Aurora is a PostScript program for producing colour separates from a colour PostScript document. Aurora can be run from any type of computer, as it depends only on a black-and-white PostScript printer for its execution. It is capable of handling colour images as well as ordinary graphics, though image handling is very slow.

It is necessary to send to the PostScript printer the file "aurora", followed by a colour primary selection, optionally a screen specification, and then the PostScript document whose reproduction is sought. With some operating systems, it is best to join (or concatenate) the separate files into a single one before despatch to the printer. They must be treated as a single job by the PostScript printer.

This procedure must be followed for each desired separate. Aurora can be used to produce the separates for a set of process colours, extracting a particular process component of every colour used in the document. It can also be used to pick out a particular custom colour, giving only those parts of the document that precisely match a requested colour.

For people without a PostScript printer, an interpreter such as ghostscript can be used to process a Quikscript document for printing.

To fetch Aurora the files have been packaged using tar/compress for Unix users, or the individual files are available separately.

Mail to Graham Freeman

< < Back