Konica Minolta bizhub PRO 1051 - Manual (Page 293)

Troubleshooting 11
bizhub PRO 1200/1200P/1051 Printer 11-5
Non fixed size paper can not be printed correctly (Macintosh).
<Response>
The direction in which non fixed size paper is loaded in the copier may be
incorrect.
Rotate the paper direction 90 degrees and then try printing after changing
the settings of the driver and copier accordingly.