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open your EYES to MORE labelling SOLUTIONS - Avery Dennison ...

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Number of printers in Millions<br />

2. The printing processes<br />

Inkjet printing with Fasson<br />

self-adhesive roll labels<strong>to</strong>ck.<br />

Self-adhesive materials for inkjet<br />

printing are increasing in demand,<br />

and are currently exhibiting a doubledigit<br />

growth rate – a direct result of<br />

the success of the A4 ‘desk<strong>to</strong>p’ inkjet<br />

printers. These printers dominate<br />

the small offi ce market due <strong>to</strong> the<br />

simplicity of operation and the<br />

relatively low printer costs.<br />

The inkjet printing process.<br />

Inkjet printing delivers droplets of ink<br />

from a nozzle directly on<strong>to</strong> a receiver.<br />

Two types are available: continuous<br />

inkjet (mainly used for direct<br />

marketing) and drop-on-demand<br />

(where a label is generally required).<br />

Drop-on-demand printing can be<br />

achieved by two different processes<br />

- thermal inkjet and piezo inkjet.<br />

Thermal inkjet is <strong>to</strong>day’s most<br />

common technology, used in 90% of<br />

Printers installed in Western Europe<br />

Monochrome Laser<br />

Colour Inkjet<br />

Monochrome Inkjet<br />

Desk<strong>to</strong>p Colour Laser<br />

Colour Laser Copier/Printer<br />

desk<strong>to</strong>p inkjet printers because of<br />

the relatively low printhead cost. This<br />

process forms a bubble of ink, heated<br />

through electrical pulses.<br />

Piezo inkjet is challenging this<br />

technology with the advantage of<br />

greater dot control in terms of both<br />

sizes and speed due <strong>to</strong> the technique<br />

of dot formation.<br />

The printhead is fi tted with a piezo<br />

crystal, which deforms with electrical<br />

impulse and creates and displaces<br />

the bubble of ink. Due <strong>to</strong> the accuracy<br />

of dot formation with this process, it<br />

is possible <strong>to</strong> create pho<strong>to</strong> images of<br />

1200x1200 DPI - though printhead<br />

costs are higher. Both processes<br />

require a specially formulated <strong>to</strong>p<br />

coating <strong>to</strong> optimise colour print<br />

receptivity, and for bar code printing.<br />

Laser and copier printing<br />

with Fasson self-adhesive roll<br />

labels<strong>to</strong>ck. Driven by the increased<br />

sales of desk<strong>to</strong>p printers for both the<br />

home and the offi ce environments,<br />

the laser copier market is one of<br />

the fastest-growing segment in the<br />

variable information printing market.<br />

The technology’s ability <strong>to</strong> produce<br />

high resolution and durable images<br />

at high print speeds has also created<br />

growth in industrial markets.<br />

Typical applications include address<br />

labels, pallet labels, pharmaceutical<br />

labels and component labels in the<br />

electrical and au<strong>to</strong>motive industries.<br />

The laser and copier printing<br />

process. The electropho<strong>to</strong>graphic<br />

(<strong>to</strong>ner transfer) processes include<br />

laser copiers and pho<strong>to</strong> copiers (LED),<br />

which operate by similar principles: an<br />

image is scanned by a light beam or<br />

high-speed fl ash and refl ected on<strong>to</strong> a<br />

pho<strong>to</strong>conduc<strong>to</strong>r drum, which creates<br />

a charge.<br />

Laser printers differ from pho<strong>to</strong>copiers<br />

in that the image is sent digitally <strong>to</strong><br />

the pho<strong>to</strong>conduc<strong>to</strong>r drum. In both,<br />

however, <strong>to</strong>ner particles are attracted<br />

<strong>to</strong> the drum and then transferred and<br />

fi xed on<strong>to</strong> the paper or fi lm receiver<br />

using heat and pressure.<br />

These are generally sheet-fed<br />

printing processes, which are very<br />

easy <strong>to</strong> use, but place high demands<br />

on the labels<strong>to</strong>ck <strong>to</strong> ensure clean<br />

and effi cient feed through the<br />

printers, which can have winding<br />

transportation paths.

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