Brother MFC MFC-7840W User Manual

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2
Types of envelopes to avoid 2
CAUTION
DO NOT use envelopes:
• that are damaged, curled, wrinkled or an
unusual shape
• that are extremely shiny or textured
• with clasps, staples, snaps or tie strings
• with self-adhesive closures
• that are of a baggy construction
• that are not sharply creased
• that are embossed (have raised writing
on them)
• that were previously printed by a laser
machine
• that are pre-printed on the inside
• that cannot be arranged neatly when
stacked
• that are made of paper that weighs more
than the paper weight specifications for
the machine
• with edges that are not straight or
consistently square
• with windows, holes, cut-outs or
perforations
• with glue on surface as shown in figure
below
• with double flaps as shown in figure
below
• with sealing flaps that have not been
folded at purchase
• with sealing flaps as shown in figure
below
• with each side folded as shown in figure
below
If you use any of the types of envelopes
listed above, they may damage your
machine. This damage is not covered
under any Brother warranty or service
agreement.
Occasionally you may experience paper
feed problems caused by the thickness,
size and flap shape of the envelopes you
are using.

Brother MFC MFC-7840W Specifications

General

Print Technology	Laser
Print Resolution	Up to 2400 x 600 dpi
Paper Capacity	250 sheets
ADF Capacity	35 sheets
Scan Resolution	Up to 19200 x 19200 dpi (interpolated)
Fax Modem Speed	33.6 Kbps
Functions	Print, Copy, Scan, Fax
Maximum Copying Resolution	600 x 600 dpi
Optical Scan Resolution	600 x 2400 dpi
Wireless	Yes
Copy Resolution	600 x 600 dpi
Fax Transmission Speed	33.6 Kbps
Display	LCD
Weight	25.6 lbs
Connectivity	USB, Wireless
Scanner Type	Flatbed
Connectivity Technology	Wireless, USB
Printer Type	All-in-One
Scan Type	Flatbed, ADF