Hi, first may I point out that I am a prepress guy and not a pressman and therefore this question may be stupid - please forgive my ignorance.
THE PROBLEM: many of the single Pantone colour print jobs we are outsourcing arrive back with a variation in colour across the entire print run. It is not a linear variation e.g. getting lighter as the run progresses. It is just random. When our client puts a spread of these items out on a table for people to take one then the variation in colour is off putting - even though it is only a small, but visually significant amount.
Example 1: business card, coated 300gsm, 2 Pantone colours on face which are fine, 1 Pantone colour on rear which is full coverage of business card with one piece of reversed out text of a website address. Run lengths: 250, 500, 1000 & 2000.
Example 2: postcards, 300 gsm stock, full coverage of 1 Pantone colour to face with reversed out type saying, "Summer Event Special" the reverse has two colours and is fine. Run lengths: 1k, 2k, 3k, 4k & 5k.
It appears to only be a problem when the entire area of the job is being coated with ink.
The business cards are not gloss varnish coated, but the postcards are.
Is this normal? How can we get rid of it?
THE PROBLEM: many of the single Pantone colour print jobs we are outsourcing arrive back with a variation in colour across the entire print run. It is not a linear variation e.g. getting lighter as the run progresses. It is just random. When our client puts a spread of these items out on a table for people to take one then the variation in colour is off putting - even though it is only a small, but visually significant amount.
Example 1: business card, coated 300gsm, 2 Pantone colours on face which are fine, 1 Pantone colour on rear which is full coverage of business card with one piece of reversed out text of a website address. Run lengths: 250, 500, 1000 & 2000.
Example 2: postcards, 300 gsm stock, full coverage of 1 Pantone colour to face with reversed out type saying, "Summer Event Special" the reverse has two colours and is fine. Run lengths: 1k, 2k, 3k, 4k & 5k.
It appears to only be a problem when the entire area of the job is being coated with ink.
The business cards are not gloss varnish coated, but the postcards are.
Is this normal? How can we get rid of it?