The 4250 has only done 50k copies, and has been duplexing fine, until now. It prints the first side and then pulls the sheet back into the unit and then stops, displaying duplexing on the display. It does this whether we print from a pc or check test the print path. If we then switch off and back on again it spits the paper out.
I've cleaned the rollers and dusted the back.
Had this same issue on my 4250dtn. The solution in my case was that both paper trays were set to "custom". This is a small lever on the right side toward the back of the paper tray. Even HP was stumped on this. Hope this helps.
I had the same problem. Went through the machine cleaning everything and looking for paper. Inspecting all the rollers and replacing some and still no luck. Then I read Skyluvr's post about the switch and presto! got me a working duplex machine again. Thx for the post Skyluvr.
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I realize when I say this that you will be a little skeptical but I will say it anyway . the Paper may be damp - do you notice any curling from your print if only printed on one side? this is the easiest way to test for damp paper- while the paper is damp the Electrical resistance is much higher than when its dry and this is what typically gives a Light copy however once the paper has been though the Very Hot fuser rollers to \'fix\' the first side, the paper has been force ably dried and so the second side is much Stronger in toner. try a new ream of paper and see if that helps
Symptom: Your LaserJet 4350 prints just fine until you try to print a double-sided page. Then you see the page start to exit, pull back in, then stop. The Data light continues flashing green, and the display reads, "Processing..." There is no error indication, but the machine won't print the second side and continues to hold the half-printed paper in the duplexer. If you open the top cover and close it again, the printer will eject the page, then try to print the whole thing again, unless you're quick enough to cancel the job first.
Cause: The printer is expecting a different sized paper than what it's running. Often it's not the menu settings, but a little lever in the paper tray itself. Pull out the paper tray you're trying to print from and look for a little blue lever on top of its right-hand side. The lever is labeled "Standard/Custom." Flip it to Standard (parallel to the tray side) and your problem should go away.
you have to turn off the duplex scanning option under copy settings this will solve the issue
You can go to settings and look for Copy setup or copy settings i dont remember well but you get an option of DUPLEX COPY or DUPLEX SCAN you have to turn off this.
DO RATE MY SOLUTION PLEASE
There isn't too much to go on in your description. Taking a guess that you are running Windows....and if you are printing from Word...and that your printer has a duplexer sticking out the back...click on the Print icon/select the printer/select properties/select finishing/check "print both sides". Select OK, select print.
Sir, the Hp LaserJet 2015n printer CANNOT automatically do duplex printing since the printer does not include mechanism and paper storage areas to cycle the paper through the printer a second time and print on the reverse side.
Manual duplex printing can be done as follows: Choose duplex printing and remove all sheets after the printing is complete. Turn the sheets over while preserving the orientation and insert them in the paper feed path.
I have an HP 1020 laserjet printer which is similar to the 2015.
only problem ive had with the earlier model not doing duplex was a sheet of paper in the duplexer bin . This is hard to find but if you pull out the paper tray and look in the space where the tray goes up above theres a lever which you can push and it releases the hidden duplex bin which stores the paper at half way through the double pass and if there is any paper in there then the printer will not duplex.
This happens when the printer is printing duplex job. i.e. trying to print the other side of the page.
However check the functionality of the printer by performing Paper path test.
This would help us to know whether the printer as a stand alone ... is fine or not.
From the control panel of the printer, scroll to Diagnostic > paper path test.
Select the following in sequence.
Source: All trays
Print Test Page
Check if you get the same error.
If yes, upgrade teh firmware of the printer.
Let me know the end result. We still have more depending on the above test.
I would have to say that there must be a same piece of paper touching the paper as it is being feed through the duplex ass'y. The best thing to do is to see if the copy gets tilted toward the front or rear of the copy/ copier. You will be able to find where the obstruction is in the dupex path.