Talk:Printer Command Language

From the article:

   * PCL1 was introduced in 1984 on the HP ThinkJet 2225 and provides basic text printing.

...

   * PCL3 was introduced in 1984 with the original HP LaserJet, adding bitmapped fonts and graphics capability.

Actually, ISTR PCL has always had graphics capability. PCL1 on the Thinkjet ran at 150dpi, then the LaserJet series upped that to 300dpi, with 150dpi compatibility...