I have Canon MG3150 and after refilling cartridge have b and c ligh flashing. Printer cant print form PC but is working when hitting copy button.On the pc info coming that new ink has been installed.

SOURCE: Canon Pixma MP500 error

ok I figured out what to do. Open the over take out all your ink cartriages. Then flip the print head level on the left hand side up and squeeze the top of the print head (where all your ink sits on) and lift it up. You may want to blow off any dust that may be in there and put the peint head back and replace al your ink put the level down and you should be good to go if not you may have to replace the head.

SOURCE: Reset ink level on CANON MP 140 PIXMA PRINTER

How to reset the Canon MP150 after a refill (Step 10 concerns refill; instructions below the steps):
Method1 (Safe Factory Method):
1) Disconnect the printer’s power outlet
2) Press and hold the power button while connecting the power outlet back.
3) While still holding down the power button, press the reset button twice.(red circle with a triangle)
4) Release the power button
The printer takes about 10 seconds to show the number 0.
5) Press + to change the value from 0 to 1.
6) When this value is 1, press colour button; this will light up two leds.
One is for plain paper and the other for photo paper. At this point is feed the printer with paper.
7) Press the power button twice and the printer will print a some stuff (if it doesn't print by itself, then press the "color" button once and the test sheet will print). Don’t worry much about the printed material. I got some stripped lines and some numbers. I believe that my colour cartridge is clogged which is why I got the green strips.
When you print this sheet the value in the display returns to zero.
8 ) Open the printer cover cover (not the scanner cover) and remove the cartridges. With the printer still open, disconnect the power outlet.
9) Close the lid and turn on the printer.
10) Refill cartridges and place them back in their nice little abode in the printer.

SOURCE: Canon MP470: "Print Head is not installed. Install Print Head"

Some printer brands have a cute scheme that reads a "new" cartridge as good, but the refilled one has a small fuse link that is burned out by the printer. Try factory new cartridges. Unplug the printer power for a bit to reset the printer.

SOURCE: Canon Pixma ip1900 Printer wont print

i think you need a canon resetter just download it and it will fix your problem. gud luck ellyhill

SOURCE: reset Ink levels for canon mx310

How to reset Canon MX310 printer low ink signal

1. Power off the printer.

2. Holding the stop/reset button, press and hold power button also. Hold both buttons together for 5 secs.

3. Still holding the power button, release the stop/reset buton, then press the stop/reset button twice.

4. Release power button (the screen should now say 'Service Mode').

5. Wait until the power button lights steady green, then press the stop/reset button three times with a 3 sec space between each press. On the 3rd press the indicator should turn steady orange.

6. Press the power button once, (the orange light should go off).

7. Open the printer and remove both cartridges. Wait for 10 seconds. Replace the cartridges and close printer. Wait for 30 seconds.

8. Press the power button, and wait until printer has shut down.

9. Press power button to power up. The printer will feed one piece of paper, then ask you to set the language.

10. The page counter is now reset! Enjoy.