Hewlett-packard Indigo B.v.

Nassim Henn

Assaf Pines

Chen Talmor

Image forming apparatus and methods are disclosed which include identifying a first ink density of ink in an ink tank by a density sensor unit disposed in the ink tank. The image forming apparatus and methods also include identifying an ink weight of ink in an intermediate reservoir by a weight sensor unit. The image forming apparatus and methods also include determining a second ink density of the ink in the intermediate reservoir based at least on the identified first ink density by the density sensor unit and the identified ink weight of the ink in the intermediate reservoir by the weight sensor unit.

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Nes Ziona, Israel

Nassim Henn