At 09:52 +0900 8/3/06, Yosuke Ichikawa wrote: >We're using Acrobat's preflight feature to check for lines thinner than >0.2 pts. The thinnest lines in our .eps graphics are exactly 0.2 pts, >but when we import these graphics in FM and check the PDFs created from >FM, Acrobat preflight says the graphics uses "0.199600pt" lines. > >PDFs of these individual graphics, created from Illustrator, do not >have problems with Acrobat prefight, so it seems to be some sort of FM >conversion problem. > >Why does this happen, and is there any way to prevent this on the FM >side? If there is no way to fix this, we'd have to tell our illustrator >to make the lines in the graphics slightly thicker.
This looks a lot like a rounding error problem due to two different applications using different precision math. In floating-point math, computers use a set number of bits to represent the complete range of natural numbers. As a result, some numbers actually cannot be represented precisely: the more bits you use, the closer you get, but there's always a compromise. I guess you have two approaches: . Ignore the preflighting and print anyway . Make the lines a little thicker -- Steve