Printer won't print envelopes straight? Here's the fix

Quick answer for advanced users

Open the rear feed slot (not the main paper tray), flip the envelope lever to the envelope icon, load the envelope flap-down and left-edge first, then adjust the paper guides snug.

Why this happens

I've seen this issue on HP Envy 6000s, Canon PIXMAs, and Brother all-in-ones. The problem isn't the printer being broken — it's that the envelope needs a different paper path than regular sheets. Most people shove the envelope into the main tray, and that's where the trouble starts. The envelope's flap catches on rollers, or the paper guides aren't tight enough, so the envelope spins sideways. The fix is dead simple once you know where to look.

Fix steps — do these in order

1. Pull out the rear feed slot. It's usually a flap at the back of the printer. If yours doesn't have one, skip to the alternative fixes below. This path is straight — no curves for the envelope to fight.
2. Find the envelope lever. It's a small plastic lever inside the printer, often near the rear slot. Flip it to the envelope icon (a little picture of an envelope). This changes the roller pressure so the envelope doesn't get squished.
3. Load the envelope correctly. Flap side down, left edge first. The flap should be pointing toward the back of the printer. Slide it in until it stops — don't force it.
4. Snug the paper guides. Move the blue or gray guides so they touch the envelope's edges. Not tight enough to crinkle it, but firm enough that it can't wiggle.
5. Print a test. Send one envelope from your document — not a whole batch. If it comes out straight, you're set. If it jams, check step 3 again.

Alternative fixes if the main one fails

If your printer doesn't have a rear slot (some cheap all-in-ones skip it), try this:

• Use the manual feed slot. Some models have a single-slot on the side or front. Open your printer's manual and search for "manual feed" or "bypass tray."
• Flatten the envelope. Run a ruler along the edge to remove any curl. Curled envelopes catch on everything.
• Check your printer driver settings. Go to Print > Properties > Paper/Quality. Set the size to "Envelope #10" or whatever you're using. Don't leave it on Letter size — that tells the printer to treat it like paper, and it'll try to flip it.
• Update the firmware. I know, it sounds like a stretch, but I've seen old Canon MX series printers fix envelope skewing after a firmware update. Check the manufacturer's site.

Prevention tip for next time

Always store envelopes flat in a box — don't keep them in a drawer where they bend. A bent envelope will never run straight. And before you print, fan the stack to separate them. Sticky flaps cause double-fecds. One more thing: if you're printing a bunch, test one first. I can't tell you how many times someone printed 50 envelopes and only the first 3 were crooked.

Real-world scenario: A user on an HP OfficeJet 3830 kept getting envelopes jammed at the back. They'd loaded them flap-up in the main tray. After switching to the rear slot and flipping the envelope lever, it worked perfectly. Took 30 seconds.

If none of this works, your printer's rollers might be worn out. Look for rubber roller cleaning kits or replace the rollers. That's rare for envelope-only issues, though.