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PRINT GOCCO 'Full Colour' [CMY] and CMYK Designs
Using a computer [or PG Digital in this example] to colour separate a photograph - you can print CMYK designs in the PRINT GOCCO PG-11 machine.
Printing System Required
Printing of this style requires professional registration, and whilst other PRINT GOCCO models [i.e. PG-5] can be used, a long self registration process is required with the quantity of miss-prints and unaligned images is very high.
Colour Separating Your Photograph
You need to break down your photograph into the CMYK [Cyan, Magenta, Process Yellow & Black] for the printing process - this usually done on a computer using a program e.g. Adobe PhotoShop
The colour separation process into CMYK on the computer is not a novice task as this involves changing the pictures colour scales, dot gain and angle, black generation & limit - plus many more features for an accurate result.
In this example we have separated a colour photograph using a RISO PG Digital system, which removes all the hassle of separations on a computer.
Screen imaged directly from original picture
No manual colour separations
NO printer resolution problems
NO artwork preparation
NO Print Lamps for imaging the screen!!
We selected our colour photograph, in this case NEHOC Australia's founder Mr Stan Cohen pictured right.
In hindsight out artwork would have been best with a lighter background [not a dark brown couch & wooden wall].
How the screens were made
The photograph was inserted onto the artwork holder and placed into the left of the machine - a PG Digital Master into the Right.
The CMY option was selected and the PG Digital automatically separated the Cyan Layer from the Artwork on the first pass.
This process was repeated for the Magenta & Process Yellow screen [3 screens in total].
Printing the Design
CMY process is generally printed as the abbreviation suggests - Cyan followed by Magenta and Process Yellow last. The printing process is the same for normal PG-11 prints however the design must of course be registered first. Pictured right is Pat Gittins printing the Magenta layer.
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The CMY completed design
When you compare this to the original photograph [above] this CMY is the best reproduction we have ever seen PRINT GOCCO perform.
The ability of the PG Digital system to accurately separate the design into the CMY separations, blows away computer separation in both terms of time and effort required.
The other benefit is that the PG Digital system produces smaller, more accurately placed dots.