Re: density shift - how much is too much
Re: density shift - how much is too much
- Subject: Re: density shift - how much is too much
- From: Phil Green <email@hidden>
- Date: Fri, 23 Mar 2001 00:19:17 +0000
- Organization: LCP
email@hidden wrote:
>
How much density shift is "normal" in a print run using process color
>
printing? (Assume we are talking about a high speed device that is
>
outputting hundreds or thousands of pages per hour, versus a slower
>
device.)
Tolerances vary, but in sheet-fed printing +/- 0.1D would be typical.
>
Would you expect to see a different amount of density shift for the
>
different colors? (In other words is it normal for one color to shift a
>
different amount than the others?)
It inevitably happens, although it's more common to see a rise or fall
in density across all colours. If the densities are allowed to vary
independently then the colour balance goes.
--
Phil Green
Colour Imaging Group
School of Printing and Publishing
LCP
Elephant and Castle, London SE1 6SB
Tel: +44 020 7514 6759 Fax: +44 020 7514 6772
http://twinpentium.lcp.linst.ac.uk/digitalcolor/cig