ink

Some months ago i bought a new printer Canon.
Have printed some photos from my trip to Bulgaria. The photos were magnificent and I was very glad.
Today i wanted to print some more pictures but the computer has deducted that just a few ink remains!
This surprised and disappointed me. I have phoned to my friend Michel (he is good in computers) and have asked to come.
May be ink have flowed out?
My friend explained me that at each inclusion of printer a few ink goes out from the cartridges, this protect them from drying.
As a result i almost have no more ink, though i nearly haven't used the printer.
Such unpleasant unexpectedness!
This certainly strongly revolts me. Now i should to buy new cartridges.
It appears that at all manufacturers of printers have the same problem.
They could give their printers for free, anyway all people after should buy new cartridges!