How to refill Canon PRO-300 cartridges (PFI-300)

The Squeezy system is three parts: the cap, the needle and the red scabbard (needle cover). Every bottle keeps its own needle, so nothing needs washing between colors.

1. Slip a red scabbard over the tip of the needle so it seals the needle. On the first install, fit it on and off a few times to break it in so it slides on and seals the tip.
2. With the scabbard on, place the needle over the cone on the cap and turn it clockwise until it is secure. Check that it is firmly attached.

2 oz bottles: remove the silver seal from the bottle, then screw the cap on securely. Peel the seal off, or cut a small X in the middle and peel outwards.

4 oz and larger bottles: these need the sealing O-ring. Place the O-ring on the mouth of the bottle and screw the cap on tight. Remove the cap and check that the O-ring has been pushed up into it. Then pierce the seal and put the cap back on.

1. With the scabbard on, squeeze the bottle gently. No air should escape.
2. Take the scabbard off, keep the bottle upright and squeeze gently. You should feel air leaving the needle tip. Do not squeeze so hard that ink comes out.

When you finish a refill session, put the red scabbard back on to seal the bottle. There is no need to wash the caps. Store the bottles upright.

There is no chip resetter for the PRO-300. Once a tank has been refilled, the printer no longer shows an ink level for that color, so you track your prints and the weight of each tank instead.

1. Get a tally counter. Count 1 click for each letter size print, 3 clicks for each 13x19 print and 1 click for every two 5x7 prints.
2. Start counting from the first tank you refill.
3. Use 24 clicks as your first refill point. Adjust it up or down to suit how you print and how much ink is left at each refill.
4. Get a digital scale. A full PFI-300 tank weighs approximately 32.5 grams.

You do this once for each of the 10 colors, right after you put a tank back in the printer following its first refill. No modification to the tank is needed.

1. Let the printer declare the tank empty, then remove it and refill it using the Every refill steps below.
2. Put the refilled tank back in the printer and follow the instructions on the screen.
3. When support code 1699 appears, press and hold the lower round button on the right side of the printer (the one with the red triangle) for 5 seconds.
4. The printer shows that it is processing, then carries on working.

From now on the printer shows no ink level for that color and does not ask about it again. Refill that tank by your tally count.

• A tank that still has a working chip: refill it when the printer declares it empty.
• Tanks you have already refilled: refill them when your tally counter reaches your refill point.
• Every time the lid is open: top off all the tanks you have refilled before, in the same session.

Each time the lid is opened or one tank is changed, the printer uses the same amount of ink and sends it to the waste ink pad. Fewer openings means less wasted ink.

1. Remove the tanks you are refilling from the printer.
2. Weigh each tank on the digital scale to see how much ink it needs. A full tank weighs approximately 32.5 grams.

The tank refills through its ink outlet pad. Ink placed on the pad is drawn back inside the tank. Nothing is drilled or opened.

1. Tilt the tank.
2. With the Squeezy bottle, or a syringe and needle, slowly dribble the correct color onto the pad.
3. If ink starts to collect on top of the pad, slow down.

1. When the tank is nearly full, or the pad gets really wet, lay the tank down horizontally.
2. Slowly drip ink onto the pad.
3. Gently squeeze the sides of the tank and release to clear any pockets of air inside.
4. Stop when the tank weighs approximately 32.5 grams. With a scale, the fill is now complete.

No scale? Keep adding ink until the tank will not absorb any more, then go to the next step.

If you filled until the tank stopped absorbing ink, take the excess back off the pad.

1. Draw the ink sitting on the pad up into a syringe.
2. While you do this, gently squeeze the sides of the tank, with the same force you use to handle it.
3. Stop when the pad looks wet but not overly so.
4. Return the excess ink to its bottle, then wash the syringe and needle.

1. Put the tanks back in the printer.
2. If this is the first refill for a color, the printer shows support code 1699. Hold the lower round button for 5 seconds (see Disable the chip).
3. Reset the tally counter to zero.

Normally you can refill these tanks many times with no servicing. Service a tank only in these cases:

• It was refilled with the wrong color and all the ink has to come out.
• It will not take ink back in, or will not take the full amount. Either the spring mechanism inside is stuck or air has entered the bladder.
• You do not want the first refill to mix with the original Canon ink still in the tank.

The video shows the servicing method.