| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration in print quality by appropriately correcting variation in impact positions due to temperature variation in an FWA (full width array) head constituted by arranging a plurality of head bars in parallel. SOLUTION: In the liquid droplet ejector comprising a head bar array where a plurality of head bars 132 each having a head unit for ejecting a liquid droplet are arranged in parallel at a predetermined interval, each head bar 132 has a supporting bar member 12 for receiving a rotation fulcrum shaft 14 arranged to be separated by a distance L1 from the surface against which an ejected liquid droplet impacts to spin freely and having a coefficient of linear expansion ofα1, an operation linking member 16 extending from the head bar 132 to rotate integrally, and an operation bar member 18 to which an action shaft 20 arranged at a position separated by a distance L2 from the rotation fulcrum shaft 14 in the operation linking member 16 is fixed rotatably and having a coefficient of linear expansion ofα2, and is arranged to satisfy a formula; (α2/α1-1)L1=L2, whereα2>α1. COPYRIGHT: (C)2007,JPO&INPIT
|
