Since substituting fonts used by the PDF2DL loader is currently not possible in Brava 7.1, the recommendation was given (By OpenText) to try installing the font that is not displaying correctly on the system hosting the JobProcessor, but there is no guarantee that the viewer will display it with higher thickness. But using a different font when creating the PDF files (like Time New Roman Bold, another heavy font) may help in some cases.
For additional information, please Access your support requests and more, the new OpenText My Support: https://support.opentext.com