Patent ID: 7625055

Claim:
A liquid droplet ejection apparatus comprising: a conveyor unit that conveys a recording medium; a liquid droplet ejection head that records an image by ejecting liquid droplets onto the recording medium conveyed by the conveyor unit, the position of the recording medium facing the liquid droplet ejection head at points in time when the liquid droplets are ejected from the liquid droplet ejection head defining reference positions; and a controller that delays or advances ejection timings of the liquid droplet ejection head by amounts of a correction time duration calculated by:((a preset conveyance speed of the conveyor unit÷a conveyance speed of the conveyor unit actually measured −1))×(an ejection distance from a recording surface of the recording medium to an ejection face of the liquid droplet ejection heads÷an ejection speed of the liquid droplets), making the distance between the reference positions and positions where the liquid droplets land on the recording medium become substantially constant.