HP Scitex LX850 HP Scitex LX850 & LX820 Printers: User's Guide - English - Page 79

Printhead cleaner roll, Aerosol filters, Ink deposits, How to work with ink system components

Get HP Scitex LX850 PDF manuals and user guides View all HP Scitex LX850 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 79 highlights

CAUTION: Observe precautions when handling printheads because they are ESD-sensitive devices (see the Glossary on page 106). Avoid touching pins, leads and circuitry. The printer's six-color writing system uses three dual-color printheads with a total of 31,680 nozzles (5,280 per color). Printhead cleaner roll The printhead cleaner roll is a roll of absorbent material used to clean surplus ink from the printheads after each pass over the substrate. To change the printhead cleaner roll when necessary, see the Maintenance and troubleshooting guide. 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 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. To change the filters when necessary, see the Maintenance and troubleshooting guide. Ink deposits In order to check the status of the printhead nozzles, the printer expels a few drops of ink from each nozzle of each printhead into the ink deposits. This is done at the start of each print job, whenever a printhead is replaced, and whenever you request a printhead check from the HP Internal Print Server. To clean the ink deposits when necessary, see the Maintenance and troubleshooting guide. How to work with ink system components Remove an ink cartridge An ink cartridge should be removed and replaced when it is empty or past its expiry date. An empty cartridge is indicated in the HP Internal Print Server and by an orange blinking light beside the cartridge itself. You may also decide to remove a cartridge if it contains little ink and you want to provide for a long period of unattended printing. The printer can continue printing without any ink cartridges for at least 20 minutes, depending on the print mode and the job being printed. Therefore, cartridges can be replaced while printing continues. A functional ink cartridge is required in order to start a new job. 1. Go to the cartridge that you intend to remove. The black, yellow and cyan cartridges sit at the front of the printer; the magenta, light magenta and light cyan cartridges are at the rear. Ink and printheads ENWW How to work with ink system components 75

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
CAUTION:
Observe precautions when handling printheads because they are ESD-sensitive devices
(see the
Glossary
on page
106
). Avoid touching pins, leads and circuitry.
The printer's six-color writing system uses three dual-color printheads with a total of 31,680 nozzles
(5,280 per color).
Printhead cleaner roll
The printhead cleaner roll is a roll of absorbent material used to clean surplus ink from the printheads
after each pass over the substrate.
To change the printhead cleaner roll when necessary, see the
Maintenance and troubleshooting guide
.
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
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.
To change the filters when necessary, see the
Maintenance and troubleshooting guide
.
Ink deposits
In order to check the status of the printhead nozzles, the printer expels a few drops of ink from each
nozzle of each printhead into the ink deposits. This is done at the start of each print job, whenever a
printhead is replaced, and whenever you request a printhead check from the HP Internal Print Server.
To clean the ink deposits when necessary, see the
Maintenance and troubleshooting guide
.
How to work with ink system components
Remove an ink cartridge
An ink cartridge should be removed and replaced when it is empty or past its expiry date. An empty
cartridge is indicated in the HP Internal Print Server and by an orange blinking light beside the
cartridge itself. You may also decide to remove a cartridge if it contains little ink and you want to
provide for a long period of unattended printing.
The printer can continue printing without any ink cartridges for at least 20 minutes, depending on the
print mode and the job being printed. Therefore, cartridges can be replaced while printing continues. A
functional ink cartridge is required in order to start a new job.
1.
Go to the cartridge that you intend to remove. The black, yellow and cyan cartridges sit at the
front of the printer; the magenta, light magenta and light cyan cartridges are at the rear.
ENWW
How to work with ink system components
75
Ink and printheads