Ink jet printing of textiles

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ink jet printing on textiles is explained for begginers and students who are new to this field

Text of Ink jet printing of textiles

  • 1. Ink Jet Printing of Textiles What you needWhat you need to know but wereto know but were afraid to ask !afraid to ask ! January 2014 1Dr. Sanjiv Kamat KITL
  • 2. Language has changedLanguage has changed LIFE WAS MUCH EASIER WHEN Apple AND BlackBerry WERE JUST FRUITSOctober 2013 2Dr. Sanjiv Kamat KITL
  • 3. And (Terms you would use in IJP)And (Terms you would use in IJP) NIPNIP Sip of Liquor or pinchSip of Liquor or pinch RIPRIP Rest In PeaceRest In Peace DODDOD Ball on which no run is scoredBall on which no run is scored PZTPZT Brother of R2D2, K9 of Star warsBrother of R2D2, K9 of Star wars pLpL Privilege LeavePrivilege Leave October 2013 3Dr. Sanjiv Kamat KITL
  • 4. The Digital AdvantageThe Digital Advantage Advantages No minimums On demand manufacturing Efficient sampling No repeat size No limit on colors No color kitchen No screen engraving No screen warehousing No limit on design size Flexible design possibilities Reduced waste Reduced manpower Environmentally Friendly Disappearing Disadvantages Speed Cost Replication of screen prints January 2014 4Dr. Sanjiv Kamat KITL
  • 5. Historical TimelineHistorical Timeline 1749 First research on ink jet in FranceFirst research on ink jet in France 1878 Rayleigh-Mechanism of liquid stream in dropletsRayleigh-Mechanism of liquid stream in droplets 1930 Ink jet for e recording deviceInk jet for e recording device 1951 Siemens Elema first commercial ink jet m/cSiemens Elema first commercial ink jet m/c 1967 Stork produces high colour images by ink jetStork produces high colour images by ink jet 1970 Piezo and thermal DOD, Printing of carpets, Milliken/ZimmerPiezo and thermal DOD, Printing of carpets, Milliken/Zimmer 1991 first commercial system at ITMA Hanoverfirst commercial system at ITMA Hanover 2000 Cannon developed high resolution Printer Encad Introduced Textile Printer/Iris Modified Mimakis Introduced Stork/Dupont /Yuhan Kimberly, Reggiani and Robustelli Machine January 2014 5Dr. Sanjiv Kamat KITL
  • 6. The Essential ElementsThe Essential Elements Print headPrint head Fabric Feed System/ PrinterFabric Feed System/ Printer InkInk FabricFabric SoftwareSoftware Pre/post treatmentPre/post treatment January 2014 6Dr. Sanjiv Kamat KITL
  • 7. Understanding the technology involvedUnderstanding the technology involved Courtesy: Dr John Provost January 2014 7Dr. Sanjiv Kamat KITL
  • 8. Thermal Drop on Demand(DOD) Piezo Drop on Demand Binary Continuous inkjet heads Multi-deflection continuous heads Air jet deflection Printhead TechnologyPrinthead Technology January 2014 8Dr. Sanjiv Kamat KITL
  • 9. January 2014 9Dr. Sanjiv Kamat KITLInk jet Technologies- A Summary Continuous (CIJ) = continuous flow of ink Method to produce drops Method to select drops Method to recover and control the ink High speed capability Typically low resolution, but high resolution capable Drop On Demand (DOD) = drop of ink only generated when needed No drop selection or deflection required Each nozzle fires only as required nozzles can be inactive Nozzle maintenance and good ink formulation required Actuation mechanism required with enough energy to generate drop at required velocity to eject and reach substrate successfully Actuation methods most common are thermal and piezo Piezo dominant technology in textile printers
  • 10. Most common is lead zirconium titanate(PZT) ceramic Electrical pulse causes the material to Push Bend Shear Piezo Print headPiezo Print head January 2014 10Dr. Sanjiv Kamat KITL
  • 11. January 2014 11Dr. Sanjiv Kamat KITL Piezoelectric ceramic material deforms when voltage is applied Distortion creates a pressure pulse in the ink chamber Causes a drop to be ejected from the nozzle Many different modes shear, bend, push, edge = different configurations of the piezo material and the nozzle Piezo functioning
  • 12. January 2014 12Dr. Sanjiv Kamat KITLWhy Piezo drop on demand Robust technology for broad range of industrial applications Proven in production Adaptable configurations to provide higher speeds and print quality Consistent drop velocity and drop volume Wide range of ink capability Enables wide range of applications High accuracy jetting Long life printheads Capable of high duty production High reliability (subject to correct use)
  • 13. January 2014 13Dr. Sanjiv Kamat KITL Binary One drop size On or off Multi-pulse binary Special mode offered by some printheads Ability to create larger drops (all same size) Greyscale Variable number of drops Drops coalesce in flight or at nozzle plate Directly vary drop volume Vary waveform according to drop size required Apply different waveforms to each bank of piezo
  • 14. January 2014 14Dr. Sanjiv Kamat KITLGreyscale Printing
  • 15. January 2014 15Dr. Sanjiv Kamat KITLResolution In digital photography it is the number of dots per inch(pixels). Higher resolution gives higher quality. In digital printing, printhead resolution is fixed value, given by the number of nozzles per inch. Higher number of nozzles per inch gives higher quality
  • 16. January 2014 16Dr. Sanjiv Kamat KITL Quality is driven by the printing head native resolution (The higher ,the better) Quality depends on the drop-size (The smaller the better.) Quality is strictly related to the landing precision (Accuracy angle in landing) Resolution and Quality
  • 17. January 2014 17Dr. Sanjiv Kamat KITLResolution and Firing Frequency Frequency is the number of drops ejected per second A Firing frequency is 20.000 Hertz means that each nozzle can jet 20,000 drops per second Higher the space between drops in the scan direction gives less ink per inch, which means more speed.
  • 18. January 2014 18Dr. Sanjiv Kamat KITLInk Flow End shooter/single ended Ink flows into the channel and exits only through the nozzle Recirculating/through flow Ink flows continuously through the channel and exits the nozzle only when required
  • 19. Output speed Fabric penetration, image resolution Ink Chemistry Replacement cost and ink costs Reliability and Consistency Printhead Selection based onPrinthead Selection based on January 2014 19Dr. Sanjiv Kamat KITL
  • 20. Printhead TechnologyPrinthead Technology Kyocera KJ4 2656 nozzles Epson DX 7 1440 nozzles Konica Minolta 1024 Ricoh Epson Xaar Kyocera Spectra Konica Minolta Fuji Diamatix HP Scitex Sieco Printek January 2014 20Dr. Sanjiv Kamat KITL
  • 21. January 2014 21Dr. Sanjiv Kamat KITL The technology is breathtaking-The drops and the nozzles are tiny! A Kyocera KJ4B 30kHz printhead has 2,656 nozzles Each nozzle can jet up to 30,000 drops/sec That is potentially a total of 79,680,000 drops per second On a printer with 8 heads (one per colour) thats 637,440,000 drops/sec Taking care of your Printhead
  • 22. January 2014 22Dr. Sanjiv Kamat KITL Nozzle maintenance is essential features built into your printer as standard Manu