Dickeson--Cyan, Yellow, Magenta, Black Magic
Don't like it? Then buy better paper, press, inks, blankets and press controls to move the process level up to what you want—or what you can get your customers to pay for. Stop hollering at the press people and diddling ink keys to match proofs you can't possibly match. Think of the wasted press time and materials this might save. Agree?
Hold on a moment. Suppose I took those 10 sample sets, computed the averages of the data, found the standard deviation of the samples from the average, multiplied it by three, then added and subtracted it from the average to arrive at upper and lower control limits.
That sounds like SPC (Statistical Process Control) Shewhart Charts, doesn't it?
So I asked one of the reps if they were doing that. "No," he said. "Rog, we haven't programmed for that yet. We can do it any time."
But then, I wondered, would printers use it? "Never underestimate the ignorance of the public" is a guiding principle of marketing. I hate that kind of thinking. It's wrong. I say, "Never underestimate the intelligence of printing people."
If they don't see it at first, teach 'em about investigating special causes when a number penetrates a control limit in order to improve the process. If it's right, printers will grab it and run with it! Would that save time and materials and make for happier customers? What do you think?
Then I thought about all the times, when I was a printing CEO, that a publisher had demanded a credit for quality because the ad agency was beating him for a credit or "make good." Suppose I handed the customer a spreadsheet with all the numbers from all the samples from their job from such a system and let them see the process capability, the oscillations within the control limits and maybe an instance of a special cause where we shut the press down to investigate.