The manufacturer is trying to squeeze everything not out of the volume of the cartridge tanks, but out of the buyers, calling people simply consumers! I watched a video on disassembling HP 650 cartridges and similar models - they were opened there, the factory ones were thrown away (excessively dense sponges) and foam rubber was put in their place - the volume, according to the assurances of the authors of the videos, really increased. This is quite real, since I also have a 2520hc printer on HP 46 cartridges, which are similar in size to the HP 650, but designed for 750 pages (by the manufacturer), so they can fit more ink! I recommend choosing ink and learning how to refill cartridges so that you can always print boldly, without fear of wild expenses. Light Da Deed
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