REAL
ONE METER PER SEC PARALLEL PRINTING SPEED
Digital
Printing of Billboards
Besides TV, billboards
are one of the most effective advertiing media. The past few decades have
seen striking improvements in this area of outdoor advertising. Statistics
suggest that there are over ten million billboards worldwide. The advertisements
are replaced at regular intervals of 10-30 days which could mean up to
150-200 million billboards a year.
Taking the total cost
of an ordinary billboard into consideration, advertisers spend at least
$4.5-6 billion on multiplication . Since there is a cut-throat competition
in the billboard market only a small profit margin is attainable owing
to the high costs of raw-materials and equipment etc.
There is a great demand
for relatively low volumes so output prices include a high proportion
of materials and labor costs. It is unlikely that the overall costs of
billboards will decrease considerably if the conventional technologies
are used. New multiplication techniques are no real alternatives to the
market dominance of the offset method.
Only partial solutions
have been found to the above-mentioned problem because the digital printing
systems have not been applied for printing high volumes. This is mainly
due to the fact that large format images need the quick motion of big
quantities of ink. Only a few technologies e.g. Xerographic are capable
of applying and carrying such ink quantities.
However, the elaborateness
of the equipment in use and the high cost of the special materials result
in prices which are difficult for the market to accept. On top of all
these the resistance of the final product to the harsh weather conditions
can only be improved by costly supplementary work..
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