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The fonts supplied on your computer (TrueType) are not suitable for
printing--they are essentially smoothed bitmapped fonts, supplied in
fixed sizes. Professional type fonts (Type 1) are completely scalable,
because they are actually computed from algorithms that determine their
size and weight (requires installation of Adobe Type Manager). The difference
is obvious to a designer, but many users don't understand that a bold
version of a font is actually a complete typeface in a Type 1 font,
and not just a heavier version, drawn on the fly by your computer, of
the same face. In fact, some typefaces have many weights available.
Type
1 fonts are sold by numerous type houses (ex. Adobe's Type Library,
Bitstream), and have both screen and printer fonts as files that you
must supply with your document. The reason you must supply your own
fonts is to allow the type foundries control of the copyright--Adobe
offers over 2500 fonts, and each is painstakingly drawn and refined
before being offered for sale.
Some ISPs limit the size of files that can be sent as attachments to
under 2MB, in order to provide a higher level of service to all users.
Since documents that are going into prepress are often over 100MB, e-mail
is often not an effective file transfer method. Larger files should
be sent on removable media, such as Zip or Jaz disks, or via the Internet
using the standard File Transfer Protocol (FTP). In our WebLink area,
there is a link for customers to our FTP site. If you have a relatively
small file that you think can be e-mailed, you can compress it using
a utility such as StuffIt, PCZip, or other compression software.
Well, besides the document itself, we need all the files that are referenced
or used in the document. A partial checklist would include images, fonts,
logos and other graphics. Any checklist for getting a file ready for
electronic imagesetting (what we call a preflight checklist) ought to
include the most obvious, but least well-remembered utility you have:
spell check! You can save time, expense and aggravation with this valuable
tool. Collect your files by type into folders, such as fonts, images,
graphics, and double check that the names on the files are correctly
matched with their file names in the document.
Since our job is to transfer your electronic document into several thousand
printed images, it really helps to see what you intended. Send us a
paper "dummy," so we see how the job should be assembled and folded.
We're not sure how these miniature pieces got their name, but folding
up a piece that's printed front and back and then discovering that there's
a problem can sure make you feel like a dummy! And make sure you send
along the last, approved laser copy of the content--we proof against
that, to make sure there aren't any text re-flows or other surprises.
Let us do the work! Trapping is a technical adjustment to the mechanical
art, and for the best product, it should be done taking into account
our presses. Some software has an automatic trapping function, but generic
traps may not be right for the specifics of your job. We would prefer
to set the traps ourselves, after looking at each case where trapping
is needed. Why do we need to adjust that job you just approved? Good
question.
On
press, the ink spreads just a little (called "gain"). And each sheet
can stretch or shift just a hair as it goes through the press. So in
order to have the plates set up to take into account the registration
tolerance of printing, we add and subtract very tiny areas where colors
butt, encircle or entrap one another.
For
example, imagine a circle of yellow inside a block of blue. If that
circle shifted upward, there would be a white area at the bottom, and
a green area at the bottom. To provide some tolerance, we enlarge the
yellow circle, just a little, all around. In this way, the blue area
traps the yellow, and the result is a smooth, error-free print job.
We all get used to seeing images on screen, and forget about the specifics
of the graphic files. The GIFs and JPEGs that load quickly on the Web
do so for a reason: they're low resolution, compressed images. Your
72 DPI images are perfect for monitors that can't show higher resolution--but
those RGB colors are going to shift around in a CMYK interpretation,
and we need at least 300 DPI (at 100% of the size you are printing),
typically TIFFs, Illustrator files or EPS for reproduction. One way
to manage this headache is to have your Web art created using higher
resolution, and then use low-res images on the Web. Then you'll have
what you need when you're ready to use those images in a brochure or
data sheet.
One common error is compressing images and sending us the compressed
images for output. In large data files such as photographs, compression
can remove valuable information, and can cause errors in the output
of the imagesetter (especially LZW compression). Another error is including
outdated image files, such as a logo that was created in Illustrator
88. If you must use old files, import them into a current version of
the software, and then provide us the "updated" file.
Ideally, you want to crop and size the photograph before you send it
out for scanning. In this way, the file size is kept as efficiently
small as possible, and there is less chance for error or misinterpretation.
