| US 7,578,571 B2 | ||
| Correction value determining method, correction value determining apparatus, and storage medium having program stored thereon | ||
| Tatsuya Nakano, Nagano-ken (Japan); Masahiko Yoshida, Shiojiri (Japan); Bunji Ishimoto, Nagano-ken (Japan); Toru Miyamoto, Shiojiri (Japan); and Hirokazu Nunokawa, Matsumoto (Japan) | ||
| Assigned to Seiko Epson Corporation, Tokyo (Japan) | ||
| Filed on Oct. 02, 2007, as Appl. No. 11/866,134. | ||
| Claims priority of application No. 2006-270905 (JP), filed on Oct. 02, 2006. | ||
| Prior Publication US 2008/0106031 A1, May 08, 2008 | ||
| Int. Cl. B41J 29/393 (2006.01) | ||
| U.S. Cl. 347—19 | 9 Claims |
| 1. A correction value determining method comprising:
causing a head to record a first pattern for confirming a transport amount of a medium, while transporting the medium in a
transport direction relative to the head in accordance with a target transport amount;
obtaining a first correction value that is associated with a relative position of the head and the medium based on the first
pattern, the first correction value being a correction value for correcting the target transport amount during transport of
the medium;
causing the head to record a second pattern for confirming the transport amount of the medium, by transporting the medium
while correcting the target transport amount using the first correction value associated with the relative position;
obtaining a second correction value that is associated with the relative position of the head and the medium based on the
second pattern, the second correction value being a correction value for correcting the target transport amount during transport
of the medium; and
determining a correction value of the target transport amount by making a use of the first correction value and the second
correction value associated with the relative position when the medium reaches a roller provided on a downstream side of the
head in the transport direction different from a use of the first correction value and the second correction value associated
with the relative position at times other than when the medium reaches the roller.
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