Canon imageprograf ipf780 User Manual page 176

Priority setting for rotating 90 degrees
Setting
Rotate 90 Degrees If Possible
Use Driver Settings
Selecting Rotate 90 Degrees If Possible or Placing a checkmark for Rotate Page 90 degrees (Conserve Paper)
on the printer driver
Selecting Use Driver Settings
176
Rotates pages in portrait orientation 90 degrees before printing. Pages are only rotated if
they can fit lengthwise across the roll.
Follows printer driver settings when determining whether to rotate pages.
Details
iPF780
User's Guide