"Color Usage" is a parameter that you can assign to the colors of a job in the Prinect Manager ("Usage" column in the job settings). This parameter lets you assign a usage to a color separation. For example, "Coating Unit" means that this color separation will be printed only at the coating unit.
In the ImpositionProof sequence, you can use the "color usage" options to define which color separations with an assigned usage will be proofed.
You can enable or disable the following color usage options:
•Printing Unit
When this option is enabled, all the separations assigned "Printing Unit" as the usage will also be output on the proof.
•Special, printing unit
When this option is enabled, all the separations assigned "Special, printing unit" as the usage will also be output on the proof. These separations will be printed using the relevant printing unit but there will be no color control.
•Coating Unit
When this option is enabled, all the separations assigned "Coating Unit" as the usage will also be output on the proof. These separations will be output solely as varnish work.
•Tool
When this option is enabled, all the separations assigned "Tool" as the usage will also be output on the proof. These separations generally contain just die marks and can be used, for example, for producing die tools.
•Proof
When this option is enabled, all the separations assigned "Proof" as the usage will also be output on the proof. These separations generally contain (Imposition)Proof marks in a "ProofColor" or "DieLine" color. They should not be used for imaging.
•External
When this option is enabled, all the separations assigned "External" as the usage will also be output on the proof. These separations generally contain marks for work processes outside the normal offset workflow, e.g. embossing.
By selecting or deselecting the single color usage options, you can output special proofs with different PageProof sequences, for example, to check the cutting die.
Note: Details about color usage can be found in the Prinect Signa Station documentation.