Canon iPF 670 head problem

[Dejan]

I have Canon iPF 670. There is problem with print head. As attachment is attached nozzel check and on Cyan is only half printered. The other nozzels not working. The print head print well only on some ligth cyan colors. I do head clean A, head clean B also I clean with special canon cleaner but it doesnt work. Any sugestion please

 

[Adam-KIP-Canon-HP-Tech]

I work on these all the time and this might be the most common problem. It could be the Printhead itself is having a problem so I would check the Number of days Elapsed under Information/Printhead Info and if it is not over 2 years then it is likely what I am leaning towards which is your Purge Unit. Your Purge Unit takes care of your PH. It caps it, pulls ink thru it, cleans it and keeps it from drying out. If your Purge Unit has a problem it is going to be reflected on the Printhead. This would also explain why your Head Cleaning A and Head Cleaning B is not improving things. Take the far right cover off and move the Carriage containing the PH to the Left out of the way, either by rotating the gears of the Purge Unit or you just get the Carriage Moving and quickly unplug the machine, leaving the Carriage out and away from the Purge Unit on the Far Right.
Look for paper sitting on the Purge Unit. Look at the Ink Absorbers (the 2 Rectangular Pieces on top of Purge facing UP) and clear them of debris. You can even pop them out and rinse then under water if there is ink visibly piling up on them.
If your Printhead is fairly new then I would definitely start with the a Purge Unit Cleaning, then Replacement, and hopefully there was no permanent damage done to the PH but that is a possibility.

 

[Charles Shough]

We have 4 of the IPF670's and three of them will not clean themselves during a Nozzle 2 or Nozzle 1 clean (A/B). We have reverted to cleaning them manually with a home made solution. After we have cleaned them, they print perfectly, but after about 50-100 prints they start getting horizontal lines again and the nozzle check reports are similar to your post. I noticed the purge units pads have ink on them, so I am going to try and wash them out. I will post again the results. Thanks for posting the information.

 

[cruiser2]

Hello! i have IPF 670 with some problem. The print head does not print yello and MBK
Actualy there is ink in the tanks... also when I start cleaning it fills the reserovars with ink and it works till these reservoars get empty. Then no ink ejection. If I start cleaning again I am able to rpint several pages and then the same problem appears.
the nozzle check is ok. And there is no error msg...

Iliyan

 

[Charles Shough]

Cleaning the purge units and manually cleaning the print head with home made solution has made all the difference in using the ipf670 printers.

 

[Igor Kovalchuk]

Your problem will keep three general ways:
1. Ink;
2. Clean unit in printer (parking station);
3. Print head (worst option).
Thereby you must step-by-step check and exclude possible options.
Start from newest Ink because if problem will be in not with Ink you can use then in future and you not will lose money.
Check Clean Unit – during clean in waste must going average 20ml Ink if this amount less change Clean Unit.
Clean print head SPECIAL CLEAN LIQUIDE if it did not help.
Change Print Head
Good luck!

 

[cruiser2]

Just to update. I have started print head change procedure and I inserted the same PH.
Then the nozzle check pattern was 99% (all 6 meshes were perfect). I started an yellow page A2. the yellow ink in the printhead finished and now I cannot print yelloy again

Actualy there are 3 reservoars for each collor. The main changable tank, The subtank and the small rubber bag in the printhead. I do not have supply to the print head. Any ideas?

Also I have IPF760 which is almost the same. The purge unit and the ink system are the same. I can take spare parts from there.

 

[Igor Kovalchuk]

Please send a photo your ink system for detailed analysis your situation.

 

[cruiser2]

Hi! What exactly do you want to see?
Here are some pictures:


If I put some additional air in the ink tank with injection, the collor appears. I cannot determine if the print head does not ask for ink... or the ink system does not pump ink to the head.
I was thinking to open the right panel and to check all the cable conections... but tis is a shot in the dark!!!

 

[Igor Kovalchuk]

I think that problem will be with ink please try change ink cartridges to new (fresh) ink and try print again, becouse I not see Ait in your ink system and before you say that you changed print head. Only two problem will can be 1- damage parking station or ink suck pump, 2 - problem with ink. Easy start from Ink testing

 

[cruiser2]

Hello! My problem still remains.
I though the problem is the prnt head. So there is another one. After reinstaling it, it started filling with ink, then it it calibrated and everything was ok. for 2-3 drawings. then the black disapeared again.
So i though the problem comes from the right pump which handles BK and MBK inks.
If I strat procedure for replacing the ink, it will suck the ink from the PF, then reinstall the same PH, it will fill it up, calibrate and another 2-3 perfect drawing will be done, but this is not the sollution.

The firmware is changed to v1.50
In service mode there are no menus for refiling or something else.
There are no stored errors or warnings.

Also I tried to reconect the cable connections between the right ink station and the mainboarb but still nothing.

ANY IDEAS?


here it is a file with all the setting that comes out from the printer. If somebody see something not right, please help!

Iliyan

 

[cruiser2]

New inks - NOTHING
PURGE UNIT - from another plotter - nothing...

please help!

 

[Dexter2]

Hi, I have same issue as cruiser2, did you solve it ? I hava a ipf tm-200 and if I clean heads will print about 1m or iddle more then 30 min then it start losing MBK and Yellow.
PS: I only printed 110 m2