>>>In dealing this issue it comes from the version ms access 2003 to the current 2013 and is not yet resolved the issue of display and print reports prior to the PNG transparencies, even without solution ...
According to your description, this issue is a known issue, you could try below workaround:
- Insert a GIF-image/png (with transparent background) into Word.
- Right-click the image in Word and copy it.
- Paste it in Access in a form (design state).
- Right-click the image in Access and set backgroundcolor to transparent.
In addition if you have any feedbacks for Access, please feel free to submit them to User Voice:
http://access.uservoice.com/
Thanks for your understanding.