Patent ID: 8876236

Claim:
A liquid jetting apparatus which jets a liquid, comprising: a liquid jetting head in which nozzles for jetting the liquid are formed and which has an actuator for jetting the liquid from the nozzles; an interposer substrate which is provided to the liquid jetting head and on which a driver IC is mounted; a control substrate which controls the liquid jetting head; a wire member which connects the interposer substrate and the control substrate; and a flexible circuit board which connects the interposer substrate and the actuator, wherein the interposer substrate has a first connecting portion to which the wire member is to be connected, and a second connecting portion to which the flexible circuit board is to be connected, the driver IC is arranged nearer to the first connecting portion than the second connecting portion of the interposer substrate, and a penetrating portion which penetrates the interposer substrate in a thickness direction of the interposer substrate or a notch is formed in the interposer substrate, so that the penetrating portion or the notch is arranged on a virtual line which is drawn by connecting any portion of the driver IC and any portion of the second connecting portion.