Transcript XP2700 course

Ink and Media Troubleshooting
logic
Oct 2011
By: Vadim Baliasny
© 2011 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice
Ink & Media – Troubleshooting Main Principles
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First question –
GENERIC or LOCAL ?
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Second question –
MACHINE, INK or MEDIA ?
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Ink & Media – Magic triangle
Magic triangle
Dual action problem
INK
?
PRINTER
MEDIA
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Ink & Media – Troubleshooting logic
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Four types of ink problems
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Drying/curing
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Media related (adhesion, flexibility, light fastness)
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Quality (color gamut, overspray, banding, bleeding)
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H/W related (clogging heads, filters)
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Drying/Curing Problem
Possible Reasons:
 Dryer/UV unit is broken
 Check if all heating elements/UV lamps are functioning
 Check shutter mechanism and UV lamp switching timing
 Drying/UV lamp is not sufficient
 Check temperature/UV radiation level and uniformity
 Clean UV lamp glass
Workaround: Use both UV lamps or higher temperature setup, use
slower print modes.
 Ink is contaminated or damaged
 Check other batch of ink
 Ink coverage is too high
 Check with application specialist ink percentage in dark areas of
the file. Reduce if needed. Recommended coverage is not more
than 280%
 Media related
 Use alternative media if all the above is checked and fixed
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Media related – Low Adhesion
Possible Reasons:

Media related
 Use alternative media
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Customer application requires higher adhesion lever
 Use alternative media
 Use coating/varnish/lamination
to protect ink layer
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Ink is contaminated or damaged
 Check other batch of ink

Drying/curing is not sufficient
 See drying problem
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Media related – UV Ink Low Flexibility
Possible Reasons:
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Ink limitation
 No solution for old ink versions. TJ210 and FB225 improved
dramatically ink adhesion and flexibility.
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Ink coverage is too high
 On file preparation stage reduce ink percentage to the minimum
possible level. Especially 4 color Black areas.
Workaround: for ink chipping on edges after cutting –
printing on pre cut media
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Media Related – light fastness – ink fading
before 2 years
Possible Reasons:

Media related
 Spec is related to
specific media only

Zone related
 Spec is related to
central European
zone
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Application related
 For 90º
applications only
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Quality - Color Gamut Change
Possible Reasons:
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Ink is out of spec, damaged or expired
 Check another ink bottle/batch
HW related
 Check possibility to light and dark ink mixing in the system
 Check ink supply system setup
Media is affecting by UV system
 Print blank file to see the differences. Check another media
Wrong color profiling
 Check profiles correctness. Check RIP setup. Create other new profiles.
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Quality - Overspray
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Site environment conditions (humidity, temperature) are
not according to SitePrep
 Inform customer and check if fixed
Static electricity
 Humidity is too low (see above). Clean media with
air gun/wet rug. Check another media.
PH distance to the media is too big
 Adjust to minimal
Ink is out of spec, damaged or expired
 Check another ink bottle/batch
HW related. PH are clogged, slow ink supply –
starvation, electronic noise, data noise
 Replace PH
 Check ink supply. Compare to other separations
 Replace driver/CCB board
 Check printing file
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Quality – Banding
Color banding
White banding
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Clogged PH
 Replace PH
Slow ink supply – starvation
 Check ink flow interrupters
 Check another ink batch
Registration problem
 Readjust registration
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Media is uneven or damaged
 Check another media
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HW related. PH uniformity problem.
 Replace PH, adjust voltage
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Quality – Bleeding
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Drying/curing is not sufficient
 See above
Media is not suitable
 Check another media
Gloss mode is too slow for
specific media
 Move to faster mode
Ink coverage is too high
 Check printing file and
reduce ink coverage –
see above
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HW damaging/clogging
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Ink system is not 100% compatible with the ink
 Limitation – follow maintenance procedure
 In case of ink jellying do not clean metal parts
but replace them
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Ink is out of spec, damaged or expired
 Check another ink bottle/batch
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Ink system was exposed to heat, light, air
 Eliminate the source, seal possible areas
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Ink was contaminated with damaged FF
 Use only 1L FF bottle and according to requirements. 1 year shelf
life and 3 months after opening.
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Ink was contaminated with dust, fibers etc. at customer site
 Demand from customer to provide appropriate cleanness and
maintenance level
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New Ink and Media section in the
Support Zone
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Where to find the new section
Content
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Thank You
© 2011 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice