HP Designjet L25500 42 in User Manual

							7.Close and lock the window.
Replace the printhead cleaning container
CAUTION:You are recommended to wear gloves.
1.Remove the printhead cleaning container.
2.Insert the new printhead cleaning container.
3.Ensure that the tube is pointing into the center of the container.
Order ink supplies
You can order the following ink supplies for your printer.
Table 5-1  Ink cartridges
CartridgeCapacity (ml)Part number
HP 789 Black Latex Designjet Ink Cartridge775CH615A
HP 789 Cyan Latex Designjet Ink Cartridge775CH616A
HP 789 Magenta Latex Designjet Ink Cartridge775CH617A
HP 789 Yellow Latex Designjet Ink Cartridge775CH618A
HP 789 Light Cyan Latex Designjet Ink Cartridge775CH619A
HP 789 Light Magenta Latex Designjet Ink Cartridge 775 CH620A
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Handle the ink system
 
						

							Table 5-2  Printheads
PrintheadPart number
HP 789 Yellow/Black PrintheadCH612A
HP 789 Cyan/Light Cyan PrintheadCH613A
HP 789 Light Magenta/Magenta Printhead CH614A
Table 5-3  Printhead cleaner
Printhead cleanerPart number
HP 789 Printhead Cleaning Kit (contains a printhead cleaning
cartridge and an ink funnel)CH621A
HP 789 Printhead Cleaning Container CH622A
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Handle the ink system
 
						

							6 Print options
Printer states
The printer may be in any one of the following states; some of them require waiting.
●Ready (cold): The printer is powered on but has not printed yet, and the heaters are not turned
on.
●Preparing to print: The printer is warming up the heaters and preparing the printheads to print.
This takes 1 to 8 min.
●Printing
●Curing: This takes 1.5 to 5 min.
●Finishing: The printer is cooling down and preparing for stand-by. This takes 0.5 to 5 min.
●Ready (hot): The printer is ready and the heaters are in stand-by.
◦If a new job arrives the printer goes to Preparing to print.
◦If there is no new job in a period of 10 minutes, the heaters turn off and the printer goes to
Ready (cold).
If jobs of the same print mode as the already-printed file are sent while the printer is Curing (if the cutter
is not enabled) or Finishing, the printer goes to Preparing to print.
To save time between prints, concatenate jobs with the same print mode (same number of passes) and
turn the cutter off to skip the Curing and Finishing states. You can also use nesting to print several
jobs in the same workflow.
Even if the cutter is on or successive jobs use different print modes, it is better to print them all together
without delays to minimize the time spent in Preparing to print.
Change margins
The printer margins determine the area between the edges of your image and the edges of the substrate.
The margins for a particular print job are selected in the RIP software; if the job exceeds the substrate
width, it will be clipped.
In addition, the front panel offers three settings for the bottom margin: normal, small and extended;
see 
Table 8-4 Margins on page 72. This selection only applies to single prints when the cutter is not
in use. The bottom margin is not applied between several prints sent at the same time.
To set the bottom margin at the front panel, select the 
 icon, and then Substrate handling options
> Extra bottom margin.
NOTE:If a larger margin is set in the RIP, it overrides the bottom margin set in the front panel.
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Print options
 
						

							Request the printers internal prints
The internal prints provide various kinds of information about your printer. Request these prints from the
front panel, without using a computer.
Before requesting any internal print, make sure that substrate is loaded and that the Ready message
appears on the front-panel display.
To print an internal print, select the 
 icon, Internal prints, and then select the type of internal print
that you want.
The following internal prints are available:
●Menu map: Shows details of all the front-panel menus.
●Configuration: Shows all the current front-panel settings.
●Usage report: Shows estimates of the total number of prints, number of prints by substrate family,
number of prints by print-quality option, and total amount of ink used per color. The accuracy of
these estimates is not guaranteed.
●Service information: Provides information that service engineers require.
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Print options
 
						

