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Here are a few tips to help
your print design process go smoothly. Some of these tips may be elementary
to seasoned designers, but they will defiantly help anyone who is plunging
into the print design realm.
Trapping
After you have designed your piece and before you take it to be output
to film, make sure that you have trapped appropriately. Trapping is the
porches of slightly overlapping inks where two solid colors meet. This
technique helps to compensate for any paper shrink or movement on the
press that may cause slight misregistration. If you do not trap, and there
is any mis-registration, then you may see tiny white lines where the inks
did not match up properly. An exaggerated example of this would be when
you notice that the colors in the comics of the Sunday paper have shifted.
Usually trapping is most important when you are using two or more solid
ink colors, such as the industry standard Pantone Ink colors. There are
several techniques for trapping, and most DTP (Desktop Publishing) programs
have their own methods, so for exact instructions consult the owners manual
for the DTP program that you are using, but to give you an idea of what
is going on here's a brief overview.
In essence what you are doing when you trap is assigning a stroke (around
a letter for example) that will overprint (print on top of all other colors
in the job). The width of this stroke (usually between .18 points and
1 point; different requirements for different print jobs) falls half way
onto both inks. Now, with the trap, if there is a slight shift in the
paper or shrinkage the overprinting stroke will fill the gap.
Bleeding
Simpler than trapping is bleeding. If you are ever designing a piece that
will have a full bleed (have ink that goes all of the way to the edge of the paper)
then you need to bleed it. What bleeding does is run your inks over (usually about
.25 - .5 inches) the edge of the paper.
You do this so that when the job is all printed and ready to be cut and
folded, there will not be blank spaces (much like mis-registration gaps)
if the cutter misses the edge by a small amount.
Correct Color
We live in a wonderful world of technology, but if there is
any industry that shows how far we have left to go its the printing industry.
The trickiest part in designing a print piece is getting accurate color
when it comes time to go to press. The reasons for this are numerous but
in short we can say that what you see on screen ain't always what you
get on paper.
Monitors (and televisions for that matter) display colors by combining the colors
Red, Green and Blue (RGB) in different combinations to make up every other color.
This is like the reverse of sunlight being broken down into its primary colors in
a rainbow. On the other hand, when printing, all possible colors (in a four color
job only) are created by combining different combinations of Cyan, Magenta, Yellow
and Black. So what we have are two different methodologies that do not translate
perfectly from one to the other, and thus we sometimes have error.
The details in getting good color could fill a book, but these ones should give you
a good solid platform to get started with.
- Expect Variation. No matter what you
do, color will always be something that will need extreme attention
and adjusting.
- Never trust your monitor.
Even with the best monitor, you will not get truly perfect color
reproduction from monitor to press let alone from scanner to monitor
to press.
- Use your pantone books. Always trust
your pantone books over your monitor. You can get these color swatch
books to use as a reference when picking and proofing colors.
- Get a proof if needed. If accurate color
is critical to the job, then plan extra time and money to pay for a
good proof. This will save you a lot of headaches in the long run.
- Use a decent monitor. You don't need
to pay thousands of dollars for a good monitor, but a good monitor can
make your job a lot easier. You should be able to find a good 17"
monitor for about $650 - $700.
- Calibrate your monitor. There are plenty
of ways to do this, from $2,000 color calibration hardware to adjusting
simple system settings on your computer. Most good monitors will come
with some software calibration that works pretty well when used correctly.
- Use a capable computer. Even the best
monitor will look horrible if the computer running it can't drive it
accurately. Critical here is the ability to display at least "Thousands
of Colors" and preferably "Millions of Colors" . All
color Macintoshes have the ability to display at least "Thousands
of Colors" but many Windows machines can only display 256 colors.
To extend your computer's color capabilities look into a quality video
card and/or possibly adding some VRAM (video RAM) to your system.
- Scan appropriately. Use a scanner that
has good color depth (at least 24-bit preferably 30-bit) and good reviews.
If the job is important enough, pay to have your photos drum scanned
to get the most color possible.
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