There are some methods for getting rid of Canon printers error 5100. Below are some fixes you can try to resolve this error. You simply follow the instructions as given and fix it quickly. 

*Inspect Your Printer: In case, any tiny object gets stuck inside the printer, then you can encounter this error by Inspect Your Printer.

* Using Purge Mechanism: There is also the possibility that you are getting this error because the purge cap is not properly lubricated. In such a case, you need to lubricate the sliders with grease and remove the right panel. 

* Reseat the Ink Cartridges: Reseating the ink cartridges can also resolve this error

* Reset the Ink Absorber:This error can also be resolved by resetting the waste ink absorber on a Canon printer.

* Remove and Reseat All Ink Tanks:Reseating all ink tanks can also resolve this error.