© 2011 Hewlett-Packard Development Company, L.P.The information contained herein is subject to change without notice

Ink and Media Troubleshooting logicOct 2011

By: Vadim Baliasny

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Ink & Media – Troubleshooting Main Principles

First question –

GENERIC or LOCAL ? Second question –

MACHINE, INK or MEDIA ?

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Ink & Media – Magic triangle

INK

MEDIA PRINTER

?

Magic triangleDual action problem

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Ink & Media – Troubleshooting logic

Four types of ink problems

Drying/curing

Media related (adhesion, flexibility, light fastness)

Quality (color gamut, overspray, banding, bleeding)

H/W related (clogging heads, filters)

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Drying/Curing Problem

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

Possible Reasons:

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Media related – Low Adhesion

Media related Use alternative media

Customer application requires higher adhesion lever Use alternative media Use coating/varnish/lamination

to protect ink layer

Ink is contaminated or damaged Check other batch of ink

Drying/curing is not sufficient See drying problem

Possible Reasons:

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Media related – UV Ink Low Flexibility

Ink limitation No solution for old ink versions. TJ210 and FB225 improved

dramatically ink adhesion and flexibility.

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

Possible Reasons:

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Media Related – light fastness – ink fading before 2 years

Media related Spec is related to

specific media only

Zone related Spec is related to

central European zone

Application related For 90º applications

only

Possible Reasons:

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Quality - Color Gamut Change

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.

Possible Reasons:

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Quality - Overspray

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

Clogged PH Replace PH

Slow ink supply – starvation Check ink flow interrupters Check another ink batch

Registration problem Readjust registration

Media is uneven or damaged Check another media

HW related. PH uniformity problem. Replace PH, adjust voltage

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Quality – Bleeding

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 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

Ink is out of spec, damaged or expired Check another ink bottle/batch

Ink system was exposed to heat, light, air Eliminate the source, seal possible areas

Ink was contaminated with damaged FF Use only 1L FF bottle and according to requirements. 1 year shelf life and

3 months after opening.

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

Where to find the new section Content

© 2011 Hewlett-Packard Development Company, L.P.The information contained herein is subject to change without notice

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