![]() ![]() For some printers, an on-screen message indicates that it is time to replace the cartridge. Clearly defined criteria are also used for determining when a cartridge reaches end of life, a critical component for accurately calculating yield.Printing during tests is near continuous, with normal breaks for changing paper.Temperature and humidity are controlled to reflect ambient home or office conditions.The print job size is one 4圆 photo printed on an 8.5x11/A4 page.Typically, nine cartridges per cartridge model are tested for each of the color, photo, and gray cartridge yield tests.Typically, three printers of each model are used for each test.HP Premium Plus Photo Paper is used for Photo yield testing unless otherwise specified. Tests are conducted using the default quality setting for printing on the selected photo paper.HP's photo print cartridge yield testing methodology is based on the following:
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