HP L25500 manual Color calibration, Color profiles, Faster printing

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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 grain.

●With 4 or 6 passes, the printer is more sensitive to substrate advance problems.

●With 4 or 6 passes, reducing the ink quantity may improve print quality.

●If you are using the high ink limit option, you must use at least 12 passes.

●As you reduce the number of passes, the best curing temperature may be more difficult to find, and may be more sensitive to the ambient temperature and humidity.

Here are some other suggestions for increasing the speed of printing.

●Concatenating prints saves time, because one can be sent while another is being printed.

●Disable the cutter. With most substrates, this saves some time at the end of the printing process.

●Increase the cool-down curing temperatures. This also saves some time at the end of the printing process, but may cause slight substrate deformation, depending on the substrate.

See also Printer states on page 60.

Color calibration

The purpose of color calibration is to produce consistent colors with the specific printheads, inks and substrate that you are using, and in your particular environmental conditions. After color calibration, you can expect to get identical prints from your printer on different occasions.

Color calibration can be launched from your RIP software; see your RIP documentation for details.

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 black, its colors may be consistent but they are not accurate.

In order to print accurate colors, it is necessary to convert the color values in your files to the color values that will produce the correct colors from your printer, your inks and your substrate. A color profile is a description of a printer, ink and substrate combination that contains all the information needed for these color conversions.

These color conversions are performed by your Raster Image Processor (RIP), not by the printer. For further information on the use of color profiles, see the documentation for your application software and for your RIP.

In addition to the color profiles used for printing, you may wish to calibrate and profile your monitor (display device), so that the colors you see on the screen relate more closely to those that you see on your prints.

Handle the substrate

ENWW

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Contents HP Designjet L25500 Printer series Trademarks Legal noticesTable of contents Printer specifications AccessoriesElectrical shock hazard Safety precautionsGeneral safety guidelines IntroductionFire hazard Heat hazardMechanical hazard Ink handling Heavy substrate hazardLabel Explanation Printers main featuresFront view 60-in printer Printers main componentsRear view 60-in printer Front panel Take-up reel motorEmbedded Web Server Main tab Setup tabSupport tab Connection type Speed Maximum cable length Other factors Connectivity and software instructionsConnection method Connect to a networkPrinter setup options Basic setup optionsTurn the printer on and off Change the language of the front panel Restart the printerEmbedded Web Server setup options Change the language of the Embedded Web Server Overview Handle the substrateUse substrate Supported substrate families Load a roll onto the spindleSubstrate family Substrate types Load a roll onto the spindle Handle the substrate Load a roll into the printer Substrate Change loaded substrate Handle the substrate Exceptional procedure roll detached from spindle Normal procedure roll attached to spindleUnload a roll from the printer Load a roll onto the take-up reel Use the take-up reelHandle the substrate Handle the substrate Handle the substrate Enww Handle the substrate Unload a roll from the take-up reel Handle the substrate Store the substrate View information about the substrateAdd a new substrate type Download substrate presetsSummary Substrate family Description Select printer settings and color profileSubstrate family Paper-Solvent Setting Description If too low If too highHP Photorealistic 100 Substrate at the beginning Key Select the number of passesVinyl Check the ink quantity Coalescence, grain Color profiles Color calibrationFaster printing Ink system components Handle the ink systemInk cartridges Printheads Printhead cleaning container Printhead cleaning cartridgeInk funnel Work with ink system components Ink system tipsReplace an ink cartridge Remove an ink cartridge Work with ink system components Insert an ink cartridge Replace a printhead Remove a printhead Handle the ink system Insert a printhead Handle the ink system Handle the ink system Remove the printhead cleaning cartridge Replace the printhead cleaning kitHandle the ink system Insert the printhead cleaning cartridge Replace the ink funnel Handle the ink system Cartridge Order ink suppliesPrinthead Printhead cleanerPrinter states Print optionsChange margins Request the printers internal prints Order accessories AccessoriesName Functional specifications Printer specificationsMinimum Maximum Ecological specifications Physical specificationsMemory specifications Power specificationsAcoustic specifications Environmental specificationsAirflow GlossaryLED Margins IndexOrder Enww
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