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PRESTIGE LED 151
RECOMMENDED PRODUCTS
PRESTiGE 152
tornado PC LED 147
tornado PC 147
Printing
The appropriate illumination
of the space in the printing
industry plays a key role.
Good light conditions are the
basic assumption not only for
high-quality work but also
for safety during handling
with fast running printing
machines.
As a rule, the space in the printing
production is divided into
two parts. In the first part the
printing operations are carried
out, in the second one it is
the prepress and finalising the
printed material e.g. binding
and lithographical processes.
The standard EN 12464-1 states
the minimal illuminance level
500 lux for both spaces and
for typesetting, retouching
and litography it increases the
required value of the minimal
maintained illuminance to
1,000 lux, for the inspection
activities to 1,500 lux and
for copper engraving up to
2,000 lux.
The required illuminance
levels can be achieved by using
linear luminaires with the direct
characteristic of the luminous
flux distribution. In the printing
works with the height of
walls 6 metres and more the
suspended luminaires with the
wide luminous intensity curve
and metal-halide lamps are an
alternative. By the appropriate
layout of the luminaires and the
corresponding proportion of the
indirect component of the luminous
flux we can avoid the rise
of undesirable reflections when
working with glossy paper or
foils. If the printing is realised
on large machines, it is at the
same necessary to achieve
sufficient vertical illuminance.
We can use the additional luminaires
placed directly over the
machine or the task area.
For the multicolour printing
process and the inspection
operations it is necessary to
use the light sources with the
colour rendering index CRI >90
for correct distinguishing of colours.
It is important to choose
such light sources that produce
neutral white or daylight
white colour of light with the
correlated colour temperature
5,000 K ≤ T CP
≤ 6,500 K which is
closest to the properties of the
natural daylight.
The prepress workplaces are
today almost always equipped
with computers therefore when
designing the lighting system
we have to pay attention to
fulfilling the requirements of
the standard EN 12464-1 valid
for the VDU workplaces as to
the usage and layout of the
luminaires. The standard states
the minimal illuminance level
500 lux for this workplace and
the boundary values of the average
luminance which can be
reflected from the flat screens
must not exceed the values
of 1,500 cd/m 2 (displays with
high luminance) or the value
of ≤ 1,000 cd/m 2 (displays with
medium luminance).
For the multicolour printing process
and the inspection operations it is
necessary to use the light sources
with the colour rendering index
CRI ≥ 90 for correct distinguishing of
colours.
TORNADO PC 143
RECOMMENDED PRODUCTS
tornado PC LED 143
PRESTige LED 151
PRESTige 152
Printing
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