| US 7,585,045 B2 | ||
| Image forming method and image forming apparatus | ||
| Jun Yamanobe, Kanagawa-ken (Japan) | ||
| Assigned to Fujifilm Corporation, Tokyo (Japan) | ||
| Filed on Dec. 13, 2007, as Appl. No. 11/956,008. | ||
| Claims priority of application No. 2006-343264 (JP), filed on Dec. 20, 2006. | ||
| Prior Publication US 2008/0150987 A1, Jun. 26, 2008 | ||
| Int. Cl. B41J 29/393 (2006.01) | ||
| U.S. Cl. 347—19 | 13 Claims |
| 1. An image forming method of ejecting liquid droplets containing coloring material toward a recording medium from nozzles
including main nozzles and subsidiary nozzles of nozzle rows of a recording head while causing relative movement between the
recording medium and the recording head in a relative movement direction that is substantially perpendicular to a direction
of alignment of the nozzles of each of the nozzle rows in such a manner that an image is formed by the coloring material on
the recording medium,
wherein the nozzle rows include first and second nozzle rows which have the main nozzles corresponding to a same coloring
material of a particular color and at least one subsidiary nozzle row which includes the subsidiary nozzles corresponding
to the same coloring material of the particular color; the first and second nozzle rows and the at least one subsidiary nozzle
row are respectively arranged at different positions in terms of the relative movement direction; the at least one subsidiary
nozzle row is disposed between the first and second nozzle rows; and the subsidiary nozzles are arranged in such a manner
that positions of the subsidiary nozzles projected on a straight line in the direction of alignment of the nozzles of each
of the nozzle rows are different from positions of the main nozzles projected on the straight line, and
wherein the image forming method includes:
a measurement step of measuring an amount of inclination of the recording head with respect to the relative movement direction;
a correction judgment step of judging whether or not correction is necessary according to the amount of inclination measured
in the measurement step; and
a correction step of carrying out droplet ejection from at least a portion of the subsidiary nozzles, in place of droplet
ejection from at least a portion of the main nozzles when judgment is made, in the correction judgment step, that the correction
is necessary, so that the correction is performed.
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