							7 Accessories
Order accessories
The following accessories can be ordered for your printer.
NameProduct number
HP Designjet L25500 42-inch Spindle (spare spindles ease the process of switching between
different substrates)CQ154A
HP Designjet L25500 60-inch Spindle (spare spindles ease the process of switching between
different substrates)CQ155A
HP Designjet L25500 42-inch (2in) SpindleCQ692A
HP Designjet L25500 60-inc (2in) SpindleCQ693A
HP Designjet L25500 User Maintenance Kit CQ201A
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Accessories
 
						

							8 Printer specifications
Functional specifications
Table 8-1  HP No. 789 ink supplies
PrintheadsYellow/black, cyan/light cyan and light magenta/magenta
Printhead cleaning kit and printhead cleaning
containerNon-color-specific
Ink cartridges Yellow, black, magenta, light magenta, cyan and light cyan. All cartridges
contain 775 ml of ink.
Table 8-2  Substrate sizes
MinimumMaximum
Width584 mm (23 in)
Narrow substrate: 254 mm (10 in)1067 mm (42 in) or 1524 mm (60 in)
Length 420 mm (16.5 in) Roll with maximum external diameter of 180 mm
(7.1 in)
Table 8-3  Print resolutions
Ink levelNumber of passesHalftone resolutions (dpi)Print resolutions (dpi)
100%4–28 (except 18)300, 6001200×1200
1812001200×1200
200% 10–28 (except 18)300, 6001200×1200
18 1200 1200×1200
The table above shows the resolutions supported by the printer. See your RIP documentation to find
the resolutions supported by your RIP.
Table 8-4  Margins
Side margins5 mm = 0.2 inches
Top margin (leading edge)5 mm = 0.2 inches
Bottom margin (trailing edge) 5 mm = 0.2 inches (none)
100 mm = 3.9 inches (small)
150 mm = 5.9 inches (normal)
200 mm = 7.9 inches (Extra)
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Printer specifications
 
						

							Physical specifications
Table 8-5  Printer physical specifications
Weight (including stand)161 kg (42-in printer)
181 kg (60-in printer)
Width1985 mm (42-in printer)
2465 mm (60-in printer)
Depth690 mm
Height 1370 mm
Memory specifications
Table 8-6  Memory specifications
Memory (DRAM) supplied256 MB
Memory (DRAM) maximum512 MB
Hard disk 50 GB
Power specifications
NOTE:An electrician is required for the setup and configuration of the building electrical system used
to power the printer and also for printer installation. Make sure that your electrician is appropriately
certified according to local regulations and supplied with all the information regarding the electrical
configuration.
Your printer requires that the following electrical components be supplied and installed by the customer,
according to the National Electrotechnical Code (NEC).
Table 8-7  Single phase line specifications
 60-in printer42-in printer60–in printer (Japan only)
Number of power cords222
Input voltage220-240 V~ (-10%+6%)200-240 V~ (-10%+6%)200V (-10%+10%)
Input frequency50 / 60 Hz50 / 60 Hz50 / 60 Hz
Power consumption4.8 kW (overall consumption
for both power cords)3.5 kW (overall consumption
for both power cords)4.8 kW (overall consumption
for both power cords)
Maximum load current (per
power cord)15 A 13 A 15 A
Ecological specifications
This product complies with European Union WEEE and RoHS Directives.
ENERGY STAR and the ENERGY STAR mark are registered U.S. marks To determine the ENERGY
STAR® qualification status of these product models. See: 
http://www.hp.com/go/energystar.
For up-to-date ecological specifications of your printer, please go to 
http://www.hp.com/ and search for
“ecological specifications”.
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Printer specifications
 
						

							Environmental specifications
Table 8-8  Printer environmental specifications
Relative humidity range for best print quality20–80%, depending on substrate type
Temperature range for best print quality18 to 25°C (64 to 77°F), depending on substrate type
Temperature range for printing15 to 30°C (59 to 86°F)
Temperature range when not in operation-25 to +55°C (-13 to +131°F)
Temperature gradientno more than 10°C/h (18°F/h)
Maximum altitude when printing 3000 m (10000 ft)
NOTE:The printer must be kept indoors.
NOTE:If the printer or ink cartridges are moved from a cold location to a warm and humid location,
water from the atmosphere can condensate on the printer parts and cartridges and can result in ink
leaks and printer errors. In this case, HP recommends that you wait at least 3 hours before turning on
the printer or installing the ink cartridges, to allow the condensate to evaporate.
Acoustic specifications
Table 8-9  Printer acoustic specifications
Idle sound power≤ 5.1 B (A)
Operating sound power≤ 7.5 B (A)
Idle sound pressure≤ 39 dB (A)
Operating sound pressure≤ 56 dB (A)
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Printer specifications
 
