To: The Hat, PeterBJ,
To: newbies
The Hat, per reply #350, you said that you worked on an orange cap to help improve the seal. Would you please provide a before picture and an after picture of said cap. Would your cap (before picture) look like the cap on the right in PereBJs reply #351?
The following is my take on orange caps:
http://www.nifty-stuff.com/forum/viewtopic.php?id=7567
title: Comparison of old style orange caps with the new style orange caps
Please read the entire thread. Note: All the caps shown are OEM orange caps. If you do not recognize a cap it may be that you do not live in the states. Canon may have used different style caps in other parts of the world (i.e. Europe, U.K., etc,).
With all due respect to The Hat, if you are a newbie please do not remove any material from the seal area on the cap. It is O.K. to remove the nebs (see PeterBJs picture in his reply #351. He has arrows pointing to said nebs.).
In my opinion there are four possible reasons why you can have ink leaking around the orange cap: Note: I am eliminating the possibility of a damaged ink outlet on the cart.
Note: I use the top-fill method to fill my carts (CLI-221C,M,Y,BK and PGI-220BK).
1. The cap is damaged.
2. The cap is worn out.
Let us assume that your cap is not damaged and/or worn out. We then can go to the following reasons.
3. You have over filled the cart. Because of the cause/effect situation in working on carts one cannot know for sure if over filling was THE cause for the ink leaking around the cap seal. If you have ink leaking from the air maze you know for sure that you have over filled the cart. Good filling practice will eliminate over filling as a reason for ink leaking from the cap and the air maze.
4. The way you have attached the cap to the ink outlet on the cart. There are two types of caps: snap on (SO) caps and loose fitting (LF) caps. The SOs are the older style caps and the LFs are the newer style. If you have a SO cap which has not been used for refilling you may be able to snap on the cap and that is itno rubber bands, tape, c-clamp, third hand clamp, etc. I would not recommend this. You can assume that Canon has engineered their caps for one-time use. If you use the cap again to refill the cart you can assume that the cap will leak unless you use something to provide added pressure against the cap and the ink outlet.
There are four primary methods to hold the cap against the ink outlet:
1. Rubber bands. This is the tried and new method. This is the method that I use. If you are using a SO cap you can use two bands. If you are using LF caps I would recommend three bandscross two bands on other side of the cap and a band down the center of the cap.
Note: If you are using a LF cap you may want to use a piece of plastic film wrap and one or more pieces of aluminum foil between the cap and the ink outlet. The plastic film should go against the outlet first with the aluminum pieces to follow. Use enough aluminum pieces so the cap will stay on by itself. Without the film/aluminum pieces the cap may not provide a good enough seal no matter what method you use to hold the cap against the outlet. The SO caps may not need the film/aluminum pieces. If you see ink leaking from a SO cap you may need to add the film/aluminum pieces.
2. C-clamp. Sometimes I use a 2 inch c-clamp to hold the cap against the outlet. For me this has worked quiet well. There are two draw backs in using the clamp:
1. You can use too much pressure and then you have an ink bomb. You should use the smallest c-clamp possible (my two-inch clamp is really too big but it was what I had on hand). You can add a small piece of wood, plastic, etc. between the air maze and the clamp to help distribute the load.
2. It is awkward to manipulate the cart while filling the cart if a clamp is attached to the cart.
3. Tape. You can use sticky tape like electricians tape or you can use Velcro-like tape. At best tape is awkward to use. Where you can use tape is when you refill the carts for later use. When you store the filled the carts you can use rubber bands to hold the cap against the outlet and then wrap the bands with tapethink belt and suspenders.
4. Third hand clamp. I believe that this is the best way to hold the cap against the outlet. Your hands are free to fill the cart and there are no rubber bands, c-clamp or tape to mess with. If you use hot glue to create a plug the third hand clamp is super handy to use. I use my coin/paper disc method to create the hot glue plug. A third hand clamp would make it especially easy to use my coin/paper disc method. By using a third hand clamp you would not have to sit the cart down to add the paper disc, use the hot glue gun, etc. Why do I not use a third hand clamp? I am cheap. They are a bit expensive!!!!! Maybe Santa Clause will give me one for Christmas?!?!
Newbie, if you use one of the four above methods and you still have ink leaking from around the cap and you have not over filled the cart you can do some surgery on the cap (a la The Hat). But proceed with great caution. You do not want to nick the seal materialbig time!!!!!
Thank you.