HP Photosmart Pro B9180 Photo Printer - Manual (Page 18)

Align the right edge of the media against the raised edge of the tray and not against
the side of the printer. Misaligned media can result in skewing or other printing
problems, including paper jams.
Tip If the media is curled, you can open the top door to check that the media
feeds under the rollers smoothly. Be sure to close the top door again.
5. Press OK on the printer.
To load canvas in the specialty media tray
1.
Lower the specialty media tray.
Wait while the printer raises the printhead assembly in preparation for printing.
HP Photosmart Pro B9100 series User Guide 15