HP LaserJet 9000 Printer series - Manual (Page 196)

B Control panel menus 196
Configure device menu
Sending submenu
Item Values Explanation
SCAN
PREFERENCE=COLOR COLOR
BLACK AND
WHITE
Determines whether the document is scanned in color or black and white.
FILE TYPE=PDF PDF
TIFF
MTIFF
JPEG
Specifies the file format of the e-mail attachment.