dilwyn wrote:2. Why do printers report a cartridge as empty when there's so much ink left in them, seems extremely wasteful. The lake on my desk was several inches wide, must have been a good 5 to 10ml at least going to waste.
Often what the printer does, is that it knows how much ink is used in every 'squirt', and counts how many 'squirts' its done. To calculate how much ink is left in the cartridge.
To be sure that the printer will not actually run out of ink before its done it's maximum number of squirts, they put a bit extra ink in the cartridge. Also, If you happen to have any blocked nozzles while printing, then the printer will think its used more ink than it actually has.