						

							Glossary
Airflow
Air is blown through the printing zone to speed up the drying process.
Back tension
The backwards tension applied to the substrate by the input spindle, which must be constant across the width of
the substrate. Too much or too little tension may cause substrate deformation and print quality defects.
Bidirectional
Bidirectional printing means that the printheads print while moving in both directions. This increases the speed of
printing.
Bleeding
A print-quality defect that occurs when the ink spreads on the substrate across areas of different colors.
Coalescence
A print-quality defect that occurs when the ink spreads on the substrate within an area of the same color.
Cockle
A substrate condition in which it is not lying perfectly flat, but rises and falls slightly in shallow waves.
Color accuracy
The ability to print colors that match the original image as closely as possible, given the fact that all devices have
a limited color gamut and might not be able to match certain colors precisely.
Color consistency
The ability to print the same colors in a particular print job, from print to print and from printer to printer.
Curing
The substrate is heated in the curing zone to coalesce the latex, creating a polymeric film which acts as a protective
layer, while at the same time removing the remaining co-solvents from the print. Curing is vital to ensure the
durability of the printed images. Too high or too low a curing temperature may cause print quality defects.
Cutter
A printer component that slides back and forth across the platen to cut the substrate.
Drying
The substrate is heated in the printing zone to dry the ink and fix the image to the substrate. Too high or too low
a drying temperature may cause print quality defects.
Firmware
Software that controls your printers functionality and is stored semi-permanently in the printer (it can be updated).
Gamut
The range of colors and density values reproducible on an output device, such as a printer or monitor.
I/O
Input/Output: this term describes the passing of data between one device and another.
ICC
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							The International Color Consortium, a group of companies that have agreed on a common standard for color
profiles.
Ink density
The relative amount of ink that is deposited on the substrate per unit of area.
IP address
A unique identifier that identifies a particular node on a TCP/IP network. It consists of four integers separated by
dots.
LED
Light-Emitting Diode: a semiconductor device that emits light when electrically stimulated.
Minimum drying power
The minimum heat applied in the printing zone so that the substrate does not cool too much in lightly-inked areas.
Low minimum power may cause print quality defects; high minimum power may damage the substrate, especially
with a high number of passes and in blank or lightly-inked areas.
Nozzle
One of many tiny holes in a printhead through which ink is deposited onto the substrate.
OMAS
Optical Media Advance Sensor. The sensor located in the print platen that tracks the substrate movement and
increases its accuracy.
Passes
The number of print passes specifies how many times the printheads will print on the same area of substrate. A
higher number of passes tends to improve print quality and printhead health, but reduces the speed of printing.
Platen
The flat surface within the printer over which the substrate passes while it is being printed on.
Printhead
A removable printer component that takes ink of one or more colors from the corresponding ink cartridge(s) and
deposits it on the substrate, through a cluster of nozzles.
Spindle
A rod that supports a roll of substrate while it is being used for printing.
Substrate
A thin, flat material designed to be printed on, made of paper or other materials.
Substrate advance compensation
A slight adjustment to the amount of substrate advance between print passes, to compensate for the characteristics
of different substrate types. The printer normally performs this adjustment automatically, but may need to be
recalibrated for substrates not supported by HP, or for an unusual ambient temperature or humidity. Incorrect
substrate advance compensation may cause banding with fewer than 8 passes, or graininess with 8 passes or
more.
Unidirectional
Unidirectional printing means that the printheads print only while moving in one direction. The speed of printing is
lower than in bidirectional. In general, print bidirectional and increasing the number of passes is a better way of
improving print quality.
Vacuum pressure
The substrate is held flat against the platen by vacuum suction. Too much or too little suction may cause print
quality defects. Too little suction may also cause a substrate jam or damage the printheads.
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