Question about Canon imageCLASS D780 All-In-One Laser Printer

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Removed paper jam and now copies are blank.

Not the toner cartridge....the print function still works fine. Only copies are blank.

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Drum Memory
Make about 5 to 10 prints; then, leave the machine in the office environment (normal temperature/humidity conditions)

* This symptom is noticeable in a low temperature/ humidity environment, and is absent under normal environmental conditions.

* This symptom occurs in keeping with the primary charging roller rotation (38 mm).

Posted on Sep 13, 2009

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Will not copy


This means one of the cartridges is defective, they cant align if they cant print. What i did to fix this problem is insert 2 working cartridges and get it to align properly, even if they are low on ink, then lift the cover and the cartridges will move to the center. When this happens pull the power cable out, then insert the full non functioning cartridge. Plug the power cable back in. I tried this with a color cartridge, the color cartridge was non functioning but i was able to print in black. Basically you align the cartridges and then swap them so the printer thinks they are still aligned. The color still doesnt work and it is probably a defective color cartridge.

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Paper comes out with nothing on it


On the new cartridge, did you remember to remove the plastic seal from the toner? Do you get blank sheets only when you print or when you make copies too? Were you careful when clearing the paper jam or could you have accidentally damaged the printer?

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I JUST BOUGHT A SHARP AR-5127 COPIER..WHEN IT COPIES, IT BRINGS OUT BLANK PAPER. I REMOVED THE CATRIDGE AND IF I TURN IT UPSIDE DOWN,SOME BLACK DUST COMES OUT...PLEASE SOMEONE HELP ME


Hi iheanyippaul,

I see you concern, I believe you will need to check your toner if it is placed properly inside the machine seems that it is not locked/latched in its place to be able to print properly reason why you get a blank paper and black dust when printing.

Remove the Toner and re insert it again making sure the toner is set properly inside and also make sure the correct toner cartridge is installed, an incorrect or incompatible toner can cause issue of not getting to print anything on the paper or possibly not fit inside the machine correctly.

I hope this helps.

Have a nice day,

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Just copy file..always jam..messagge"papper jam


Causes for paper jams in Printers are given below:

* Dust or debris
* Rotating drum problem
* Toner or fuser complaint

Dust or debris

One of the main causes for paper jams is the presence of dirt, dust, or debris in your toner cartridge. The paper coming into the cartridge would get stuck. So clean your printer regularly. Remove the dust from the printer. Also find out whether any jams occurred in the sensor hole in the upper part of the rotating drum. Do not touch the roller while cleaning. If the oil in your body gets into the roller, the printing media cannot roll over it properly and you can't get rid of the printer problem.

Rotating drum problem

If there is no direct symptom of paper jam and still you cannot do printing properly, find whether it is because of drum problem. If the paper gets into the end gear of the rotating drum and gets stuck there, you cannot access the printing function. Switch off your printer and check the plastic arms of the printer drum. If there is any paper piece jammed in any of the arms, you can't continue printing. Here also cleaning is the best method to solve the problem. While cleaning, check the arms of the rotating drum.

Toner or fuser complaint

Toner complaint may also cause paper jams. It can be solved only by replacing it. When you switch on the loop back plug in, two flash lights appear; then it indicates paper jam. The oil spillage in toner can cause this problem. If the toner cartridge is not functioning properly, the same problem would be the result. The diodes or transistors in the fuser unit of the printer may get damaged and this can lead to fuser complaints. To solve this problem, you should replace it.

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My HP 2420 had a paper jam. I played around with it and must have cleared the path although I did not see any paper particles fall out. (I did have a jam and figured a small piece must have been left...


Check the following steps for fixing Hp Carriage Jam Error :

Open the print carriage access door. Check for any packing material that may be blocking the internal components. Check for an orange shipping lock that may still be in place on the left side. Pull the shipping lock out, if present, and discard.

Remove and reinstall the cartridges to make sure they are properly installed. Lift the front center of the print carriage access door to open it. Lift the door up until it locks into an open position. Press down on a print cartridge and allow it to spring back up. Lift the cartridge out of the printer. Do the same for the other cartridge. Slide the black cartridge into the slot on the left and the color cartridge into the slot on the right. Press down on each one to lock it into place. Lower the print carriage access door.

Check the print cartridges to make sure the protective tape has been removed from the ink nozzles. Remove the cartridges from the printer. Remove any tape or labels. Replace the cartridges into the printer.

Push in on the tab on the left side of the clean-out door on the back of the printer to open the door. Lift the door out of the printer. Check for any paper jams. Jammed paper can block the printer cartridge carriage from moving. Pull any jammed paper out.



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your carteidge OPC duram is faulty .
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finally replace the drum and see the result.
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Try lowering the toner density using the printing software or the printer menu.

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Paper comes out with nothing on it


Possibly sounding silly here, (again) but have you removed the seal from the toner cartridge (This is a breakaway plastic tab, connected to a length on plastic, which seals the toner for transit)

If this has not been removed from the cartridge then it fails in just the way you are describing

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Print out blank pages after clearing a paper jam


Have you checked the obvious things? Such as pulling the tape off the new cartridge? Also make sure the transfer roller under the toner cart. is in securely.

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