Ricoh MP C7500 - Manual (Page 39)

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The screen may look complicated but the
settings, once made are normally left alone;
the controller will just get on with the job in
hand.
Pantone Colours (‘Spot On’ Option)
The Fiery controller has the ability to print Spot
colours. They are normally referred to as
Pantone Colours but not all can be printed as
many Pantones colours use more than just
CMYK Inks. Using the Fiery, users can
produce Pantones that are within the Colour
Range of the Copier using CMYK Toner.
What are Pantone Colours? Ready mixed inks
used within the Offset Press environment. The
inks can be purchased straight off the shelf
ready to use, or an offset press operator can
make up the chosen colour using various base
inks. With the later option the colour accuracy
is down to the experience of the mixer! There
can be up to 17 base ink colours used to make
Pantone colours including White ink. The
CMYK process on a colour copier/printer uses
just the 4 Toner colours - Cyan Magenta
Yellow and Black.
Corporate colours are often chosen from the
Pantone library. Some companies deliberately
choose colours that are not able to be printed
or recreated using just CMYK which stops
people trying to copy or counterfeit goods.
Most applications that support named colours
send the print job to the printing device with
the named Colour as well as the application’s
own interpretation of CMYK data for that
colour. Different software applications interpret
the CMYK data in different ways with the
result that prints from different applications
often present Pantone colours in different
ways.
The Fiery controller works differently, it
ignores the CMKY data for the named colour
and uses its own reference table. When
different applications demand the same
named colour, the Fiery outputs the same
colour, achieving a more consistent output.
Not all Pantone colours can be printed using
just CMKY Toner, so please do not assume
that all colours will be printed accurately, the
Fiery controller will print Pantone colours that
use Process colours (CMYK) within the colour
capabilities of the engine being used. So
another manufacturer’s machine may not be
able to print certain colours that we can.
Auto Trapping (Option)
Auto Trapping is an option for the Fiery
version of the product. When this option is
fitted the Fiery controller looks at the print data
and looks for areas that might produce a white
Halo around an image. Where found, the
controller will adjust the print data to “Fill in”
the area concerned.
This sample illustrates a File that has been
printed without Auto Trapping. You can see a
white halo effect where text has been overlaid
over a coloured background.
The nest sample illustrates a File that has
been printed with Auto trapping switching
turned ON. The white area around the edges
has been eliminated by “Filling in” this area.
Key Selling Points