Question about Canon FAX-B840 Plain Paper Bubblejet

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Canon fax-B840 - Print is "stripey"

Despite changing the ink cartridge & doing many cleans the print is still unreadable with the bottom half of all characters missing and pictures being "striped" - print a line, miss a line etc.

Is this the end of my Canon Fax B840?

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No not yet,the problem is the cartridge,sometimes even new cartridges might have a dry printhead
Remove you cartridge,put the printhead side in about 5mm of hot water and keep it there for 5 minutes,take it out and do head cleanning again.

Posted on Mar 12, 2009

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Why when the fax machine prints is some of the ink lighter than the rest?


It sounds like the print head(s) is clogged and needs cleaning. Another potential problem is the wrong ink or a defective cartridge. They ARE different. If you refill the cartridges be sure the ink is compatible with the printer.
Often simply running the built in 'head cleaning' test will clear out the partial clog.


Jul 23, 2014 | Brother Fax Machines

Tip

Waste ink tank Full Fax B120/B140--B820/B840


follow these step to reset the ink tank to zero:<br /> <br /> <img src="12FD8B7.JPG" /> <br /> <br /> <img src="5F44ACE.JPG" /> <br /> <img src="0088BF5.JPG" /> <br /><img src="77660AF.JPG" />

on Oct 31, 2010 | Canon FAX-B840 Plain Paper Bubblejet

1 Answer

Hello, the 'Cartridge jammed' message appeared on the screen... I followed the steps from the manual, cleaned the head, but I am getting the same message and the fax doesn't work... Could you...


it might be the cartrige ink cogulated keep the cartrige in a mild hot water so that the ink would get loosen , make sure you wipe the catrige before replacing it.

May 12, 2011 | Canon FAX-B840 Plain Paper Bubblejet

1 Answer

What value to set in set ink cnt?


At MaybeNow online guides are always there to provide technical support to troubleshoot Canon FAX-B840 Plain Paper Bubblejet Problems which is free of cost. You can also get Canon FAX-B840 Plain Paper Bubblejet, Fax Machines Help from archived solutions related to repair, maintenance, upgrades and installation problems.

Dec 30, 2010 | Canon FAX-B840 Plain Paper Bubblejet

1 Answer

Machine not printing sounds like it is and feeds paper thou


Change the ink cartridge first an foremost,
then do a few print head cleans to flush out the blocked nozzles. it may come back after 4 or 5 cleans
good luck!

Jan 15, 2010 | Canon FaxPhone B95 Plain Paper Inkjet

1 Answer

Cannon b840,ink cartridege seems half full ,but fax comes through ist page perfect 2nd fuzzy,blank on all following pages


Sounds like the cartridge is empty. Your cartridge has a waste toner hopper that collects excess toner from being deposited on the page. The half full feeling might just be the weight of the waste toner.

Dec 16, 2009 | Canon FAX-B840 Plain Paper Bubblejet

1 Answer

How can I get the fax and copy to print clearly?


Still sounds like a bad ink cartridge, try cleaning the bottom of the cartridge with a Kleenex and soapy water. Dry it off real good.

Look where the cartridge sits and clean the same way.

Ink jets are dead technology.

Nov 11, 2008 | HP 640 Inkjet Fax Machine

1 Answer

Black ink


Print nozzles will be at bottom of cartridge...Make sure that u do not wet copper contacts ... first try using dry paper towel and check where ink comes and follow the procedure given below....

Cleaning procedure
  1. Remove the print cartridges.
  2. Moisten a clean, lint-free cloth with water.
  3. Gently hold the cloth against the nozzles for about three seconds, and then wipe in the direction shown below.
  4. Using another clean section of the cloth, gently hold the cloth against the contacts for about three seconds, and then wipe in the direction shown.
  5. With another clean section of the cloth, repeat steps 2 through 4 above.
  6. Allow the nozzles and contacts to dry completely.
  7. Reinsert the print cartridges.
  8. Print the document again.
  9. If the print quality does not improve, repeat the steps for cleaning the nozzles and contacts up to two more times.
  10. Check the warranty and try to get replaced

Jan 18, 2008 | Lexmark F4270 Plain Paper Inkjet Fax

1 Answer

ERROR ##331


The level of ink cartridge , can not be detected Solution :
  1. resave the detection level Ink by entering the service mode
  2. replace the ink detector

Jan 11, 2008 | Canon FAX-B840 Plain Paper Bubblejet

2 Answers

No ink


hi i am a certified Canon repair tech for this fax. the problem that you are having is very common and has to do with two things. the cartridge and the purge/cleaning unit. what you can try is this open the printer and center the carridge unit and remove the cartridge. unplug the machine while it is still centered. on the right hand side you will see the purge unit. in the center of the purge unit is what looks like a retanglar pad. mix a water soap solution and apply to pad just soaking it. let it sit for a few minutes. take the ink cartridge and wipe the bottom of the cartridge with a damp soapy cloth. also if you look at the cartridge there is a little breating hole you can hold a cloth on the bottom and gently blow in that hole it will purge ink through the bottom of the cartridge. install the cartridge in the machine close the front door and replug in the power cord. you might still have to run a few cleaning cycles. hope this helps.

Jan 04, 2008 | Canon FAXPHONE B640 Plain Paper Bubblejet

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