Vertical line at right edge of graphics frame

[Beverly Robinson]

Environment:
  TCS 2 (FrameMaker 9p255)
  Windows 7 (also seen in XP SP3)
  .png images created from CorelDraw X5 (also seen in screen captures done with Snagit 7-I know, it's old)
  Images imported by reference to graphics frames anchored to a Body paragraph
  Image resolution typically 300 dpi (screen captures at 150 dpi)
  Image size varies, never larger than half a page

Problem: A tin black or grey line appears along the right edge of some-not all-anchored frames. The line is not visible in FrameMaker, only when printed or saved as PDF using Adobe PDF printer.

Does anyone have a solution to this problem?

Thanks for your help,
Beverly

NOTICE - This message and any attachment(s) are for authorized use by the intended recipient(s) only and may contain privileged or confidential information.  Unless you are an intended recipient, you may not use, copy, retain, or disclose to anyone any information contained in this message and any attachment(s).  If you are not an intended recipient of this message, please immediately contact the sender and delete this message and any attachment(s).
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.frameusers.com/pipermail/framers-frameusers.com/attachments/20110909/a073dcff/attachment.htm>