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Printing Processes
Digital: very cost effective for short
run printing, it works directly from electronic
data and print in four colour process. The quality
is not quite on a par with lithography and you
cannot use single Pantones or
metallic inks.
Litho: by far the most popular print process,
a metal plate is treated so that the image area
attracts the oil-based inks, while the wet non-image
areas resist them. The process is more expensive
than digital
though and only starts to pay for itself on larger
runs.
Screen: is historically the oldest form
of printing. Ink is applied to a porous silk screen
and passes through a stencil or template to leave
an impression. Normally used for t-shirt printing
and banners.
Thermal: is the process of creating an
image using a heated print head. The print does
not smear and is water resistant.
Web: a method of printing which uses a
continuous roll of paper. They are very fast presses
and are only suitable for large print runs.
Sizes
Standard sizes are more cost effective as they
make the most economical use of the paper:
Business Cards - 88mm x 55mm / 85mm x 55mm
Letterheads - A4 - 210 x 297mm
Compliments slips - DL - 210mm x 99mm
A7 - 74.25mm x 105mm
A6 - 105mm x 148.5mm
A5 - 148.5mm x 210mm
A4 - 210mm x 297mm
A3 - 297mm x 420mm
A2 - 420mm x 594mm
A1 - 594mm x 841mm
AO - 841mm x 1188mm
Colour
Printing
Four colour process / CMYK: printing in
full colour. The inks used are translucent and
can be overprinted to produce a variety of different
colours.
Spot colour printing: refers to solid
colours which are found in commercially obtainable
colour ranges such as Pantone®. Two colour printing
is used regularly for printing stationery, in
order to save money
on inks.
It is worth bearing in mind for future jobs that
should you want to print in CMYK, the chosen Pantone® may
not have a suitable CMYK equivalent, which may
in turn lead to the added expense of using a fifth
plate.
Metallic inks: spot colours which produce
gold, silver, bronze or metallic effects.
Binding Options
Saddle stitching: binding folded pages
by stitching them through the spine from the outside
with wire staples. Not recommended for products
of more than 64 pages in length.
Perfect binding: this is often used for
binding books and large brochures. The printed
sections are collated and held in the spine using
glue.
Spiral binding: secures loose pages with
looped wire that fixes into holes down the left
hand side of the page. It allows for products
to lie flat when opened, but can be less durable
than the other binding options.
Materials
There are many different paper mills offering
an extensive range of papers, most of which fit
into one of the following categories; gloss coated,
matt coated, silk or satin coated and uncoated.
All the terms are pretty self-explanatory, so
you just have to think about what impression you
want to make and remember that uncoated papers
are more likely to absorb the inks, leaving a
slightly softer finish.
GSM: an abbreviation for grams per square
metre, which indicates how heavy paper or card
stock is. As a guide, you could work on the premise
that copier paper is approximately 90-100gsm,
while at the other
end of the scale, postcard stock is between 350-400gsm.
Folding
Folding is a relatively cheap and easy way to
give you more pages to play with. If you want
your print work supplied folded, then make sure
you mention in the quote request; the start size,
the finished size and
how many sides there will be when folded.
Different folds include; single fold, gate fold,
roll fold and map fold.
Finishing
Spot gloss: the advantage of spot glossing
is that it is similar to printing an extra colour
and can be applied to particular areas to produce
special effects and a glossy finish.
Die-cutting: a template can be made to
cut almost any design or shape. The most common
dies are made to form pictures or geometric shapes.
Embossing: stamping a design into paper
or card to produce a raised effect.
Blind embossing: no ink is used for this
type of embossing; instead, the design or text
is only visible as a raised area on the paper
or card.
Debossing: creates a depression rather
than a raised impression.
Laminating: if you have room in your budget
to add lamination, it can really define and dramatise
your print, whether you opt for a soft matt lamination
to create a velvety finish or a gloss lamination
to catch
the light and add a bit of shine. It also acts
as a protective barrier if your print needs to
be more durable or is likely to encounter a demanding
environment.
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