My brand is INK-POWER. It is as same as original nearly.
Following is the test result:
Original: T0491---55.5 pages, T0492---82.5, T0494---74, T0496---103;
INK-Power: T0491---52 pages, T0492---78, T0494---70, T0496---102.
Guide created: 17/03/06 (updated 21/09/09)

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