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Re: Contract Proof?
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Re: Contract Proof?


  • Subject: Re: Contract Proof?
  • From: Ray Maxwell <email@hidden>
  • Date: Mon, 06 Mar 2006 20:10:49 -0800

I have always been some what amused by the term "Contract Proof".

I was told that there have been court cases over not matching a contract proof. The basic understanding is that you don't have to pay the bill if the print run does not "match" the proof. In addition the client has to sign off on the proof and then sign again on one of the first sheets of the run. This also means that they have to be present for a press check.

Now what is wrong with this picture?

How can you define a contract based on a "match" when no one specifies a tolerance using some kind of objective measurement.

I have made measurements of a press run and found that a Speedmaster 74 has a measurable variation cycle every 4 sheets due to how its ink train is designed. While this variation is small, it is measurable. There are other measurable variations within a run due to speed and temperature changes in the run. So this means that sheets within the run don't exactly "match".

Imagine a person ordering a machine part and not specifying a tolerance!!! No one would take them seriously.

This points out that our industry is still practiced as art and craft and is not a manufacturing process. We have a long way to go to establish real international standards in this area. We are not at a point where we can "print by the numbers" yet. Imagine a time when a creative artist can produce art and send a file and know that the final printed piece will be manufactured within a certain delta E.

Fuji, Imation, Dupont, and Kodak all made laminate proofing materials. They used very expensive spectrophotometers, instrument metrology programs, statistical process control, and worked to very tight unpublished tolerances. This is what gave our industry very good control over proofs and color. With the advent of ink jet proofing all of this control is now the responsibility of the local creative artist, prepress, and printer. We have a ways to go before we can print with the precision that those proofing materials were manufactured to. We have a lot to learn when it comes to making printing a manufacturing process.

I would say that the publications printers have made the most progress in this area. The packaging printers have also moved ahead in standards. However, the commercial printers have a way to go in this area.

Ray




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