L25500 Troubleshooting
Contents
1. Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting O invent 5 IMAGE QUALITY TROUBLESHOOTING Before continuing please check the following items Ensure that all previous steps in the Add New Substrate procedure have been followed Check that the media physically loaded is the same that has been specified in the Front Panel and in the RIP Substrate Jams or Ink Smears Cause Solutions Media Jam you have a substrate jam or an ink smear along the whole image l Media may have been loaded with too much skew Substrate shape may be affected by Drying Temperature Make sure that you have not skipped the Media was loaded with too much skew warning on the media load process Simultaneously do the following actions until the problem disappears o Set the Drying Temperature to 50 C and o Increase the vacuum level in steps of 5 mmH2O Do not go over the following limits Substrate family Maximum or Printer vacuum level Media Profile mmH20 Banner 20 Vinyl 35 Other families 50 o Increase Back tension in 5 steps up to 30 maximum Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting z invent The initial portion of the image has been affected by the Curing process of the previous plot Try the2. Substrate family Banner Self Adhesive Fabric Paper Solvent HP Photorealistic Paper Aqueous Warmup drying Advanced options Warmup curing 5 0 Cool down drying temperature offset temperature offset temperature offset 0 0 Cool down curing temperature offset Setting Explanation If too low Warm Up Drying Temperature Offset Temperature the media at the print zone must reach before start printing Bleeding or coalescence may appear in the first 200 300 mm of the plot Warm Up Curing Temperature Offset Temperature that the media at the curing zone must reach before start printing Beginning of plot not fully dry or with oily appearance Cool Down Drying Temperature Offset Safe temperature at which the media can be under the dryer without being damaged At the end of a job the media is not stopped until this temperature is reached A long time is needed to finish the print Cool Down Curing Temperature Offset Safe temperature at which the media can be under the curing module without being damaged At the end of a job the media is not stopped until this temperature is reached A long time is needed to finish the print Minimum Drying Power Minimum power applied in the dryer while printing so the media does not cool too much in light inked areas A heavy inked area after a light one will have bleed or coalescence defects DI
3. 3 Media Loading and RIP media profile cscccsccssccesccesccescreseee Recommended Print MOSS ao ine oe yee E E EE E a 8 Print mode PUTS TEE o ce ae unies ap aaa a ine ena EiS 9 4 Optimize media settings cccccccsccsccccccccecccsccsccecceccssccsccesees TO Recommended default substrate settings 10 Main printer settings nena 10 Advanced printer SENO ea opo aa vd ae a aa AE ae 12 5 Image Quality Troubleshooting ccccsccsccsccsccecccsccsccsccescesees 14 Substrate Janis Or Ink SMEOTS dne ele panike aka aaa 14 Checking the ink quantity on the subslrate caresianerajas VAR ko ak la krap 16 ee A A NE a AO RO AN 17 Graininess or coalescence on dark or saturated colors 18 Vet cal Bonsai io a oe bed ln ji ole o o klek bnih 19 Horizontal band Sree ie obe ei ele Abe oa PAN a tonsa 20 Color Registration ra Oni a da aa je ei de kola ed omela ke oko 21 Sharpness A A O A A A ro ME O OEEO O ER O RIO RR Ta 21 Black areas look hazy or image gloss is not completely uniform 22 Stains or uneven finishing of IMage si sa iii ke aii dlan ek ae ke 22 6 How to print at faster speeds eeeenenenoneoonnnoenooenosenosee 23 7 Summary for most common substrate problems 24 Hewlett Packard 2 DI HP Designjet L25500 printer series Add New Substrate and Image Ouality Troubleshooting faven
4. Maintenance In this plot locate the position of the lightest band and introduce the value in the RIP For printmodes of 6 passes or less it is unlikely that a Substrate Advance problem creates graininess See horizontal bands section for more details Printmodes of 8 passes and less tend lf previous solutions have not to have more graininess ae enough ine graininess level use a printmode of 10 passes or more Hewlett Packard 18 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting CA invent Vertical Bands Cause Solutions Vertical straight bands of different color and sometimes or different graininess appear on the image A If problem appears along the whole image drying temperature and or airflow may be too high for that substrate If problem appears only in the first 200mm of the image the initial portion of the image has been affected by the Curing process of the previous plot That may change substrate shape which results on Vertical Bands Reduce airflow in 15 steps down to 30 minimum If the problem disappears but then there is bleed coalescence or not enough durability this media will require to be used with a higher number of passes or with lower ink quantity Disable cutter Set the Extra Bottom Margin Front Panel gt Substrate menu gt Substrate Handling Options to 100mm If this solution does not work try again with the Extr
