scatter chart printing in word

[MSK]

I have had a problem when insert a chart from excel to
word.
I ususlly make scatter chart in Excel.
And, scatter chart is copied and paste to word as a
picture file (enhanced metafile).
But, when I print this pasted scatter chart in word
(actually this is a picture file now), the line in scatter
chart is not smooth but distorted.
If anybody has a same problem and solve it, please let me
know.

Thanks.