HP 4700 - tones dropping in on transfer kit w/ new toners
When this first appeared - the cyan toner started dropping 'dots/spots" on the pages on the right hand side, then the magenta, then yellow and finally black. we replaced all 4 toners, the transfer kit and the fuser. after 4 days of printing - the brand new cyan has started doing the same thing. what else could be wrong?? any other parts that could be or needed to be changed out.?
Re: HP 4700 - tones dropping in on transfer kit w/ new...
High Voltage Board. The high voltage board is responsible for delivering the static charges which perform two functions within most laser printers: 1) Causes the toner to move from the drum surface to the surface of the intermediate transfer belt(ITB). 2) Causes the toner to move from the surface of the ITB to the paper.
In the CLJ 4700, there is an Electrostatic Transfer Belt instead of an Intermediate Transfer Belt. This simplifies the process by one step, because with an ETB, the paper rides on the belt, instead of having a separate transport path. HVB is still responsible for the colors transferring on to the paper from each drum, and it's literally the only thing left which can still cause copy quality issues if you've already replaced all four drums, the belt, and the fuser.
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Is it under warranty, are you re-filling the cartridges? If yes to first and no to the other two, send it back under warranty. If you use copy cartridges or refill old ones the warranty is vod. This means you need to replace the printer. To be honest, you'd be better off buying an Epson all in one. Even the wireless model start @ sound 40gbp and you can buy good copy cartridges from choicestationery.com
No, that's not what it means.
If printer heads are not aligned, CMYK colors (Cyan, Magenta, Yellow and blacK - the usual colours in a printer) will not print in the correct place.
Assume a dark grey dot is to be printed. For this C, M and Y colored dots have to be placed exactly on the same spot. But if heads are not aligned, the three color dots will not be exactly in the same place. Therefore you will see Cyan, magenta and Yellow dots adjacent to each other instead of one dark grey dot.
It is always a good idea to align the print heads every time a new cartridge is installed.
On the topmost part of the printer, there are four buttons in the following order (top to bottom): Black, Cyan, Magenta, and Yellow.
Besides the four button is another button with 4 dots (Black, Cyan, Magenta, and Yellow with a rotating arrow), press this once and you will see that the Yellow button on the left will light up, press it again and the light besides Magenta will light up and so on. Anyway, you get the idea.
Just keep on pressing it until the light besides Yellow lights up again. When it does, lift the top cover of your printer and insert the yellow toner.
You have replaced the toner cartridge but you still have to replace the imaging unit which is the drom that the toner cartridge attaches to.
Toner Cartridge OK, Low, Empty When 15,000
(high-capacity cartridge) or
cartridge) pages are
printed (5% print density).
Imaging Units At/Near end-of-life When 30,000 pages are
printed out or when the
pixel counts are
A fuse in the new
imaging unit will blow
resetting the counter.
Verify color calibration. Clean lenses.
Xerox Part Numbers
Standard Capacity Yellow 016-1975-00
Standard Capacity Magenta 016-1974-00
‘ Standard Capacity Cyan 016-1973-00
Standard Capacity Black 016-1976-00
High Capacity Yellow 016-1979-00
High Capacity Magenta 016-1978-00
High Capacity Cyan 016-1977-00
High Capacity Black 016-1980-00
Hope this helps
Again, this was actually HP Laserjet 3800. Problem solved by chatting with HP, and them having me go into a diagnosis mode that disabled cartridge check. Then, I removed the cyan cartridge, the dots went away. They then had me put the black into the cyan slot, and not dots appeared. I had backup toner on hand, swapped in a new cyan and magenta, and all was good. HP agreed to replace the cartridges.
First off, this is a comment from a random person who may or may not know ALOT about these printers and toner/printer design in general. All toners are not designed to the same specification. Toner is a combination of plastic "pigment" and iron like shavings to make it magentically attracted to the electrical charges within the unit. Different toners conform to different grades and mainly size of the particles within the blend. The manufacturer doesnt only recommend that you use their toner to make them money, yes of course it makes money, but its because when the unit is designed it is designed to use a certain grade of toner, trust me if you put the non-branded toner vs the branded toner under a microscope you would see quite a difference. Often the non-branded toner is much larger in particle size (obviousely because its cheaper to make at this spec). This causes a variety of issues from excess toner not being cleaned off of developer rollers, IDT rollers, or clogging of toner dispenser tubes in the unit and the micro filters contained at the toner dispenser assy and developer assys. Also as for the issue not changing when switching to dell branded toner - the dispenser tubes within this unit contain up to 500-1000 pages worth of toner, making no change in toner you make immediately visible. Also depending on the damage caused by the previous toner, it may not be able to be fixed until all the components in between the toner and final delivery (drum cart) are replaced. In this case more than likely the toner dispenser assy, all developer assy's, and drum cartridge need to be replaced, and than be sure to stick with factory branded toner :)
I had the same problem and found that one of the toner cartridges must have not been seated properly. I removed the black toner cartridge and re-fitted it. The printer now works fine again with no errors. 17H is a code relating to a fault in the rotation ......... possibly one or more toner cartridges need checking. Use the menu on the printer to turn it to the appropriate position (i.e. engine menu then select replacement of whichever toner you are checking).
Hope this fixes your as well.