5. changing the Substrate Advance Compensation parameter through the on the fly button the Front Panel it is the same button used to Move Substrate when printer is idle f plot shows dark lines then increase the Substrate Advance Compensation factor f plot shows light lines then decrease the Substrate Advance Compensation factor When done store the value in the RIP For printmodes of 8 passes or more it is unlikely that a Substrate Advance problem creates bands See graininess section for more details Could be a fiber attached to any of the printheads Remove printheads and remove any fiber attached to them If bands affect on y some colors the cause could be a defective printhead Step1 Print the Nozzle Health Check plot Check if any of the printheads have a significant number of missing nozzles If so perform a Clean PHs procedure on the affected printhead After doing so reprint your used plot to see if Hewlett Packard 20 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting z invent the banding problem persists Step 2 If the problem persists repeat step 1 Step 3 If the problem persists try performing the Manual Printheads Alignment procedure When done print your user plot Step 4 If the problem still persists then print the Nozzle Health Check plot Identify the pri
6. following solutions in order Disable cutter This allows better substrate control at begin of plot If problem persists set the Extra BottomMargin Front Panel menu gt Substrate menu gt Substrate Handling Options to 100mm If this solution does not work try again with the Extra Bottom Margin set to 200mm This extra margin will apply only to jobs that start printing when printer is idle and when the cutter is disabled The initial portion of the image has been affected by a Warm up Drying temperature too high Decrease the Warm Up Drying temperature in 5 C steps until 0 If media has excessive curling bubbles burnt appearance not allowing you to laminate it or hung it perfectly flat Decrease the Curing temperature in 5 C steps until curling disappears If problem is not solved with previous solution or there are durability problems Increase the number of passes Hewlett Packard 15 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting CA invent Checking the ink guantity on the substrate Check if the ink guantities in your profile are adeguate Too much ink guantity The patch shows one or more of the following problems Solution Lower the ink guantity using Lower the ink guantities using your RIP consult your RIP documentation for doing so User a substrate profile which uses less ink For example Self adhe
7. properties such as thickness or stiffness which may benefit from calibration Abnormal but stable environmental conditions if you are printing in unusual conditions of temperature or humidity and those conditions are expected to remain stable recalibration may be worthwhile Input Tension Tension is applied to the media through its input roll It needs to be constant on the full width the substrate thus substrate load is a critical operation The substrate skews and may become increasingly wrinkled in the printing zone Also substrate advance may be irregular resulting in horizontal bands Vacuum Level The vacuum applied to the substrate at the printing zone helps to hold the substrate down on the print platen keeping the distance to the printheads constant The substrate can lift up off the platen and touch the printheads This can smear the printed image cause a substrate jam or even damage the printheads Advanced printer settings DI invent There are also some advanced parameters for further optimization The next ones shouldn t be changed unless you have reached to this point following troubleshoot substrate issues Remember that you can return any time to the defaults using a reset to defaults feature in the RIP in case you chose wrong settings Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting
8. a Bottom Margin set to 200mm This extra margin will apply only to jobs that start printing when printer is idle and when the cutter is disabled Decrease Warm Up Drying temperature in steps of 5 C If problem appears only in the first 100mm of the image and lines are S shaped Decrease Cool down Curing temperature in 5 degrees step since it affects the next plot behavior or Set in you RIP the Top margin to 50mm If problem appears only after a low to high density area fill transition the initial portion of the area fill has been affected by the previous white area fill That may change substrate temperature profile which results on Vertical Bands Increase Minimum drying power in 0 2 steps in RIP advanced settings Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting CA invent Horizontal bands Cause Solutions There are horizontal bands or lines across the plot width If bands affect most of the colors the printheads could be misaligned This is probable if you performed Printheads Alignment on another substrate or there has been a substrate jam Perform Printheads Alignment Another cause for this problem could be a Substrate Advance problem This applies only to printmodes of 6 passes and less For printmodes of 6 passes or less When unit is printing try to reduce Horizontal Bands by
