pbmtoptx
converts PBM bitmaps to Printronix printer graphics format
TLDR
Convert PBM to Printronix format
$ pbmtoptx [input.pbm] > [output.ptx]
SYNOPSIS
pbmtoptx [file]
DESCRIPTION
pbmtoptx converts PBM bitmaps to Printronix printer graphics format. Printronix made line printers with graphics capabilities. Part of Netpbm toolkit.
SEE ALSO
pbmtoepson(1), pbmtolj(1)