9. Inkjet Imaging - Epson Piezo Head
DAVID PACHON ¨C PRINTLAT
9 www.PrintLat.com
10. Inkjet Imaging
What about resolution?
DAVID PACHON ¨C PRINTLAT
10 www.PrintLat.com
11. Inkjet Imaging
Printer resolution
? The measurement unit for resolution is dpi
¨C dpi = dots per inch
¨C dpi = points per 25.4 mm
¨C 300 dpi = 11.8 points per mm
¨C 2400 dpi ? 95 points per mm
DAVID PACHON ¨C PRINTLAT
11 www.PrintLat.com
12. Inkjet Imaging
Printer resolution
length of the edges = distance diameter = distance
in combination with a quadrate in combination with circle
D
A
The fact that white area rests between the circles needs an enlargement of
the printed point
It follows theoretically D = 1,4 x A
DAVID PACHON ¨C PRINTLAT
12 www.PrintLat.com
13. Inkjet Imaging
Printer resolution
Printer resolution, like 2400 x 1200dpi
Defines only the number of dots per square inch
Doesn?t define the diameter of the printed point
The following slide will show this fact.
DAVID PACHON ¨C PRINTLAT
13 www.PrintLat.com
14. Inkjet Imaging
What about ink?
DAVID PACHON ¨C PRINTLAT
14 www.PrintLat.com
15. Inkjet Imaging
There are two basic types of Ink . . .
? Dye based Ink ? Pigmented Ink
+ like sugar or salt in water + like clay in water
+ colorant (dye) is dissolved + many molecules of colorant in
at the molecular level each pigment particle
+ high saturation + high UV and oxidation stability,
¨C low UV and Ozone stability as molecular bonds not as easily
dye molecular bonds are broken
broken by these effects ¨C danger of settling down
¨C today slightly lower colour
saturation than dye ink
=> Indoor (several month up to
years) => Outdoor (>3year) and Indoor
(>25 year)
DAVID PACHON ¨C PRINTLAT
15 www.PrintLat.com
16. 6 month ozone influence at standard office condition during summer
Canon S900 photo printer with dye ink
Protected with a clear PET film Without protection
DAVID PACHON ¨C PRINTLAT
16 www.PrintLat.com
24. Factors for Ink Jet Print Quality
? Printing head ? Media Substrate
? technology, resolution ? type, surface, optical
? Printing mode ? Coating
? colour
? printer, ink lay down
? gloss
? Calibration (RIP) and Colour profiling
? ink capacity
? Inks
? ink absorption speed
? density, viscosity, surface tension
? dot gain
? stability ? adhesion
? Conditions ? resistance against scratching
? temperature, humidity, air flow
DAVID PACHON ¨C PRINTLAT
24 www.PrintLat.com
25. Ink Jet Media Characterization
? Test Print
? Colour Measurement
? Dot Size Measurement
? Electron Microscopy
? Dynamic Ink Absorption
? Lamination compatibility
? Accelerated UV Exposure
? Physical Properties
? Printer related Reliability => Feeding, cutting, etc.
DAVID PACHON ¨C PRINTLAT
25 www.PrintLat.com
26. Ink Jet Media Characterization
Test Print
? Colour Gamut
? Gradation
? Inter Colour Bleeding
? Line Sharpness
? Small Characters
? Coalescence
? Banding
? Drying time
? Water Resistance
? UV Resistance
? Lamination compatibility
DAVID PACHON ¨C PRINTLAT
26 www.PrintLat.com
27. Lamination Compatibility
hot - cold lamination
printed and unprinted areas
1. adhesion
coating to base material
lamination film to coating
2. Cohesion
paper base, coating
DAVID PACHON ¨C PRINTLAT
27 www.PrintLat.com
33. Inkjet Films - Backlit Film / Window Graphic
DAVID PACHON ¨C PRINTLAT
33 www.PrintLat.com
34. Inkjet Films
Pasos para Imprimir en Serigraf¨ªa - Screen
1.Prepare su dise?o, Separe su dise?o 2.Adjuntar el Positivo a un bastidor con 3.Exponga el bastidor a luz ultra
por color, e imprima cada color en un emulsi¨®n. Se debe preparar un violeta para transferir el dise?o del
positivo independiente. Cada Color bastidor por cada positivo al bastidor llamado ¡°screen¡±
representa un color por separado y
necesita su bastidor independiente
4.Lave las ¨¢reas no expuestas con 6.Agregue tinta al bastidor, cada color
agua es aplicado de forma independiente
DAVID PACHON ¨C PRINTLAT
34 www.PrintLat.com
36. Inkjet Imaging Papers - Product Range TriSolv.
After print processing, billboard application
After wetting the folded poster in water (up to 15 minutes)
the spare water will be wiped off. This wet folded paper keeps
in a plastic bag for one day up to three days.
DAVID PACHON ¨C PRINTLAT
36 www.PrintLat.com
37. Inkjet Imaging Papers - Product Range TriSolv.
After print processing, billboard application
8 hours
up to
three
days
Apply glue to the billboard, paste the wet TriSolv paper onto the billboard and then
wipe again with the glue over the paper.
Nearly 85% of all billboard posters are mounted by this procedure (international
standard). The glue is standardized in most countries.
The TriSolv Paper family is qualified by billboard companies for this kind of
application.
DAVID PACHON ¨C PRINTLAT
37 www.PrintLat.com
38. Thank you for your attention!
David.pachon@sihlusa.com
DAVID PACHON ¨C PRINTLAT
38 www.PrintLat.com