In version v2015R1, Overprint simulation was added to Qoppa’s Java PDF component jPDFEditor.
This advance PDF technique is used by professionals in the print and pre-press industry. Overprint simulation allows to preview how two distinct colors that overlap will mix when printed.
By default, Qoppa renders to RGB:
To render to CMYK with your own CMYK colorspace:
CMYK Rendering With Overprint
To activate overprint simulation with your own CMYK colorspace:
With this taken care of, we’ll be soon able to add support for Color Separation, sometimes in 2015.