Forum > Fujifilm XMF

Default Spot Screen Angle

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Tracy:
anyone know how to find what angle the Default Spot Angle is? XMF

We have a job we have printed for 15 years different presses different line screens
and no problems, this went out to an outside printer and an image moire'd
we have had these printed at other printers without problems also

the image is a scanned 1200 dpi, 1 color
I see that they did use a different screen angle in the printed piece
I'm sure you smart guys can give me some insight on why this happened!

born2print:
If the image is only 1/c, there should be no possibility of a moiré at any angle...
unless the scan was a re-screen and the moiré is in the image.

If the image was more than 1/c, the usual suspect is that the default non-process color angle is the black angle and it needs to be changed for that job.

DCurry:
If it's a 1-color job, I doubt very much that the angle matters other than some angles will give you jagged sawtooth edges along screened areas (we use 45 degrees to make edges clean.) What may have happened is the plate was imaged at a res that is not evenly divisible by 1200, or perhaps the 1200ppi image got re-sampled somewhere in the workflow.
(Dammit, born beat me to the punch as I was typing!)

born2print:
"What may have happened is the plate was imaged at a res that is not evenly divisible by 1200"

Whoa, like a machine-pixel moiré... that sounds so crazy it just may be true!

david:
what about 2540?


that used to be the default res... in the olden days

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