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.

 

RGB Rendering

By default, Qoppa renders to RGB:

RGB (default) Output Preview
RGB Output Preview (Default Rendering)

To render to CMYK with your own CMYK colorspace:

 

CMYK Rendering

getPDFEditor().setOutputPreview(myCMYKColorSpace, false);
CMYK Ouptut Preview
CMYK Ouptut Preview

 

CMYK Rendering With Overprint

To activate overprint simulation with your own CMYK colorspace:

getPDFEditor().setOutputPreview(myCMYKColorSpace, true);
CMYK Output Preview with Overprint
CMYK Output Preview with Overprint

 

With this taken care of, we’ll be soon able to add support for Color Separation, sometimes in 2015.