robnjay

asked Dec 21, 2009 at 9:45am
Hp HP Color LaserJet 1500

HP Color Laserjet 1500 - bad toners

I have 2 Laserjet 1500 printers. Both printers work, but have been laying around unused for a while.

The diagnostic page print exhibits a series of horizontal bands in all 3 regions, which I have discovered to be caused by the fact that every one of the toner cartridges in both printers has a flat spot on the developer roller.

Otherwise, the print is beautiful from both printers...

Is this a known defect in the HP C970XX toner cartridge series? I believe the wiper blades inside the cartridges are causing the flat areas (straight across each roller, I can see it), because the flat appears if I manually rotate the roller... These flat areas either pick up no toner, or they get an extra dose of toner, it seems to change depending on rotation or something.

I would entertain the idea of replacing the toners, but this is a pretty serious investment if this is just going to keep happening.

Also, it would seem to me that if I find new HP toners, they could have this defect if they've been on the shelf long enough..

Should I give up on these printers?

Thanks
Rob
Before you replace all of the toners try cleaning the developer rollers on the toner cartridges with a soft dry cloth to remove the line of toner. I had this same problem and solved it by wiping the developer rollers.
by unknown on Dec 21, 2009 at 2:42pm Add comment
THE FLAT SPOTS WERE PROBABLY CAUSED BY THE FACT THAT IT'S BEEN LEFT SITTING INSIDE THE PRINTER, PUSHING AGAINST THE BELT, FOR A WHILE.

IF IT'S BEEN LEFT OUTSIDE, OR INSIDE A BOX, IT WON'T HAVE HAPPENED. TONER POWER DOES GO LUMPY OVER A LONG PERIOD OF TIME (A FEW YEARS) ON THE SHELF THOUGH, ESPECIALLY IF STORED IN A WARM/HOT PLACE.

TRY SUE'S METHOD AND SEE IF YOU CAN REVIVE THOSE CARTRIDGES.
by Anonymous on Dec 21, 2009 at 4:42pm Add comment
Hi, I've got an HP Color LaserJet 2500L, with what I think is the same problem. (The 2500 uses the same cartridges as the 1500)

I just bought it used, in an unworking state, and fixed it except for this problem. I don't know if it was sitting for several years before I got it.

Banding is present on all colors, at a 3.39 cm pitch, indicating the developer rollers in each toner cartridge. Looking at the rollers shows a dark line across the length of the roller, where no toner is present. I tried rubbing a section of this with a cloth, tried manually turning the gears to get more toner on there, but the problem persists. So the problem is not too much toner in that spot, but NO toner.

So the main reason to post is to confirm the same problem as robnjay. Now the questions:

Is this common for laser toner cartridges? I've never seen it before.

Any repairs possible without removing the roller? Fortunately (maybe) the street price of these cartridges is so low that unless I can try something with the roller in place, it probably makes more sense to replace them with new ones.

This problem is present on all 4 colors. I don't know much about printers, but it seems that if it is parked for a really long time, the one roller that is in contact with the drum/belt may get distorted, but how did it happen to all 4?
by oldskewel on Dec 6, 2011 at 3:16pm Add comment
There's a rubber doctor blade that contacts the developer roller. Speculation is that the blade stuck to the developer roller on each of the cartridges from sitting for a great length of time. I've seen that on brand new in the box toner cartridges that were over 3 years old.
by moe on Dec 6, 2011 at 3:38pm Add comment
That makes perfect sense. Thanks for replying. Funny that I've never seen that mentioned in all the googling I've done for this problem. Maybe there was something about the 1500/2500 cartridges that makes them more susceptible to this problem.

So here's some good news on HP's handling of this ...

I had read elsewhere about people getting HP toner cartridges replaced on the limited lifetime warranty if they fail before the toner depletes. Based on what you said, I figured I'd give it a shot.

Phoned HP, Indian lady said 1-year warranty, I said not true, she said I'd need to deal with tech support first. HP no longer gives phone support for those printers, so she gave me a generic HP chat site to use for tech support. I went there, entered my model #, it said no chat support for these printers any more, suggesting I "email HP." Dead end.

So I phoned back, American lady said tech support would handle it (I appreciated that she did not try the 1-year BS on me). As she was forwarding me, I interrupted, told her the immediately previous story, and asked if she could stay on the phone to get it started. She said not to worry. I said something like, "people like you seem to be very rare within HP, so I'd like your help in handling this." After several minutes on hold, while she might have been getting a good tech and asking him to really help, she comes back on the phone and hands me off.

This guy was very helpful, had me email him scanned test pages, etc. I don't think they diagnosed it right (he checked with some other expert at one point), but they're shipping me a new Drum. Can't hurt, I figure. The reason they thought it was the drum was that there is slight fading in all colors on one side of the test page I sent. I told him that problem was almost completely fixed after I gently shook/rocked all cartridges (my guess is that problem was due to the printer being stored on its side for several years). A subsequent test page shows that problem almost completely gone, but the cartridge-banding problem still there. I pointed all this out, but I think the wheels were already in motion for me to get a new drum, so I did not object too strongly. ;-)

Once that does not fix the problem, following up with the same guy, I expect I'll get 4 new cartridges. (we already discussed it, in case the drum does not fix things - I've already photographed the flat spots on the cartridge developer rollers). For some reason, they seem really intent on standing behind their warranty on this one. Perhaps it is because this is classified as a business printer, or maybe I just got really lucky in finding the right people to help? I'll follow up here once all is resolved.
by oldskewel on Dec 8, 2011 at 9:26am Add comment
They like to put roadblocks in front of you in the hope that you'll give up. I'm proud of you jumping over all of them. The cartridges are indeed warranted for the life of the cartridge. Bonus is you get a free $179 drum. Score. The people answering the phones over there are totally clueless. That's why this forum exists. You have to realize that those techs probably have no experience with your model and are totally clueless about the inner workings of cartridges. The HP mentality is change parts until it's fixed.
by moe on Dec 8, 2011 at 10:08am Add comment
HP followed through very well on this. As expected, the new imaging drum they sent did not help. But the new toners they sent after that fixed the problem so it prints perfectly. Thanks HP!
by oldskewel on Dec 23, 2011 at 8:51am Add comment
Good for you. Be advised that I've seen a lot of problems with remanufactured cartridges locking up and knocking the carousel out of alignment. You'll be OK for a few thousand copies, so that advice is for future purchases. - moe
Thanks for the tip. Fortunately the street price (ebay, etc.) of toners and drums for the HP 2500L is low enough that I should be able to avoid the remanufactured ones. But I had always wondered why the reman's never sold on ebay. Now I know. I would guess that the re-fillers' warranties are not as good as HP's.
by oldskewel on Dec 23, 2011 at 9:45am Add comment