Patent ID: 8430480
Filing Date: 2013-04-30
Classification: B41J

Abstract:
1. A liquid ejection device comprising: a device body; a frame accommodated in the device body, the frame being formed as a square frame body having a guide shaft facing the surface part of the frame in the longitudinal direction across a gap, the guide shaft having a rod shape; a first guide shaft supporting member and a second guide shaft supporting member supporting the guide shaft, the first guide shaft supporting member and the second guide shaft supporting member being fixed to the frame; a carriage configured to move in reciprocal manner along the guide shaft with a lubricant disposed therebetween and applied to the guide shaft; a liquid ejection head configured to eject liquid toward a recording medium, the liquid ejection head being mounted to the carriage; and a conveyance mechanism configured to convey the recording medium below the guide shaft and the guide shaft supporting members, end parts of the first guide shaft supporting member and the second guide shaft supporting member on the side of the guide shaft thereof being directly connected to the guide shaft in a horizontal direction or downward from the horizontal direction orthogonal to an up-down direction with respect to the guide shaft so that the carriage is movable along the guide shaft over positions where the first guide shaft supporting member and the second guide shaft supporting member are connected to the guide shaft, the first guide shaft supporting member being provided between one end part of the guide shaft in a movement direction of the carriage and one end part of a region in which the liquid ejection head ejects the liquid onto the recording medium, and the second guide shaft supporting member being provided between the other end part of the guide shaft in the movement direction of the carriage and the other end part of the region in which the liquid ejection head ejects the liquid to the recording medium.