Canon imagePROGRAF TA-20 MFP 24" Large Format Printer with L24ei Scanner and Stand Kit - Manual (Page 764)

HP-GL/2 jobs are printed at maximum size, even if a standard size
is specified
Check Check the page size of the HP-GL/2 print job, as created in the source
application.
Set Conserve paper to ON in the touch screen menu.
Print settings
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