Think the previous post was asking you to "put up or..." as they say. You said Richard's advice was bad but didn't actually give your way to do it at all.

Yes I Did Say If Any One Had Any Problems They Could Ring Me Or I Would Ring Them I Must Admit I Find It Easier To Talk To People Because I Can Ask Specific Questions About What Press They Are On Dose It Have A Scanner , Khs Ect 6 People Have Took Me Up On My Offer If You Think About What He Said How Would That Possibly Work With The Ink Ratios I Don't Have To Defend Myself I Am Here To Help You Don't Have To Take My Advice.

The PQC has been around for a good number of years now, the ratios work in the way I described on all of them. The setting of those ratios are indeed dependent on many factors but the bottom line is the faster the press speed the more ink/damp you need to compensate. That's why the %'s don't go negative.

The method you use to achieve accurate compensation has to be a combination of the ink, damp and press speed. Perhaps I overstated the case for running at full speed - but unless you do run at full speed you'll never know what will happen to the balance and ink density.

How else could you predict it?

Having said all that my initial query to KD remains unanswered and I am not so arrogant as to believe I am 100% correct, so I am prepared to be corrected.

By scanning I assume KD means densitometry at the PQC either integrated or manual - you could theoretically use the densitometer info to detect changes in density relative to speed and adjust accordingly. Fact remains you need to know which to alter, damp or ink. Allowing a little catchup, then increasing damp ratio to clear it is the surest way IMO, to determine the optimum balance, if the ink density is low at that point then you'd alter the ink ratio.

As for plate scanning or KHS these are pretty much irrelevant for the purposes we're talking about. It's only the initial data for setting ink profiles, and as anyone knows who uses them it is only a starting point.

Richard is right in what he is saying but you start from 7,500sph and set both at the same time as you gain speed at set times i use 5 points although another demonstrator uses 6 KHS is as Richard said a colour management system linking repro to the press for an accurate MR although if you don't have a scanner its not a management system. although if you do have a scanner its a great help in setting up the ratios as its easy to see on the density what you are loosing BACK TO MY FIRST POINT ALL I SAID DONT TRY TO SET IT AT FULL SPEED IT DOSNT WORK

Ok KD, we're getting somewhere now.

But can you clarify whether you mean 'scanner' as in a CCD array ie image capture, or do you really mean densitometer?