remove nonprinterble Charactors with Perl

[gucky]

Hello,

I have konverted some PDF Files with pdftohtml to html. I have written a Perl Script to delete some HTML Token, but now i have to delete some non printerble characters with perl.

I tried the Regex s/[[rint]]//g and the negotated regex s/[![[rint]]]//g, but both regex didn't work correctly. Can someone tell me how i can delete the Characters?

thanks

Gucky