HP Business Inkjet 2600 Printer series - Manual (Page 109)

ENWW 8-27
Replacing ink cartridges and printheads
Replace the ink cartridges and printheads when the following
messages appear on the LCD control panel:
[COLOR] INK CARTRIDGE EMPTY
REPLACE [COLOR] INK CARTRIDGE
REPLACE [COLOR] PRINTHEAD
For installation information, see the instructions included with the ink
cartridges or printheads.
Maintaining the printheads
Printhead information
The printheads for your printer have microscopic nozzles that can clog
when exposed to the air for more than a few minutes. The printer is
designed to prevent nozzles from drying out when the printer is idle and
when it is turned off using the
P OWER button on the printer.
A printhead that is not used for long periods of time can also clog,
resulting in a noticeable decrease in print quality. To unclog the
nozzles, clean the printheads.
Cleaning the printheads
Clean the printheads when lines or dots are missing from printed text or
graphics. These defects occur when ink nozzles in the printheads are
exposed to air for prolonged periods of time.
Note Cleaning the printheads unnecessarily wastes ink and shortens the life
of the printheads.