Patent ID: 9174454
Filing Date: 2015-11-03
Classification: B41J

Abstract:
1. A liquid ejection apparatus, comprising: a liquid passage member having a plurality of liquid passages; a connecting surface having a plurality of connecting portions connected to the plurality of liquid passages; a first positioning portion of a slotted hole configured to determine relative positions between the plurality of liquid passages and the plurality of connecting portions in one direction along the connecting surface, the first positioning portion being provided on the connecting surface; and a second positioning of a slotted hole portion configured to determine relative positions between the plurality of liquid passages and the plurality of connecting portions in the one direction and another direction perpendicular to the one direction, along the connecting surface, the second positioning portion being provided on the connecting surface, wherein a first distance between a weight center of gravity of the first positioning portion in a direction in a plane parallel to the connecting surface and along the connecting surface and a weight center of gravity of the connecting portion in the direction along the connecting surface, farthest from the first positioning portion, is longer than a second distance between a weight center of gravity of the second positioning portion in the direction along the connecting surface and a weight center of gravity of the connecting portion in the direction along the connecting surface, farthest from the second positioning portion.