HP Designjet L28500 HP Designjet L28500 Printer Series - User's guide - Page 81

Printhead cleaning kit

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The printheads are extremely durable and do not need to be replaced every time an ink cartridge is replaced. They provide excellent results even when the ink cartridges contain a low level of ink. To maintain optimum print quality, the printheads are automatically tested at regular intervals, and automatically serviced when necessary. This takes a little time and can occasionally delay printing. When a printhead eventually needs to be replaced, the front panel will display a message. CAUTION: Avoid touching pins, leads, and circuitry when handling printheads because these elements are sensitive to electrostatic discharge. Such devices are called ESD-sensitive devices. See Glossary on page 165. Electrostatic discharges are one of the main hazards to electronics products. This type of damage can reduce the life expectancy of the device. Printhead cleaning kit The printhead cleaning kit contains the printhead cleaning cartridge, the ink funnel and the ink filter. Printhead cleaning cartridge The printhead cleaning cartridge cleans and maintains the printheads, and seals the printheads when they are not in use to prevent them from drying out. The cartridge contains a roll of cloth, which is used to clean the printheads. You are notified when 92% of the roll has been used, after which the cartridge should continue to function for about another 140 m² (1500 ft²) of printed area. A new roll lasts for about 1850 m² (20000 ft²) of printed area. NOTE: These figures can vary considerably depending on the image density, the print mode, and the ambient temperature. The cloth will be exhausted much faster with a high-density print, many passes, a hot environment, and if you have selected the Extra PH cleaning option in the front panel because of a print-quality problem (see Horizontal banding on page 128). Remember to turn this option off when you no longer need it. ENWW Ink system components 75

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The printheads are extremely durable and do
not
need to be replaced every time an ink cartridge is
replaced. They provide excellent results even when the ink cartridges contain a low level of ink.
To maintain optimum print quality, the printheads are automatically tested at regular intervals, and
automatically serviced when necessary. This takes a little time and can occasionally delay printing.
When a printhead eventually needs to be replaced, the front panel will display a message.
CAUTION:
Avoid touching pins, leads, and circuitry when handling printheads because these
elements are sensitive to electrostatic discharge. Such devices are called ESD-sensitive devices. See
Glossary
on page
165
. Electrostatic discharges are one of the main hazards to electronics products.
This type of damage can reduce the life expectancy of the device.
Printhead cleaning kit
The printhead cleaning kit contains the printhead cleaning cartridge, the ink funnel and the ink filter.
Printhead cleaning cartridge
The printhead cleaning cartridge cleans and maintains the printheads, and seals the printheads when
they are not in use to prevent them from drying out.
The cartridge contains a roll of cloth, which is used to clean the printheads. You are notified when 92%
of the roll has been used, after which the cartridge should continue to function for about another 140
m² (1500 ft²) of printed area. A new roll lasts for about 1850 m² (20000 ft²) of printed area.
NOTE:
These figures can vary considerably depending on the image density, the print mode, and the
ambient temperature. The cloth will be exhausted much faster with a high-density print, many passes, a
hot environment, and if you have selected the
Extra PH cleaning
option in the front panel because
of a print-quality problem (see
Horizontal banding
on page
128
). Remember to turn this option off
when you no longer need it.
ENWW
Ink system components
75