Patent ID: 7645016

Claim:
A liquid ejection method comprising: (A) moving nozzles relative to a medium; (B) ejecting liquid from the nozzles while the nozzles are moving relative to the medium; (C) forming a first pattern on the medium with the liquid ejected from the nozzles at either one of a timing delayed from a certain reference timing by a predetermined interval and a timing preceding the certain reference timing by the predetermined interval while the nozzles are moving in a certain direction with respect to the medium; and (D) when the first pattern has been formed on the medium with the liquid ejected from the nozzles at the timing delayed by the predetermined interval, forming a second pattern on the medium with the liquid ejected from the nozzles at a timing delayed from the certain reference timing by an interval equal to the predetermined interval while the nozzles are moving in a direction opposite to the certain direction with respect to the medium, and when the first pattern has been formed on the medium with the liquid ejected from the nozzles at the timing preceding by the predetermined interval, forming the second pattern on the medium with the liquid ejected from the nozzles at a timing preceding the certain reference timing by an interval equal to the predetermined interval while the nozzles are moving in the direction opposite to the certain direction with respect to the medium.