HP Designjet L25500 42 in User Manual

3.Too little ink: The whole chart looks washed out.
Try increasing the amount of ink in your RIP software, then reprint the chart and check again.
NOTE:Backlit and some fabrics substrates usually require to be used with the “High Ink Limit” option
enabled in the RIP.
Faster printing
The obvious way to increase speed is to reduce the number of print passes, although this will tend to
reduce print quality. Bear in mind the following considerations.
●With fewer than 10 passes, you may see an increase in...

In outline, the process consists of the following steps.
1.A calibration test chart is printed.
2.The HP Embedded Spectrophotometer (or, if you prefer, a different spectrophotometer) scans and
measures the test chart.
3.The RIP uses the measurements to calculate the necessary correction factors for consistent color
printing on that substrate.
Color profiles
Color calibration provides consistent colors, but consistent colors are not necessarily accurate. For
instance, if your printer prints all colors as...

5 Handle the ink system
Ink system components
Ink cartridges
The printers six ink cartridges provide magenta, light magenta, black, yellow, light cyan and cyan ink
to the printheads. Each cartridge has a capacity of 775 ml.
Ink cartridges require no maintenance or cleaning. When each ink cartridge is shaken vigorously before
installation, and inserted correctly into its slot, the ink will flow to the printheads. Because the printheads
control the amount of ink that is transferred to the page,...

Although it is possible to use refilled or non-HP ink cartridges, either choice has several serious
disadvantages:
●There is some risk of damaging the printer. In this case the printer warranty will not be valid for any
printer repairs that are related to the cartridge, nor for any problems due to ink contamination.
●You will invalidate the warranty of all printheads of the same color used in the printer subsequently,
unless and until the whole ink system (including ink tubes) is replaced.
●Print quality...

CAUTION:Avoid touching pins, leads, and circuitry when handling ink cartridges because these
elements are sensitive to electrostatic discharge. Such devices are called ESD-sensitive devices.
See 
Glossary on page 75. 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 cartridge
The printhead cleaning cartridge cleans and maintains the printheads, and seals the printheads when
they are not in use...

Ink system tips
For best results, always follow these guidelines:
●Install the ink cartridges, printheads and printhead cleaning cartridge before the warranty-ends
date, which is printed on the product label and packaging.
NOTE:The ink cartridges normally expire some time after the warranty ends. Refer to the ink
cartridge information on the front panel for the expiration date.
●Follow the instructions on the front panel during installation.
●Allow the printer and the printhead cleaning cartridge to...

●The ink cartridge is empty or faulty, and you must replace it to continue printing.
CAUTION:The procedure to remove an ink cartridge must be initiated from the front panel. Do not
remove an ink cartridge until the front panel prompts you.
CAUTION:Remove an ink cartridge only if you are ready to insert another one.
WARNING!Make sure that the printer wheels are locked (the brake lever is pressed down) to prevent
the printer from moving.
Remove an ink cartridge
1.On the printers front panel, select the...

3.Pull the blue tab down and then pull it outwards, towards you.
4.The cartridge comes out, in its drawer.
5.Lift the cartridge out of its drawer.
NOTE:Avoid touching the end of the cartridge that is inserted into the printer, because the
connection might be coated with ink.
NOTE:If necessary, store a partially-used ink cartridge in the same position as if it were inserted
in the printer. Avoid using a partially-used cartridge that has been stored on its end.
54 Chapter 5   Handle the ink system ENWW...

6.The front-panel display identifies the missing ink cartridge.
Insert an ink cartridge
1.Pick up the new ink cartridge and find the label that identifies the ink color. Hold the ink cartridge
so that you can see the label at the top of the side that is facing you.
2.Check that the colored label above the empty slot in the printer matches the color of the label on
the cartridge.
3.Shake the cartridge vigorously for about 15 seconds.
4.Insert the ink cartridge into the cartridge drawer.
ENWW Work with ink...

5.Slide the drawer and cartridge into the slot until they lock into position.
If you have difficulty, see the Maintenance and troubleshooting guide.
6.The front-panel display confirms that all cartridges have been correctly inserted.
Replace a printhead
Printhead replacement must be performed after the printer has been turned on with the hard power
switch at the back of the printer.
WARNING!Make sure that the printer wheels are locked (the brake lever is pressed down) to prevent
the printer from moving....