| Silkscreen Printing
Without A White Flood
This is a brief tutorial
to help you get started with your graphic design for
Silkscreen Printing your CD or DVD discs. The information
provided here is based an assumption that you have a
reasonable working knowledge of graphic design terminology
as well as Adobe Illustrator or similar professional graphic
design programs.
It's possible to use the
shiny aluminum/silver disc surface colour in your design.
Doing so can be very effective but it's important to
understand how much room you actually have to work with.
Regardless of whether you are creating a design with
'positive' print (solid lettering and/or graphics printing
on the silver background) or a 'negative' print (printing a
solid colour that utilizes the disc's surface as the colour
for your lettering and/or graphics) be aware that there are
actually three different parts of the disc that can be
printed onto:
[A] The largest
area is the aluminum/silver coloured area that holds the
disc data/content.
[B] Closer to the
middle there is the "mirror band" which is a very
shiny/reflect silver colour.
[C] Surrounding
the center hole there is an area which will either be clear
plastic (as is generally the case with a CD disc) or
additional shiny/reflective silver (which is generally the
case with a DVD disc).

A replicated compact disc
(CD) was used in the example shown above. In the left-hand
column the example illustrates the process of printing a
disc using a white flood (aka: white 'backprint') prior to
printing the graphics. Most designers utilize the white
flood print as it provides a clean white/neutral background
for the graphics to be printed on as well as actually
enhancing the colour of the printed graphics. This is much
the same principle as painting the walls in your house...
applying paint onto a white coloured wall provides a much
better result than trying to apply paint to a dark coloured
wall.
The example in the
right-hand column shows what can happen if you create a
design that utilizes the disc's surface as an element of
your design (ie: no white flood) but not factoring in the
three different components that make up the disc's surface.
As you can see, the change in the background colour
negatively affects the visual appeal and legibility of the
design.
Avoiding The
"Danger Area" In Your Disc Design
As noted above, there are
actually three different parts of the disc that can be
printed onto. If you'd like to utilize the aluminum/silver
colour of the disc's surface in your design but avoid the
hazards of any unsightly overlaps onto the mirror band
and/or center section of the disc, the 'danger area' is
within a 36mm diameter (18mm radius) of the center of the
disc.
Important: By saying
"center of the disc" it means measuring outward from the
center of the center-hole in the middle of the disc... it
does NOT mean measuring outward from the edge of the
center-hole.
If you're creating a
'negative' print (printing a solid colour that utilizes the
disc's surface as the colour for your lettering and/or
graphics) the solid colour can still overlap the mirror band
and center section of the disc... it's only the areas that
knock-through to show the disc colouration that should be
kept outside the 36mm diameter 'danger area'.

Getting The
Best Of Both Worlds - Using A 'Custom' White Flood
It's possible to create a
'custom' white flood which allows you to be selective about
what parts of your 'negative' print knock through to the
silver of the disc and what parts knock through to the white
flood. As shown in the example below, it doesn't matter that
the "ABC123" lettering is inside the 'danger zone' because
there's a white flood behind it, but the "@" symbol is well
outside the danger zone so it can be knocked through to
silver.
Depending on how many
colours are in your design, your quoted price may not
include a custom white flood should you require one. Please
contact us to confirm.
Important: There are
limitations to what can be effectively printed using a
custom white flood. Small text/graphics, fine text/graphics,
and very tight registration can pose problems and may not be
printable. Additionally, when supplying your artwork that
includes a custom white flood you must design the custom
white as a distinctly separate colour (learn more about
colour separations) and include a notation on your Order
Forms that a custom white flood is required.
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