9. ality defects such as coalescence and banding may occur especially at the sides of the plot However printing speed is relatively high This is the most suitable setting for tiling applications High Ink Limit Normal if unchecked High if checked Maximum quantity of ink that will be laid on paper high ink limit option only available when number of passes is 12 or larger The ink quantity is further reduced by the RIP color profile TIP Use normal ink limit for substrates such as PVC Scrim Banner Frontlit Green Banner Vinyl Calendared Vinyl Cast Blue back and Scrim banner Hewlett Packard DI invent HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting 4 OPTIMIZE MEDIA SETTINGS HP and third party media profiles have their own substrate settings which will have been optimized to maximize the printer performance in terms of image quality and printing speed You might need however use other substrate settings for your specific substrate so here are the recommended defaults for a generic substrate to use as start for your add new substrate process Your RIP might have an option to set your RIP settings to these defaults so that you don t have to change each one manually consult your RIP documentation Moreover you can consult several substrates settings in http www hp com go L25500 solutions Recommended default substra
10. ckard 24 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting DI invent Drying Increase Substrate jam ink smears temperature damaged media Number of passes Increase Printing speed loss Curing Decrease Durability loss smudge or temperature oily plot finishing Hewlett Packard 25
11. ear in mind that o 8 pass printing may have more graininess than 10 passes and beyond o and 6 pass printing is more sensitive to Substrate Advance problems o 4and 6 pass printing may provide better results if the ink quantity is reduced in the RIP o Lower passes print modes 4 6 might need lower ink usage than higher number of passes for ink to properly get dried and durability A generic guideline to start from is Ink reduction percentage vs ink quantity used in 8 passes 30 4 passes 50 o High Ink Limit printing is available only for 12 passes or more o Decreasing passes may make it more difficult to find appropriate Curing temperature setting or may make them more sensitive to ambient temperature and humidity conditions e Take advantage of the concatenated plots feature If a plot is sent while the previous one is being printed they are concatenated so that finishing time is saved e Disable the cutter In most substrates this speeds up the Finishing Print stage e Increase the Cool Down Curing temperatures This stops image finishing procedure when the printer is still warm Some substrates may experience a slight deformation near the end of the printed image Hewlett Packard 23 LA invent HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting 7 SUMMARY FOR MOST COMMON SUBSTRATE PROBLEMS Here is the table of likely problems and the RIP parameters that sh
12. es or hours after having k many times as needed printed the plot Do not store plots with printed faces touching each other Use the Take Up Reel Increase the Warm Up Curing temperature in 5 C steps as many times as needed If problem is not solved with previous solution because media gets damaged or because you reach the limit in the RIP control then increase the number of passes any The Curing procedure was done at a temperature that was too low Hewlett Packard 17 CI HP Designjet L25500 printer series Add New Substrate and Image Ouality Troubleshooting Ka 2 t Graininess or coalescence on dark or saturated colors Cause Solutions Grain or ink If graininess problem is more visible a ee coalescence appears in in dark or saturated colors it may be eau aan different areas of the an ink coalescence problem ae pe through the RIP controls plot Grain appears in The Printheads could be misaligned Perform PH alignment different areas of the This is probable if you performed plot Printheads Alignment on another substrate or there has been a substrate jam The substrate may not be advancing for printmodes of 8 or more properly This applies only to passes printmodes of 8 or more passes Adjust the Substrate Advance Compensation parameter by nm printing the Substrate Advance plot Front Panel gt Ink gt Ink Quality
13. g Print quality defects Airflow the evaporated water such as banding from the print zone and bleeding and thus allows more efficient coalescence may drying conditions occur Automatic OMAS is an automatic Disable OMAS when tracking ee device calec y the substrate is porous OMAS tracks the substrate ana aler n to na eene provide trespass to the platen k Clean OMAS after optimum advance h using this media accuracy you are instructed by the front panel after substrate load or after a job as OMAS is either dirty or it can not track this particular media Cutter The internal substrate disable the cutter in enabled cutter of the printer cuts case ee after every eelo Reel iz mah used the substrate will be cut with an external device the leading edge of the substrate is too curly and produces media crashes Substrate Your printer was Dark lines appear Advance calibrated at the factory to when number of g ensure that it advances passes is 6 or below Compensation the media accurately Graininess appears when using when number of supported media types in PAS S 8 and above normal environmental conditions However you may find it useful to recalibrate in certain Hewlett Packard 11 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting circumstances Unsupported media different media manufacturers provide media with a wide range of
