Canon bjc-4300 cartridge insists on staying in middleofprintfield

If cartridge is in the middle and won't reset to the right, it is likely a bad printhead (BC-21e).

1: Remove Cartridge
2: Unplug the AC Power Cord
3: Hold down the RESUME button
4: Release RESUME after plugging in the AC Power cord.
5: Press the RESUME once within 5 seconds and release the RESUME .
6: Press and HOLD RESUME for two seconds or more and release it.
7: Press and HOLD RESUME for two seconds or more and release it.
8: Unplug AC Power Cord to set data.
Canon BJC-2000 BJC-2100 Serie
1: Remove the Cartridge
2: Unplug the AC Power Cord

turn printer on then lift the lid after a few seconds the cartridges will come to rest in the middle of the lid opening then just lift the cartridge out by holding clip in and pull the cartridge up when you put the new carttridge in simply load it in then push down near the end where it says push hope this helps regards Jim

Here is the Waste Tank Full reset.

Canon BJC-50 BJC-55 BJC-80 BJC-85 M40 M70 
1: Unplug Power Cord
2: Hold POWER and RESUME buttons
3: Plug in Power Cord 
4: Release buttons after the printers starts up 
5: Hold CARTRIDGE and RESUME 
6: Press POWER 
7: Release all buttons after the beeps 
8: Press CARTRIDGE 16 times 
9: Press RESUME 
10: Unplug the Power cord

Three beeps means one of two things:
1. Your cartridge (print head, not the tank) is defective.
2. The printer main board or the cable between it and the cartridge is defective.

It always helps to replace with the correct brand as cheaper versions do fail, also if you had replaced it with a BC-20 from Canon, the supplier may replace it for you. It would be a good idea to trust the printer at this stage, try a Canon BC-20

Try this:
1: Unplug Power Cord

2: Hold POWER and RESUME buttons

3: Plug in Power Cord

4: Release buttons after the printers starts up

5: Hold CARTRIDGE and RESUME

6: Press POWER

7: Release all buttons after the beeps

8: Press CARTRIDGE 16 times

9: Press RESUME

10: Unplug the Power cord

PRINTER BEEPS (5) TIMES, ERRORS

you may have touch/damage the sensor when you force the head... try to reinitialize your printer and reinstall the cartridge

To pin it down to a hardware fault, you may need to remove the printer from the usb port, uninstall driver and re start pc. Check your printer and faxes folder to make sur there are no other canon printers listed, if so delete. Re install printer driver, then when prompted connect printer to a different usb port and see if windows recognises your printer and is installed ready to use. Try again and if the same problem you know it's the printer thats faulty