Question about Samsung CLP-510 Laser Printer
Is saying invalid toner, yellow. Have replaced toner cartridge 3 times with no success
Inside the front cover of the Samsung CLP-510 printer is a "Waste Toner Bin" - this bin collects any toner which is not fused to the paper during the printing process. The photo at the left shows the waste toner bin installed in its correct position.As you print, the waste toner bin "fills up" with wasted toner, and you have to replace it on a regular basis. Other printers send waste toner back to a separate compartment in the toner cartridge, however Samsung prefers to sell you and additional "consumable" - apparently the $130 cost of the toner cartridges (x4 cartridges = $520/refill) just isn't sufficent revenue.
In the photo below, we see the waste toner bin removed from its operating position, and lying down on the printer door - Just tipped down from its normal place.
Note (1) - this is an optical sensor which detects when the waste toner bin is full - A "bump" on the bin (2) fits into the sensor notch when the bin is in position. An optical sensor looks though the "bump" and is supposed to detect when the toner reaches this level.
Note that one of the inlets for waste toner (3) is just above the sensor "bump" (when the bin is in it normal position). You can also see the round feed which goes into this hole, just above the sensor notch (1).
The problem occurs because the waste toner being injected into the bin "runs down the side" through the sensor "bump" - after a little while, this dirties the walls of the "bump", and although this is nowhere near as opaque as the actual toner, the sensor is sensitive enough to decide the bin is full and shuts down printing. In my opinion, this represents two fundamental flaws in the design:
The Cure The first time this happened, I noted the dirty sensor notch and cleaned the area - It lasted only for a few pages, at which time I contacted Samsung to report the problem - No matter how I tried to explain the situation to them (over several days of correspondance) the only response I could get from them was "the bin must be full - change it".The new bin lasted for perhaps 100 pages, at which point the dreaded "replace waste toner bin" message appeared. Samsumg responded that I should clean the external sensor (I had advised them that I had tried cleaning the external sensor in my first contact with them).
TO DATE - SAMSUNG HAS REFUSED TO ACKNOWLEGE THAT THERE IS A PROBLEM IN THE DESIGN OF THE WASTE TONER SYSTEM.
To confirm my theory that toner entering the bin via the inlet was dirtying the sensor area, I added a baffle made from tape as shown on the left - This cured the problem - Note how dirty the tape has become! (It WAS clear tape)... a LOT of toner was passing through this area!
Worried that the hot toner might melt/burn the tape baffle, I have since replaced it with one made from aluminum foil - Using only a single layer, with a fairly thin part that passes through the hole and is taped in place on the outside. It is important to get the part passing through the hole to be as flat against the side as possible, as it has to fit in beside the inlet from the printer - too much thickness or wrinkles here could cause a messey leak. It is also important that the baffle NOT be so long that it would prevent the sensor notch from filling from the bottom - this could cause the printer to overflow the bin - which would not be good... I recommend that you check the waste toner bin every time you change a toner cartridge.
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Posted on Mar 11, 2008
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Posted on Jan 02, 2017
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