I have a PIXMA MP110, but sadly no manual. My print menu tells me that the "Waste Ink Absorber is almost full" and to see the manual......... The quality of printed matter is dreadful, so please, where is this Absorber, and how do I clean it?

Ink Absorber Full
This may clear the ink absorber problem. There is ink absorbers located at both ends of the printer where the ink head move.
To dry the ink absorber, power up the printer and open the cover so the ink cartridges and print head will move to the middle of the printer.
Then take several sheets of absorbent tissue, fold it into a pad and place it inside the printer over the ink absorber on the far left hand side of the printer to soak up the excess ink. You may need to change the absorbent tissue a few times. Then repeat the same procedure on the right hand ink absorber.
Close the lid and the printer should now function normally.

It's time to replace 3's WASTE INK ABSORBER KIT & reset waste ink counter.
The WASTE INK ABSORBER KIT is approx. USD10/pcs

1.Go to: http://www.usa.canon.com/consumer/controller?act=SupportIndexAct
2. Menu 1, select "Multifunction"
3. Menu 2, select "Inkjet"
4. Menu 3, select "PIXMA MP450"
5. Click the "Go" button.
6. Under "Search Our KnowledgeBase", type: "Waste Ink Absorber Full"
7. Click the "Search" button
8. In the search results, select "1. ');includeTableSubmitItem(12835, 'ERROR LCD: The ink absorber is almost full. Press [OK] to continue but early replacement recommended. '); return false;" class="midredlink">ERROR LCD: The ink absorber is almost full. Press [OK] to continue but early replacement recommended. <See manual>"
9. In the next page, select "1. Ink absorber replacement options - MP450". A page will be displayed describing how to fix this problem.

This is what the manual says: Ink used for cleaning is absorbed in a waste ink absorber placed in the machine. Press [OK] to cancel the error so that you can continue printing. Once the waste ink absorber becomes completely full, printing cannot be done until the waste ink absorber is replaced.
Canon recommends to contact a Canon service representative as soon as possible.

1 - Turn on the printer
2 - press MENù SCAN COPY SCAN (it will enter in service mode)
3 - select TEST MODE
4 - Select PRINTER TEST in TEST MODE
5 - Select EPROOM CLEAR
6 - Select INK COUNT
7 - Press OK
8 - Press the STOP/RESET key and then press the ON/OFF key
9 - Change the waste ink absorber in the printer

Try this:
Resetting overflow error code for Printer Canon Pixma MP110

1. Turn on the printer.
2. Click Menu, and then Scan, Copy and Scan again. All - entered the service mode.
3. Select Counter
4. Click Copy - everything. Waste dropped to zero.
5. Turn off the printer POWER button.

Good luck

Here this step by step to resetting waste ink counter printer Canon Pixma MP110

1. You will include printer.
2. press button Menu, then Scan, Copy and again Scan. All - entered into the service regime. 3. Select Counter.
3. Press button Copy - all Pampers is discarded into zero.
4. You will turn off printer by button POWER.

You could try this one, I think it will work, but if it doesn't , nothing lost???
Canon MPC190
Reset Waste Ink
1) Enter SERVICE MODE.
By pressing Menu, Copy, Scan, Copy, Copy
2) Select TEST MODE.
3) Select [8] PRINTER TEST in TEST MODE.
4) Select 3. [EEPROM CLEAR].
5) Select 0. [INK COUNT].
6) Press the [Set] key.
7) Press the [Stop/Reset] key (returning to the state of 3)), and then press the [ON/OFF] key.

The waste ink absorber is almost full. Press [OK] to continue but early replacement recommended. <See manual>
WASTE INK NEAR FULL The printer has a built-in waste ink absorber to hold the ink used during print head cleaning, for example. This error message indicates that the waste ink absorber is nearly full.
Press the OK button to cancel the error so you can continue printing.
Before the waste ink absorber becomes completely full, contact a Canon service representative. (You will need to replace a particular part of the printer.) Canon recommends that you call for service as soon as this error occurs. Once the waste ink absorber becomes completely full, printing cannot be performed until the Waste ink tank is replaced.

this answer is directly from canon

please help me for repair waste in tank full canon ip3300.