This program is part of Netpbm.
thinkjettopbm reads HP ThinkJet printer commands from the standard input, or thinkjet_file if specified, and writes a PBM image to Standard Output.
thinkjettopbm silently ignores text and non-graphics command sequences.
The -d option turns on debugging messages which are written to the standard error stream.
The program handles only a small subset of ThinkJet command sequences, but enough to convert screen images from older HP test equipment.