaced whenever it is used up, to avoid damaging the printheads. The frequency of
replacement depends on your use of the printer. A single roll will last approximately 40 liters; this may take
about 3.5 weeks at a usage level of 5,000 m²/month (50,000 ft²/month).
An alert is displayed when 75% of the roll has been used, and again when 95% of it has been used. You can
choose to replace the roll at any time. The printer will not print when the roll has been 100% used.
If there is not enough of the roll to start a new job, the printer cancels the job.
To change the printhead cleaner roll, see Replace the printhead cleaning roll on page 111 . The HP 881 Latex
Cleaning Roll can be ordered in the normal way.
TIP: You should not touch the printhead cleaner roll except when you need to replace it. Any interference
with the roll may prevent the printer from keeping track of roll usage, in which case you may see spurious
error messages, and a printing job may be cancelled unnecessarily.
Aerosol filters and drying filters
The printheads produce many fine droplets of ink, most of which are placed accurately on the substrate.
However, a small proportion of these droplets escape sideways; the two aerosol filters are placed on either
side of the printhead carriage to intercept them.
The drying filters keep dust and aerosol off the drying lamps.
The filters should be changed every time the printhead cleaning roll is replaced. They are provided with the
HP 881 Latex Cleaning Roll.
Left spittoon
The left spittoon is a rectangular piece of foam that allows the printhead nozzles to be refreshed at the left
side, before printing a pass from left to right.
94 Chapter 5 Handle the ink system ENWW