Hewlett-Packard Development Company, L.p.

Chee Beng Teo

Fei Guo

Chin Hung Andy Koh

Jennifer Marie McCord Brister

Jeffrey Anderson

Yick Wai Yvonne Audrey Ho

One or more preventative maintenance mode parameters for an inkjet-printing device having an inkjet-printing mechanism are determined based on a water loss rate of water from ink within the device and/or on an air gain rate of air into the ink within the device. As such, periodic performance of a non-user-initiated preventative maintenance mode based on the preventative maintenance mode parameters results in the ink within the inkjet-printing mechanism being sufficiently fresh so as not to affect quality of image formation by the inkjet-printing device. Therefore, the non-user-initiated preventative maintenance mode for the inkjet-printing device is periodically performed based on the preventative maintenance mode parameters to eject at least some of the ink from, and to refill fresh ink into, the inkjet-printing mechanism.

Growing community of inventors

Singapore, Singapore

Chee Beng Teo