摘要 |
PROBLEM TO BE SOLVED: To allow a cap to accurately abut on an ejection surface while preventing the flexure of a holder for holding the cap when the cap is separated from the ejection surface. SOLUTION: The cap 76 having an annular protrusion 76a and a bottom plate part 76b defining a recess 76c, is held to a holder 78. The holder 78 has eight plates 89a engaged with plates 89a of a support base 89 while being separated from each other at a distance not longer than the half of a longitudinal direction of the ejection surface 3a. The holder 78 is energized in a separating direction from the support base 89 by a spring 88. When the annular protrusion 76a is separated from the ejection surface 3a, all the plates 89a and engaging hooks 78b are engaged. When the annular protrusion 76a abuts on the ejection surface 3a, engagement between all the plates 89a and the engaging hooks 78b is released. COPYRIGHT: (C)2010,JPO&INPIT
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