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Envelopes
Table 6-2 Envelope Specifications
ITEM
Base weight
Calliper
Furnish
Curl
Electrical surface resistivity
Finishing
Fusing capability
Moisture content
Smoothness
Selecting Paper and Media
All envelope paper properties must match the paper
specifications listed in Table 6-2.
SPECIFICATION
20 pound (75 g/m
5.5 mils (0.14 mm), single thickness.
100% chemical wood pulp with up to 30% cotton
fiber.
Envelope must lie flat, with no more than 0.25
inch curl across the entire surface.
2.0 to 15
10
10
ohms/square (conditioned at 22˚ C
(71.6˚ F) plus 50% relative humidity).
Cannot have adhesive exposed to the printer.
Must be accurately folded (±0.04 inches) so that
there are no more than two paper thicknesses
anywhere along the envelope surface. All glue
lines must be continuous and all folds must be
sharply creased.
Cannot seal, scorch, melt, offset, or release
hazardous emissions when heated to 200˚ C
(392˚ F) for 0.1 seconds.
4% to 6% by weight.
100 to 250, Sheffield scale.
2
), single thickness.
6–13
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