When you spec the scan, make sure you understand how you are going to
use the photograph, and what kind of stock and printing you plan. A
rule of thumb is to scan at about twice the DPI you plan to use as a
line screen, for example, printing at a 150 line screen, you would scan
at 300 DPI. However, this is assuming the image is cropped and scanned!
If you scan a full-length portrait at 300 DPI, and then decide to crop
down to head and shoulders, you only have enough information in your
scan for about a 45 line screen--coarse and grainy reproduction, at
best.
For
scans, we prefer transparencies (slides), rather than reflective art
(prints). And of course, larger formats give you lots more information
for the color reproduction.
Again, we're dealing with a question of resolution. The new digital
cameras with multi-million pixel recording devices can do a fine job…unfortunately,
the hype was pretty far ahead of the technology when these went on the
market. Another thought: just like having a PC doesn't make an administrative
assistant a graphic designer, having a digital camera doesn't give you
the same results as a professional photographer. Lighting and composition
are essential elements for good images that we can reproduce accurately.
Back when type was set by hand, there was a need for a new vocabulary.
In fact, we heard that the reason for calling letters "upper case" and
"lower case" is that the capital letters were in the top drawer, and
the little letters were in the lower drawer of the type case. Kerning,
which actually refers to the little serifs that extend beyond the letter's
block shape, is subtracting space between characters, to tighten them
up, perhaps in order to draw up a single word, left as a "widow" on
the last line, onto a full line. Tracking type is intentionally adding
space, which a designer might do with the letters in a subhead. "Leading"
refers back to bars of lead that spaced out lines of type--now it just
means the spacing between the baselines (the imaginary line the type
sits on).
Also,
you may want to watch out for spot Pantone colors which are incorporated
in your layout, but which are not anticipated in the print job. Designers
can easily pick a great Pantone color which doesn't have a close equivalent
in CMYK. Make sure that you are choosing colors from a CMYK palette
when you design a piece, and you'll always be pleased with the piece
on press.
Proofs are intended to show you an approximation of what your job will
look like on press. You may have a color inkjet printer in your office,
and you would immediately recognize that the colors are much too vivid,
too contrasty and that photographs have poor resolution, compared to
a printed piece. Our objective is to have a full range of proofing technologies--including
digital color proofs, WaterProofs, Cromalins and our new XP-4 proofs,
that can show you the halftones in place--all in order to simulate the
end product. After all, printing is actually a complex manufacturing
process, using many skills and technologies, and it's not easy to anticipate
the end result!
There
are three places where you can alter or adjust the color: as you adjust
the graphics on your computer, when we do the prepress work, and when
the job is actually on press. Use the experience of your rep to help
you understand how to adjust the color. For example, when you are incorporating
photography, the "loose color" proofs are the first look at the separations.
These may be just right, too warm, too cool, too green, too yellow…tell
us what you see (and make sure you're using accurately-balanced lighting,
such as in our proofing booths), and we can adjust the color balance
appropriately, as needed, on each image.
Contract
proofs are final proofs--as in final approval and transfer of responsibility,
i.e. "contract" --typo correction and design decisions should have been
made long before we got your file. However, getting a little warmer
or cooler tone to the job OVERALL can be done on press. Remember that
corrections to individual images cannot be done on press, so pay close
attention to each proofing step as the job progresses.
Our
contract proofs are intended to show you color as close as possible
to the way it will look on press. In fact, for really critical color
decisions, such as when you're printing process color on a colored stock,
like a cream or speckled paper, we can even proof the job on the actual
stock. We can also proof with very accurate rendering of Pantone (PMS)
spot colors--even metallics! Just ask your rep about the best proofing
technology for the requirements of your specific job.
Many people have had the experience of buying clothes inside a store,
and then discovering that the color shifted outside in daylight. In
the graphics industry, we prioritize our color proofing against the
color temperature of daylight (5500 degrees Kelvin), since it is the
prevalent natural light that we all use. It is also the color temperature
of the lighting that professional photographers use in the studio.
As
you know, incandescent lighting is more yellow, or warmer, and fluorescent
lamps are a little green or blue, unless they are specially balanced
toward natural light. With so many different lighting sources (mercury
vapor, sodium, etc.) in the business landscape, there needed to be a
standard, and natural light is it. This is especially important to consider
when looking at proofs or printed pieces, since they both depend on
reflected light to generate what we think of as "color." The color of
the light source, or the glare of the reflection off the surface of
the paper, both have a strong influence on whether or not we think the
color is accurate.
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