LaserJet M477 prints some lines in italics and vertical lines that should be straight are wavy

[alpha007]

hi Kevin

thank u

some questions:

1- my toners usage is high. thus i want finish all of them then order new toners.
my retailer dont accept replace unit or even toners again. they dont accept exchage my toners and say we exchange only 1 times! your device exchanged thus u cant exchange toners!

not important. hell.
if u say unit is healthy, i am relieved

2- after u replace new cartridges, your device is working without any issue?

do you suggest me to keep it or sale it? is it a great device (compared to other brands)?

thanks a lot

[KevinTX]

alpha007,

I can only share with you what my experience has been and how my issue was solved, and I think this will be helpful to you in the situation you describe.  It is conceivable that there could be more defects in your unit once you address the suspected toner cartridge issue.  So, I don't want you to hear me saying that your unit is definitely defect free.

With that said, let me offer you a few more thoughts in response to your questions:

1) I wouldn't wait a moment to address the suspected toner cartridge issue, and I wouldn't wait until you've used up the toner cartridges.  Main reason is that HP will likely supply replacement cartridges free of cost to you (as they did in my case).  But also, you'll want to determine as quickly as possible that replacing one or more of the toner cartridges actually fixes the problem.  If not, you may have other problems and would want to replace the unit before the manufacturer's warranty runs out.  I would not want to buy on my dime one or more new toner cartridges for the unit until I had determined beyond a shadow of a doubt that the unit was not defective.  A full set of toner cartridges can cost about as much as you paid for the unit, if not more.

2)  Keep in mind that the issue your seeing is likely a cartridge by cartridge issue, meaning that it may affect some colors and not others.  You should run tests in each of cyan, magenta, yellow and black to determine which cartridges may be defective.  In fact, if you are seeing the issue with only certain colors, and not all, that could be a significant confirmation that the issue is with one or more toner cartridges and not the unit itself.  If the problem is with the unit itself, one would think that all printing, no matter the color, would be affected.  Likewise, the odds of all four toner cartridges being defective would seem to be low (although, it could happen).

3) I would contact HP directly and stop dealing with your retailer.  In my experience, they will only want to deal with a full exchange for a new unit, and they would be hesitant to get drawn into replacing individual toner cartridges because that's not their responsibility (or within their capabilities).  So, unless you want to exchange your M477 for another unit (which may have the same possible issue with toner cartridge defects) or for a different model, I would stop dealing with your retailer and get with HP support ASAP.

4) My unit has printed excellently since the cyan and magenta cartridges were replaced by HP support (albeit, after several tries on the cyan cartridge).  In fact, I just used up the black cartridge (which has always worked) and replaced it with a cartridge purchased through an office supply store, and it still prints excellently.  I am very satisfied with my M477, and I'm glad I stuck with it through the toner cartridge issue.

Hope this helps you.

Kevin

[alpha007]

hello

i tested all toner cartridges:

black: with wavy vertical lines problem

magenta: with wavy vertical lines problem

yellow: with wavy vertical lines problem but less than two above

cyan: without problem

thanks for guidance

[Olli2]

We bought the first printers with this problem one year ago. So the question is: why are the cartridges still partly faulty? The problem should be known to HP.

[alpha007]

yes

its nice to know even new toner cartridges have problem

HP should solves this problem in NEW CARTRIDGES

i really dont know why !

[KevinTX]

Olli2,

I'm only speculating here, but I suspect the toner cartridges that are boxed with the printer units all came from the same manufacturing line, and who knows how long ago they may have all been boxed up.  So, HP may have solved the problem for the go-forward, but there are still defective cartridges sitting in unopened, boxed printer units in 3rd party distribution warehouses and retailers all over North America, and maybe further afield.  My guess is that it would be prohibitively expensive to recall all of those units, and HP has instead chosen to deal with this situation on a case by case basis as people are upset enough with print quality to contact HP support.

I have yet to hear of a toner cartridge bought through the retail channel that is defective - not that I've really been listening closely - and my one experience (1 data point) with purchasing a replacement HP toner cartridge at retail has been positive.  This leads me to speculate that the problem may have been confined to a single production line dedicated to the printers coming off the assembly line.  And those defective cartridges sitting in a distributed supply chain is the only reason I can come up with to explain why we're still hearing about this over a year later.

Not sure why HP hasn't spoken specifically on this issue, but since they haven't, we're all reduced to speculation.  I've always thought that allowing speculation to run wild ends up being worse than getting the truth out there and behind you.  But that's just my opinion.

Thanks,

Kevin