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we went to DNP, that customer with the "Roller marks" and only after I >
show him that if I rotate the plate 90 the marks change the direction he was convinced
that the marks come from the processor.
The marks appear in UNI20%.and you can see them on the press.
After some tasting we discover that when the plate pass the first set of rollers (after the developer bath) there is stream of developer from the second set of rollers. This stream cause the lines on plate.
To over come that problem we change the direction of the water nozzles to get the first set of rollers dry.
Reduce the amount of water in the pool , and we swap the two sets of rollers and reduce the temperature to 20.5.
Richard was very cooperative in this case.
As I mention to you before it can cause a lot of confusion in the "field" as this marks look the same as rollers marks.
Best regards
Mario Amir