It's a Coanon A.I.1 printer model mp140 i've

Yes both ink cartridges need to be installed in the printer for it to work.

You will either need to purchase new Canon ink cartridges for your printer or refill your old ones.

Take care!
damnor01

Hello, the printer Canon Pixma MP140 has cartridges with no chips. The printer reads the serial from the cartridge and tells you an estimated ink level. My recomandation is to press the resume/cancel buton for at least 10 seconds, that being the method to cancel the ink counter. After you press the resume/cancel buton you will be able to print, scan and copyas you did before.
The only disadvantage is that your printer will never show the ink level for this set of refilled cartridges, but it will work as well as brand new cartridges.

press stop/reset button for 5 second. & mention canon error e5 solution & vote.

E4 is out of ink.. replace your ink and then try again...

You Need To buy Orignal Cartridge

Error code 4 normally indicates that there is no unk, and the solution is by installing a genuine cartridge, Try to use Black PG40 remanufactured Canon printer ink cartridge. This cartridge is a high capacity cartridge which has been filled with 23ml of ink compared with the 16ml (Black) that you get with the originals. Compatible with: Canon Pixma MP140. if this error still occur it is better that you try the following procedure below:-

When you insert a refilled ink cartridge into your Pixma MP140 printer you should get a warning about the refilled cartridge. You should also be prompted, asking if you wish to disable ink level detecting. Agree to do so, and you won’t get the warnings again because the ink levels won’t be monitored by the printer.

Thanks

E4 = No ink

From CANON FAQs for your printer:

Issue: ERROR LED: E, 4
Solution: Press and hold Stop/Reset button for at least five seconds.
Clearing the Ink Error If you want to continue printing in this condition, press and hold the <Stop/Reset> button on the printer for at least five seconds, and then release it. Replace the ink cartridge and close the Scanning Unit (Printer Cover).
If printing is in progress and you want to continue printing, press the Stop/Reset button for at least 5 seconds with the ink cartridge installed. Then printing can continue under the ink out condition.
The function for detecting the remaining ink level will be disabled.
Replace the empty ink cartridge immediately after the printing. The resulting print quality is not satisfactory, if printing is continued under the ink out condition.

Halo Barbara,
Did you mean Pixma MP140/160/150/170/180?. I never hear Canon pixma MP10. Well,it doesn't matter. Did you refill your cartridge?. Error code E6 indicates that ink level is not detected properly by the printer. It usually occurs in refilled cartridge. To fix this problem you need to deactivate ink level detection function by performing following procedure:
For MP150/160/170/180: Press START button (Black or Colour)
For MP140: Hold down STOP/RESET button for about 9 seconds

Please rate me as Fixya if this solution useful for you. Thanks

Source:
Canon Inkjet Printer Forum

following error codes i found
E2-2 No paper (ASF)
E3-3 Paper jam
E4 No ink
E5-5 The ink cartridges are not installed or a non-supported ink cartridge is installed ,
or the ink cartridges are not installed properly
E8 Waste ink absorber full, or platen waste ink absorber full