14. n the spindle so it is centered in the print zone 3 Disconnect OMAS in the RIP if substrate is transparent or dark or if the printer recommends you to do so during the substrate load operation gi o Launch Printheads Alignment In your RIP software open the HP diagnostic chart which you can obtain from the Embedded Web Server at Hewlett Packard DI invent HP Designjet L25500 printer series Add New Substrate and Image Ouality Troubleshooting http ip addr hp device webAccess images new tit where ip addr is the IP address of your printer Alternatively you can find the chart on the Web under http www hp com go 125500 manuals 6 Select the number of passes recommended in the print mode recommendation matrix for the family or Printer Media Profile These are generic proposals that works with most of the substrates available Recommended Print Modes Unidirectional Self Adhesive Banned HP Paneer Somant Paper Bidirectional Vinyl Photorealistic P agueous Ink Limit Setting in RIP 4 pass Bidir 250 oja Image Ouality Faster a Recommended setting to start with Other recommended settings Setting where the unit might operate with sellable Image Quality Non recommended setting Image Quality could be low or not stable across temperature and humitidy conditions NOTE More specific settings for several substrates from different vendors is available in http ww
15. ng to allow their use in solvent printers Also they usually have a limited water resistant performance Example HP Blue Back Billboard Paper Intellicoat GPIOF140 blue back medias Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting CA invent Substrate Family or Printer Media Description Profile Paper based cellulose media with or without coating The main difference with Paper the billboards is that offset papers are not compatible with solvent printers Aqueous Weight usually around the 100gsm Usually a polyester mesh covered with PVC coating with holes Some of these Mesh media types can have a liner and be self adhesive Example HP Mesh Banner with liner Ultraflex Stripmesh Fabric medias are usually composed of polyester fibers Some of the fabric media types come with a liner to avoid the ink trespassing Fabric the media Fabric materials which are very stiff such as polyester canvases are preferably loaded as banner Example HP Wrinkle free Flag with liner Usually a polyester film although there are other materials like PVC PC for backlit applications They are typically translucent although there are transparent Film versions Example Intelicoat SBL 7 Polyester Backlit Film 2 Load the media If media is smaller than machine width it s better to locate the media to the leftmost position i
16. nthead with more missing nozzles and replace it If bands affect mostly dark or Use a higher number of passes If bands affect mostly black colors the cause could be a sub optimal generation of the color profile for K saturated colors or affects only area fills near the edges of the substrate the cause could be insufficient drying of the ink Color Registration Color planes are shifted in any direction Generate the color profile using pure K or K with little under printing of other colors See your RIP User Manual for more details Cause Solutions The printheads could be misaligned This is probable if you performed Printheads Alignment on another A substrate or there has been a la substrate jam Perform troubleshooting process of Printheads Alignment and print Printheads Alignment diagnostic plot Sharpness Text lines or solid areas are rough or blurred Hewlett Packard 21 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting DI invent Cause Solutions la The Printheads could be misaligned This a probable if you have not done a printheads alignment for a long time or there has been a substrate jam Perform troubleshooting process of PH alignment and print PH alignment diagnostic plot Black areas look hazy or image gloss is not completely uniform Black area fills don
17. o the family of yours E g if you want to use a vinyl from a vendor A you could start from a vinyl from vendor B RIP media profile The following table may help when selecting the right family or printer media profile Substrate Family or Printer Media Profile Description Self Adhesive Vinyl PVC films with adhesive on one side There can be white finished or transparent The liner can be paper or plastic based There are 2 main manufacturing processes calendering and casting Also there are varieties such as perforated vinyl to be placed on windows For those substrates Manual Printheads Alignment may need to be used instead of the Automatic one Example HP Air Release Adhesive Gloss Cast Vinyl Avery MPI3000 calendered Avery MPI1005 cast 3M IJ 380 cast Banner Usually a polyester mesh or fabric covered with PVC coating There are also recyclable types to cover the same applications green banners Banners can be frontlit or backlit Example HP Durable Frontlit Scrim Banner Ultraflex Normandy Pro Verseidag banners HP Photorealistic Paper based cellulose media with coating gloss and matte finishing It has a weight higher than the other billboard and offset medias 200gsm or higher The main difference is its rigidity compared to the other billboard medias Example HP Photo realistic Poster Paper Paper Solvent Paper based cellulose medias with coati
18. ould be changed in order they should be tried to solve the issue There is also which could be the potential side effect which doesn t necessary show up Issue Parameter Increase Potential side effect Decrease T Curing Increase Substrate jam ink smears sle i pralen lis temperature damaged media smudges or with an oily finishing Number of passes Increase Printing speed loss Curing Decrease Durability loss smudge or temperature oily plot finishing Vacuum change Increase Substrate skew and Disable cutter Substrate jam ink smears damaged Top and or bottom Increase Substrate waste media margins Drying Decrease Image quality more temperature coalescence and or banding Durability loss smudge or oily plot finishing Drying Increase Substrate jam ink smears Horizontal and or thin temperature damaged media vertical bands 2mm in TF highly saturated area Ink limits Decrease Color gamut loss fills Graininess or coalescence on dark or saturated colors depends on RIP Number of passes Increase Printing speed loss Airflow Increase 15 Run print printhead alignment Graininess Color mis Peno registration or lack of A EN sharpness g process of substrate advance calibration Modify color separations and Black areas look hazy black color or image gloss is not generation completely uniform resources Airflow Increase 15 Hewlett Pa
