PO print preview problem

Hi,

I have maintianed following Text in PO item level in info record text .

Evaporated Salt, meeting these requirements:

Sodium Chloride: >99.8 wt%

Calcium/Magnesium: <20 ppm

Calcium Chloride: <5 ppm

Water Insolubles: <50 ppm

Approved:______________________________ Date:_____________________

But when i see in print preview , it showing as below

Evaporated Salt, meeting these requirements:

Sodium Chloride: >99.8 wt%

Calcium/Magnesium: <(><<)>20 ppm

Calcium Chloride: <(><<)>5 ppm

Water Insolubles: <(><<)>50 ppm

thus some unecesaary special characers are appearing in Print preview.

what could be the possible cause for this?

how this can be rectified?

Thanks

Akkshaya