HP Designjet 5500mfp Color Manual page 15

Black and White Mode
Normal
Should be used for line drawings, text and
shades of gray. It is similar to the Brochure
type seen before, but for black and white.
B&W Photo
Should be used for pictorial images that
have many shades of gray. In principle,
this is equivalent to the Color Photo type.
Blueprint
Should be used when the original has very
similar bluish background and foreground.
If you selected Normal or B&W Photo for
this type of original the output would be
very noisy and it would be hard to
distinguish the lines.
This type of original performs a cleaning
of the background in order to make the
output clearer.
Sepia
This option uses the same principles as
Blueprint but it is designed for sepia color
backgrounds.
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Color Reproduction for the HP Large Format Color Copiers family: cc800ps, 815mfp, 5500mfp and 4200 scanner