Question about HP LaserJet 2420 Printer

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Creasing and jaming 60 gram paper

We have a 2420dn with duplexing. 2 trays plus manual feed tray 1

Printer has worked well since new but now has developed a problem with thinner paper, 60 gram. It creases the paper with a neat 8mm concertina fold about 160mm from front of sheet, then jams in outfeed.
From tray 2 & 3 it does this every time. with tray 1 it works most of the time, but every so often it creases as described above.
80 gram paper works ok from any tray and all the time!!

Any ideas please?

Posted by on

  • rowlandkw Sep 17, 2008

    Thanks for suggestions.

    I had already set to lowest paper weight and it did not help.

    No evidence of broken flags - but would any paper go through properly with a broken flag?

    As originally said Tray one (manual tray) does work most of the time on 60gram paper both 1 & 2 sided.



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1. change the paper type setting to the lightest media setting you can find. this will be found in the paper handling menu. make sure that you do this on every tray that you will run the lighter media through. the reason for this change is to adjust the timing and temperature ranges in the machine.
2. if that doesn't help then try printing simplex (one sided) to see if the jamming is still in the same place. if the jam persists then you have a fuser problem, if not then your issue is in the duplex ***'y.

Having said all of this, blow the machine out with canned air before any of this with the toner cartridge removed. the reason for this is not just the obvious cleaning, but to find broken sensor flags. they will look like flat plastic pieces that will be white or gray on one end. if you find one of these flying out of your machine then there is your problem. Good Luck!

Posted on Sep 16, 2008

  • steve shroder Sep 16, 2008

    the word that is starred is the shortened variation of assembly, my apologies

  • steve shroder Sep 17, 2008

    a sticking or broken sensor may work intermittently.



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