Image-recording apparatus including cartridge, tank, and detector for detecting residual amount of liquid

Abstract

An image-recording apparatus includes: a cartridge including a first storage chamber and a supply port; a tank including a second storage chamber and an inlet port; a connecting portion including a liquid channel providing communication between the supply port and the inlet port; and a detector for detecting whether a liquid level in the second storage chamber is at a prescribed position. The first storage chamber includes an upper space and a lower space partitioned by a wall formed with a communication opening. An inequality of Pm<ρ·Hs·g−Ic·Rn is satisfied, where: Pm: withstand pressure of meniscus formed at the communication opening; P: density of liquid; Hs: vertical length between the prescribed position and the communication opening; g: gravitational acceleration; Ic: flow rate of liquid from the first storage chamber to the second storage chamber; and Rn: passage resistance at the liquid channel.