Patent ID: 9073331
Filing Date: 2015-07-07
Classification: B41J,F15C,Y10T

Abstract:
1. A method of manufacturing a fluid path structure, comprising: a preparation step of preparation of a first resin part having a groove and a projection formed on a first surface of the first resin part and a second resin part having a rib formed on a first surface of the second resin part and a through-hole formed in the second resin part penetrating from the first surface of the second resin part to an opposite second surface of the second resin part; an aligning step of aligning the first surface of the first resin part with the first surface of the second resin part by facing the first surfaces to one another so that the rib contacts with the groove by inserting the projection into the through-hole; and a welding step of welding joint surfaces of the rib and the groove that have been aligned, forming a fluid path, the aligning step being executed so as to narrow the gap between the projection and the through-hole to a minimum at a base side of the projection relative to a half of the height of the through-hole, and the welding step being executed only at the base side of the projection relative to the half of the height of the through-hole so as to make a lateral surface of the projection only partially contact with a lateral surface of the through-hole.