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HP Designjet L26500/L28500 Edge B8K59A The ink smudges when touched, or looks oily, The dimensions of the print are wrong

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images Troubleshoot

The ink smudges when touched, or looks oily

There are various different circumstances in which these symptoms can be seen.

●When there is a big transition from light to dark colors across the length or width of the substrate Increase the minimum drying power.

NOTE: This solution is specific to this problem, and should not be used in other cases, when it could cause further problems.

●When the symptoms can be seen only at the start of the first print after the printer has been idle for some time (especially when the start of the print uses a lot of ink)

Increase the warm-up drying temperature offset and the warm-up curing temperature offset. If necessary, increase the stable drying and curing temperatures, or slightly reduce the ink limits.

●When the symptoms can be seen only at the left and right sides of the print

Increase the drying and curing temperatures, decrease the overall ink quantity and/or increase the number of passes.

●When the symptoms can be seen only in certain parts of the print that use a lot of ink

Increase the drying and curing temperatures, decrease the overall ink quantity and/or increase the number of passes.

●When the symptoms can be seen only in the center of the print Check that all fans are working correctly.

●After reducing the number of passes

Increase the drying and curing temperatures and/or decrease the overall ink quantity.

●When the oily finish appears minutes or hours after printing

Store the print face-up and uncovered; the effect normally disappears after a while.

NOTE: If you decrease the overall ink quantity, you may notice less color saturation.

The dimensions of the print are wrong

As the substrate is heated during the drying and curing processes, some substrates will shrink (and some may expand) after the image has been printed. This may be inconvenient if the print has to be framed or if several prints are to be to be tiled one next to the other.

See The substrate has shrunk or expanded on page 68.

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Chapter 6 Troubleshoot print-quality issues

ENWW

Contents

Page Page Table of contents Page Page Page 1 Safety precautions General safety guidelines Electrical shock hazard Heat hazard Fire hazard Mechanical hazard Heavy substrate hazard Ink handling Warnings and cautions Warning labels 2 Printer status Check printer status Check the status of the ink system Check the status of the ink cartridges Ink menu procedure Check the status of a printhead Check the file system Printer alerts 3 Firmware update 4 Hardware maintenance Ink system tips Check substrate porosity Page Clean the electrical connections on a printhead Page Page Clean the exterior of the printer Clean the platen Page Page Clean after porous substrates Clean (recover) the printheads Clean the substrate-advancesensor window Lubricate the printhead carriage Lubricate the platen rollers hardwareMaintain Maintain the ink cartridges Move or store the printer Replace an ink cartridge Page Page Refilled and non-HPink cartridges Replace the ink maintenance kit Page Page Replace a printhead Page Page Page Page Replace the printhead cleaning kit Page Page Page Page Service maintenance 5 Substrate settings Download media presets Add a new substrate Summary Select printer settings and color profile settings Substrate Page Load the substrate and print the diagnostic plot Change settings while printing Advanced settings Page Temperature profile Select the number of passes Check the quantity of ink on the substrate Page Faster printing Color calibration Color profiles Color reproduction tricks 6 Troubleshoot print-qualityissues General printing advice Use the printhead status plot Print the printhead status plot Interpret the printhead status plot Graininess Horizontal banding Adjust the substrate advance Vertical banding The print is deformed into a curved shape Misaligned colors Color intensity varies Lack of sharpness Black areas look hazy Ink smears Subtle stains or uneven appearance The ink smudges when touched, or looks oily The dimensions of the print are wrong Tiling issues 7 Troubleshoot substrate issues The substrate cannot be loaded successfully The substrate is mispositioned The substrate has jammed Check the substrate path Check the printhead path Page Avoiding substrate jams The substrate is deformed or wrinkled The substrate has shrunk or expanded The substrate has bow deformation Take-up reel substrate jam The automatic cutter does not work Take-upreel does not wind Page 8 Troubleshoot ink-systemissues Ink maintenance kit needs to be installed Cannot insert an ink cartridge Cannot insert a printhead Cannot insert the printhead cleaning cartridge Front panel recommends reseating or replacing a printhead Clean the printheads Page Page 9 Troubleshoot other issues The printer cannot get an IP address Cannot access the Embedded Web Server The printer is not printing The software program slows down or stalls while generating the print job The printer seems slow Cannot access files on the hard disk Communication failures between computer and printer The platen rollers squeak 10 Front-panelerror messages Error messages Page Page Page Printer logs 11 When you need help Introduction Documentation Customer Self Repair HP Customer Care Centers Telephone number Service information ASummary of common printing problems Index