Printable Area; Unprintable Area - Brother HL 1240 - B/W Laser Printer Service Manual

Envelopes
The following types of envelopes are not recommended for use.
Damaged, curled, wrinkled, or irregularly shaped envelopes
Extremely shiny or highly textured envelopes
Envelopes with clasps
Envelopes with self-adhesive closures
Envelopes of baggy construction
Envelopes not sharply creased
Embossed envelopes
Envelopes already printed by a laser printer
Envelopes pre-printed on the inside
Envelopes that cannot be arranged uniformly when placed in a pile

Printable Area

The figure below shows the physically printable area.
4.2 mm
(0.17 in.)
Fig. 1-6 Envelopes
6.35 mm
(0.25 in.)

Unprintable area

Fig. 1-7 Printable Area
1-14
5.1 mm
(0.20 in.)
4.2mm
(0.17 in.)