Ink and Media Troubleshooting logic Oct 2011 By

Ink & Media – Troubleshooting Main Principles § First question – GENERIC or LOCAL ? § Second question – MACHINE, INK or MEDIA ? Help Main Menu Back Forward

Ink & Media – Magic triangle §Dual action problem INK ? PRINTER MEDIA Help Main Menu Back Forward

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) Help Main Menu Back Forward

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 Help Main Menu Back Forward

Media related – Low Adhesion Possible Reasons: § 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 Help Main Menu Back Forward

Media related – UV Ink Low Flexibility Possible Reasons: § Ink limitation § No solution for old ink versions. TJ 210 and FB 225 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 Help Main Menu Back Forward

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 § Application related § For 90º applications only Help Main Menu Back Forward

Quality - Color Gamut Change Possible Reasons: § § 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. Help Main Menu Back Forward

Quality - Overspray § § § Site environment conditions (humidity, temperature) are not according to Site. Prep § 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 Help Main Menu Back Forward

Quality – Banding Color banding White 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 Help Main Menu Back Forward

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 Help Main Menu Back Forward

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 1 L 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 Help Main Menu Back Forward

New Ink and Media section in the Support Zone § § Where to find the new section Content Help Main Menu Back Forward