19. sive profiles use more ink than Paper aqueous ones Too little ink quantity The whole plot looks washed out Solutions Lower ink quantity consult your RIP documentation for doing so Try another profile which uses more ink For example Self adhesive profiles use more ink than Paper aqueous NOTE Backlit substrates usually require to be used with the High Ink Limit option enabled in the RIP The last two or three scales of the plot look the same Vertical bands Coalescence grain Hewlett Packard CA invent HP Designjet L25500 printer series Add New Substrate and Image Ouality Troubleshooting Correct ink guantity The last scales of the plot The patch has no defects and Increasing amounts of ink result on increasing color density Ink smudge issues Ink Smudge when touched or image has an oily finishing Cause Solutions Increase the curing temperature in 5 C steps as many times as needed If problem is not solved with previous solution because The Curing procedure was done at a temperature that was too low If the oily finishing appears some hy minutes or hours after having pace gets pn Ni NA printed the plot ecause you reach t G imit in the RIP control then increase the number of passes PEE l th i If the oily finishing appears some Tes fne curing temperature in 5 C steps as minut
20. t 1 SUMMARY This section describes the procedure to bring a new Substrate into operation with the printer Obviously if the RIP media profile for the substrate is already available see the RIP and the substrate manufacturer web pages then the procedure can be skipped Once the Add New Substrate procedure is completed the number of passes of the printmode can usually be changed without need for any extra action See HOW TO PRINT AT FASTER SPEEDS section Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting The Add New Substrate procedure consists on the following steps Load media it s advisable to align printheads See section Align printheads in Maintenance and troubleshooting guide Create and name a new substrate profile in RIP 1 Choose the substrate family to start from substrate families table in MEDIA LOADING AND RIP MEDIA PROFILE chapter 2 Create a copy or use the substrate family 3 Select a name for the new substrate in case you create a copy Select the initial print mode from Recommended Print Modes table in MEDIA LOADING AND RIP MEDIA PROFILE chapter v Print the diagnostic plot available in hitp ip addr hp device webAccess images new tif _ Substrate jams or ink Yes EF dl No v Check ink quantity in the printed plot using the section Checking the ink guantit
21. t look totally black or look hazy Cause Solutions Better drying may benefit the Optical Density and appearance of black areas Use a higher number of passes Lamination would level the image glossiness laminate the printed image Stains or uneven finishing of image Area fills show subtle stains or an uneven appearance Cause Solutions CE Subtle color differences may appear in some medias if storage after printing is done with objects partially covering the printout Affected substrates should be stored right after printing either totally covered or totally uncovered For covered storage right after printing it may be advisable to avoid the prolonged contact of two printed faces Those problems tend to disappear once the media is left uncovered for some time Media coating has a defect Use another roll of the same media Hewlett Packard 22 DI invent HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting 6 HOW TO PRINT AT FASTER SPEEDS The Add New Substrate procedure describes a way to setup printing which results on sellable indoor Image Quality for the majority available substrates However most substrates support faster printing while providing enough Image Quality for many applications This section describes tips to speed up printing e Decrease the number of passes If you do so b
22. ta HP Designjet L25500 series Add New Substrate and Image Quality Troubleshooting procedures Version 1 0 DI invent HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting Copyright 2009 Hewlett Packard Development Company L P All rights are reserved No part of the document may be photocopied reproduced or translated to another language without the prior written consent of the Hewlett Packard Company Notice The information contained in this document is subject to change without notice and should not be construed as a commitment by the Hewlett Packard Company Hewlett Packard assumes no responsibility for any errors that may appear in this document nor does it make expressed or implied warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose The Hewlett Packard Company shall not be liable for incidental or consequential damages in connection with or arising out of the furnishing performance or use of this document and the program material that it describes Trademarks Microsoft and Windows are U S registered trademarks of Microsoft Corporation DI invent HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting TABLE OF CONTENTS 1 SUMMOTY ELI I E E T E 2 Color calibration of a printer and color profiling of a substrate 5
