A liquid ejection method includes: (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 a 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.