HP (Hewlett-Packard) 9050MFP User Manual

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ENWW
Media specifications 189
Envelope construction
Envelope construction is critical. Envelope fold lines can vary considerably, not only between 
manufacturers, but also within a box from the same manufacturer. Successful printing on 
envelopes depends upon the quality of the envelopes. When selecting envelopes, consider the 
following components:
Weight: See 
 for supported envelope weight.
Construction: Prior to printing, envelopes should lie flat with less than 6 mm (0.3 inch) curl 
and should not contain air. (Envelopes that trap air can cause problems.)
Condition: Make sure envelopes are not wrinkled, nicked, or otherwise damaged.
Sizes in Tray 1: See 
Envelopes with adhesive strips or flaps
Envelopes with a peel-off adhesive strip, or with more than one flap that folds over to seal, must 
use adhesives compatible with the heat and pressure of the MFP. The extra flaps and strips 
might cause wrinkling, creasing, or jams.
Envelopes with double-side-seams
Double-side-seam construction has vertical seams at both ends of the envelope rather than 
diagonal seams. This style might be more likely to wrinkle. Make sure the seam extends all the 
way to the corner of the envelope.
Envelope storage
Proper storage of envelopes helps contribute to good print quality. Envelopes should be stored 
flat. If air is trapped in an envelope creating an air bubble, then the envelope can wrinkle during 
printing.
Card stock and heavy paper 
For optimum product performance, do not use paper heavier than 216 g/m
2
 (58 lb bond) in 
Tray 1 or 199 g/m
2
 (53 lb bond) in other trays. Paper that is too heavy might cause misfeeds, 
stacking problems, jams, poor toner fusing, poor print quality, or excessive mechanical wear.
Card stock construction
Smoothness: 135 to 216 g/m
2
 (36 to 58 lb bond) card stock should have a smoothness 
rating of 100 to 180 Sheffield.
Construction: Card stock should lie flat with less than 5 mm (0.2 inch) of curl.
Condition: Make sure card stock is not wrinkled, nicked, or otherwise damaged.
Sizes: See the sizes listed for 
.
Note
Before loading card stock in Tray 1, make sure it is regular in shape and not damaged. Also, make 
sure the cards are not stuck together.