23. te settings Main Printer settings Drying Curing Heating Automiati Cutter ao Input Vacuum tracking advance Ni OMAS enable rah jensalien Tension level Banner 50 110 45 Yes Disabled 0 15 Self Adhesive 55 110 45 Yes Enabled 15 25 Fabric 55 100 45 Yes Disabled 15 20 Paper Solvent 50 90 30 Yes Enabled 15 15 HP Photorealistic 50 90 30 Yes Enabled 15 40 50 95 30 Yes Enabled 15 15 55 95 60 Yes Enabled 15 20 Paper Aqueous 45 70 30 Yes Enabled V 20 Substrate family Temperature Temp AirFlow Main printer settings Setting Explanation If too low Drying The heat applied in the Print quality defects temperature printing zone removes such as bands water and fixes the image bleeding and to the substrate coalescence may occur Curing Curing is needed to The print may emerge temperature coalesce the latex not fully polymerized creating a polymeric film so that the ink smears which acts as a protective when rubbed with the layer while at the same finger In some other time removing the cases the print may remaining co solvents appear wet or get a from the print Curing is wet appearance some vital to ensure the time after printing durability of the printed You might need a Hewlett Packard 10 DI invent HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting images higher number of passes to get the print fully dried Heating Airflow helps removin
24. w hp com go L25500 solutions If your are using HP Designjet 9000 10000 recommend following printmode with the following printmode with 4 pass bidirectional 360x720 i 4 pass bidirectional 720x720 6 pass bidir 6 pass bidirectional 720x540 8 pass bidirectional 720x720 10 pass bidir 8 pass bidirectional 720x720 i 16 pass bidirectional 720x720 16 pass bidir 16 pass bidirectional 720x720 16 pass bidir 7 Print the file Hewlett Packard 8 HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting DI invent Print mode parameters Setting Explanation If too low Number of passes The number of passes specifies how many times the printheads will print over the same area of substrate The amount of ink fired per time unit is larger and ink has less time to dry on the substrate This may create coalescence and banding Because larger substrate advances are required and ink has to be placed faster on the substrate the boundaries between passes are more visible However printing speed is relatively high If number of passes lt 12 the High Ink Limit setting is not available Print direction bidirectional if checked or unidirectional if unchecked Specifies if printheads can print both when moving left to right and when moving right to left When set to bidi the amount of ink fired per time unit is larger and therefore print qu
25. y on the substrate o Yes m Excess of ink in plot 5 ie No _sthe plot wet or ih Yes Proceed to section IMAGE OUALITY TROUBLESHOOTING Proceed to section Checking the ink guantity on the substrate smudge S j No x Yes Proceed to section IMAGE QUALITY TROUBLESHOOTING Ink smudge issues b d re there other image guality problems No l Do em Yes Proceed to section IMAGE OUALITY TROUBLESHOOTING look for others problems a faster pe a No o you want to color Yes profile and or calibrate your substrate v No v Process completed Proceed to section HOW TO PRINT AT FASTER SPEEDS Proceed to section Printer calibration subsections color calibration and color profiles in Maintenance and troubleshooting guide DI invent Hewlett Packard DI HP Designjet L25500 printer series Add New Substrate and Image Ouality Troubleshooting favent 2 COLOR CALIBRATION OF A PRINTER AND COLOR PROFILING OF A SUBSTRATE Printer can be already used with the color profile you have used to follow the Add New Substrate procedure However depending on your reguirements on color accuracy you may want to do the following operations Color calibrate printer This operation measures the current color performance of
26. your printer and brings it to known stable point This is useful if you need color consistency along the time even if you change ink cartridges or printheads The procedure is to be repeated whenever the ambient conditions change significantly or when changing any printhead See your RIP manual for details on how to launch the calibration Color profile your substrate If the color profile you are using corresponds to a substrate different than the one in your printer then the colors may not be completely accurate If this is a problem you can proceed to color profile your substrate using the RIP regular process Consult your RIP documentation for more details Hewlett Packard HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting DI invent 3 MEDIA LOADING AND RIP MEDIA PROFILE 1 Check if your substrate is available from your RIP web site or from your substrate vendor If not available you have three options a Check your substrate profile availability in http www hp com qo L25500 solutions b Create a RIP media profile departing from a parent RIP media profile whose family or printer media profile is the same or close to that of your substrate E g if you want to use a vinyl from a vendor A you could start from a generic vinyl RIP media profile Reuse any other RIP media profile from a substrate whose family or printer media profile is the same or close t
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